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Updated: May 19, 2026

Synthesis of Platinum-nickel Nanowires and Optimization for Oxygen Reduction Performance
Published on: April 27, 2018
Synergistic Enhancement of Hydrogen Evolution Performance via Nitrogen-Doped Carbon and Titanium Oxide Modification
Yanyan Xi1, Xiaofan Liu2, Hua Chi2
1Advanced Chemical Engineering and Energy Materials Research Center, China University of Petroleum (East China), Qingdao 266580, P. R. China.
Abstract:
Hydrogen production through water electrolysis, as a green pathway for hydrogen generation, is poised to become a core component of a future hydrogen energy supply system. The development of catalyst materials capable of reducing the reaction energy barrier is crucial for improving the performance of water electrolysis. In this study, nitrogen (N) doping into a carbon support was achieved via a melamine cothermal method, and a series of Pt/TiO2@CN catalysts were synthesized. Their hydrogen evolution performance was systematically evaluated. Among them, Pt/TiO2@CN-2 exhibited the optimal hydrogen evolution reaction (HER) activity, with an overpotential as low as 46 mV and a Tafel slope of 79 mV·dec-1. Characterization results revealed that Platinum (Pt) is uniformly distributed on the catalyst surface, and the introduction of modification layer increases the catalyst's surface area. Electron transfer between Pt and TiO2 induces a positive shift in the Eg mode of the Ti-O bond in the Raman spectrum. Additionally, cothermal treatment with melamine increased the structural defects of carbon atoms in the support.
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