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Developing a built-in electric field in CdS nanorods by modified MoS2 for highly efficient photocatalytic H2O2 production
Journal of Catalysis ( IF 6.5 ) Pub Date : 2022-11-14 , DOI: 10.1016/j.jcat.2022.11.016
Rujin Li , Dan Zhang , Yan Shi , Chunxiang Li , Yuping Long , Min Yang

Light-driven O2 reduction reaction is regarded as a green and simple approach for H2O2 production in contrast with the industrial process. Along these lines, CdS nanorods (CdS NRs) were fabricated by the solvothermal method and modified by MoS2 in this work. From the Kelvin probe measurements, the existence of a built-in electric field (BEF) was demonstrated. The electric field that was developed at the interface between CdS and MoS2 could elevate the separation efficiency of the photo-induced electron-hole pairs, ensuring a high photocatalytic H2O2 production performance. Moreover, the incorporation of MoS2 provides a much larger active area and improves the stability for long-time utilization. The CdS NRs/MoS2 composites also display especially improved capacities for the efficient photocatalytic H2O2 production with 1350 μM h−1. A novel and feasible strategy is introduced to enhance the photocatalytic H2O2 production activity of CdS NRs, which will be beneficial to H2O2 evolution in actual applications.



中文翻译:

通过改性 MoS2 在 CdS 纳米棒中开发内置电场以高效光催化生产 H2O2

与工业过程相比,光驱动的O 2还原反应被认为是一种绿色且简单的H 2 O 2生产方法。沿着这些思路,在这项工作中,CdS 纳米棒 (CdS NRs) 通过溶剂热法制造并通过 MoS 2进行改性。通过开尔文探针测量,证明了内置电场 (BEF) 的存在。在 CdS 和 MoS 2之间的界面处形成的电场可以提高光生电子空穴对的分离效率,从而确保高光催化 H 2 O 2生产性能。此外,MoS 2的加入提供更大的活动区域并提高长时间使用的稳定性。CdS NRs/MoS 2复合材料还显示出特别改进的高效光催化 H 2 O 2生产能力,1350 μM h -1。引入了一种新颖可行的策略来增强 CdS NRs 的光催化 H 2 O 2生产活性,这将有利于实际应用中的 H 2 O 2释放。

更新日期:2022-11-19
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