化学试剂2026，Vol.48Issue(1)：28-35,8.DOI:10.13822/j.cnki.hxsj.2025.0253
构建高催化活性的BiVO4@Ag复合材料
Synthesis of Highly Active BiVO4@Ag Composites with Enhanced Catalytic Performance
蔡旭鹏 1王月荣 1蔡依辰 1洪先健 1郭少波 1郭小华 1季晓晖1
作者信息
- 1. 陕西理工大学化学与环境科学学院,陕西汉中 723000
- 折叠
摘要
Abstract
This study addressed the issues of high carrier recombination rates and sluggish surface reaction kinetics in bismuth vanadate(BiVO4)photocatalysts.Using spherical BiVO4 as the substrate,BiVO4@Ag-6％composite materials were constructed via three distinct photochemical reduction methods(direct reduction,silver-ammonia complex reduction,and potassium bromide-mediated reduction).The effects of different loading methods on the microstructure and photocatalytic performance of the materials were systematically investigated.The structure and properties of the composite materials were systematically characterized using transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD),ultraviolet-visible diffuse reflectance spectroscopy(UV-Vis DRS),and electrochemical measurements.Experimental results indicated that the target material prepared via the potassium bromide-controlled reduction method exhibits superior catalytic activity.The AgBr complex-mediated Ag+release mechanism significantly optimizes the dispersion and interfacial bonding strength of Ag nanoparticles(Ag NPs),resulting in optimal photocatalytic degradation activity for Cr6+and Rhodamine B(RhB)with complete Cr6+degradation within 20 min and a markedly enhanced RhB degradation efficiency compared to pure BiVO4.Characterization analysis attributes this superior performance to the synergistic effects of surface plasmon resonance(SPR)and the Schottky barrier in Ag NPs,which effectively suppressed carrier recombination and accelerate interfacial charge transport.关键词
BiVO4/银纳米颗粒(Ag NPs)/光催化降解/等离子体共振效应(SPR)/降解率Key words
BiVO4/silver nanoparticles(Ag NPs)/photocatalytic degradation/surface plasmon resonance(SPR)/degradation rate分类
化学化工引用本文复制引用
蔡旭鹏,王月荣,蔡依辰,洪先健,郭少波,郭小华,季晓晖..构建高催化活性的BiVO4@Ag复合材料[J].化学试剂,2026,48(1):28-35,8.
