Interface-induced efficient adsorption and photocatalytic degradation of organic pollutants using rGO/SnO2 nanocomposites: exploring the role of rGO concentration at the interface

Author:

Gupta Shalu,Kumar RakeshORCID

Abstract

Abstract This study presents the synthesis and characterization of rGO/SnO2 nanocomposites and investigates their efficacy in the adsorption and photocatalytic degradation of organic contaminants. The nanocomposites were synthesized via a one-step hydrothermal route, which is an environmentally friendly method without the use of hazardous reducing agents. The incorporation of rGO onto SnO2 nanostructures led to bandgap modification and increased specific surface area, synergistically enhancing the adsorption and photocatalytic properties of the nanocomposites. The influence of varying rGO concentrations on the performance of the nanocomposite was systematically examined. An optimal weight ratio of 15% of rGO was identified, providing the most effective adsorption-photodegradation synergy, resulting in the rapid degradation of organic contaminants under simulated sunlight irradiation. The nanocomposites demonstrated high degradation rates for a mixture of rhodamine B (RhB) and methylene blue (MB) dyes within 50 min. Scavenger experiments identified superoxide anion radicals (O 2 •−) and hydroxyl free radicals (OH) as the primary active species involved in the photocatalytic degradation process. Furthermore, the study explored the influence of initial dye concentration and photocatalyst mass under optimized conditions. The interfacial contact between rGO nanosheets and SnO2 nanostructures played a crucial role in enhancing the photocatalytic performance by facilitating efficient charge carrier separation. The results indicated the efficient degradation of high concentrations of dyes and demonstrated the potential of rGO/SnO2 nanocomposites for real-world wastewater treatment applications. Overall, this study highlights the remarkable adsorption-photocatalytic synergy of rGO/SnO2 nanocomposites, offering a promising solution for the simultaneous degradation of mixed organic contaminants.

Publisher

IOP Publishing

Subject

Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3