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Application of cadmium-doped ZnO for the solar photocatalytic degradation of phenol
Shahmoradi, Behzad1; Farahani, Farzaneh2; Kohzadi, Shadi1; Maleki, Afshin1; Pordel, Mohammadamin1; Zandsalimi, Yahya1; Gong, Yuxuan3; Yang, Jixiang4; McKay, Gordon5; Lee, Seung-Mok6
2019-01-15
摘要In this study, photocatalysis of phenol was studied using Cd-ZnO nanorods, which were synthesized by a hydrothermal method. The Cd-ZnO photocatalyst was characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy, and Fourier transform infrared (FT-IR) and UV-Vis spectroscopy. XRD patterns exhibit diffraction peaks indexed to the hexagonal wurtzite structures with the P63mc space group. SEM images showed that the average size of the Cd-ZnO nanorods was about 90 nm. Moreover, the nanorods were not agglomerated and were well-dispersed in the aqueous medium. FT-IR analysis confirmed that a surface modifier (n-butylamine) did not add any functional groups onto the Cd-ZnO nanorods. The dopant used in this study showed reduction of the bandgap energy between valence and conduction of the photocatalyst. In addition, effect of various operational parameters including type of photocatalyst, pH, initial concentration of phenol, amount of photocatalyst, and irradiation time on the photocatalytic degradation of phenol has been investigated. The highest phenol removal was achieved using 1% Cd-ZnO for 20 mg/l phenol at pH 7, 3 g/l photocatalyst, 120 min contact time, and 0.01 mole H2O2.
关键词Cd-ZnO hydrothermal nanorods phenol photocatalyst sunlight
DOI10.2166/wst.2019.061
发表期刊WATER SCIENCE AND TECHNOLOGY
ISSN0273-1223
卷号79期号:2页码:375-385
通讯作者Shahmoradi, Behzad(bshahmoradi@muk.ac.ir)
收录类别SCI
WOS记录号WOS:000461034100018
语种英语