Dr. Siddhartha S Dhar

April 21, 2022 by Biswa Nath Ghosh
No comments

1712297206625

Professor

Department: Chemistry
Phone: 9435712188
Email: ssd@che.nits.ac.in

Date of Joining: 2004-07-26
Google Scholar: Click here

AREA OF INTEREST AND SPECIALIZATION (INCLUDING RESEARCH AREA)

  • Inorganic Chemistry
  • Green Science and Technology
  • Chemistry of Nanomaterials
  • Nanostructured graphitic carbon nitride based composite materials
  • Nanostructured Hydroxyapatite based composite materials
  • Nanostructured Metal Organic Framework based composite materials
  • Application of novel nanomaterials for environmental remediation and organic transformation reactions

SHORT BIOGRAPHICAL SKETCH

Siddhartha Sankar Dhar was born in Tarapur Silchar, Cachar Assam. He studied in Narsing Higher Secondary School and passed his school leaving examination in 1988. He passed in (10+2) examination from Gurucharan College in 1990. Subsequently he graduated from G C College Silchar in 1993 with Chemistry Honours. In 1996, he completed post-graduation in Chemistry from Gauhati University. He obtained Ph D degree from Indian Institute of Technology Guwahati in 2002 under the supervision of Professor Mihir Kanti Chaudhuri. He joined National Institute of Technology Silchar as Lecturer in July 2004. He was promoted to Associate Professor in July 2018 and then to Professor in July 2022.

SUBJECTS TAUGHT

  1. Chemistry I and Chemistry II to UG students
  2. Inorganic Chemistry to PG students
  3. Green Chemistry and Technology to PG students
  4. Chemical Engineering principles to PG students

MEMBER

A lifetime member of Chemical Research Society of India (CRSI)

ADMINISTRATIVE RESPONSIBILITY

  1. Head, Department for Chemistry for two terms
  2. Warden of Hostels for two terms
  3. Admission In-charge, CCMN for two terms
  4. Dean, Students’ Welfare since 1st January 2024

Ph.D. SUPERVISION

A total of 13 students have been awarded Ph.D. under his supervision. 11 students as a sole supervisor and 02 students as Co-supervisors. Presently 07 students are pursuing their Ph D under his supervision.

M SC PROJECT SUPERVISION

A total of 21 students have been supervised for M Sc project dissertations till date.

 PUBLICATIONS IN INTERNATIONAL JOURNALS

  1. Saikatendu Debroy, Krishna Ch Das and Siddhartha S Dhar, Facile synthesis of CuO-Ag2O hybrid metal oxide composite using carica papaya, cocooning with hydroxyapatite, and photocatalytic degradation of organic dyes, Materials Science and Engineering B, 303 (2024) 117331.
  2. Linkon Bharali, Debarati Chakraborty, Triveni, Juri Kalita and Siddhartha S Dhar, Designing of a novel heterogeneous nanocatalyst ZIF-4@HAp for solvent free base catalyzed esterification reaction, Reaction Chemistry and Engineering (2024), DOI: 10.1039/d4re00026a
  3. Juri Kalita, Adrija Bose, Debarati Chakraborty, Linkon Bharali, Siddhartha S Dhar, CuWO4 reinforced Co-doped HAp nanocomposite: Improved photocatalytic activity towards degradation of eosin yellow and catalytic activity in crossed aldol condensation reaction, Chemistryselect (2023) DOI: 10.1002/slct.202303356
  4. Juri Kalita, Linkon Bharali, Bidisha Chetia, Debarati Chakraborty, Siddhartha S Dhar MOF-supported hydroxyapatite (UiO-66@HAp): An efficient catalyst for the microwave-assisted transesterification of palm oil, Biofuels, Bioproducts and Biorefining (2023) DOI:10.1002/bbb.2584
  5. Debarati Chakraborty, Juri Kalta, Linkon Bharali and Siddhartha S Dhar, Organic Ionic Liquid Grafted Nano-CeO2: A Highly Efficient Photocatalyst for Hydroxylation of Benzene and Reduction of Cr(VI), Chemistryselect, (2023) DOI: 10.1002/slct.202302451.
  6. Juri Kalita, Ankita Das, Linkon Bharali, Debarati Chakraborty, Piyush Pandey and Siddhartha Sankar Dhar, Prompt antibacterial activity of silver nanoparticle decorated on HAp embedded NiFe2O4 nanocomposite (NiFe2O4@HAp-Ag) against pathogenic strains and investigation of its photocatalytic activity towards degradation of antibiotics, Materials Today Sustainability, 124 (2023), 100552.
  7. Debarati Chakraborty, Linkon Bharali, Juri Kalita, Siddhartha Sankar Dhar, Imidazolium sulfonic acid chloride ionic liquid functionalized NiS-graphitic carbon nitride as a solid acid-base bifunctional catalyst for Knoevenagel condensation reactions, Catalysis Letters, (2023), DOI:10.1007/s10562-023-04478-w.
  8. Bishal Das, L M Rao Para, M K Mohanta, Meghali Devi, Debarati Chakraborty, N Rao Peela, Md Qureshi, Siddhartha S Dhar, Organic-Inorganic hybrid photocatalyst consisting of highly conjugated metal complex and graphitic carbon nitride for hydrogen evolution and Cr(VI) reduction, Journal of Materials Chemistry A, 44 (2002) 23691.
  9. Linkon Bharali, Juri Kalita, Debarati Chakraborty, Siddhartha Sankar Dhar, N. Shaemningwar Moyon, Hydroxyapatite nanoparticles decorated with metal–organic framework, Co-Cu/ZIF@HAp, and evaluation of photocatalytic performance of the prepared nanocomposite in the degradation of organic pollutants, Applied Organometallic Chemistry, (2023).DOI:2023;37:e7235.
  10. Saikatendu Deb Roy, Bireshwar Bhattacharjee, Krishna Ch Das and Siddhartha S Dhar, Nonmagnetic nanocomposite of strontium, copper, and manganese oxide in rapid degradation of industrial organic dyes under assistance of sunlight, Biomass Conversion and Biorefinery, (2023). DOI: 10.1007/s13399-023-04120-o.
  11. Bishal Das, Meghali Devi, Shoubhik Deb and Siddhartha S Dhar, Boosting photocatalytic property of graphitic carbon nitride with metal complex fabrication for efficient degradation of organic pollutants, Chemosphere, 323 (2023) 138230.
  12. Saikatendu Deb Roy, Krishna Ch Das, Siddhartha S Dhar, Green synthesis of hydroxyapatite cocooned nonmagnetic (Sr‑Cu‑MnO) nanocomposite for rapid degradation of colored organic dyes, Biomass Conversion and Biorefinery, (2023). DOI: 10.1007/s13399-023-04258-x
  13. Meghali Devi, Sebina Yesmin, Bishal Das, Siddhartha S Dhar and Rajdeep Dasgupta, Efficient Oxygen Doping of Graphitic Carbon Nitride by Green Microwave Irradiation for High-Performance Supercapacitor Electrode Material, Energy and Fuels, 37 (2023) 3247.
  14. Linkon Bharali, Juri Kalita, Siddhartha S Dhar and N S Moyon, Excellent Photocatalytic Activity of a Novel Hydroxyapatite Based Composite (ZnFe2O4/HAp‐Sn2+) Towards Degradation of Ofloxacin and Norfloxacin Antibiotics, Chemistryselect, 44 (2022) DOI: e202203487.
  15. Sebina Yesmin, Meghali Devi, Inamul Hussian, Rajdeep Dasgupta and Siddhartha S Dhar, Exploration of Cu/g-C3N4 Nanocomposites as a Cost-Effective High-Performance Asymmetric Supercapacitor Electrode Material, IEEE Transactions on Nanotechnology, 24, (2022)
  16. Jayanta Das, Krishna Ch Das, Debasish Guha Thakurata and Siddhartha S Dhar, Visible light-assisted degradation of binary mixture of dyes using purple tea-mediated zinc oxide nanoparticles, Environmental Quality Management, 32 (2022) 37.
  17. Jayanta Das and Siddhartha S Dhar, Camellia sinensis mediated synthesis of zero valent iron nanoparticles and study of their efficacy in dye degradation and antibacterial activity, International Journal of Environmental Analytical Chemistry, 102 (2022), 102, 7241.
  18. Debasish Guha Thakutrata, Krishna Ch Das, Arijita Paul and Siddhartha S Dhar, Visible light driven instantaneous photocatalytic degradation of aniline blue (AB) and methyl violet (MV) by strontium ferrite nanoparticles, Environmental Quality Management, 23 (2023) 69.
  19. Arpita Paul Chowdhury, K S Anantharaju, Suresh S Umare, Siddhartha S Dhar, Facile fabrication of binary BiOCl-Cu2CoSnS4 and ternary BiOCl-Cu2CoSnS4-TiO2 heterojunction nano photocatalyst for efficient sunlight-driven removal of direct blue 71 in an aqueous medium, Sankar Dhar, Colloids and Surfaces A: Physicochemical and Engineering Aspects 652 (2022) 129841.
  20. Saikatendu Deb Roy, Meghali Goswami, Krishna Ch Das, Siddhartha S Dhar, Bio-benign synthesis of Strontium, Copper and Manganese nano-hydroxide from Carica Papaya unveiling potential biocidal activity against bacterial strains and conversion to oxides and its characterization, Biomass Conversion and Biorefinery, (2022) DOI: 10.1007/s13399-022-03086-9.
  21. Sebina Ahmed, Meghali Devi, Rajdeep Dasgupta, Siddhartha S Dhar, CoFe2O4 nanocubes over Cu/graphitic carbon nitride as electrode materials for solid-state asymmetric supercapacitors, Chemical Engineering Journal, 446 (2022) 136540.
  22. Juri Kalita, Bishal Das, Siddhartha S Dhar, Synergistic effect of iron and copper in Hydroxyapatite nanorods for Fenton-like oxidation of organic dye, Journal of Colloids and Surfaces A: Physicochemical and Engineering Aspects, 643 (2022) 128750.
  23. Debarati Chakraborty, Meghali Devi, Bishal Das and Siddhartha S Dhar, Core‑shell assembly of ZrO2 nanoparticles with ionic liquid: a novel and highly efficient heterogeneous catalysts for Biginelli and esterification reactions, Environmental Science and Pollution Research, 30 (2023) 13846.
  24. Juri Kalita, Linkon Bharali, Siddhartha S Dhar, Zn doped hydroxyapatite@g-C3N4: a novel efficient visible-light driven photocatalyst for degradation of pharmaceutical pollutants, New Journal of Chemistry, 46 (2022) 20182.
  25. Meghali Devi, Debarati Chakraborty, Monjur H Barbhuiya, Bishal Das, Swarnali Nath and Siddhartha S Dhar, Phase Engineering in Graphitic Carbon Nitride with Imidazolium Sulfonic Acid Chloride Ionic Liquid Functionalization for Photocatalytic Side-Chain Oxidation of Toluene, Applied Catalysis A: General, 633 (2022) 118515.
  26. Debasish Guhathakurata, Krishna Ch Das, Siddhartha S Dhar, Efficient photocatalytic degradation of aniline blue under solar irradiation by ternary cobalt ferrite/graphitic carbon nitride/bentonite nanocomposite, Environmental Science and Pollution Research, 29 (2022) 34269.
  27. Saikatendu Deb Roy, Krishna Ch Das and Siddhartha S Dhar, Conventional to green synthesis of magnetic iron oxide nanoparticles; its application as catalyst, photocatalyst and toxicity: A short review, Inorganic Chemistry Communications, 134 (2021) 109050.
  28. Sebina Ahmed, Meghali Devi, Inamul Hussain, Rajdeep Dasgupta and Siddhartha S Dhar, In-situ grafting of Au and Cu nanoparticles over graphitic carbon nitride sheets and unveiling its superior supercapacitive performance as a hybrid composite electrode material, Journal of Energy Storage, 44 (2021) 103308.
  29. Bishal Das, Devipriya Gogoi, Meghali Devi, Siddhartha S Dhar, N Rao Peela, Synergistic Effect of Metal Complex and Dual Doped Graphitic Carbon Nitride for Superior Photocatalytic Hydrogen Evolution, Energy and Fuels, 35 (2021) 15223.
  30. Debarati Chakraborty, Meghali Devi, Bishal Das, Monjur H Barbhuiya, Siddhartha S Dhar and Avijit Chowdhury, A benevolent direction to environmental suitability: Ionic liquid immobilized MoO3 nanoparticles as efficient visible-light-driven photocatalytic degradation of antibiotics, New Journal of Chemistry, 45 (2021) 12922.
  31. Hariganesh, S. Vadivel, Bappi Paul, M. Kumaravel, S Rajendran, N. Balasubramanian,· Siddhartha S Dhar, Magnetically Recoverable Graphene Oxide Wrapped CuCo2S4/Iron Oxides Composites for Supercapacitor Application and Fenton Degradation of Organic Molecules, Journal of Inorganic and Organometallic Polymers and Materials, 31 (2021) 1987.
  32. S Hariganesh, S Vadivel, Bappi Paul, M Kumaravel, N Balasubramanium, S Rajeradran and Siddhartha S Dhar, Metal Organic framework derived magnetically recoverable CuFe2O4 porous cubes for efficient photocataytic applications, Inorganic Chemistry Communications, 125 (2021) 108405.
  33. Krishna Ch. Das, Siddhartha S. Dhar, Debasish G. Thakurata, Jayanta Das, Sn(II) inserted on Hydroxyapatite Encapsulated Nickel ferrite (NiFe2O4@HAp-Sn2+): A novel nanocomposite for the effective photodegradation of Rhodamine B dye, Journal of Cleaner Production, 290 (2021) 125172.
  34. Monjur Hassan Barbhuiya, Meghali Devi, Bishal Das, Siddhartha Sankar Dhar, Fabrication of non-covalently grafted Cu(acac)2 over two-dimensional graphene oxide nanosheets: An environmentally benign noble photocatalyst for visible-light driven degradation of phenol, Diamond and Related Materials, 110 (2020) 108153
  35. Bishal Das, Meghali Devi, Monjur Hassan Barbhuiya, and Siddhartha Sankar Dhar, Sodium and Sulfur Co-Doped Graphitic Carbon Nitride: A Novel and Effective Visible Light Driven Photocatalyst with Tunable Bandgap for Degradation of Eosin Yellow, ChemistrySelect 5 (2020) 12190.
  36. Krishna Ch Das and Siddhartha S Dhar, Fast catalytic reduction of p-nitrophenol by Cu/HAP/ZnFe2O4 nanocomposite, Materials Science & Engineering B, 263 (2021) 114841.
  37. Arijita Paul and Siddhartha S Dhar, Designing Cu2V2O7/CoFe2O4/g-C3N4 ternary nanocomposite: A high performance magnetically recyclable photocatalyst in the reduction of 4-nitrophenol to 4-aminophenol, Journal of Physics and Chemistry of Solids, 290 (2020) 121563.
  38. Krishna Ch Das, Siddhartha Sankar Dhar et al., Removal of Cadmium(II) from aqueous solution by hydroxyapatite-encapsulated zinc ferrite (HAP/ZnFe2O4) nanocomposite: kinetics and isotherm study. Environmental Science and Pollution Research, 27 (2020) 37977.
  39. Jayanta Das and Siddhartha S Dhar, Synthesis of SnO2 quantum dots mediated by Camellia sinensis shoots for degradation of thiamethoxam, Toxicological and Environmental Chemistry, 102 (2020) 186.
  40. Meghali Devi, Monjur H. Barbhuiya, Bishal Das, Bishal Bhuyan and Siddhartha S. Dhar, Modified mesoporous graphitic carbon nitride: a novel high-performance heterogeneous base catalyst for transesterification reaction, Sustainable Energy and Fuels, 4 (2020) 3537
  41. Krishna Ch Das and Siddhartha S Dhar, Rapid catalytic degradation of malachite green by MgFe2O4 nanoparticles in presence of H2O2, J Alloys and Compounds, 828 (2020) 154462.
  42. Krishna Ch Das, Bishal Das and Siddhartha S Dhar, Effective catalytic degradation of organic dyes by nickel supported on hydroxyapatite encapsulated cobalt ferrite (Ni/HAP/CoFe2O4) magnetic novel nanocomposite, Water, Air and Soil Pollution, 231 (2020) 43.
  43. Krishna Ch. Das and Siddhartha S Dhar, Remarkable catalytic degradation of malachite green by zinc supported on hydroxyapatite encapsulated magnesium ferrite (Zn/HAP/MgFe2O4) magnetic novel nanocomposite. Journal of Materials Science, 55 (2020) 45092.
  44. Arijita Paul and Siddhartha S Dhar, Construction of hierarchical MnMoO4/NiFe2O4 nanocomposite: Highly efficient visible light driven photocatalyst in the degradation of different polluting dyes in aqueous medium, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 585 (2020) 124090.
  45. Bappi Paul, Sachin Sharma, Debraj D. Purkayastha, Siddhartha S. Dhar, Rajaram Bal, Facile synthesis of size-controlled Ag supported on WO3 nanorods and their application as novel and active catalyst in oxidant-free dehydrogenation of benzyl alcohols, Catalysis Communications, 132 (2019) 105804.
  46. Bappi Paul, S. Vadivel, Nishant Yadav, Siddhartha Sankar Dhar, Room temperature catalytic reduction of nitrobenzene to azoxybenzene over one pot synthe-sised reduced graphene oxide decorated with Ag/ZnO nanocomposite, Catalysis Communications, 123 (2019) 71.
  47. Meghali Devi, Bishal Das, Monjur Barbhuiya, Bishal Bhuyan, Siddhartha S Dhar, S Vadivel, Fabrication of nanostructured NiO/WO3 with graphitic carbon nitride for visible light driven photocatalytic hydroxylation of benzene and metronidazole degradation, New Journal of Chemistry, 43 (2019) 14616.
  48. Arijita Paul, Meghali Devi and Siddhartha Sankar Dhar, Incorporation of nanosized ZnWO4 and Fe3O4 on graphitic carbon nitride to fabricate a novel, highly active magnetically recoverable catalyst in Claisen–Schmidt condensation, Journal of Physics and Chemistry of Solids, 136 (2020) 109117.
  49. Bappi Paul, Sachin Kumar Sharma, Shubhadeep Adak, Rubina khatun, Gurmeet Singh, Dipak Das, Vedant Joshi, Sahil Bhandari, Siddhartha Sankar Dhar and Rajaram Bal, Low Temperature Catalytic Oxidation of Aniline to Azoxybenzene Over Ag/Fe2O3 Nanoparticle Catalyst Using H2O2 as an Oxidant, New Journal of Chemistry 43 (2019) 8911.
  50. Tankeshwar Prasad, Sudipta Halder, Siddhartha S. Dhar, Imidazole-Supported Silica one-pot Processed Nanoparticles to Enhance Toughness of Epoxy Based Nanocomposites, Materials Chemistry and Physics 231 (2019) 75.
  51. Arijita Paul, Bishal Bhuyan, Siddhartha S Dhar, Study of core-shell α-Fe2O3@Au nanohybrid and their high catalytic performances in aerial oxidation of benzyl alcohols, Chemical Engineering Communications 207 (2020) 1185.
  52. Bappi Paul, S Vadivel, N Yadav, Siddhartha S Dhar, Room temperature catalytic reduction of nitrobenzene to azoxybenzene over one pot synthesised reduced graphene oxide decorated with Ag/ZnO nanocomposite, Catalysis Communications 237 (2019) 113.
  53. Meghali Devi, Sreejeeb Ganguly, Bishal Bhuyan, Siddhartha Sankar Dhar and Sethumathavan Vadivel, A novel [Fe(acac)3] interspersed g-C3N4 heterostructure for environmentally benign visible light driven oxidation of alcohols, European Journal of Inorganic Chemistry 2018 (2018) 4815.
  54. Bishal Bhuyan, Meghali Devi, Debashree Bora, Siddhartha Sankar Dhar and Rajashree Newar, Design of a novel photoactive bimetallic Cu-Au@g-C3N4 catalyst for visible light driven hydroxylation of benzene reaction via C-H activation, European Journal of Inorganic Chemistry 2018 (2018) 3849.
  55. Bishal Bhuyan, Alimpia Borah, Meghali Devi, Bappi Paul, Siddhartha Sankar Dhar and S Vadivel, Fabrication of a novel ZnO/NiMoO4 nanocomposite and evaluation of its visible light driven photocatalytic performance, IEEE Transactions on Nanotechnology, 17 (2018) 743.
  56. Bishal Bhuyan, Dibya Jyoti Koiry, Meghali Devi, Siddhartha Sankar Dhar, A novel MnFe2O4/ Graphitic carbon nitride (g-C3N4) nanocomposites as efficient magnetically retrievable catalyst in crossed aldol condensation, Materials Letters, 218 (2018) 99.
  57. Bishal Bhuyan, Arijita Paul, Meghali Devi, Siddhartha Sankar Dhar, Silver NPs dispersed water extract of fly ash as green and efficient medium for oxidant-free dehydrogenation of benzyl alcohols, RSC Advances, 8 (2018) 1313.
  58. Bishal Bhuyan, Bappi Paul, Arijita Paul, Siddhartha Sankar Dhar, Paederia foetida Linn. promoted synthesis of CoFe2O4 and NiFe2O4 nanostructures and their photocatalytic efficiency, IET Nanobiotechnology, 12 (2017) 240.
  59. Bishal Bhuyan, Arijita Paul, Bappi Paul, Siddhartha Sankar Dhar and Pranab Dutta, Paederia foetida Linn. promoted biogenic gold and silver nanoparticles: synthesis, characterization, photocatalytic and in vitro efficacy against clinically isolated pathogens, Journal of Photochemistry and Photobiology B: Biology, 173 (2017) 210.
  60. Maruthamani, S. Vadivel, M. Kumaravel, B. Saravanakumar, Bappi Paul, Siddhartha Sankar Dhar, Aziz Habibi-Yangjeh, A. Manikandan, Govindarajan Ramadoss, Fine cutting edge shaped Bi2O3 rods/reduced graphene oxide (RGO) composite for supercapacitor and visible-light photocatalytic applications, Journal of Colloid and Interface Science, 498 (2017) 449.
  61. Bappi Paul, Sethumathavan Vadivel, Siddhartha Sankar Dhar, Shyama Debbarma, M. Kumaravel, One-pot green synthesis of zinc oxide nano rice and its application as sonocatalyst for degradation of organic dye and synthesis of 2-benzimidazole derivatives, Journal of Physics and Chemistry of Solids, 104 (2017) 152.
  62. Bishal Bhuyan, Bappi Paul, Siddhartha Sankar Dhar, Sethumathavan Vadivel, Facile hydrothermal synthesis of ultrasmall W18O49 nanoparticles and studies of their photocatalytic activity towards degradation of methylene blue, Materials Chemistry and Physics, 188 (2017) 1.
  63. Bishal Bhuyan, Bappi Paul, Vadivel S and Siddhartha Sankar Dhar, Preparation and characterization of WO3 bonded imidazolium sulfonic acid chloride as novel and green ionic liquid catalyst for the synthesis of adipic acid, RSC Advances, (2016) 99044.
  64. Bappi Paul, Bishal Bhuyan, Debraj D Purkayastha, S. Vadivel, Siddhartha Sankar Dhar, One-pot green synthesis of gold nanoparticles and studies of their anticoagulative and photocatalytic activities, Materials Letters, 168 (2016) 143.
  65. Vadivel, D. Maruthamani, Bappi Paul, Siddhartha Sankar Dhar, A.Habibi-Yangjeh, S. Balachandran, B. Saravanakumar, A. Selvakumar, K. Selvam, Biomolecule-assisted solvothermal synthesis of Cu2SnS3 flowers/RGO nanocompo-sites and their visible-light-driven photocatalytic activities, RSC Advances, 6 (2016) 74177.
  66. Vadivel, D. Maruthamani, A. Habibi-Yangjeh, Bappi Paul, Siddhartha Sankar Dhar, Kaliyamoorthy Selvam, Facile synthesis of novel CaFe2O4/g-C3N4 nanocomposites for degradation of methylene blue under visible-light irradiation, Journal of Colloid and Interface Science, 480 (2016) 126.
  67. Bappi Paul, S Vedivel, Siddhartha Sankar Dhar, α-Fe2O3 immobilized benzimidazolium tribromide as novel magnetically retrievable catalyst for one-pot synthesis of highly functionalized piperidines, Chinese Chemical Letters, 27 (2016) 1725.
  68. Bappi Paul, Debraj Dhar Purkayastha, Siddhartha Sankar Dhar, One-pot hydrothermal synthesis and characterization of CoFe2O4 nanoparticles and its application as magnetically recoverable catalyst in oxidation of alcohols by periodic acid, Materials Chemistry and Physics, 181 (2016) 99.
  69. Bappi Paul, Debraj Dhar Purkayasthaa, Siddhartha Sankar Dhar, Subhankar Das, Sudipta Haldar, Facile one-pot strategy to prepare Ag/Fe2O3 decorated reduced graphene oxide nanocomposite and its catalytic application in chemoselective reduction of nitroarenes, Journal of Alloys and Compounds, Elsevier, 681 (2016) 316.
  70. Bappi Paul, Bishal Bhuyan, Debraj Dhar Purkayastha, Siddhartha Sankar Dhar, Facile synthesis of α-Fe2O3 nanoparticles and their catalytic activity in oxidation of benzyl alcohols with periodic acid, Catalysis Communications, 69 (2015) 48.
  71. S Vadivel, D Muruthamani, M Kumaravel, B Saravanakumar, Bappi Paul, Siddhartha Sankar Dhar, K Saravanakumar, V Muthuraj, Supercapacitors studies on BiPO4 nanoparticles synthesized via a simple microwave approach, Journal of Taibah University for Science, 11 (2017) 661.
  72. Bishal Bhuyan, Bappi Paul and Siddhartha Sankar Dhar, CTAB promoted size-tuning synthesis of rod-like V2O5 nanoparticles and their catalytic studies in oxidative esterification of aldehydes, Nanoscience and Nanotechnology Letters, 8 (2016) 173.
  73. Bappi, Paul, Debraj D Purkayastha and Siddhartha Sankar Dhar, Size-controlled synthesis of NiFe2O4 nanospheres via a surfactant-assistant hydrothermal route and their catalytic properties in oxidation of alcohols by periodic acid, Applied Surface Science, 370 (2016) 469.
  74. Bishal Bhuyan, Bappi, Paul, Debraj D Purkayastha and Siddhartha Sankar Dhar, Facile synthesis and characterization of zinc oxide nanoparticles and studies of their catalytic activity towards ultrasound-assisted degradation of metronidazole, Materials Letters, 168 (2016) 158.
  75. Tankeswar Prasad, Sudipta Haldar, M. S. Goyat and Siddhartha S Dhar, Morphological dissimilarities of ZnO nanoparticles and its effect on thermo-physical behavior of epoxy composites, Polymer composites, 39 (2018) 135.
  76. Bappi Paul, Bishal Bhuyan, Debraj Dhar Purkayastha, Siddhartha S Dhar, Photocatalytic and antibacterial activity of gold and silver nanoparticles synthesized using biomass of Parkia roxburghii leaf, Journal of Photochemistry and Photobiology B: Biology, 154 (2016) 1.
  77. Bappi Paul, Bishal Bhuyan, Debraj Dhar Purkayastha, Siddhartha Sankar Dhar, Green synthesis of silver nanoparticles using dried biomass of Diplaziumesculentum (retz.) sw. and studies of their photocatalytic activities and anticoagulative property on human blood, Journal of Molecular Liquids, 212 (2015) 813.
  78. Bappi Paul, Bishal Bhuyan, Debraj D Purkayastha, Siddhartha S Dhar and Bhisma K Patel, Hexamethonium bis(tribromide) (HMBTB) a recyclable and high bromine containing reagent, Tetrahedron Letters, 56 (2015) 5646.
  79. Bappi Paul, Bishal Bhuyan, Debraj Dhar Purkayastha, Siddhartha Sankar Dhar, Satyananda Behra, Facile synthesis of spinel CuCr2O4 nanoparticles and studies of their photocatalytic activity in degradation of some selected organic dyes, Journal of Alloys and Compounds, 648 (2015) 629.
  80. Bappi Paul, Bishal Bhuyan, Debraj Dhar Purkayastha, Madhudeepa Dey and Siddhartha S Dhar, Green synthesis of gold nanoparticles using Pogestemon benghalensis (B) O. Ktz. leaf extract and studies of their photocatalytic activity in degradation of methylene blue, Materials Letters, 148 (2015) 37.
  81. Rupa Bani Dey, Bappi Paul, Siddhartha S Dhar, A Novel Metal- and Mineral-acid free Synthesis of Organic Ammonium Tribromides and Application of Ethylenephenanthrolium Bistribromide for Bromination of Active Methylene Group of 1, 3-Diketones and β-Ketoesters, Synthetic Communications, 45 (2015) 724.
  82. Rupa R Dey, Bappi Paul, Siddhartha S Dhar and Sushmita Bhattacharjee, Novel Protocol for Synthesis of Organic Ammonium Tribromides and investigation of 1,2 Diperidinium Bistribromide-ethane in the Silylation of Alcohols and Thiols, Chemistry Letters, 43 (2014) 1545.
  83. Rupa Rani Dey and Siddhartha S Dhar, Synthesis and Characterization of 2-Carboxyethyltriphenyl Phosphonium Tribromide and its Application as Catalyst in Silylation of Alcohols and Thiols under Solvent Free Condition, Synthetic Communications, 44 (2014) 2355.
  84. Madhudeepa Dey, Rupa Rani Dey & Siddhartha Sankar Dhar, Sodium Hypochlorite Promoted Novel Synthesis of Organic Ammonium Tribromides and Application of Phenanthroline Hydrotribromide in Chemoselctive Oxidation of Organic Sulfides by Hydrogen Peroxide, Chemistry Letters, 43 (2014) 631.
  85. Rupa Rani Dey, Siddhartha Sankar Dhar, Ammonium Persulphate Promoted Synthesis of Polyethylene Glycol Entrapped Potassium Tribromide and Its Application in Acylation and Bromination of Some Selective Organic Compounds, Chinese Chemical Letters, 24 (2013) 866.
  86. Madhudeepa Dey, Siddhartha Sankar Dhar & Mukul Kalita, Novel Method of Synthesis of Quaternary Ammonium Tribromides and Investigation of Catalytic Role of Benzyltrimethylammonium Tribromide in Oxidation of Alcohols to Carbonyl Compounds, Synthetic Communications, 43 (2013) 1734.
  87. Madhudeepa Dey & Siddhartha S Dhar, Synthesis of Quaternary Ammonium Tribromides: A Novel Green Approach, Green Chemistry Letters & Reviews, 4 (2012) 639.
  88. Madhudeepa Dey, Krishnajyoti Deb and Siddhartha S Dhar, VO(acac)2 catalyzed condensation of o-phenylenediamine with aromatic carboxylic acids/aldehydes under microwave radiation affording benzimidazoles, Chinese Chemical Letters, 22 (2011) 296.
  89. K. Chaudhuri, S. K. Dehury, Siddhartha S Dhar and U. B. Sinha, The Economic Synthesis of Pyridinium Flourochrmate (VI), C5H5NH[CrO3F] (PFC) and Solvent-Free Oxidation of Organic Substrates with PFC, Synthetic Communications, 34 (2004) 4077.
  90. Bora, M. K. Chaudhuri, D. Dey and Siddhartha Sankar Dhar, Peroxo-Metal Mediated Environmentally Favourable Route to Brominating Agents and Protocols for Bromination of Organics, Pure and Applied Chemistry, 73 (2001) 93.
  91. K. Chaudhuri, Siddhartha Sankar Dhar and N. Vijayashree, Molecular Complexes of Copper(I): Easy Access to CuF(PPh3)3.2ROH (R = Me or Et), Transition Metal Chemistry 25 (2000) 559.
  92. U. Bora, G. Bose, M. K. Chaudhuri, R. Gopinath, Siddhartha Sankar Dhar, A. T. Khan and B.K. Patel, Regioselective Bromination of Organic Substrates by Tetrabutylammonium Bromide Promoted by V2O5-H2O2: An Environmentally Favourable Synthetic Protocol, Organic Letters, 2 (2000) 247.

International Patents

  1. K. Chaudhuri, S. K. Dehury, Siddhartha S. Dhar, U. Bora, B. M. Chaudhary, M. Lakshmi Kantam, Process for the preparation of metal-acetylacetonates, US Patent No. US 7282573 (2007)
  2. K. Chaudhuri, U. Bora, S. K. Dehury, D. Dey, Siddhartha S. Dhar, W. Kharmawphlang, B. M. Choudhary, L. K. Mannepalli, Process for Preparing Quaternary Ammonium Tribromides, US Patent: No. US 7005548 (2006)

 

SPONSORED RESEARCH AND DEVELOPMENT PROJECTS

  1. Title: Solvent-free oxidations and brominations of organic substrates catalyzed and/ or promoted by peroxo-metal complexes

Principal Investigator: Dr Siddhartha Sankar Dhar

Funding Agency: SERC, DST, New Delhi

Financial outlay: 8.52 lacs

Duration: 03 years form July 2008 to June 2011

  1. Title: Effect of metal doped TiO₂ on photoanode and lead free organic-inorganic metal halide perovskite on photovoltaic performance of perovskite solar cell: experimental and theoretical approach

Principal Investigator: Dr S K Tripathy, Assistant Professor, Grade-I, Dept of ECE

Co-Principal Investigator: Dr S S Dhar, Professor, Dept of Chemistry

Funding agency: SERB, File No. ECR/2016/001404

Financial outlay: Rs. 42,38,585/-

Duration: 3 years from March 2017 to February 2020

  1. Title: Nanostructured Metal Oxides Immobilized Ionic Liquids as Green Catalysts for Selective Organic Transformations

Principal Investigator: Dr S S Dhar

Co-Principal Investigator: Dr Avijit Chowdhury

Funding agency: SERB-DST, File No. EMR/2016/005860

Financial outlay: 28,64,430/-

Duration: 03 years from March 2018 to February 2021