Key Laboratory of Environmental Engineering of Shaanxi Province, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Key Laboratory of Northwest Water Resources, Environment and Ecology, Ministry of Education, Xi'an 710055, China.
Key Laboratory of Environmental Engineering of Shaanxi Province, School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
J Environ Manage. 2019 Jul 1;241:131-137. doi: 10.1016/j.jenvman.2019.03.132. Epub 2019 Apr 13.
An interesting ZnInS/TiO composite catalyst was prepared by a hydrothermal method and thoroughly characterized. The photocatalytic degradation of trace carbamazepine (CBZ) in two river waters was primarily investigated through a batch experiment under solar irradiation, and the effects of dissolved organic matter (DOM), inorganic salt (IS), suspended solids (SS) and ultraviolet (UV) on CBZ degradation were researched. The influential degree was DOM ≈ IS » SS and CBZ with an initial concentration of 100 μg/L in the Bahe River water was completely degraded under a catalyst dosage of 75 mg/L and solar irradiation of 240 min. Compared with direct photolysis, the reaction rate constant enhanced 45 times and the half-life reduced to 1/82 in photocatalysis after the removal of all SS, IS and DOM. A certain adsorption capacity of composite catalyst with a specific surface area of 91.9 m/g and a strong interaction between TiO and ZnInS effectively improved the photocatalytic degradation of CBZ. The increase of light intensity was confirmed to be of benefit to CBZ photocatalysis. Most of CBZ was degraded by visible light and UV effect was negligible. Although photo-etching and acidic corrosion by course products had negative effect on ZnInS/TiO, the removal of CBZ was mainly kept at 86% after five times usage of the catalyst.
采用水热法制备了一种有趣的 ZnInS/TiO 复合材料催化剂，并对其进行了深入的表征。通过在太阳辐射下进行批实验，主要研究了该光催化剂在两种河水中痕量卡马西平（CBZ）的光降解情况，并研究了溶解有机物（DOM）、无机盐（IS）、悬浮固体（SS）和紫外线（UV）对 CBZ 降解的影响。影响程度为 DOM≈IS»SS，并且在催化剂用量为 75mg/L 和太阳辐射 240min 的条件下，初始浓度为 100μg/L 的巴河水中的 CBZ 完全降解。与直接光解相比，在去除所有 SS、IS 和 DOM 后，光催化的反应速率常数提高了 45 倍，半衰期缩短至 1/82。具有 91.9m/g 比表面积和 TiO 与 ZnInS 之间强相互作用的复合催化剂具有一定的吸附能力，有效提高了 CBZ 的光催化降解性能。增加光强被证实有利于 CBZ 的光催化。大部分 CBZ 是通过可见光降解的，UV 效应可以忽略不计。尽管光腐蚀和副产物的酸性腐蚀对 ZnInS/TiO 有负面影响，但在催化剂使用五次后，CBZ 的去除率仍保持在 86%左右。
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