Platinum nanoparticles photo-deposited on SnO2-C composites: An active and durable electrocatalyst for the oxygen reduction reaction

被引：51

作者：

Hussain, Sajid ^{[1
,5
]}

Kongi, Nadezda ^{[1
]}

Erikson, Heiki ^{[1
]}

Rahn, Mihkel ^{[2
]}

Merisalu, Maido ^{[1
,2
]}

Matisen, Leonard ^{[2
]}

Paiste, Paarn ^{[3
]}

Aruvali, Jaan ^{[3
]}

Sammelselg, Vaino ^{[1
,2
]}

Alberto Estudillo-Wong, Luis ^{[4
]}

Tammeveski, Kaido ^{[1
]}

Alonso-Vante, Nicolas ^{[5
]}

机构：

[1] Univ Tartu, Inst Chem, Ravila 14a, EE-50411 Tartu, Estonia

[2] Univ Tartu, Inst Phys, W Ostwald Str 1, EE-50411 Tartu, Estonia

[3] Univ Tartu, Dept Geol, Ravila 14a, EE-50411 Tartu, Estonia

[4] Inst Politecn Nacl, CIIEMAD, Dept Soc & Polit Ambiental, Calle 30 Junio 1520, Cdmx 07340, Mexico

[5] Univ Poitiers, UMR CNRS 7285, IC2MP, 4 Rue Michel Brunet,B27 TSA 51106, F-86073 Poitiers 9, France

来源：

ELECTROCHIMICA ACTA | 2019年 / 316卷

关键词：

Electrocatalysis; Oxygen reduction reaction; Photo-deposition; Pt nanoparticles; Tin dioxide; DOPED TIN OXIDE; CATALYST SUPPORT; ELECTROCHEMICAL CHARACTERIZATION; CARBON; ACID; DURABILITY; STABILITY; CATHODES; SURFACE; TIO2;

D O I：

10.1016/j.electacta.2019.05.104

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Platinum nanoparticles (NPs) were photo-deposited on SnO2-C nanocomposites prepared by sol-gel method. Surface morphology of the prepared materials, examined by scanning electron microscopy (SEM) and transmission electron microscopy, confirmed selective deposition of Pt NPs on SnO2 nanoclusters formed on carbon surface. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) analysis, cyclic voltammetry (CV) and CO stripping experiments revealed modification of the electronic properties of the Pt NPs photo-deposited on the oxide-carbon composite in comparison to Pt/C prepared by the carbonyl chemical route. Rietveld refinement was employed to identify existing phases of catalysts and to determine the crystallite size. Micro-strain and intrinsic stacking fault increased and decreased, respectively, as a function of crystallite size. Pt loadings were determined by inductively coupled plasma mass spectrometry (ICP-MS). The oxygen reduction reaction (ORR) activity of the electrocatalysts was investigated in acid media using the rotating disk electrode (RDE) system. Accelerated durability test (ADT) results showed that photo-deposited Pt nanoparticles onto SnO2-C nanocomposite are more durable than those chemically deposited on carbon. (C) 2019 Elsevier Ltd. All rights reserved.

引用

页码：162 / 172

页数：11

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