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

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.

SUBMITTER: Panomsuwan G 

PROVIDER: S-EPMC8978662 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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Au nanoparticle-decorated TiO<sub>2</sub> hollow fibers with enhanced visible-light photocatalytic activity toward dye degradation.

Panomsuwan Gasidit G   Wongcharoen Sittan S   Chokradcharoen Chayanapat C   Tipplook Mongkol M   Jongprateep Oratai O   Saito Nagahiro N  

RSC advances 20211220 1

TiO<sub>2</sub> 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 TiO<sub>2</sub> hollow fibers (Au/THF) have enhanced photocatalytic activity toward methylene blue degra  ...[more]

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