Polydopamine Nanospheres-grafted-PDMAEMA Brushes/Au Composites as a Thermally Adjustable Catalyst for the Reduction of 4-Nitrophenol

In this work, a thermally adjustable catalyst was fabricated by immersing polydopamine (PDA) nanosphere grafted poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes in HAuCl4 solution. Au NPs could in-situ form without extra reducing agents due to the reducibility of PDA. The thermally respon...

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Bibliographic Details
Published in:Chemistry letters 2022-08, Vol.51 (8), p.811-814
Main Authors: Zhou, Yumeng, Wang, Wenqin
Format: Article
Language:English
Subjects:
Brushes
Catalysts
Chemical reduction
Nanospheres
Nitrophenol
Phase transitions
Reducing agents
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Summary:In this work, a thermally adjustable catalyst was fabricated by immersing polydopamine (PDA) nanosphere grafted poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) brushes in HAuCl4 solution. Au NPs could in-situ form without extra reducing agents due to the reducibility of PDA. The thermally responsive PDMAEMA brushes could control the reduction reaction rate of 4-nitrophenol by carrying out a phase transition to shield or expose Au NPs at different temperatures.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.220220