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在废水处理中,工程设计了一种分级的II型Bi₂WO₆/WO₃异质连接,其光催化活性得到改善

Artem S Belousov¹, Alina A Parkhacheva¹, Valeria A Shotina¹

¹Lobachevsky State University of Nizhny Novgorod, Gagarin Avenue 23, Nizhny Novgorod, 603950, Russian Federation.

|May 12, 2024

概括

这项研究开发了分阶段的II型Bi₂WO₆/WO₃异质连接,以实现高效的废水处理. 优化的光催化剂实现了94.1%的甲蓝去除,证明了其降解有机污染物的潜力.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
纳米技术纳米技术

背景情况:

先进的氧化工艺 (AOP) 是环保且具有成本效益的,用于从废水中去除有机污染物.
光催化,一种AOP,是环境修复的一个有前途的技术.
开发高效的光催化剂对于推进废水处理技术至关重要.

研究的目的:

为了合成和描述分层的II型Bi₂WO₆/WO₃异构连接光催化剂.
评估合成材料在有机污染物降解中的光催化性能.
研究降解机制和反应性物种在该过程中的作用.

主要方法:

简单的水热合成Bi₂WO₆/WO₃异质连接.
使用X射线衍射,扫描电子显微镜,吸附-溶解和分散反射谱的物理化学表征.
使用甲蓝和其他有机污染物进行光催化降解实验,H₂O₂作为辅助催化剂.

主要成果:

优化的BWOW-5光催化剂在180分钟内显示出94.1%的高甲蓝去除效率.
异质连接结构促进了光生成的电荷载体的有效分离,增强了光催化活性.
捕获实验证实,基和洞是负责光降解的主要反应物种.

结论:

渐变的II型Bi₂WO₆/WO₃异质连接是有机污染物去除的有效光催化剂.
增强的性能归因于在异质连接处内改善的电荷载体分离.
本研究提供了一个设计策略,用于开发用于多功能环境应用的先进Bi₂WO₆基复合材料.

关键词:

先进的氧化过程具有先进的氧化过程.异质连接异质连接异质连接光催化剂是一种光催化剂.可见光可见光是一种可见光.污水处理污水处理污水处理

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