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S-scheme Cu₃P/TiO₂异质连接用于突出的光催化水分裂

Kexin Wang¹, Zhongge Luo¹, Bin Xiao¹

¹Yunnan Key Laboratory for Micro/Nano Materials & Technology, National Center for International Research on Photoelectric and Energy Materials, School of Materials and Energy, Yunnan University, Kunming 650091, China.

Journal of colloid and interface science

|September 10, 2023

概括

一种新的S-方案Cu3P/TiO2异质连接复合物被合成,用于增强的生产. 这种光催化剂显著提高了气生成率,为清洁能源应用提供了一个有前途的解决方案.

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
可再生能源可再生能源是可再生能源.

背景情况:

二氧化 (TiO2) 是一个有前途的光催化剂,由于其低成本,稳定性和无毒性.
然而,光生成载体的严重重组限制了TiO2在环境净化和能源转化等应用中的效率.
开发先进的光催化材料对于克服这些局限性至关重要.

研究的目的:

为了合成S方案Cu3P/TiO2异质连接复合材料.
为了研究它们在模拟阳光下在生产中的效率.
阐明它们增强的光催化活性背后的机制.

主要方法:

微波热水合成Cu3P/TiO2异质连接复合材料.
在模拟太阳辐射下测量光催化生产速度.
密度函数理论 (DFT) 计算以了解电子结构和电荷转移.

主要成果:

合成的Cu3P/TiO2复合物表现出5.83mmol·g-1·h-1的生产率.
这一比率是纯TiO2的7.3倍,是纯Cu3P的83.3倍.
DFT的计算证实了S-scheme异质连接的形成,促进了电荷分离,并改善了H+的减少.

结论:

这种S模式的Cu3P/TiO2异质连接有效地抑制了光生成载体重组.
异质连接的独特电子结构提高了生产性能.
这项研究提供了关于光催化 S 模式异质连接中的电荷转移机制的见解.

关键词:

光生成电子的方向调制.光催化的生产方法这就是S-scheme异构连接的异构连接.抑制载体重组组合的发生.

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