Electrostatically confined Bi/Ti3C2Tx on a sponge as an easily recyclable and durable catalyst for the reductive transformation of nitroarenes

Developing novel catalysts with both easily accessible recyclability and long-term durability toward chemical synthesis is highly desirable yet remains to be explored. In this work, a porous and bulk sponge-confined bismuth (Bi)/Ti3C2Tx (MXene) composite as a monolithic catalyst is synthesized via t...

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Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2021-09, Vol.9 (35), p.19847-19853
Main Authors: Yu, Changqiang, Peng, Linfen, Zhu, Yisong, Xie, Guanshun, Wu, Zhenjun, Xie, Xiuqiang, Zhang, Nan
Format: Article
Language:English
Subjects:
Bismuth
Catalysts
Chemical synthesis
Durability
Electrostatic properties
Graphene
Nanoparticles
Porous materials
Recyclability
Self-assembly
Substrates
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Summary:Developing novel catalysts with both easily accessible recyclability and long-term durability toward chemical synthesis is highly desirable yet remains to be explored. In this work, a porous and bulk sponge-confined bismuth (Bi)/Ti3C2Tx (MXene) composite as a monolithic catalyst is synthesized via the photodeposition of Bi nanoparticles with a mean size of 4.4 nm on Ti3C2Tx followed by electrostatic self-assembly between the negatively charged Bi/Ti3C2Tx and positively charged sponge. It is noteworthy that compared to the analogue of widely investigated reduced graphene oxide, Ti3C2Tx with favorable hydrophilic surface groups as the scaffold for the high dispersion of Bi nanoparticles benefits not only efficient aqueous phase catalytic reactions, but also strong electrostatic interaction with the sponge substrate for ensuring the recyclability towards practical applications. As a result, the bulk sponge-confined Bi/Ti3C2Tx as an easily recyclable catalyst possesses both improved catalytic performance and long-term durability for the hydrogenation of nitroarenes in the aqueous phase. This study presents a facile and valuable protocol for functionalizing inexpensively available porous bulk materials to confine catalysts towards integrated materials featuring easy-separation and long-term stability for practical catalytic processes.
ISSN:2050-7488
2050-7496
DOI:10.1039/d1ta02736k