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Here, poly(3,4\u2010propylenedioxythiophene) (PProDOT)\u2010embedded Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub> flakes for the growth of platinum and palladium bimetallic nanoparticles (PtPd) by a chemically reduced hydrothermal process are assembled. The constructed Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT\/PtPd hybrids exhibit 3D\u2010layered stereoscopic structures. After the embedding of PProDOT, the re\u2010stacking of MXene flakes is suppressed and the interlayer spacing between flakes is extended, allowing the Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT interface to promote nanoparticle deposition, active site exposure, and charge transport. The electrochemical test outcomes reveal that the catalytic activity of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT\/PtPd for MOR far exceeds that of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PtPd and Pt\/C. In acidic electrolytes, the mass activity (MA) of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT\/PtPd is 2206.1\u00a0mA mg<jats:sup>\u22121<\/jats:sup>, which is 4.4 and 5.8 times higher than that of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PtPd and Pt\/C, respectively. In alkaline electrolytes, the MA of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT\/PtPd reaches 4180\u00a0mA mg<jats:sup>\u22121<\/jats:sup>, which is 2.1 and 4.8 times higher than that of Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PtPd and Pt\/C, respectively. Meanwhile, its stability and CO tolerance improve significantly. Besides, Ti<jats:sub>3<\/jats:sub>C<jats:sub>2<\/jats:sub>T<jats:sub>x<\/jats:sub>\/PProDOT\/PtPd also exhibits enhanced catalytic activity toward ethanol oxidation.<\/jats:p>","DOI":"10.1002\/smll.202500402","type":"journal-article","created":{"date-parts":[[2025,3,19]],"date-time":"2025-03-19T04:03:31Z","timestamp":1742357011000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Stereo Assembly of Bimetallic PtPd on Ti<sub>3<\/sub>C<sub>2<\/sub>T<sub>x<\/sub>\/PProDOT for Efficient Methanol Oxidation Reaction in Both Acidic and Alkaline Media"],"prefix":"10.1002","volume":"21","author":[{"given":"Shuyue","family":"Xie","sequence":"first","affiliation":[{"name":"State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources College of Chemistry Xinjiang University  Urumqi 830017 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