Construction of hierarchical photocatalysts by growing ZnIn2S4 nanosheets on Prussian blue analogue-derived bimetallic sulfides for solar co-production of H2 and organic chemicals

• 作者: Liangxuan Zhong Baodong Mao Meng Liu Mingyue Liu Yaqiu Sun Yi-Tao Song Zhi-Ming Zhang Tong-Bu Lu
• 来源期刊: 能源化学
• 年，卷（期）: 2021,（3）
• 页码范围: 386-394
• 页数: 9页
• 语种: 英文

摘要

Exploring highly efficient bifunctional photocatalysts for simultaneous H2 evolution and organic chemical production in pure water represents a green route for sustainable solar energy storage and conversion.Herein,a facile strategy was explored for preparing a hierarchical porous heterostructure of Fe4Ni5S8@Znln2S4(FNS@ZIS)by the in situ growth of ZIS nanosheets on Prussian blue analogue(PBA)-derived bimetallic FNS sulfides.A series of FNS@ZIS hierarchical structures were facilely prepared by adjusting the loading amount(n％)of FNS(n = 19,26,and 32 for FNS@ZIS-1-3).These structures can effi-ciently drive the solar co-production of H2 and organic chemicals.The optimal co-production was achieved with FNS@ZIS-2,affording a H2 evolution rate of 10465 μmol·g-1·h-1,along with high selectivity for the oxidation of benzyl alcohol to benzaldehyde(＞99.9％).The performance was 22 and 31 times higher than that of FNS and ZIS,respectively,and even superior to the state-of-the-art results achieved using various sacrificial agents.Further mechanistic study indicated that the unique hierarchical core/shell architecture can facilitate interfacial charge separation,afford bimetallic synergy,abundant active sites and excellent photostability.This work highlights a simple and efficient method for preparing por-ous multimetallic hierarchical structures for the solar co-production of organic chemicals and H2 fuel.