School of Material Science and Engineering, University of Jinan, Jinan 250022, China.
School of Material Science and Engineering, University of Jinan, Jinan 250022, China.
J Environ Sci (China). 2019 May;79:54-66. doi: 10.1016/j.jes.2018.10.011. Epub 2018 Oct 31.
Novel 3D biogenic C-doped BiMoO/InO-ZnO Z-scheme heterojunctions were synthesized for the first time, using cotton fiber as template. The as-prepared samples showed excellent adsorption and photodegradation performance toward the hazardous antibiotic doxycycline under simulated sunlight irradiation. The morphology, phase composition and in situ carbon doping could be precisely controlled by adjusting processing parameters. The carbon doping in BiMoO/InO-ZnO was derived from the cotton template, and the carbon content could be varied in the range 0.9-4.4 wt.% via controlling the heat treatment temperature. The sample with BiMoO/InO-ZnO molar ratio of 1:2 and carbon content of 1.1 wt.% exhibited the highest photocatalytic activity toward doxycycline degradation, which was 3.6 and 4.3 times higher than those of pure BiMoO and ZnInAl-CLDH (calcined layered double hydroxides), respectively. It is believed that the Z-scheme heterojunction with C-doping, the 3D hierarchically micro-meso-macro porous structure, as well as the high adsorption capacity, contributed significantly to the enhanced photocatalytic activity.
首次使用棉纤维作为模板，合成了新型的 3D 生物成因 C 掺杂 BiMoO/InO-ZnO Z 型异质结。在模拟太阳光照射下，所制备的样品对危险抗生素强力霉素表现出优异的吸附和光降解性能。通过调整工艺参数，可以精确控制形貌、相组成和原位碳掺杂。BiMoO/InO-ZnO 中的碳掺杂来源于棉模板，通过控制热处理温度，可以在 0.9-4.4 wt.%范围内改变碳含量。在摩尔比为 1:2 和碳含量为 1.1 wt.%的 BiMoO/InO-ZnO 样品中，对强力霉素的光催化降解活性最高，分别是纯 BiMoO 和 ZnInAl-CLDH（煅烧层状双氢氧化物）的 3.6 倍和 4.3 倍。据信，C 掺杂的 Z 型异质结、3D 分级微介宏观多孔结构以及高吸附能力，对增强的光催化活性有显著贡献。
