同时的缺陷被动化和共催化剂工程导致金属化物洛夫斯基特上优异的光催化进化
Ting Xu1, Yuxin Xie2, Shengliang Qi1
1Marine Engineering College, Dalian Maritime University, Dalian, Liaoning, 116026, China.
Angewandte Chemie (International ed. in English)
|July 20, 2024
概括
这项研究通过添加硫化 (PbS) 和无形硫化 (MoSx) 联合催化剂来增强使用金属化矿 (MHP) 的绿色生产. 这种双功能的提高太阳能到化学效率,通过减少缺陷和促进进化反应活动.
科学领域:
- 材料科学 材料科学 材料科学
- 光催化作用的光催化
- 绿色化学 绿色化学
背景情况:
- 金属化物矿 (MHPs) 显示出对光催化绿色生产的前景.
- 缺陷和缺乏活跃地点限制了MHP的太阳能到化学 (STC) 效率.
- 有效的演化反应 (HER) 对于可持续的生成至关重要.
研究的目的:
- 为MHPs制定双功能化战略,以增强光催化生产.
- 为了解决与缺陷相关的电荷重组,并改善 HER 的活性.
- 为了实现高的太阳能到化学 (STC) 转换效率,用于绿色的产生.
主要方法:
- 用分子硫联合催化剂前体装饰MHP.
- 在MHP表面同时形成硫化 (PbS) 和无形硫化 (MoSx) 联合催化剂.
- 利用和硫之间的化学相互作用,使联合催化剂分散均.
主要成果:
- 用PbS和无形MoSx联合催化剂对MHP进行均的装饰.
- PbS辅助催化剂使与Pb相关的缺陷无效,减少电荷重组.
- 无形MoSx促进了电子提取和HER催化.
- PbS和MoSx的协同作用导致显著增强的光催化HER活性.
结论:
- 双功能化策略有效地提高了MHP光催化性能.
- 实现了太阳能到化学 (STC) 转换效率约为4.63%的双功能化FAPbBr3-xIx.
- 这种效率是MHP在光催化生产中报告的最高效率之一.
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