用添加的单晶四度硫化物纳米带使可见光光催化的高效演变成为可能
Liang Wu1, Fuhai Su2, Tian Liu1
1Department of Chemistry, Institute of Biomimetic Materials & Chemistry, Anhui Engineering Laboratory of Biomimetic Materials, Division of Nanomaterials & Chemistry, Hefei National Research Center for Physical Sciences at the Microscale, Institute of Energy, Hefei Comprehensive National Science Center, University of Science and Technology of China, Hefei230026, China.
Journal of the American Chemical Society
|November 4, 2022
概括
在单晶四级硫化物纳米带中使用可以提高太阳能转化为的产量. 这一战略改善了电荷分离和传输,提高了清洁燃料的光催化效率.
科学领域:
- 材料科学
- 光催化
- 可再生能源
背景情况:
- 有效的太阳能转换依赖于优化半导体材料中的电荷分离和传输.
- 元素化是一种有前途的策略,用于调整半导体特性以提高光催化.
- 对二维 (2D) 单晶四度硫化物 (SCQS) 纳米带在光催化应用中的潜力进行了研究.
研究的目的:
- 研究 (P) 兴奋剂对二维SCQS纳米带的电荷动态和光催化产生的影响.
- 阐明P兴奋剂提高太阳能转化为的效率的机制.
- 证明P兴奋剂用于改善半导体光催化剂的一般适用性.
主要方法:
- 合成P-doped和原始的2D单晶四度硫化物纳米带 (例如,Cu-Zn-In-S).
- 材料特性,包括带间隙,载体动力学和电导性.
- 在没有可见光照射的情况下评估光催化生产率.
主要成果:
- 化缩小了带间隙,并增加了SCQS纳米带的电导率.
- 合物有效抑制光生成载体的重组.
- 与原始样本相比,P-doped Cu-Zn-In-S (CZIS) 纳米带的生成率达到12.2 mmol h-1 g-1.
- 该策略对于其他半导体如Cu-Zn-Ga-S (CZGS) 纳米带也取得了成功.
结论:
- 兴奋剂是一种有效的方法来增强2DSCQS纳米带的电荷分离和传输.
- 改善的光催化性能是由于带间隙缩小,载体重组减少和导电性增加.
- 这项工作为开发太阳能生产的高效光催化剂提供了可行的策略.
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