Facile synthesis of α-Ag3VO4 hollow nanospheres with improved photocatalytic activities

作者：Zhao, Xiaoxiao; Huang, Jianfeng^*; Feng, Liangliang^*; Cao, Liyun; Li, Jiayin; Zhou, Lei

来源：Journal of Alloys and Compounds, 2017, 718: 7-14.

DOI：10.1016/j.jallcom.2017.05.107

• alpha-Ag3VO4
• Hollow structure
• pH-dependent
• Photocatalytic activity

The development of efficient photocatalysts is of paramount significance for sustainable availability of solar energy. Herein, hollow alpha-Ag3VO4 photocatalysis crystallites were successfully synthesized via a facile one-pot hydrothermal approach without modifier. The morphology, phase composition and crystal structure of alpha-Ag3VO4 crystallites are strongly dependent on the pH values of the precursor solution, and the formation of hollow alpha-Ag3VO4 nanospheres merely occurs at pH = 10. Furthermore, hollow alpha-Ag3VO4 nanospheres exhibit superior photocatalytic activities compared with bulk alpha-Ag3VO4 for the degradation of Rhodamine B (Rh B) under the simulated solar light, achieving up to 97% degradation in 2 h irradiation. This improved photocatalytic performance of hollow alpha-Ag3VO4 nanospheres is primarily attributed to the synergistic effect of the improved electron-transfer efficiency, the extended light absorption range and effective separation of electron-hole pairs.

• 出版日期2017-9-25
• 单位陕西科技大学