“双碳”目标下稀土改性光催化制氢路径

Path of Hydrogen Production Using Rare Earth Modified Photocatalysts in the Context of the“Double Carbon”Targets

氢能是国际上公认的清洁新能源,光催化制氢是重要的绿氢制备方法,但常用的光催化剂存在带隙较宽、光催化效率较低且电子-空穴易复合等技术瓶颈,用稀土金属改性光催化剂的路径可有效提高制氢催化效果。从新能源利用与化学改性的角度出发,通过综合评述国内外稀土改性光催化制氢的研究现状,重点对比了La(镧)、Ce(铈)等稀土改性光催化剂机理和改性效果,分析和总结了目前稀土改性光催化剂在增强光利用率、提高可见光响应性、减少电子-空穴复合等方面的影响和效果,提出未来稀土在改性光催化剂制氢可深入研究的策略方向。

Hydrogen energy is a globally recognized clean new energy,and photocatalytic hydrogen production is an important hydrogen preparation technology.Wide band gaps,low photocatalytic performance,and facile electron-hole recombination are all technological barriers in commonly used photocatalysts.Modifying photocatalysts using rare earth metals can significantly boost the catalytic impact of hydrogen production.This article comprehensively reviews the current research status of hydrogen production with rare earth modified photocatalysts in China and abroad,and compares the mechanism and effects of rare earth modified photocatalysts such as La(lanthanum)and Ce(cerium).It also investigates the impact and effect of rare earth modified photocatalysts on light usage,visible light responsiveness,and electron-hole recombination.Finally,it suggests a strategy for future study on hydrogen generation utilizing rare earth modified photocatalysts.