Boosting Pt oxygen reduction reaction activity by tuning the tin oxide support
Boosting Pt oxygen reduction reaction activity by tuning the tin oxide support
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DOI：
10.1016/j.elecom.2017.09.006
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发表时间：
2017-10
影响因子：
5.4
通讯作者：
E. Fabbri;Annett Rabis;Yuji Chino;M. Uchida;T. Schmidt
中科院分区：
文献类型：
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作者：
E. Fabbri;Annett Rabis;Yuji Chino;M. Uchida;T. Schmidt
系统研究了掺杂元素对sno2载体的物理化学性质和负载Pt纳米颗粒氧还原反应活性的影响。掺杂元素和浓度对负载Pt催化剂的sno2晶体结构、电导率以及0.1 M hclo4中ORR活性有显著影响。在铌掺杂和钨掺杂的SnO2上负载的Pt纳米颗粒的ORR活性明显超过沉积在碳上的Pt。载体电导率与ORR活性之间不存在线性相关关系，这表明其他因素，如（电子）金属-载体相互作用，可能对金属氧化物负载Pt催化剂的ORR活性起作用。
The influence of the dopant element on the physicochemical properties of the SnO2support and on the oxygen reduction reaction (ORR) activity of the supported Pt nanoparticles was systematically studied. The dopant element and concentration significantly influence the SnO2crystal structure and the electrical conductivity, as well as the ORR activity in 0.1 M HClO4of the supported Pt catalysts. ORR activities significantly exceeding that of Pt deposited on carbon were observed for Pt nanoparticles supported on Nb- and W-doped SnO2. No linear correlation between the support conductivity and the ORR activity was observed, suggesting that other factors, such as (electronic) metal–support interactions, could play a role in the ORR activity of Pt catalysts supported on metal oxides.