Polysulfide modified PtCu intermetallic nanocatalyst with enrichment realizes efficient electrooxidation ethanol to CO2

被引：6
|
作者：
Zhou, Shuanglong [1 ]
Lv, Zheng [1 ]
Zhao, Liang [1 ]
Zhang, Dan [1 ]
Wang, Zuocao [1 ]
Dai, Yu [2 ]
Li, Bin [3 ]
Starostenko, Olga [4 ]
Lai, Jianping [1 ]
Wang, Lei [1 ,5 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Ecochem Engn, Lab Inorgan Synth & Appl Chem,Minist Educ,Taishan, Qingdao 266042, Peoples R China
[2] Qingdao City Univ, Coll Foreign Languages, Qingdao 266106, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Peoples R China
[4] Natl Acad Sci Ukraine, Inst Macromol Chem, UA-02160 Kiev, Ukraine
[5] Qingdao Univ Sci & Technol, Coll Environm & Safety Engn, Shandong Engn Res Ctr Marine Environm Corros & Sa, Qingdao 266042, Peoples R China
来源：
NANO RESEARCH | 2024年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Pt; CO2; selectivity; enrichment effect; ethanol oxidation reaction (EOR); electrocatalyst;
D O I：
10.1007/s12274-023-6043-x
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The main problem faced by ethanol oxidation reaction (EOR) includes low activity, poor selectivity, and durability. In the study, we found that polysulfide modified on the surface of PtCu intermetallic (IM)/C can simultaneously enrich hydroxyl and ethanol, which could effectively improve the catalytic activity, CO2 selectivity, and durability of catalyst. The mass activity and the specific activity of the product in 1 M KOH electrolyte reached 17.83 A.mg(Pt)(-1) and 24.67 mA.cm(-2). The CO2 selectivity of polysulfide modified product achieved 93.5%, which was 30 folds higher than Pt/C. In addition, the catalyst showed high catalytic stability. The mechanism study demonstrates that the surface modified polysulfide could significantly boost the enrichment effect of ethanol and hydroxyl species, accelerating C-C bond cleavage and CO oxidation.
引用
收藏
页码：2320 / 2327
页数：8
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