纳米颗粒
材料科学
催化作用
纳米复合材料
化学工程
生物高聚物
金属
退火(玻璃)
纳米技术
聚合物
化学
复合材料
冶金
有机化学
工程类
作者
Haoqi Li,Jiaxin Xi,Adrienne G. Donaghue,Jong K. Keum,Yao Zhao,Ke An,Erica R. McKenzie,Fei Ren
标识
DOI:10.1038/s41598-020-67458-9
摘要
Abstract Polydopamine (PDA) is an emerging nature-inspired biopolymer material that possesses many interesting properties including self-assembly and universal adhesion. PDA is also able to form coordination bonds with various metal ions, which can be reduced to metal nanoparticles (NPs) as a result of thermal annealing under protective environment. In this study, PDA has been utilized as a support material to synthesize Pt NPs in an aqueous solution at room temperature. The catalytic performance of the resulting PDA-Pt nanocomposite was evaluated using an electrochemical workstation which showed comparable activity to Pt/C material for hydrogen evolution reaction (HER). Furthermore, Cu, Ni, and Cu–Ni NPs supported on PDA were also obtained using this strategy with assistance of subsequent thermal annealing. The phase evolution of the NPs was studied by in-situ X-ray diffraction while the morphology of the nanoparticles was investigated using electron microscopic techniques. Preliminary results showed the NPs supported on PDA also possessed HER activity. This work demonstrates that PDA can be utilized as a potential support for synthesis of metal NPs that can be exploited in engineering applications such as catalysts.
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