期刊
ACS APPLIED ENERGY MATERIALS
卷 5, 期 12, 页码 14652-14657出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.2c03083
关键词
photocatalyst; cadmium sulfide; flux method; hydrogen production; wurtzite structure
资金
- [JP22J00535]
- [JP20H00325]
This study successfully prepared highly crystalline wurtzite CdS particles with exposed crystal facets and fewer sulfur defects through a new heat treatment method. Compared to traditional methods, this method does not require vacuum or highly toxic conditions, and effectively improves the hydrogen evolution activity.
Highly crystalline wurtzite CdS particles with exposed crystal facets and fewer sulfur defects have been successfully prepared by heat treatment of zincblende CdS in a mixed molten salt. This method does not require a vacuum or highly toxic hydrogen sulfide conditions as in conventional annealing methods or high pressure as in conventional flux methods. The obtained wurtzite CdS photocatalyst with a Pt cocatalyst shows hydrogen evolution activity under visible light, in the presence of sulfide sacrificial reagents, and its external quantum yield at 420 nm is 19.2%. The activity is similar to 50-fold higher than that of the zincblende CdS precursor and about twice as high as that of wurtzite CdS prepared by vacuum annealing, both with a Pt cocatalyst.
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