TEMPO-oxidized bacterial cellulose nanofibers-supported gold nanoparticles with superior catalytic properties

Published Date
Carbohydrate Polymers
15 March 2017, Vol.160:34–42, doi:10.1016/j.carbpol.2016.12.020

• Author 

• Yan Chen
• Shiyan Chen ^,
• Baoxiu Wang
• Jingjing Yao
• Huaping Wang ^,

• State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, Key Laboratory of High Performance Fibers and Products (Ministry of Education), College of Materials Science and Engineering, Donghua University, Shanghai, 201620, PR China

Received 25 August 2016. Revised 7 December 2016. Accepted 7 December 2016. Available online 9 December 2016. 

Highlights

• •
  A novel nanohybrid was successfully fabricated by deposition of AuNPs onto TOBCNs.
• •
  The size and amount of AuNPs can be affected by TOBCNs concentration and pH value.
• •
  AuNPs/TOBCNs nanohybrids exhibited superior catalytic properties.

Abstract

A novel nanohybrid was successfully fabricated by deposition of gold nanoparticles (AuNPs) onto the surface of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized bacterial cellulose nanofibers (TOBCNs). The prepared AuNPs/TOBCNs nanohybrids were characterized by UV–vis spectral analysis, XRD, TEM and HRTEM. Their catalytic activity for the reduction of 4-nitrophenol (4-NP) to 4-aminophenol (4-AP) was estimated by UV–vis spectrometry. The results showed that the AuNPs/TOBCNs nanohybrids possessed AuNPs with an average diameter of 4.30 ± 0.97 nm exhibited superior catalytic properties for the reduction of 4-NP to 4-AP. The influences of the content of reducing agent and system temperature on the catalytic property were studied. Moreover, the turnover frequency of AuNPs/TOBCNs was 750 h⁻¹, which is higher than most recently reported AuNPs-based catalysts. This work reported a heterogeneous catalyst based on TOBCNs supported AuNPs with superior catalytic properties.

Keywords

Bacterial cellulose nanofibers

AuNPs

Nanohybrids

Catalytic properties

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  Corresponding authors.

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