接口工程 S 方案 CoMoO4/CN 异质连接与 N-空位调节:在 PMS 激活的光催化中,光生成的洞主导的非激进通路
Qiting Zhu1, Qingqing Shi1, Yaqi Hou2
1School of Chemical Sciences, University of Chinese Academy of Sciences, 19(A) Yu Quan Road, Beijing 100049, China.
Journal of colloid and interface science
|July 20, 2025
概括
一种新型的S系异质连接催化剂CoMoO4/碳化物与空位 (CMO/CN-Nv),利用可见光和酸盐 (PMS) 激活,有效降解有机污染物. 这种缺陷工程催化剂增强了电荷转移,并利用孔和单点氧来进行优质的污染物去除.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 光催化作用的光催化
背景情况:
- 光催化效率受到光生成载体重组的限制.
- S-方案异质连接和硫酸盐 (PMS) 激活可以提高效率.
- 构建高效的S-scheme催化剂和理解它们的机制仍然具有挑战性.
研究的目的:
- 合成一种新型的S-方案异构结催化剂 (CMO/CN-Nv) 用于PMS激活辅助光催化.
- 在可见光下探索有机污染物的氧化反应机制.
- 调查缺陷工程和界面电荷传输的作用.
主要方法:
- 热化合成的 CoMoO4/CN-Nv (CMO/CN-Nv) S 方案异质连接.
- 在可见光下PMS激活辅助的p-nitrophenol (PNP) 的光催化降解.
- 电子磁共振 (EPR),光电化学和XPS分析以阐明机制.
主要成果:
- 45CMO/CN-Nv/PMS/Vis系统在15分钟内实现了100%的PNP去除.
- 洞 (h+) 和单点氧 (1O2) 被确定为主要活性物种.
- S-scheme结构显著增强了h+利用和载体分离/转移.
结论:
- 合成的CMO/CN-Nv催化剂在污染物降解方面表现出卓越的性能.
- 空位和S型结构协同增强PMS激活和光催化.
- 这项研究为通过缺陷工程处理复杂有机污染物提供了一个有希望的策略.
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