Influence of the Support and SnO2 Content on the Electrocatalytic Properties of PdSn/C Electrocatalysts for EOR in Alkaline Medium

被引：7
作者：
Leal da Silva, Elen [1 ,2 ]
Cuna, Andres [1 ]
Cadorin, Martina [2 ]
Marcuzzo, Jossano Saldanha [3 ,4 ]
Radtke, Claudio [5 ]
Baldan, Mauricio Ribeiro [3 ]
Rodrigues-Siqueli, Aline Castilho [3 ]
de Fraga Malfatti, Celia [2 ]
机构：
[1] Univ La Republ, Fac Quim, Area Fisicoquim, DETEMA, Ave Gen Flores 2124,CC 1157, Montevideo 11800, Uruguay
[2] Univ Fed Rio Grande do Sul, LAPECP PGE3M, Av Bento Goncalves,9500,Setor 4,Predio 75,Sala 23, BR-91501970 Porto Alegre, RS, Brazil
[3] Inst Nacl Pesquisas Espaciais, Lab Associado E Sensores Mat, BR-12245010 Sao Jose Dos Campos, SP, Brazil
[4] Inst Fed Sao Paulo, Campus Matao, Matao, SP, Brazil
[5] Univ Fed Rio Grande do Sul, Inst Quim, Av Bento Goncalves 9500, BR-91501970 Porto Alegre, RS, Brazil
来源：
WASTE AND BIOMASS VALORIZATION | 2022年 / 13卷 / 03期
关键词：
Alkaline direct ethanol fuel cells; PdSn catalyst; Biocarbon; Ethanol oxidation reaction; Spectroelectrochemical analysis; ETHANOL OXIDATION REACTION; TIME FTIR SPECTROSCOPY; PD/C NANOCATALYST; FORMIC-ACID; CARBON; ELECTROOXIDATION; PALLADIUM; CATALYSTS; METHANOL; NANOPARTICLES;
D O I：
10.1007/s12649-021-01604-w
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
An in-house synthesized activated biocarbon (aBC) and commercial Vulcan carbon (V) were studied as PdSn catalyst supports for the ethanol oxidation reaction (EOR) in an alkaline medium. The results obtained showed that the PdSn/V electrocatalyst presented much higher catalytic performance than the PdSn/aBC. These results can be associated with the fact that the catalyst particles in the PdSn/V electrocatalyst presented a higher SnO2 concentration compared to PdSn/aBC. The presence of SnO2 has an electronic effect that accelerates the adsorption of ethanol on the surface of Pd, thus enhancing the ethanol oxidation kinetics and contributing to a significant improvement in the PdSn/V catalytic activity. However, no significant differences were observed in the EOR mechanism. [GRAPHICS] .
引用
收藏
页码：1705 / 1716
页数：12
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