Comparative study of chemically and green synthesized sulphur nanoparticles
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Date
2022-03
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G. B. Pant University of Agriculture and Technology, Pantnagar
Abstract
The present work is a comparative study of chemically and green synthesized sulphur nanoparticles. In the chemical method, sodium dodecylbenzene sulphonate (SDBS) has been used as a capping and stabilizing agent, while in green synthesis, Catharanthus roseus, Aloevera, Ocimum basilicum and Syzygium cumini leaves extract have been used as a surfactant. Citric acid and oxalic acid have been used to provide the acidic medium throughout the process. A total of eight combinations have been used to find the best among green synthesized sulphur nanoparticles. UV-Vis, XRD, FTIR, SEM and EDX characterization techniques have been used to study the attributes of sulphur nanoparticles. It has been found that sulphur nanoparticles synthesized using Syzygium cumini leaves extract in both acidic mediums are smaller, uniformly
distributed and spherical, but the sulphur nanoparticles synthesized using oxalic acid have the smallest crystalline size. Further, a comparative study has been carried out between the chemically synthesized sulphur nanoparticles and green synthesized sulphur nanoparticles using an appropriate combination, which revealed that green synthesized sulphur nanoparticles are more crystalline and have a small crystalline size with high crystallinity index. Thereafter, the reducing agent has been replaced with green acid(Lemon juice) and a comparative study has been carried out in combination with SDBS and Syzygium cumini leaves extract. Syzygium cumini leaves extract shows better capping and stabilizing activity with lemon extract as compared with SDBS. Pure green synthesized sulphur nanoparticles are small and evenly distributed. The study has been extended to assess the comparative antifungal efficacy of chemically and green synthesized sulphur nanoparticles. It has been observed that sulphur nanoparticles synthesized using pure green extract(Syzygium cumini and lemon juice) are more compatible with the biological system in comparison to all other combinations.Therefore these green synthesized sulphur nanoparticles can be the better alternatives for getting disease free and high- yield crops without compromising with the natural habitats.