Silicate silver/flower-like magnalium hydroxide composites for enhanced visible light photodegradation activities

Yongyou Wang; Yaqiong Jing; Wenxue Li; Ming Yu; Xianquan Ao; Yan Xie; Qianlin Chen

doi:10.1039/c8ra01154k

Silicate silver/flower-like magnalium hydroxide composites for enhanced visible light photodegradation activities

RSC Adv. 2018 Jun 27;8(41):23442-23450. doi: 10.1039/c8ra01154k. eCollection 2018 Jun 21.

Authors

Yongyou Wang¹, Yaqiong Jing², Wenxue Li¹, Ming Yu¹, Xianquan Ao¹, Yan Xie¹, Qianlin Chen¹

Affiliations

¹ College of Chemistry and Chemical Engineering, Guizhou University Guiyang 550025 Guizhou China 41382823@qq.com.
² College of Materials Science and Engineering, Beijing University of Chemical Technology Beijing 100029 China.

Abstract

Flower-like magnalium layered composites (MgAl-LDH) were first fabricated by a hydrothermal method, and a series of AgSiO _x /MgAl-LDH composites with different mole ratios was successfully prepared by loading AgSiO _x on the MgAl-LDH surface. The photocatalytic activities of the composites for the degradation of methylene blue (MB) were investigated under visible light irradiation (xenon lamp). The prepared AgSiO _x /MgAl-LDH composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy, thermogravimetric analysis (TG), and X-ray photoelectron spectroscopy (XPS). The results revealed that AgSiO _x /MgAl-LDH (5 : 1) displayed a photocatalytic degradation efficiency of 99.7% in 30 min for MB. The photocatalytic degradation rate was higher than that of pure AgSiO _x .