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A Facile Method for Preparation of Cu2O-TiO2 NTA Heterojunction with Visible-Photocatalytic Activity.

ABSTRACT: Based on highly ordered TiO2 nanotube arrays (NTAs), we successfully fabricated the Cu2O-TiO2 NTA heterojunction by a simple thermal decomposition process for the first time. The anodic TiO2 NTAs were functioned as both "nano-container" and "nano-reactors" to load and synthesize the narrow band Cu2O nanoparticles. The loaded Cu2O expanded absorption spectrum of the TiO2 NTAs from ultraviolent range to visible light range. We found that the Cu2O-TiO2 NTA heterojunction films had visible activity towards photocatalytic degrading methyl orange (MO). The photocatalytic abilities of the Cu2O-TiO2 NTA heterojunction films were found increased with the Cu2O content from 0.05 to 0.3 mol/L. This could be explained by more electron-hole pairs generated and less recombination, when the Cu2O-TiO2 heterojunction got formed. Here, we put forward this promising method, hoping it can facilitate the mass production and applications of Cu2O-TiO2 NTA heterojunction.

SUBMITTER: Liao Y 

PROVIDER: S-EPMC6057862 | biostudies-other | 2018 Jul

REPOSITORIES: biostudies-other

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A Facile Method for Preparation of Cu<sub>2</sub>O-TiO<sub>2</sub> NTA Heterojunction with Visible-Photocatalytic Activity.

Liao Yulong Y   Deng Peng P   Wang Xiaoyi X   Zhang Dainan D   Li Faming F   Yang Qinghui Q   Zhang Huaiwu H   Zhong Zhiyong Z  

Nanoscale research letters 20180724 1

Based on highly ordered TiO<sub>2</sub> nanotube arrays (NTAs), we successfully fabricated the Cu<sub>2</sub>O-TiO<sub>2</sub> NTA heterojunction by a simple thermal decomposition process for the first time. The anodic TiO<sub>2</sub> NTAs were functioned as both "nano-container" and "nano-reactors" to load and synthesize the narrow band Cu<sub>2</sub>O nanoparticles. The loaded Cu<sub>2</sub>O expanded absorption spectrum of the TiO<sub>2</sub> NTAs from ultraviolent range to visible light rang  ...[more]

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