SARJUNA K

EDUCATION

MSc., B. Ed., M. Phil., PhD

RESEARCH, TEACHING, or OTHER INTERESTS

Chemistry, Spectroscopy

Scopus Publications

Silver Nanoparticles: Synthesis in Newly Formed Ternary Deep Eutectic Solvent Media, Characterization and their Antifungal Activity
Ilangeswaran D, Sarjuna K
Current Nanomaterials, 2023
Background: When halide salts and hydrogen bond donors are combined, they produce Deep Eutectic Solvents, which have a lower freezing/melting point than the individual components. At room temperature, they have emerged as viable alternatives to ionic liquids. The wonderful features of deep eutectic solvents such as humidity tolerance, high-temperature stability, low cost, non-hazardous, reusable, and recyclable nature, allow them to replace ionic liquids. Objective: To prepare two newer Ternary Deep Eutectic Solvents using Malonic acid - Glucose – Glutamine and Malonic acid - Fructose – Glutamine. Using the prepared ternary deep eutectic solvents, to synthesize silver nanoparticles and study the antifungal behavior. Methods: The ternary deep eutectic solvents were prepared by the evaporation method in water and subjected to measure the properties such as density, pH, conductivity, viscosity, and absorption frequencies of Fourier Transform Infrared Spectroscopy. The prepared deep eutectic solvents are used for the synthesis of Silver Nanoparticles by the chemical reduction method in presence of Hydrazine Hydrate as a reducing agent and sodium hydroxide as a stabilizing agent. The synthesized nanoparticles are characterized by UV-Visible Spectroscopy, Fourier Transform Infrared Spectroscopy, X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray analysis techniques. Results: The characteristic absorption peak of UV-Visible Spectroscopy shows that silver nanoparticles were formed. FTIR exposes the metallic and other bonding of the nanoparticles and the caping materials. From the XRD pattern, we found the crystalline and the images formed in the SEM are in the nanoscale. The average particle size of silver nanoparticles is 116.87nm and 26.61 nm. Conclusion: In our study, two types of novel ternary deep eutectic solvents were developed. They act as a better solvent media for the synthesis of silver nanoparticles and the synthesized nanoparticles show antifungal behaviors against some fungi.
Synthesis and Characterization of Silver Nanoparticles Prepared Using Zinc Chloride-Sugar-Amino Acids Based Novel Ternary Deep Eutectic Solvents
Sarjuna K
Ecs Transactions, 2022
In this study, we had effectively generated four types of ternary deep eutectic solvents using the method of evaporation by mixing zinc chloride(ZC) with hydrogen bond donors such as Glucose(GLU) & Fructose(FRU) and Amino acids such as Glutamine(GLUT) & Glycine (GLY) [i.e.a- ZC-GLU-GLY, b- ZC-FRU-GLY, c- ZC-GLU-GLUT, d- ZC-FRU-GLUT]. After that, physical properties such as pH, conductivity, density, and viscosity were applied to the solvents. The H – bonded interaction between zinc chloride and other components in these TDESs were revealed by the FTIR spectroscopy. The prepared TDESs were used as a solvent medium for the synthesis of silver nanoparticles (Ag NPs) by chemical reduction method using sodium borohydride as reducing agent and sodium hydroxide as stabilizing agent. The synthesized Ag NPs were characterized by FTIR, UV, XRD, EDAX and SEM techniques. Silver has a variety of applications, but one of the most notable usages is an antibacterial disinfectant.
Preparation and physico-chemical studies of Ag2O nanoparticles using newly formed malonic acid and ZnCl2-based deep eutectic solvents
K. Sarjuna, D. Ilangeswaran
Materials Today Proceedings, 2021
Preparation of some zinc chloride based deep eutectic solvents and their characterization
K. Sarjuna, D. Ilangeswaran
Materials Today Proceedings, 2020

RECENT SCHOLAR PUBLICATIONS

Silver nanoparticles: Synthesis in newly formed ternary deep eutectic solvent media, characterization and their antifungal activity
K Sarjuna, D Ilangeswaran
Current Nanomaterials 8 (3), 280-290 , 2023
2023
Citations: 3
Synthesis and Characterization of Silver Nanoparticles Using Zinc Chloride-Sugar-Amino Acids Based Novel Ternary Deep Eutectic Solvents
K Sarjuna
ECS Transactions 107 (1), 4113 , 2022
2022
Citations: 3
Preparation and physico-chemical studies of Ag2O nanoparticles using newly formed malonic acid and ZnCl2-based deep eutectic solvents
K Sarjuna, D Ilangeswaran
Materials Today: Proceedings 49, 2943-2948 , 2022
2022
Citations: 13
Synthesis of some metal/metal sulfide nanoparticles using a superior dissolvable media-Malonic acid (MA) based Deep Eutectic Solvents [DES]
D Ilangeswaran
Abstracts of International Conferences & Meetings 1 (5), 14-14 , 2021
2021
Preparation of some zinc chloride based deep eutectic solvents and their characterization
K Sarjuna, D Ilangeswaran
Materials Today: Proceedings 33, 2767-2770 , 2020
2020
Citations: 30

MOST CITED SCHOLAR PUBLICATIONS

Preparation of some zinc chloride based deep eutectic solvents and their characterization
K Sarjuna, D Ilangeswaran
Materials Today: Proceedings 33, 2767-2770 , 2020
2020
Citations: 30
Preparation and physico-chemical studies of Ag2O nanoparticles using newly formed malonic acid and ZnCl2-based deep eutectic solvents
K Sarjuna, D Ilangeswaran
Materials Today: Proceedings 49, 2943-2948 , 2022
2022
Citations: 13
Silver nanoparticles: Synthesis in newly formed ternary deep eutectic solvent media, characterization and their antifungal activity
K Sarjuna, D Ilangeswaran
Current Nanomaterials 8 (3), 280-290 , 2023
2023
Citations: 3
Synthesis and Characterization of Silver Nanoparticles Using Zinc Chloride-Sugar-Amino Acids Based Novel Ternary Deep Eutectic Solvents
K Sarjuna
ECS Transactions 107 (1), 4113 , 2022
2022
Citations: 3
Synthesis of some metal/metal sulfide nanoparticles using a superior dissolvable media-Malonic acid (MA) based Deep Eutectic Solvents [DES]
D Ilangeswaran
Abstracts of International Conferences & Meetings 1 (5), 14-14 , 2021
2021