TiO₂ Nanotubes/Ag/MoS₂ Meshy Photoelectrode with Excellent Photoelectrocatalytic Degradation Activity for Tetracycline Hydrochloride

Overview

Journal Nanomaterials (Basel)

Date 2018 Aug 29

PMID 30150575

Citations 7

Authors

Tingting Li

Zhuhong Wang

Chaochao Liu

Chunmin Tang

Xinkai Wang

Gongsheng Ding

Yichun Ding

Lixia Yang

Affiliations

Soon will be listed here.

Abstract

A novel type of TiO₂ nanotubes (NTs)/Ag/MoS₂ meshy photoelectrode was fabricated with highly oriented TiO₂ nanotube arrays grown from a Ti mesh supporting Ag nanoparticles and three-dimensional MoS₂ nanosheets. In this structure, Ag nanoparticles act as bridges to connect MoS₂ and TiO₂ and pathways for electron transfer, ensuring the abundant production of active electrons, which are the source of •O₂. The TiO₂ NTs/Ag/MoS₂ mesh can be used as both photocatalyst and electrode, exhibiting enhanced photoelectrocatalytic efficiency in degrading tetracycline hydrochloride under visible light irradiation (λ ≥ 420 nm). Compared to unmodified TiO₂ NTs, the improved photoelectrocatalytic activity of the TiO₂ NTs/Ag/MoS₂ arise from the formation of Z-scheme heterojunctions, which facilitate the efficient separation of photogenerated electron-hole pairs through the Schottky barriers at the interfaces of TiO₂ NTs⁻Ag and Ag⁻MoS₂.

Citing Articles

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