Preparation method of ZIF-8@g-C3N4 catalyst with zeolite structure

A ZIF-8, g-c3n4 technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve the problem of low utilization of sunlight and visible light catalysts. The problem of poor catalytic effect, etc., achieves the effect of high carrier separation efficiency, easy large-scale production, and simple preparation method.
CN112090448APending Publication Date: 2020-12-18BAOSHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BAOSHAN IRON & STEEL CO LTD
Publication Date
2020-12-18

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Abstract

The invention discloses a preparation method of a ZIF-8@g-C3N4 catalyst with a zeolite structure. The preparation method comprises the following steps: uniformly grinding urea; transferring into an aluminum oxide crucible with a cover, roasting for 2-4h at 475-550 DEG C in an air atmosphere, and then cooling to room temperature to obtain layered g-C3N4; respectively weighing barbic acid, zinc nitrate, dimethylimidazole and g-C3N4, dispersing g-C3N4 into a methanol solution, carrying out ultrasonic treatment, adding barbic acid into a mixed solution, and uniformly stirring; dissolving zinc nitrate in the mixed solution, and continuously and uniformly stirring; meanwhile, dissolving dimethylimidazole into the methanol solution, and uniformly stirring; dropwise adding a dimethylimidazole solution into the mixed solution of g-C3N4, barbic acid and zinc nitrate under a stirring condition, stirring at room temperature, and standing; centrifuging, repeatedly washing with methanol and absoluteethyl alcohol, drying in vacuum, and grinding to obtain the ZIF-8@g-C3N4 composite catalyst material. The composite photocatalyst can be separated, recovered and recycled, the preparation method is simple, the controllability is high, and large-scale production is easy to realize.
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Description

technical field

[0001] The invention relates to the field of inorganic functional materials, and relates to a catalyst for degrading organic matter in wastewater, in particular to a method for preparing a zeolite structure catalyst ZIF-8@g-C3N4. Background technique

[0002] With the increasingly serious problem of eutrophication in water bodies and the increasingly stringent discharge standards of ammonia nitrogen and organic matter, advanced wastewater treatment technology has become a topic of widespread concern to scholars at home and abroad. Among them, the cold rolling units in the iron and steel industry are all involved in the pickling of strip steel. In order to realize the recycling of waste acid, acid regeneration units are designed and arranged. Most hydrochloric acid regeneration units are equipped with a silicon removal process, which will inevitably lead to excessive NH3-N in wastewater (NH3-N mainly comes from ammonia water in the silicon removal process) and...

Claims

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