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纳和CoSe₂联合催化剂的协同作用,提高了ZnIn₂S₄的光催化演化性能

Shuya Yuan¹, Guowei Liu¹, Qingsheng Zhang¹

¹National & Local Joint Engineering Research Center for Applied Technology of Hybrid Nanomaterials, Institute of Nanoscience and Engineering, Henan University, Kaifeng 475004, Henan, China.

Journal of colloid and interface science

|July 19, 2024

概括

对ZnIn2S4纳米片的兴奋剂增强了用于生产的光催化活性. 将纳米化ZIS与CoSe2共催化剂相结合,可显著提高的演化速率和效率.

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:

在调整光催化剂带间隙和电子结构方面,元素兴奋剂至关重要.
ZnIn2S4 (ZIS) 纳米片是一种有前途的光催化剂材料.
为增强光催化活性优化ZIS需要进行战略性修改.

研究的目的:

为了研究金属离子兴奋剂 (Li+,Na+,K+) 对ZIS纳米片的影响.
为了提高ZIS的光催化演化性能.
了解纳米兴奋剂和CoSe2共催化剂加载的协同效应.

主要方法:

简单的溶液方法用于ZIS的金属离子兴奋剂.
实验性表征 (例如,带间隙,电子结构,水友性).
理论计算以阐明兴奋剂机制.
将CoSe2共催化剂加载到纳米化ZIS上.

主要成果:

金属离子兴奋剂减少了带间隙,改善了ZIS的表面水友性.
纳米兴奋剂增加了电子密度,促进了电子的产生和利用.
纳化ZIS (Na-ZIS) 呈现出优越的光催化演变.
在Na-ZIS (CS/Na-ZIS) 上同时加载CoSe2进一步增强了电荷分离和寿命.

结论:

纳米和CoSe2共催化剂加载协同改善ZIS光催化活性.
优化的CS/Na-ZIS实现了高的H2进化率 (4525μmol·g−1·h−1) 和明显的量子效率 (27.5%在420nm).
这项研究提供了通过兴奋剂和共催化剂策略来提高光催化性能的见解.

关键词:

电荷分离器的使用方法 CoSe(2) 作为一个共催化剂.没有兴奋剂.光催化的生产方法在ZnIn(2)S(4) 中

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