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通过构建H₂WO₄/Ti₃C₂/g-C₃N₄Z模式光催化剂来加速电子和质量转移,用于环境修复

Qiang Li¹, Erpeng Wang², Hao Zhou¹

¹School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China.

|September 10, 2023

概括

在可见光下,一种新的H2WO4/Ti3C2/g-C3N4 (HTC) Z-方案异质连接有效地去除了97.4%的Cr (VI) 和96%的四环素. 这种基于MXene的材料增强了电子和质量转移,以有效地改善环境.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
纳米技术纳米技术

背景情况:

光催化剂的效率依赖于电子运输和质量转移.
Z模式的异质连接提供了增强的光催化活性.
在复合光催化剂中,MXene材料显示出前景.

研究的目的:

设计和准备一个有效的H2WO4 / Ti3C2 / g-C3N4 (HTC) Z方案异质连接.
研究Ti3C2在改善电子和质量转移中的作用.
评估HTC在Cr(VI) 清除和四环素降解方面的光催化性能.

主要方法:

用于异质连接合成的接口工程.
可见光光催化实验用于Cr (VI) 减少和四环素降解.
测量光电流和DFT计算,以研究电荷传输动态.
HPLC-MS分析用于降解产品的识别和QSAR用于毒性估计.

主要成果:

在10分钟内,HTC异质连接去除了97.4%的Cr (VI) 和在30分钟内去除了96%的四环素.
引入Ti3C2增加了21倍的Cr (VI) 减少率,64倍的电子导电性和1064倍的离子扩散.
DFT的计算证实了Z计划机制和内部电场促进电荷转移.
观察到对大肠杆菌 (98.4%) 和金黄色杆菌 (99.7%) 的高抗菌效率.

结论:

通过改进的电子和质量转移,HTC Z-scheme异质连接显著提高了光催化效率.
Ti3C2在提高异质连接的性能方面发挥着至关重要的作用.
开发的材料显示了环境修复应用的巨大潜力,包括污染物降解和抗菌活性.

关键词:

异质连接异质连接异质连接这就是MXene MXene.多功能的多功能功能.采用Z-方案的光催化剂.

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