Ultrasmall MoO x Clusters as a Novel Cocatalyst for Photocatalytic Hydrogen Evolution

Huabin Zhang, Peng Zhang, Mei Qiu, Juncai Dong, Yongfan Zhang, Xiong Wen (David) Lou

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250 Scopus citations

Abstract

To enhance the performance of semiconductor photocatalysts, cocatalysts are used to accelerate surface reactions. Herein, ultrasmall molybdenum–oxygen (MoO x ) clusters are developed as a novel non-noble cocatalyst, which significantly promotes the photocatalytic hydrogen generation rate of CdS nanowires (NWs). As indicated by extended X-ray absorption fine structure analysis, direct bonds are formed between CdS NWs and MoO x clusters, which guarantee the migration of photo-generated charge carriers. Moreover, the MoO x clusters induce deep electron trap states owing to the unique atomic arrangement and configuration with the generation of long-lived electrons to enhance the activity. These findings may guide the design of efficient cocatalytic materials for solar water splitting and open a new avenue toward practical applications of ultrasmall clusters.
Original languageEnglish (US)
JournalAdvanced Materials
Volume31
Issue number6
DOIs
StatePublished - Feb 8 2019
Externally publishedYes

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Generated from Scopus record by KAUST IRTS on 2022-09-15

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