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Published in: Cellulose 6/2023

07-03-2023 | Original Research

Carboxymethyl cellulose/polyamidoamine hydrogel loaded with nano-Ag particles as recoverable efficient catalyst for reduction of 4-nitrophenol in water

Authors: Cuizhi Zhang, Kairu Gao, Xiaomeng Chu, Shaojie Liu, Peixin Li, Erjun Tang

Published in: Cellulose | Issue 6/2023

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Abstract

Polyamidoamine (PAMAM) encapsulated nano-Ag is a highly efficient catalyst for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) in water. However, PAMAM is easily soluble in water, making the nano-Ag catalyst difficult to recycle. In this work, carboxymethyl cellulose (CMC) was oxidized by sodium periodate to obtain oxidized carboxymethyl cellulose (CMC-CHO) containing aldehyde groups. PAMAM encapsulated nano-Ag (G4.0-PAMAM-Ag) was prepared with G4.0-PAMAM as template. Through the Schiff base reaction between CMC-CHO and G4.0-PAMAM-Ag, the CMC/PAMAM hydrogel loaded with nano-Ag (CMC-PAMAM-Ag) was prepared. The catalytic performance of CMC-PAMAM-Ag in the reduction of 4-NP to 4-AP in water was studied. It was found that its time required for accomplishing the reduction reaction was only 9 min, similar to that of free G4.0-PAMAM-Ag (8 min). Turnover frequency was as high as 169 h−1, much higher than that of the cellulose/PAMAM composite supported nano-Ag (4.2 h−1) and dextrann/PAMAM hydrogel supported nano-Ag (40.2 h−1). The recovered hydrogel was characterized by X-ray photoelectron spectroscopy and it was found that the imine bonds in the fresh hydrogel were reduced to the amine bonds in the recovered hydrogel, improving the stability of hydrogel. The recovered hydrogel still had a good catalytic performance.

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Literature
go back to reference Ai LH, Yue HT, Jiang J (2012) Environmentally friendly light-driven synthesis of Ag nanoparticles in situ grown on magnetically separable biohydrogels as highly active and recyclable catalysts for 4-nitrophenol reduction. J Mater Chem 22:23447–23453. https://doi.org/10.1039/c2jm35616cCrossRef Ai LH, Yue HT, Jiang J (2012) Environmentally friendly light-driven synthesis of Ag nanoparticles in situ grown on magnetically separable biohydrogels as highly active and recyclable catalysts for 4-nitrophenol reduction. J Mater Chem 22:23447–23453. https://​doi.​org/​10.​1039/​c2jm35616cCrossRef
go back to reference Singh S, Gundampati RK, Mitra K, Ramesh K, Jaganaddam MV, Misra N, Ray B (2015) Enhanced catalytic and antibacterial activities of silver nanoparticles immobilized on poly(N-vinyl pyrrolidone)-grafted graphene oxide. RSC Adv 5:81994–82004. https://doi.org/10.1039/C5RA13286JCrossRef Singh S, Gundampati RK, Mitra K, Ramesh K, Jaganaddam MV, Misra N, Ray B (2015) Enhanced catalytic and antibacterial activities of silver nanoparticles immobilized on poly(N-vinyl pyrrolidone)-grafted graphene oxide. RSC Adv 5:81994–82004. https://​doi.​org/​10.​1039/​C5RA13286JCrossRef
Metadata
Title
Carboxymethyl cellulose/polyamidoamine hydrogel loaded with nano-Ag particles as recoverable efficient catalyst for reduction of 4-nitrophenol in water
Authors
Cuizhi Zhang
Kairu Gao
Xiaomeng Chu
Shaojie Liu
Peixin Li
Erjun Tang
Publication date
07-03-2023
Publisher
Springer Netherlands
Published in
Cellulose / Issue 6/2023
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-023-05118-7

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