Au nanoparticle-decorated TiO2 hollow fibers with enhanced visible-light photocatalytic activity toward dye degradation

Gasidit Panomsuwan; Sittan Wongcharoen; Chayanapat Chokradcharoen; Mongkol Tipplook; Oratai Jongprateep; Nagahiro Saito

doi:10.1039/D1RA07323K

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Au nanoparticle-decorated TiO₂ hollow fibers with enhanced visible-light photocatalytic activity toward dye degradation†

Gasidit Panomsuwan,

*^a Sittan Wongcharoen,^a Chayanapat Chokradcharoen,

^b Mongkol Tipplook,

^c Oratai Jongprateep

^a and Nagahiro Saito

Author affiliations

* Corresponding authors

^a Department of Materials Engineering, Faculty of Engineering, Kasetsart University, Bangkok 10900, Thailand
E-mail: gasidit.p@ku.ac.th

^b Department of Chemicals System Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-86-3, Japan

^c Research Initiative for Supra-Materials, Shinshu University, Nagano 380-8553, Japan

Abstract

TiO₂ hollow fibers (THF) were prepared by a template method using kapok as a biotemplate and subsequently decorated by plasmonic Au nanoparticles using a solution plasma process. The THF exhibited an anatase phase and a hollow structure with a mesoporous wall. Au nanoparticles with a diameter of about 5–10 nm were uniformly distributed on the THF surface. Au nanoparticles-decorated TiO₂ hollow fibers (Au/THF) have enhanced photocatalytic activity toward methylene blue degradation under visible light-emitting diode (Vis-LED) as compared to pristine THF and P25. This could be attributed to combined effects including effective light-harvesting by a hollow structure, large surface area due to a mesoporous wall of THF, and visible-light absorption and efficient charge separation induced by Au nanoparticles. The Au/THF also showed good recyclability and separation ability.

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Article information

DOI: https://doi.org/10.1039/D1RA07323K
Article type: Paper
Submitted: 01 Oct 2021
Accepted: 12 Dec 2021
First published: 20 Dec 2021
This article is Open Access

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RSC Adv., 2022,12, 193-200

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Au nanoparticle-decorated TiO₂ hollow fibers with enhanced visible-light photocatalytic activity toward dye degradation

G. Panomsuwan, S. Wongcharoen, C. Chokradcharoen, M. Tipplook, O. Jongprateep and N. Saito, RSC Adv., 2022, 12, 193 DOI: 10.1039/D1RA07323K

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