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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.
Titanium dioxide supports include two kinds of titanium dioxide nanotube arrays (TNTAs) and titanium dioxide nanowire arrays (TNWAs), and the different structures of the supports have some influence on the catalytic performance. However, the relatively small catalytic activity of Pt on TNTAs and TNWAs has been relatively poorly reported. The results showed that the catalytic effect of Pt / TNTAs on the oxidation of methanol is better than that of Pt / TNWAs. Compared with Pt / TNWAs, the superior catalytic performance of Pt / TNTAs may be related to that of nano- The limiting effect of the tube shows that the structure of the support has a great influence on the performance of the catalyst.