光催化
载流子
量子点
化学
掺杂剂
兴奋剂
纳米技术
电荷(物理)
激子
光电子学
光化学
材料科学
催化作用
凝聚态物理
物理
生物化学
量子力学
作者
Meng Zhang,Chen Li,Jin Wang,Zhihao Chen,Guocan Jiang,Qiaowen Zhang,Zhengquan Li
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2024-01-12
卷期号:63 (4): 2234-2240
被引量:1
标识
DOI:10.1021/acs.inorgchem.3c04196
摘要
Converting CO2 into high-value-added chemicals has been recognized as a promising way to tackle the fossil fuel crisis. Quantum dots (QDs) have been extensively studied for photocatalytic CO2 reduction due to their excellent optoelectronic properties. However, most of the photogenerated charge carriers recombine before they participate in the photocatalytic reaction. It is crucial to regulate the charge carriers to minimize undesired charge recombination, thus, promoting surface photocatalysis. Herein, we report a copper-doped CdS (Cu:CdS) QD photocatalyst for CO2 reduction. Density functional theory simulations and experimental results demonstrate that Cu dopants create intermediate energy levels in CdS QDs that can extend the lifetime of exciton charge carriers. Furthermore, the long-lived charge carriers can be harnessed for the photocatalytic reaction on Cu:CdS QDs. The resultant Cu:CdS QDs exhibited a significantly enhanced photocatalytic activity toward CO2 reduction compared to the pristine CdS QDs. This work highlights the importance of charge regulation in photocatalysts and opens new pathways for the exploration of efficient QD photocatalysts.
科研通智能强力驱动
Strongly Powered by AbleSci AI