Pt/TiO_2催化剂的载体结构对甲醇催化氧化性能的影响（英文）  

Influence of TiO_2 architecture on the performance of supported Pt catalysts for methanol oxidation

作　　者：金梅梅[1] 王新德[1] 贾建洪[1] 董华青[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,杭州310014

出　　处：《原子与分子物理学报》2015年第3期519-525,共7页Journal of Atomic and Molecular Physics

基　　金：浙江省科技项目(2011C21008)

摘　　要：二氧化钛载体包括二氧化钛纳米管阵列(TNTAs)和二氧化钛纳米线阵列(TNWAs)两种,载体的结构不同对催化性能有一定的影响.然而,Pt负载在TNTAs和TNWAs催化性能的比较鲜有报道.本文通过微波法制备了Pt/TNTAs和Pt/TNWAs两种催化剂,结果表明,Pt/TNTAs催化甲醇氧化效果要优于Pt/TNWAs.相较于Pt/TNWAs,Pt/TNTAs的优越催化性能可能与纳米管的限域效应有关.可见,载体的结构对催化剂的性能有很大的影响.The architecture of TiO2 supports includes two main types：TiO2 nanotube arrays （ TNTAs） and TiO2 nanowire arrays （ TNWAs） , which have a strong influence on the catalysis properties, however, comparison of the catalysis performance of Pt supported on TNTAs and TNWAs has not been studied yet.In this work, we stud-ied the performances of the two TiO2 supported Pt catalysts for methanol oxidation.Pt/TNTAs and Pt/TNWAs were prepared by microwave heating method.The results demonstrate that Pt/TNTAs show a superior perform-ance than supported on TNWAs for methanol oxidation.We speculate that the excellent activities of Pt/TNTAs are due to the confinement effects.The study reveals that support architecture plays an important role in the per-formances of Pt catalysts for methanol oxidation.

关 键 词：二氧化钛 结构 PT催化剂 甲醇氧化 限域效应 

分 类 号：O649.1[理学—物理化学]