Titanium dioxide nanometer composite material, and preparation methods and use thereof

A nanocomposite material and titanium dioxide technology, applied in chemical instruments and methods, other chemical processes, water/sludge/sewage treatment, etc., can solve problems such as loss, secondary pollution, reunion, etc., and achieve low cost and good adsorption effect , the effect of the simple method
CN104759261AActive Publication Date: 2015-07-08INST OF PROCESS ENG CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF PROCESS ENG CHINESE ACAD OF SCI
Publication Date
2015-07-08

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Abstract

The invention relates to a titanium dioxide (TiO2) nanometer composite material used for adsorbing heavy metals, and preparation methods and a use thereof. The preparation methods comprise a hydrolysis method, a hydrothermal method and a self assembling method. The composite material is prepared through loading nanometer TiO2 to micrometer polymer fibers or particles, and the above polymer has nanometer particle immobilizing, nanometer particle aggregation preventing and nanometer particle nucleation growth controlling effects, so the problems of agglomeration and loss of nanometer particles in the application process and secondary pollution due to the agglomeration and loss are solved. The obtained composite material has strong adsorption ability to heavy metal ions in water, and can be used in purification and treatment of heavy metals in industrial and domestic wastewater. The preparation methods have the advantages of simplicity, easy operation, green, cheap and easily available raw materials, and low cost; and the material prepared in the invention can be easily engineered to form a blocky material in order to form devices which can be used, so the material has a wide application prospect.
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Description

technical field

[0001] The invention relates to a titanium dioxide nanocomposite material and its preparation method and application, in particular to a green special titanium dioxide nanocomposite material for absorbing heavy metals, its preparation method and application. Background technique

[0002] With the rapid development of the economy, a large amount of industrial wastewater is discharged, heavy metal pollution accidents occur frequently, and clean water resources are becoming increasingly scarce, which seriously restricts the sustainable development of society. Lead, cadmium, and mercury are the most biotoxic elements among heavy metals. Because heavy metals can accumulate in organisms and pass through bioaccumulation and concentration in the food chain, they pose a serious threat to the ecological environment and human health. At present, the commonly used heavy metal wastewater treatment technologies mainly include chemical precipitation, ion exchange, membrane...

Claims

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