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全合一光催化生成的碳纳米点

Bikash Jana¹, Yana Reva¹, Tobias Scharl¹

¹Department of Chemistry and Pharmacy, Interdisciplinary Center for Molecular Materials (ICMM), Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 3, 91058 Erlangen, Germany.

Journal of the American Chemical Society

|November 29, 2021

概括

通过光化学改变的碳纳米点 (CND) 从水和海水中有效地产生二. 这些CND作为光催化剂,在没有外部添加剂的情况下表现出高演变反应 (HER) 活性.

科学领域:

材料科学
摄影化学
催化剂

背景情况:

碳纳米点 (CND) 是具有独特光学和电子特性的多功能纳米材料.
光催化生产是可再生能源研究的一个关键领域.

研究的目的:

研究 CND 的光化学变化,以提高二的产生.
探索CND作为进化的光吸收器和光催化剂的双重功能.

主要方法:

对CND进行光化学修饰.
使用稳定状态和时间分辨率光谱和显微镜进行表征.
在光照射下评估演变反应 (HER) 的活性.

主要成果:

通过光化学改变CND,从水和海水中产生二.
记录了 15. 15 和 19. 70 mmol ((H2) g ((催化剂) - 1 h - 1 的 HER 活动.
光氧化发生在CND中的酸位.

结论:

在没有外部光敏感剂或催化剂的情况下,改变的CND表现出高效的光触媒二生产.
通过牺牲电子供体进行预催化激活对于有效的二形成至关重要.
这项研究提供了基于CND的光催化反应机制的见解.

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