Branch-Regulated Palladium-Antimony Nanoparticles Boost Ethanol Electro-oxidation to Acetate

被引：16

作者：

Wang, Qiuxia ^{[1
]}

Liu, Junfeng ^{[1
]}

Zhang, Wei ^{[1
]}

Li, Tong ^{[1
]}

Wang, Yong ^{[1
]}

Li, Huaming ^{[1
]}

Cabot, Andreu ^{[2
]}

机构：

[1] Jiangsu Univ, Inst Energy Res, Sch Chem & Chem Engn, Zhenjiang 212013, Jiangsu, Peoples R China

[2] Catalonia Inst Energy Res IREC, Barcelona 08930, Spain

来源：

INORGANIC CHEMISTRY | 2022年 / 61卷 / 16期

基金：

中国国家自然科学基金;

关键词：

OXIDATION REACTION; ALKALINE; ELECTROCATALYSTS; TEMPERATURE; PERFORMANCE; MECHANISMS; EVOLUTION; ALCOHOLS; GROWTH;

D O I：

10.1021/acs.inorgchem.2c00820

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Tuning the composition and morphology of bimetallic nanoparticles (NPs)offers an effective strategy to improve their electrocatalytic performance. In this work, we present a facile wet-chemistry procedure to engineer PdSb NPs with controlled morphology.Spherical or branched NPs are produced by tuning the heterogeneous nucleation of Sb on Pdseeds. Compared with pure Pd NPs, the incorporation of Sb not only decreases the amount ofPd used but also results in a significant increase of activity and stability for the electrocatalyticethanol oxidation reaction (EOR). Best performances are obtained with highly branched PdSbNPs, which deliver a specific activity of 109 mA cm-2and a mass activity of up to 2.42 AmgPd-1, well above that of a commercial Pd/C catalyst and branched Pd NPs. Moreover, PdSbdisplays significant stability enhancement of over 10 h for the EOR measurements. Densityfunctional theory calculations reveal that the improved performance of PdSb NPs is related tothe role played by Sb in reducing the energy barrier of the EOR rate-limiting step. Interestingly, as a side and value-added product ofthe EOR, acetate is obtained with 100% selectivity on PdSb catalysts

引用

页码：6337 / 6346

页数：10

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