Stereo Assembly of Bimetallic PtPd on Ti3C2Tx/PProDOT for Efficient Methanol Oxidation Reaction in Both Acidic and Alkaline Media

IF 13 2区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Small Pub Date : 2025-03-19 DOI:10.1002/smll.202500402

Shuyue Xie, Tursun Abdiryim, Ruxangul Jamal, Guoliang Zhang, Xinsheng Tang, Yu Zhang, Yanyan Song, Nuramina Abdukirim

{"title":"Stereo Assembly of Bimetallic PtPd on Ti3C2Tx/PProDOT for Efficient Methanol Oxidation Reaction in Both Acidic and Alkaline Media","authors":"Shuyue Xie, Tursun Abdiryim, Ruxangul Jamal, Guoliang Zhang, Xinsheng Tang, Yu Zhang, Yanyan Song, Nuramina Abdukirim","doi":"10.1002/smll.202500402","DOIUrl":null,"url":null,"abstract":"The rational construction of efficient and stable electrocatalysts for methanol oxidation reaction (MOR) in acidic and alkaline media affects the commercialization of direct methanol fuel cells (DMFCs). Here, poly(3,4-propylenedioxythiophene) (PProDOT)-embedded Ti3C2Tx flakes for the growth of platinum and palladium bimetallic nanoparticles (PtPd) by a chemically reduced hydrothermal process are assembled. The constructed Ti3C2Tx/PProDOT/PtPd hybrids exhibit 3D-layered stereoscopic structures. After the embedding of PProDOT, the re-stacking of MXene flakes is suppressed and the interlayer spacing between flakes is extended, allowing the Ti3C2Tx/PProDOT interface to promote nanoparticle deposition, active site exposure, and charge transport. The electrochemical test outcomes reveal that the catalytic activity of Ti3C2Tx/PProDOT/PtPd for MOR far exceeds that of Ti3C2Tx/PtPd and Pt/C. In acidic electrolytes, the mass activity (MA) of Ti3C2Tx/PProDOT/PtPd is 2206.1 mA mg−1, which is 4.4 and 5.8 times higher than that of Ti3C2Tx/PtPd and Pt/C, respectively. In alkaline electrolytes, the MA of Ti3C2Tx/PProDOT/PtPd reaches 4180 mA mg−1, which is 2.1 and 4.8 times higher than that of Ti3C2Tx/PtPd and Pt/C, respectively. Meanwhile, its stability and CO tolerance improve significantly. Besides, Ti3C2Tx/PProDOT/PtPd also exhibits enhanced catalytic activity toward ethanol oxidation.","PeriodicalId":228,"journal":{"name":"Small","volume":"56 1","pages":""},"PeriodicalIF":13.0000,"publicationDate":"2025-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Small","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1002/smll.202500402","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The rational construction of efficient and stable electrocatalysts for methanol oxidation reaction (MOR) in acidic and alkaline media affects the commercialization of direct methanol fuel cells (DMFCs). Here, poly(3,4-propylenedioxythiophene) (PProDOT)-embedded Ti₃C₂T_x flakes for the growth of platinum and palladium bimetallic nanoparticles (PtPd) by a chemically reduced hydrothermal process are assembled. The constructed Ti₃C₂T_x/PProDOT/PtPd hybrids exhibit 3D-layered stereoscopic structures. After the embedding of PProDOT, the re-stacking of MXene flakes is suppressed and the interlayer spacing between flakes is extended, allowing the Ti₃C₂T_x/PProDOT interface to promote nanoparticle deposition, active site exposure, and charge transport. The electrochemical test outcomes reveal that the catalytic activity of Ti₃C₂T_x/PProDOT/PtPd for MOR far exceeds that of Ti₃C₂T_x/PtPd and Pt/C. In acidic electrolytes, the mass activity (MA) of Ti₃C₂T_x/PProDOT/PtPd is 2206.1 mA mg⁻¹, which is 4.4 and 5.8 times higher than that of Ti₃C₂T_x/PtPd and Pt/C, respectively. In alkaline electrolytes, the MA of Ti₃C₂T_x/PProDOT/PtPd reaches 4180 mA mg⁻¹, which is 2.1 and 4.8 times higher than that of Ti₃C₂T_x/PtPd and Pt/C, respectively. Meanwhile, its stability and CO tolerance improve significantly. Besides, Ti₃C₂T_x/PProDOT/PtPd also exhibits enhanced catalytic activity toward ethanol oxidation.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

Small 工程技术-材料科学：综合

CiteScore

17.70

自引率

3.80%

发文量

1830

审稿时长

2.1 months

期刊介绍： Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.