a magnetic tio 2 (r) Composite photocatalyst and preparation method thereof

A magnetic and composite material technology, applied in the field of magnetic TiO2 composite photocatalyst and its preparation, can solve the problems of difficult to obtain magnetic composite photocatalyst, poor degradation effect of pollutants in water, poor thermal stability of magnetic matrix, etc., and achieve simple separation and recovery Reuse, improve photocatalytic performance, and have the effect of magnetic response
CN110270332BActive Publication Date: 2021-06-01FUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
FUZHOU UNIV
Publication Date
2021-06-01

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Abstract

The invention discloses a magnetic TiO 2 (R) Composite materials and their preparation methods and applications. The magnetic composite photocatalyst consists of rutile phase TiO 2 (TiO 2 (R)) cladding gamma ‑Fe 2 o 3 / FeTiO 3 Surface, and a small amount of carbon (C) dispersed in the material. The preparation method includes firstly preparing MIL-88A by hydrothermal method, then coating polyacrylic acid (PAA) on its surface and compounding it with a titanium dioxide precursor, and finally calcining at high temperature under an inert atmosphere to obtain a magnetic composite photocatalyst. The magnetic composite photocatalyst of the present invention can be applied to the photocatalytic degradation of rhodamine B (RhB) wastewater, and has the advantages of unique morphology, uniform particle size, excellent magnetic recovery performance, stable photocatalytic performance and high degradation efficiency for RhB.
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Description

technical field

[0001] The invention belongs to the technical field of preparation of environmental photocatalytic materials, in particular to a magnetic TiO 2 (R) Composite photocatalyst and its preparation method and application. Background technique

[0002] TiO 2 It is the most widely studied and typical photocatalytic material, which has excellent photocatalytic degradation of organic matter under the condition of ultraviolet light irradiation, and has been widely used. Nano-TiO 2 Although the photocatalytic activity is good, but considering its poor separation and sedimentation performance, the researchers proposed to make TiO 2 Composite method with magnetic material to prepare magnetic TiO 2 Composite photocatalysts to realize simple separation and recycling of photocatalysts. Currently, the commonly reported magnetic TiO 2 The composite photocatalyst is mainly through the anatase phase TiO 2 (TiO 2 (A)) dispersed in Fe 3 o 4 or gamma -Fe 2 o 3 and other...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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