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Material Sciences 2024
BiOI/C-ZIF异质结光催化移除重金属Cr(VI)的性能研究
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Abstract:
运用常温搅拌法，制备BiOI催化剂，通过ZIF-8衍生制备法制备氮掺杂多孔碳C-ZIF。将BiOI与C-ZIF粉末通过冷冻干燥技术复合制备成有明显花状层级结构的BiOI/C-ZIF异质结光催化剂。BiOI/C-ZIF异质结光催化剂在模拟太阳光下可以去除水中Cr(VI)，当BiOI和C-ZIF的摩尔比为1:1%时，复合材料表现出最佳去除效果，120分钟去除率达到97.2%，是纯BiOI粉末的1.296倍。该研究为进一步探究冻干法制备异质结光催化剂移除水中其他污染物如抗生素、染料等，提供了新思路。
BiOI catalysts were prepared using a room-temperature stirring method, and nitrogen-doped porous carbon (C-ZIF) was synthesized via a ZIF-8-derived preparation approach. The BiOI and C-ZIF powders were combined using freeze-drying technology to fabricate a BiOI/C-ZIF heterojunction photocatalyst with a distinct flower-like hierarchical structure. The BiOI/C-ZIF heterojunction photocatalyst demonstrated the ability to remove Cr(VI) from water under simulated sunlight. When the molar ratio of BiOI to C-ZIF was 1:1%, the composite material exhibited optimal removal efficiency, achieving a removal rate of 97.2% within 120 minutes, which is 1.296 times higher than that of pure BiOI powder. This study offers new insights for further exploration of the potential of BiOI/C-ZIF heterojunction photocatalysts in removing other contaminants from water, such as antibiotics and dyes.
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