Ultra-small Tetrametallic Pt-Pd-Rh-Ag Nanoframes with Tunable Behavior for Direct Formic Acid/Methanol Oxidation

Faisal Saleem; Bing Ni; Yang Yong; Lin Gu; Xun Wang

doi:10.1002/smll.201601299

Ultra-small Tetrametallic Pt-Pd-Rh-Ag Nanoframes with Tunable Behavior for Direct Formic Acid/Methanol Oxidation

Small. 2016 Oct;12(38):5261-5268. doi: 10.1002/smll.201601299. Epub 2016 Aug 23.

Authors

Faisal Saleem¹, Bing Ni¹, Yang Yong¹, Lin Gu², Xun Wang³

Affiliations

¹ Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China.
² Institute of Physics, Chinese Academy of Science, Beijing, 100190, P. R. China.
³ Key Lab of Organic Optoelectronics and Molecular Engineering, Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China. wangxun@mail.tsinghua.edu.cn.

PMID: 27550307
DOI: 10.1002/smll.201601299

Abstract

Reversible tuning of ultra-small multimetallic Pt-Pd-Rh-Ag nanoframes is achieved. These nanoframes showed tunable and reversible modes for the oxidation of small organic molecules by simply inducing segregation with adsorbates, such as SO₄^2- and OH^- . This is the first example of reversible segregation under electrocatalytic conditions in atomic-sized electrocatalysts. These nanoframes also showed a controllable activity and good stability for the oxidation of small organic molecules.

Keywords: anodes; electrocatalysts; fuel cells; nanoframes; tunable properties.