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

作者：Liao, Yulong^*; Deng, Peng; Wang, Xiaoyi; Zhang, Dainan; Li, Faming; Yang, Qinghui; Zhang, Huaiwu; Zhong, Zhiyong

来源：Nanoscale Research Letters, 2018, 13(1): 221.

DOI：10.1186/s11671-018-2637-8

• TiO2 nanotube
• Cu2O
• Heterojunction
• Thermal decomposition
• Visible photocatalysis

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 03 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.

• 出版日期2018-7-24
• 单位电子科技大学