Silver vanadate-coupled yttrium orthovanadate nanocomposite: An improved photocatalyst for amended visible-light-driven hydrogen evolution

被引：3

作者：

Albukhari, Soha M. ^{[1
]}

机构：

[1] King Abdulaziz Univ, Fac Sci, Dept Chem, POB 80203, Jeddah 21589, Saudi Arabia

来源：

OPTICAL MATERIALS | 2023年 / 144卷

关键词：

Hydrogen production; Visible-light photocatalysis; Nanocomposits; Recyclability; Solar-fuel production; FACILE SYNTHESIS; HYDROTHERMAL METHOD; CHARGE SEPARATION; PHOTODEGRADATION; DEGRADATION; EFFICIENT; HETEROJUNCTIONS; REDUCTION; GLYCEROL; ROUTE;

D O I：

10.1016/j.optmat.2023.114383

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The synthesis of yttrium orthovanadate (YVO4) by surfactant-aided sol-gel method is presented in this work. To enhance the visible-light activity of YVO4, 4.0-16.0 wt % of silver vanadate (AVO) nanoparticles were coupled by simple impregnation. The formed nanocomposites were applied for hydrogen (H2) production by photocatalytic reaction in a glycerol/water mixture with traces of platinum as a cocatalyst. The incorporation of 12.0 wt% AVO has boosted the H-2 evolution by > 130 times (3.000 mmol g(-1)h(-1)) to the pure YVO4 (0.023 mmol g(-1)h(-1)). These outcomes were attributed to the efficient separation of photogenerated charges as well as bandgap reduction to 2.35 eV compared to 3.54 eV in pristine YVO4. The produced H-2 could be furtherly enhanced to 3.750 mmol g(-1)h(-1) by optimizing the photocatalyst amount at 2.0 g L-1. This innovative nanocomposite could also maintain its ability to produce 96% of its original H-2 amount after the fifth regeneration cycle as well.

引用

页数：8