Divya T, Venkatachalam K*, “Plant mediated synthesis of nickel oxide nanoparticles using Mimosa pudica plant extract and evaluation of its photocatalytic and antibacterial activity”, National Conference on Emerging Techniques in Science and Humanities (NCETSH 2023), DMI College of Engineering, Chennai on 9^th & 10^th February 2023

Niveditha S, Venkatachalam K*, “Plant mediated synthesis of cobalt oxide nanoparticles using Solanum nigrum plant extract and evaluation of its photocatalytic and antibacterial activity”, National Conference on Emerging Techniques in Science and Humanities (NCETSH 2023), DMI College of Engineering, Chennai on 9^th & 10^th February 2023.

International Conference On Recent Trends in Analytical Chemistry (ICORTAC-2015) Organised by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 28^th – 30^th December 2015

International Conference On Recent Trends in Analytical Chemistry (ICORTAC-2018) Organised by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 15^th – 17^th March 2018.

International Webinar Series on Novel Electrochemical Energy Devices for Storage (NEEDS-2020), Organized by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 17^th – 19^th August 2020.

International Virtual Conference on Biomedical Materials Innovation (ICBMI-2020), Organized by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 06^th – 09^th December 2020.

International Workshop on 3D Printing, Organized by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 09^th – 10^th April 2021.

International Workshop on Electro-Spinning/Spraying-2021, Organized by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 23^rd – 24^th April 2021.

International Webinar Series on Novel Electrochemical Energy Devices for Storage (NEEDS-2022), Organized by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 08^th – 09^th April 2022.

International Conference On Recent Trends in Analytical Chemistry (ICORTAC-2023) Organised by Department of Analytical Chemistry, University of Madras, Guindy Campus, Chennai-25 on 26^th – 28^th June 2023.

G. Dhinagaran, K. Palanichamy, S. Prashanna Suvaitha, K. Venkatachalam*, “Synthesis of biodiesel from Neem oil using sulfated mesoporous zirconia via tranesterification”, International Virtual Conference on “Chemical Research for Sustainable Development (ICCRSD-2021)” organized by the Department of Chemistry, SRM Institute of Science and Technology, Ramapuram Campus, Chennai-89 during 24-25^th September 2021.

Prashanna Suvaitha S, Dhinagaran G, Divya T, Venkatachalam K*, “Bimetallic oxide NiO/ZnO nanocomposites by eggshell membrane assisted combined impregnation with calcination technique for antibacterial and antifungal performance”, International Virtual Conference on “Chemical Research for Sustainable Development (ICCRSD-2021)” organized by the Department of Chemistry, SRM Institute of Science and Technology, Ramapuram Campus, Chennai-89 during 24-25th September 2021

Divya T, Prashanna Suvaitha S, Dhinagaran G, Venkatachalam K*, “Synthesis of MgO nanoparticles using bio-waste egg shell membrane: Evaluation of antibacterial activity”, International Virtual Conference on “Chemical Research for Sustainable Development (ICCRSD-2021)” organized by the Department of Chemistry, SRM Institute of Science and Technology, Ramapuram Campus, Chennai-89 during 24-25^th September 2021

Samuel Barnabas K, Prashanna Suvaitha S, Dhinagaran G, Venkatachalam K*, “A Novel Method development and Validation of Ceftazidime in Bulk drug and Pharmaceutical Dosage Forms Using RRLC Method”, International Virtual Conference on “Chemical Research for Sustainable Development (ICCRSD-2021)” organized by the Department of Chemistry, SRM Institute of Science and Technology, Ramapuram Campus, Chennai-89 during 24-25^th September 2021

G. Dhinagaran, K. Palanichamy, S. Prashanna Suvaitha, K. Venkatachalam*, “Synthesis and characterization of Ni-Co supported on MgAl₂O₄ nanocatalyst in the transesterification of jatropha oil”, Catalysis Science & Technology 10^th Anniversary Symposium, Royal Society of Chemistry, online 16-17^th November 2021

G. Dhinagaran, S. Prashanna Suvaitha, K. Venkatachalam*, “Synthesis and characterization of SBA-15 supported sulphated zirconia for biodiesel production via tranesterification Neem oil”, International Conference on Advances in Chemistry with specific reference to Catalysis, Sensors, Drug Delivery and Energy Materials (ICACSEM – 2022), University of Madras, Chennai on 28^th-29^th March 2022.

Prashanna Suvaitha S, Divya T, Venkatachalam K*, “Bio-waste eggshell membrane assisted synthesis of NiO/ZnO nanocomposite and its characterization: Evaluation of antibacterial and antifungal activity”, International Conference on Advances in Chemistry with specific reference to Catalysis, Sensors, Drug Delivery and Energy Materials (ICACSEM – 2022), University of Madras, Chennai on 28^th-29^th March 2022

Niveditha S, Dhinagaran G, Prashanna suvaitha S, Divya T, Venkatachalam K *, “Bio-Synthesis of Co₃O₄ Nanoparticles using Cocos nucifera and their biological application”, International Conference on Advances in Chemistry with specific reference to Catalysis, Sensors, Drug Delivery and Energy Materials (ICACSEM – 2022), University of Madras, Chennai on 28^th-29^th March 2022.

Divya T, Dhinagaran G, Prashanna suvaitha S, Niveditha S, Venkatachalam K *, “Bio-Synthesis of NiO Nanoparticles using Solanum nigrum and their biological application”, International Conference on Advances in Chemistry with specific reference to Catalysis, Sensors, Drug Delivery and Energy Materials (ICACSEM – 2022), University of Madras, Chennai on 28^th-29^th March 2022.

Santhoshini M, Venkatachalam K *, “Design and Development of hierarchial heterostructures for the Amplified rate of Hydrogen Production via Photocatalytic Water splitting”, International Conference on Advances in Chemistry with specific reference to Catalysis, Sensors, Drug Delivery and Energy Materials (ICACSEM – 2022), University of Madras, Chennai on 28^th-29^th March 2022.

Prashanna Suvaitha S, Venkatachalam K*, “Studies on biological activity of MgO/ZnO nanocomposite derived via eggshell membrane: A Bio-waste approach”, International Conference on Nanobiosensors (NBS-2022), University of Madras, Chennai on 29^th-30^th September 2022

Niveditha S, Prashanna Suvaitha S, Divya T, Venkatachalam K*, “Bio-Synthesis of Co₃O₄ Nanoparticles using Aristolochia bracteata leaf extract and their biological application”, International Conference on Nanobiosensors (NBS-2022), University of Madras, Chennai on 29^th-30^th September 2022

Divya T, Prashanna Suvaitha S, Niveditha S, Venkatachalam K*, “Plant mediated synthesis of Iron oxide Nanoparticles using Solanum nigrum plant extract and evaluation of its antibacterial activity”, International Conference on Nanobiosensors (NBS-2022), University of Madras, Chennai on 29^th-30^th September 2022.

Prashanna Suvaitha s and Venkatachalam K*, “Adsorption of ofloxacin antibiotic from aqueous solution onto Co₃O₄/SBA-15: a study of isotherms and kinetics”, International Conference on Advanced Innovation and Research Challenges in Science & Technology (ICAIRST), Vels Institute of Science and Technology, Chennai from 1^st to 3^rd March 2023.

Divya T and Venkatachalam K*, “Plant mediated synthesis of nickel oxide nanoparticles using Mimosa pudica leaf extract: photocatalytic degradation of cationic dye”, International Conference on Advanced Innovation and Research Challenges in Science & Technology (ICAIRST), Vels Institute of Science and Technology, Chennai from 1^st to 3^rd March 2023.

Prashanna Sunaitha S and Venkatachalam K*, “Preparation, Characterization and Biological applications of hydroxyapatite with chitosan – silver – fucodian nanocomposite”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Niveditha S and Venkatachalam K*, “Plant mediated of Co₃O₄ nanoparticles using Cocos nucifera plant extract and evaluation of its photocatalytic and antibacterial activity”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023

Divya T and Venkatachalam K*, “one pot synthesis and characterisation of iron oxide nanoparticles using Mimosa pudica leaf extract: investigation of its photocatalytic activity”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Vishalee S and Venkatachalam K*, “Photocatalytic activity of zirconium dioxide nanoparticles synthesized via jasminum fluminense leaf extract”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Praveen Kumar G and Venkatachalam K*, “Isotherm and Kinetic Studies on the Sorption of Crystal Violet Dye by a Low Cost Effective Adenanthera Pavonina Seeds Activated Carbon”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023

Abimanyan N and Venkatachalam K*, “Adsorption of Janus Green dye on activated carbon derived from Delonix regia seeds”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023

Sujatha P and Venkatachalam K*, “Bio-synthesis of copper oxide nanoparticles using peeple plant extract and its antibacterial activity”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023

Anand T and Venkatachalam K*, “Investigation of antifungal effect of iron oxide nanoparticles against different candida species”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Keerthana V and Venkatachalam K*, “Antifungal activity of biogenically synthesized manganese dioxide against pathogenic fungus Fusarium solani”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2K23), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Sivagami Malathi K and Venkatachalam K*, “Synthesis of manganese dioxide nanoparticles using Hibiscus rosasinensis and investigation of their anti-bacterial activity”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023

Tamilselvan and Venkatachalam K*, “Bio-synthesis of vanadium pentoxide nanoparticles using solanum nigrum plant extract and its antibacterial activity”, Two-day International Conference on Advances in Chemical Synthesis and Material Sciences (ICACSMS-2023), Bharath Institute of Education and Research, Chennai on 19^th & 20^th April 2023.

Divya T and Venkatachalam K*, “Synthesis and Physicochemical characterization of La-NiO Nanoparticles using Hibiscus rosasinensis extract for Photocatalytic degradation of Anionic dye” International Conference on Chemical and Material Science ICCM-2023 (Virtual mode), Sir Theagaraya College, Chennai on 3^rd & 4^th May 2023.

Vishalee S and Venkatachalam K*, “Green synthesis of Zirconium dioxide using Acalypha indica plant extract: Evaluation of Antibacterial Activity” International Conference on Chemical and Material Science ICCM-2023 (Virtual mode), Sir Theagaraya College, Chennai on 3^rd & 4^th May 2023

G. Dhinagaran, K. Venkatachalam*, “Acetalization of glycerol for biofuel additives synthesize over mesoporous SBA-15 supported HPW catalysts” 3^rd International Conference on Recent Trends in Analytical Chemistry (ICORTAC-2023), Department of Analytical Chemistry, University of Madras, Chennai on 26-28^th June 2023.

Prashanna Suvaitha S and Venkatachalam K*, “Adsorption of sunset yellow and indigo carmine dye with SBA-15 supported polyaniline composite” 3^rd International Conference on Recent Trends in Analytical Chemistry (ICORTAC-2023), Department of Analytical Chemistry, University of Madras, Chennai on 26-28 June 2023

Niveditha S and Venkatachalam K*, “Bio synthesis of copper oxide nanoparticles using aristolochia bracteolata plant extract and its antibacterial activity” 3^rd International Conference on Recent Trends in Analytical Chemistry (ICORTAC-2023), Department of Analytical Chemistry, University of Madras, Chennai on 26-28 June 2023.

Divya T and Venkatachalam K*, “Synthesis of NiO and La-NiO nanoparticles using Punica granatum leaf extract and comparison of its antibacterial activity” 3^rd International Conference on Recent Trends in Analytical Chemistry (ICORTAC-2023), Department of Analytical Chemistry, University of Madras, Chennai on 26-28 June 2023.

Vishalee S and Venkatachalam K*, “Facile green synthesis of Zirconium dioxide using Musa acuminata leaf extract: characterization and biological application” 3^rd International Conference on Recent Trends in Analytical Chemistry (ICORTAC-2023), Department of Analytical Chemistry, University of Madras, Chennai on 26-28 June 2023