The effect of interfacial pH on the surface atomic elemental distribution and on the catalytic reactivity of shape-selected bimetallic nanoparticles towards oxygen reduction
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- 作者：Rosa M. Ará ; n-AisaAuthor Vitae ; José ; Solla-Gulló ; naAuthor Vitae ; Martin Gocylab ; Marc HeggenbAuthor Vitae ; Rafal E. Dunin-BorkowskibAuthor Vitae ; Peter StrassercAuthor Vitae ; Enrique HerreroaAuthor Vitae ; Juan M. Feliua ; juan.feliu@ua.es" class="auth_mail" title="E-mail the corresponding authorAuthor Vitae
- 关键词：Interfacial pH ; PtNi octahedra ; Surface cleaning ; Surface composition ; Electrocatalysis ; Oxygen reduction reaction
- 刊名：Nano Energy
- 出版年：2016
- 出版时间：September 2016
- 年：2016
- 卷：27
- 期：Complete
- 页码：390-401
- 全文大小：2058 K
文摘
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Octahedral PtNi nanoparticles as ideal catalysts for the ORR.
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Pre (catalysis) treatments determine the final catalytic activity.
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Treatments under different pH environments induce substantial surface changes.
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Compositional differences between nanoparticle bulk and its surface | solution interphase.
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Species at the nanoparticles’ surface are pH-dependent and determine their reactivity.
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Modifications prompted under operation conditions are crucial for catalyst reactivity.