电化学（中英文）2024，Vol.30Issue(12)：28-38,11.DOI:10.61558/2993-074X.3474
电化学方法诱导强金属-载体相互作用提高氢氧化反应催化剂的CO耐受性
Electrochemical-Method-Induced Strong Metal-Support Interaction in Pt-CNT@SnO2 for CO-Tolerant Hydrogen Oxidation Reaction
摘要
Abstract
Inducing the classic strong metal-support interaction(SMSI)is an effective approach to enhance the performance of supported metal catalysts by encapsulating the metal nanoparticles(NPs)with supports.Conventional thermal reduction method for inducing SMSI processes is often accompanied by undesirable structural evolution of metal NPs.In this study,a mild electrochemical method has been developed as a new approach to induce SMSI,using the cable structured core@shell CNT@SnO2 loaded Pt NPs as a proof of concept.The induced SnOx encapsulation layer on the surface of Pt NPs can protect Pt NPs from the poisoned of CO impurity in hydrogen oxidation reaction(HOR),and the HOR current density could still maintain 85％for 2000 s with 10,000 ppm CO in H2,while the commercial Pt/C is completely inactivated.In addition,the electrons transfer from SnOx to Pt NPs improved the HOR activity of the E-Pt-CNT@SnO2,achieving the excellent exchange current density of 1.55 A·mgPt-1.In situ Raman spectra and theoretical calculations show that the key to the electrochemical-method-induced SMSI is the formation of defects and the migration of SnOx caused by the electrochemical redox operation,and the weakening the Sn-O bond strength by Pt NPs.关键词
强金属-载体相互作用/铂纳米颗粒/氢氧化反应/负载型催化剂/CO耐受性Key words
Strong metal-support interaction/Pt/Supported metal catalyst/Hydrogen oxidation reaction/CO tolerance引用本文复制引用
李申宙,林子杰,陈麒安,蔡钊,李箐..电化学方法诱导强金属-载体相互作用提高氢氧化反应催化剂的CO耐受性[J].电化学（中英文）,2024,30(12):28-38,11.基金项目
The funding for this research was provided by the"National Natural Science Foundation of China(No.22122202)". （No.22122202）
