Polyelectrolyte brushes as efficient platform for synthesis of Cu and Pt bimetallic nanocrystals onto TiO2 nanowires |
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| Authors: | Yanbin Wang Qiong Su Qian Ye Feng Zhou Yu Zhang |
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| Institution: | 1. College of Chemical Engineering, Northwest Nationalities University, Lanzhou, China;2. Key Laboratory for Utility of Environmental Friendly Composite Materials and Biomass in University of Gansu Province, Lanzhou, China;3. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, China |
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| Abstract: | A Cu–Pt nanoparticle catalyst supported on TiO2 nanowires (NWs) was prepared through regenerative counterion exchange–reduction using polyelectrolyte brush as template. Cationic polydimethyl aminoethyl methacrylate brushes were grafted onto TiO2 NWs. Cu–Pt nanocrystals were produced by anionic counterions CuCl42? and PtCl62? bound with the polymer brush through in situ reduction with NaBH4 of high density and low polydispersity. The as‐prepared TiO2 NWs/polymer brush/Cu–Pt was characterized by Fourier transform infrared spectroscopy (FT‐IR spectrometry), X‐ray photoelectron spectroscopy, transmission electron microscopy, and UV–Vis adsorption spectrometry analyses. Results showed that the highly dispersed Cu and Pt nanoparticles were present on the surface of the TiO2 NWs/polymer brush. The resultant TiO2 NWs/polymer brush/Cu–Pt exhibited extremely high catalytic activity and reduced p‐nitrophenol at room temperature. Copyright © 2017 John Wiley & Sons, Ltd. |
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| Keywords: | polyelectrolyte brushes bimetallic nanocrystals TiO2 nanowires |
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