题目：Unraveling the roles of atomically‐dispersed Au in boosting photocatalytic CO₂ reduction and aryl alcohol oxidation

作者：Jian Lei^#, Nan Zhou^#, Shuaikang Sang, Sugang Meng*, Jingxiang Low*, Yue Li* 

单位：Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; Anhui Provincial Key Laboratory of Synthetic Chemistry and Applications; College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, 235000, China.

摘要：Atomically-dispersed metal-based materials represent an emerging class of photocatalysts attributed to their high catalytic activity, abundant surface active sites, and efficient charge separation. Nevertheless, the roles of different forms of atomically-dispersed metals (i.e., single-atoms and atomic clusters) in photocatalytic reactions remain ambiguous. Herein, we reveal the synergistic effect of Au single-atoms (Au_SA) and atomic clusters (Au_C) on enhancing the photocatalytic performance of CdS substrates towards simultaneously CO₂ reduction and aromatic alcohol oxidation. Specifically, Au_SA can effectively lower the energy barrier for the CO₂→*COOH conversion, while Au_C can enhance the adsorption of alcohols and reduce the energy barrier for the dehydrogenation. As a result, the Au_SA and Au_C co-loaded CdS show impressive overall photocatalytic CO₂ conversion performance, achieving a remarkable CO and BAD production rates of 4.43 and 4.71 mmol g⁻¹ h⁻¹, with the selectivities of 93% and 99%, respectively. More importantly, the solar-to-chemical conversion efficiency of Au_SA+C/CdS reaches 0.57%, which is over fivefold higher than the typical solar-to-biomass conversion (SBC) efficiency found in nature (ca. 0.1%). This study comprehensively describes the roles of different forms of atomically-dispersed metals and their synergistic effects in photocatalytic reactions, which is anticipated to pave a new avenue in energy and environmental applications. 

影响因子：15.7

分区情况：一区

链接： https://doi.org/10.1016/S1872-2067(24)60109-9 

（文：孟苏刚 / 审核：韩满意 / 审校：曹静 / 终审：杨振兴）