A new approach for synthesis of bismuth oxide derived photocatalyst for degradation of para nitrophenol

This study presents a unique, fast, and environmentally friendly approach for synthesizing MnO 2 nanoparticles (MnO 2 NPs) utilizing Withania somnifera (Ashwagandha) extract. The formation of nanoparticles was indicated by a color change from dark purple to dark brown within 10 min and validated through techniques including UV–Vis spectroscopy, Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR), and Energy Dispersive X-ray (EDX). Bromocresol green and Bromothymol blue were established as standards for assessing the photocatalytic efficiency of the synthesized nanoparticles. The synthesized nanocatalyst exhibited remarkable removal efficiency upon sunlight exposure, achieving 92% for Bromothymol blue and 95% for Bromocresol green within a duration of 1 h. The influence of variables including duration, photocatalyst dosage, and photodegradation kinetics was carefully examined to assess the efficacy of the created photocatalyst. The devised procedure is environmentally benign, facile to execute, and does not necessitate any chemical agents or advanced instrumentation for synthesis. This presents a new opportunity for the advancement of green photocatalysts, which may serve as an outstanding nanomaterial for wastewater clean-up.

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Sunlight-driven photocatalytic degradation of industrial dyes using Withania Somnifera decorated MnO2 nanoparticles

Chaudhary,

Kumar,

Raghav

et al. 2024

Preprint

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The level of pollution in water bodies has recently increased to a concerning degree due to the expansion of industrial activities. The consumption of organic dyes in textile industries has also set up an alarming situation worldwide for their side-effects. These pigments are typically persistent and challenging for traditional wastewater treatment methods to break them down. The present study reports a novel, rapid, and green method for the synthesis of MnO2 nanoparticles using the Withania Somnifera (Ashwagandha) extract. The techniques such as UV-Vis spectroscopy, FESEM, FTIR, EDX were employed to confirm the synthesis of the prepared nanoparticles. Bromocresol green and Bromothymol blue were set up as benchmark for measuring the photocatalytic efficacy of the prepared nanoparticles. It was observed that the prepared nanocatalyst on the sunlight exposure displayed excellent removal effectiveness for both the dyes i.e. 92% for Bromothymol blue and 95% for Bromocresol green respectively for a time period of 1 h. The effect of parameters such as time, dose of photocatalyst, and photodegradation kinetics was also systematically investigated for evaluating the effectiveness of the developed photocatalyst. The developed method is easy to implement, is environment friendly and does not require any chemical agents or sophisticated instrumentation for synthesis. This opens a novel avenue for the development of green photocatalyst which can emerge as an exceptional nanomaterial for the waste water remediation.

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A new approach for synthesis of bismuth oxide derived photocatalyst for degradation of para nitrophenol

Cited by 3 publications

References 29 publications

Hydrothermally Synthesized TiO2 Nanowires and Potential Application in Catalytic Degradation of p-Nitrophenol

Hydrothermally Synthesized TiO2 Nanowires and Potential Application in Catalytic Degradation of p-Nitrophenol

Sunlight-driven photocatalytic degradation of industrial dyes using Withania somnifera decorated MnO2 nanoparticles

Sunlight-driven photocatalytic degradation of industrial dyes using Withania Somnifera decorated MnO2 nanoparticles

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