One-step synthesis of Cu/N co-doped TiO 2 nanocomposites with enhanced photocatalytic activities under visible-light irradiation

Micro & nano letters

article

Dayu Li¹  Zhongyang Liang¹  Wentao Zhang¹  Chao Zhang¹ 

[1] College of Mechanical Engineering, Yangzhou University

关键词: Structure of solid clusters;    nanoparticles;    nanotubes and nanostructured materials;    Microstructure;    Adsorption and desorption kinetics;    evaporation and condensation;    Low-dimensional structures: growth;    structure and nonelectronic properties;    Crystal growth from solution;    Photolysis and photodissociation by IR;    UV and visible radiation;    Heterogeneous catalysis at surfaces and other surface reactions;    Sorption and accommodation coefficients (surface chemistry);    Nanofabrication using crystal growth techniques;    Optical properties of composite materials (thin films;    low-dimensional and nanoscale structures);    Photocatalysis;    Structure of nanocomposites;   

DOI  :  10.1049/mna2.12075

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

In this research, a one-step hydrothermal method is used to prepare Cu-doped, N-doped and Cu/N co-doped titanium dioxide (TiO 2 ) composites, and the doping effects on the structures, absorption and photocatalytic performance are investigated. All the products are in anatase structure. The substitution of Cu atoms in TiO 2 and distribution of N in the crystal lattice have been identified by X-ray diffraction, which lead to the decrease of grain size. Hollow micro-nanospheres of Cu-TiO 2 samples, which make them have strong dark adsorption properties, can be observed. Cu/N co-doped samples exhibit the maximum light absorption in the visible light region, and a red-shift which is responsible for narrow band gap energy owing to the presence of N-atoms and Cu-atoms in the TiO 2 lattice. The synergistic effect of Cu and N results in the enhanced photocatalytic activity for degradation of methyl orange under visible light irradiation.

【 授权许可】

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