Crystal Structure Engineering of Powders for Visible-Light-Active Photocatalysts

DOI Web Site 7 References

Bibliographic Information

Other Title
  • 粉体の結晶構造制御が可能とする可視光応答型光触媒の水熱合成

Abstract

<p>The accumulation of organic pollutants in surface water, groundwater, and even drinking water have raised as a serious issue in recent decades. Semiconductor-based photocatalysis has emerged as a green and sustainable approach to find remediate solutions for environmental and energy issues. However, the fast recombination rate of photogenerated charge carriers reduces the photocatalytic efficiency of photocatalysts. In this study, a hydrothermal synthesis method is proposed for preparing four types of p–n heterojunctions, BiVO4/BiOX (X=F, Cl, Br, I). BiVO4 is an n-type semiconductor and BiOX is a p-type semiconductor. Photocatalytic activity tests showed that the BiVO4/BiOF has the best photocatalytic performance under visible light, and photoluminescence spectra confirmed the lowest recombination rate of photogenerated charge carriers for BiVO4/BiOF as compared with others. The microstructure of all samples is also investigated by scanning electron microscope and transmission electron microscope.</p>

Journal

References(7)*help

See more

Details 詳細情報について

Report a problem

Back to top