中国石油大学学报（自然科学版）2024，Vol.48Issue(1)：176-181,6.DOI:10.3969/j.issn.1673-5005.2024.01.019
尖端Pt负载纳米Au棒的制备及其催化还原4-硝基苯酚
Preparation of Pt-loadedon Au nanorod and its catalytic reduction of 4-nitrophenol
摘要
Abstract
Gold nanorods(AuNRs)with aspect ratio of about 4 were prepared by the seed growth method,and Pt were load-ed on gold nanorods by KI etching method to prepare Pt-Au nanorods(Pt-AuNRs).A series of conventional characterizations like UV-Vis spectrophotometry,transmission electron microscopy,and X-ray photoelectron spectroscopy were used to identify the physicochemical properties of AuNRs and Pt-AuNRs.The catalytic reduction of 4-nitrophenol(4-NP)with AuNRs and Pt-AuNRs as catalysts in the presence of NaBH4 was studied.The mechanism of Pt-AuNRs catalytic reduction of 4-NP was proposed for the first time.The results show that 500-Pt-AuNRs catalyst presents the best catalytic performance,and the rate constant Kapp = 0.3836 min-1,which is 4.7 times that of AuNRs catalyst.The special heterostructure,high surface activity and stability of Pt-AuNRs contribute to the high adsorption and electron transfer of BH-4 on its surface.关键词
AuNRs/Pt-AuNRs/4-硝基苯酚/催化还原Key words
AuNRs/Pt-AuNRs/4-nitrophenol/catalytic reduction分类
化学化工引用本文复制引用
付云芝,陈笑霖,姚帅琪..尖端Pt负载纳米Au棒的制备及其催化还原4-硝基苯酚[J].中国石油大学学报（自然科学版）,2024,48(1):176-181,6.基金项目
国家自然科学基金项目(22162009) （22162009）
