Induced dipole moments in amorphous ZnCdS catalysts facilitate photocatalytic H2 evolution

被引:76
|
作者
Wang, Xin [1 ]
Liu, Boyan [1 ]
Ma, Siqing [1 ]
Zhang, Yingjuan [1 ]
Wang, Lianzhou [2 ,3 ]
Zhu, Gangqiang [4 ]
Huang, Wei [1 ]
Wang, Songcan [1 ]
机构
[1] Northwestern Polytech Univ, Xian Inst Flexible Elect IFE, Frontiers Sci Ctr Flexible Elect, 127 West Youyi Rd, Xian 710072, Peoples R China
[2] Univ Queensland, Nanomat Ctr, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia
[3] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia
[4] Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China
基金
中国国家自然科学基金; 澳大利亚研究理事会;
关键词
SOLID-SOLUTION; HETEROJUNCTION; SEPARATION; SHEETS;
D O I
10.1038/s41467-024-47022-z
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Amorphous semiconductors without perfect crystalline lattice structures are usually considered to be unfavorable for photocatalysis due to the presence of enriched trap states and defects. Here we demonstrate that breaking long-range atomic order in an amorphous ZnCdS photocatalyst can induce dipole moments and generate strong electric fields within the particles which facilitates charge separation and transfer. Loading 1 wt.% of low-cost Co-MoSx cocatalysts to the ZnCdS material increases the H-2 evolution rate to 70.13 mmol g(-1) h(-1), which is over 5 times higher than its crystalline counterpart and is stable over the long-term up to 160 h. A flexible 20 cm x 20 cm Co-MoSx/ZnCdS film is prepared by a facile blade-coating technique and can generate numerous observable H-2 bubbles under natural sunlight, exhibiting potential for scale-up solar H-2 production.
引用
收藏
页数:11
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