期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 603, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.colsurfa.2020.125147
关键词
Photocatalysis; Copper (II) complex; Indole-3-acetic acid; Phytohormone
资金
- Key Laboratory for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education [KLESWFU-201909]
- Scientific Research Projects of Yunnan Provincial Education Department [2020J0397]
- Research Launch Fund of Southwest Forestry University [111921]
One-dimensional complex [Cu(tba)(2)(H2O)]center dot 2H(2)O (abbreviated as 1D-Cu, tba = 3-[1,2,4]triazol-1-yl-benzoic acid) micropowders were synthesized using the hydrothermal method, and further characterized by powder X-ray diffraction, elemental analysis, scanning electron microscopy (SEM), thermogravimetric analysis (TGA), Fourier-transform infrared (FT-IR) spectroscopy and UV-vis diffuse reflectance spectra. The photodegradation of methylene blue (MB) and indole-3-acetic acid (IAA) were studied under UV irradiation using 1D-Cu as catalysts in the presence of H2O2. The degradation efficiency of MB was up to 84.9 % after irradiating for 90 min under UV light, while the degradation efficiency of IAA was over 60.4 % after irradiating for 4 h. Reaction kinetics studies showed that both MB and IAA were in accordance with the pseudo-first-order reaction kinetics in the photodegradation process, and the t(1/2) for MB and IAA was 31.2 and 183.4 min, respectively. ET-IR and powder X-ray diffraction tests suggested that 1D-Cu catalyst exhibited excellent stability toward the photocatalytic reactions. Besides, the mechanism of photocatalytic reaction catalyzed by 1D-Cu was discussed, and the synergistic effect of 1D-Cu and H2O2 was also studied. This study provides a 1D-Cu/H2O2 catalytic system for the photocatalytic degradation of harmful organic dyes and phytohormones in water.
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