Zinc-rich Ga1-xZnxN1-xOx solid solutions with tunable composition prepared from a constant-pH coprecipitation method

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Hu, Yanling^1 ; Wei, Lihua^1 ; Zuo, Juan^1 ; Sun, Dongya^1 ; Jiang, Chunhai^1 ; Fu, Yongsheng^2

School of Materials Science and Engineering, Fujian Provincial Key Laboratory of Functional Materials and Applications, Xiamen University of Technology, Xiamen

361024, China^1

Key Laboratory for Soft Chemistry and Functional Materials, Nanjing University of Science and Technology, Ministry of Education, Nanjing

210094, China^2

关键词: Coprecipitation method;    Layered double hydroxides;    Photoactivity;    Photocatalytic activities;    Photodegradation of methylene blue;    Single phase;    Visible-light irradiation;    Water splitting;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012006/pdf
DOI  :  10.1088/1757-899X/207/1/012006

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Wurtzite Zinc-gallium oxynitrides (Ga1-xZnxN1-xOx) has attracted a great deal of interest these years as photocatalysts capable of overall water splitting and contamination degradation under visible light irradiation. Ga1-xZnxN1-xOxparticles were synthesized by nitridation of Zn/Ga/CO3layered double hydroxides (LDHs) using a coprecipitation method with constant pH of 8. Single-phase Ga1-xZnxN1-xOxwith Zn: Ga mole ratios of 2:1, 3:1, 4:1 and 5:1 were obtained, as characterized by X-ray diffraction and scanning electron microscope. Photocatalytic activities of the obtained particles were evaluated under visible-light irradiation against the photodegradation of methylene blue (MB). The oxynitrde with a Zn:Ga mole ratio of 2:1 showed the highest photoactivity among all the samples.