Enhancing solar-driven overall water splitting via both sacrifice and noble metal free photocatalysis: copper cluster/boron-doped carbon nitride catalysts  

作　　者：Yun-Dong Cao Yuxi Zhang Jian Song Hong Liu Zhiyuan Song Lin-Lin Fan Cai-Li Lv Guang-Gang Gao 

机构地区：[1]School of Materials Science and Engineering,University of Jinan,Jinan 250022,China

出　　处：《Science China Chemistry》2024年第11期3886-3896,共11页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (21971085);the Natural Science Foundation of Shandong Province (ZR2021MB008);the Jinan City “New University 20” Project (202228113)。

摘　　要：The major impediment to the additional industrialization of water splitting is the high cost of the co-catalyst made of noble metals and the sacrificial reagent. A binary photocatalytic system, consisting of B-doped g-C_(3)N_(4) nanosheets(Cu_(20)@BCN-X) and atomically accurate copper clusters, is designed in this study. The copper clusters serve as co-catalysts for H_(2) evolution and exhibit Pt-like activity, whereas the nanosheets serve as carriers and semiconductor components for O_(2) evolution. Such binary system, created using simple techniques, demonstrates hydrogen bonding interactions that promote synergistic effects and efficient binding and charge transfer across the interface between the two components. Band position manipulation of carbon nitride nanosheets demonstrates a Z-scheme charge transfer mechanism between the nanosheets and copper clusters. This photocatalytic system can accomplish the photocatalytic overall water splitting process(259.9 μmol g^(-1)h^(-1)of H_(2) and 129.4 μmol g^(-1)h^(-1)of O_(2)) without using sacrificial agents or noble metal co-catalysts. This work lays the foundation for the design of overall water splitting catalysts by precisely manipulating the energy levels, and it also paves the way for commercialized photocatalytic catalysts that do not require noble metals or sacrificial chemicals.

关 键 词：copper clusters band modulation PHOTOCATALYSTS water splitting 

分 类 号：TQ116.2[化学工程—无机化工] O643.36[理学—物理化学] O644.1[理学—化学]