宁夏大学学报（自然科学版）2025，Vol.46Issue(3)：248-255,8.
LSPR效应对Au/ZnO催化剂光热催化CH4氧化制CH3OH性能的影响
IInfluence of LSPR Effect on the Photothermal Catalytic Performance of Au/ZnO for CH4 Oxidation to CH3OH
摘要
Abstract
By controlling the calcination temperature,Au/ZnO catalysts with different particle sizes(2‒13 nm)were prepared to explore the influence of the intensity of localized surface plasmon resonance(LSPR)on the performance of the catalyst under photothermal conditions.Characterization of the catalysts and reaction inter-mediates was conducted using X-ray powder diffraction,specific surface area and porosity analyzers,field emis-sion transmission electron microscopy,UV-Vis diffuse reflectance spectroscopy,steady-state fluorescence spec-troscopy,and electron paramagnetic resonance spectroscopy.The catalytic activity was assessed through photo-thermal catalytic CH4 oxidation experiments,and liquid and gas phase products were analyzed using nuclear magnetic resonance spectroscopy and gas chromatography.Results indicate that as the calcination temperature increases,the particle size of Au nanoparticles enlarges,and the LSPR effect intensifies with increasing particle size.An optimal LSPR effect enhances the separation of photo-generated charge carriers through a hot electron injection mechanism,thus improving the catalyst's activity.However,excessive LSPR intensity results in an oversupply of hot electrons that accelerates charge recombination,thereby reducing the catalytic performance of the catalyst under photothermal conditions.The findings provide important insights into analyzing the influence of noble metal LSPR effects on catalytic performance and designing efficient photothermal catalytic systems for selective CH4 conversion.关键词
CH4氧化/CH3OH/光热催化/Au/局域表面等离子体共振效应Key words
methane oxidation/methanol/photothermal catalysis/Au/localized surface plasmon resonance effect分类
化学化工引用本文复制引用
李虾,王骏郅,傅亚杰,MASAKAZU Anpo,谭理..LSPR效应对Au/ZnO催化剂光热催化CH4氧化制CH3OH性能的影响[J].宁夏大学学报（自然科学版）,2025,46(3):248-255,8.基金项目
国家重点研发基金资助项目(2022YFB410800) （2022YFB410800）
国家自然科学基金资助项目(22172032 （）
U22A20431) （）
