Development and application method of bismuth oxyhalide system material for processing organic pollutant efficiently

Abstract

The invention discloses a development and application method of a bismuth oxyhalide system material for processing organic pollutant efficiently. A novel semiconducting material which is low in synthesis cost, pollution-free and high in efficiency, and can use visible light to degrade organic pollutants can efficiently degrade pollutants in waste water, and fully mineralizes the pollutants into carbon dioxide and water, and accordingly no secondary pollutant is produced. Two aspects of synthesis technology and a material system are improved, wherein a low temperature precipitation method is adopted to synthesize a series of visible light catalysis degradation materials, and the system is mainly semiconducting materials doped with bismuth chloride oxide-I of a nanometer nuclear shell structure and compounded semiconducting materials of bismuth oxyiodide and bismuthyl bromide which are both of a slice sphere structure. The material system can be recycled and repeatedly used, and is still remarkable in degradation effect. The development and application method can be applied to printing and dyeing wastewater treatment, places materials on a fluidized bed or a fixed bed for lighting, and removes the organic pollutants with trace chemical oxygen demand and biochemical oxygen demand by deeply disposing. The bismuth oxyhalide system material can be widely applied to aspects of producing electron function materials, fire retardant, optical materials, medical composite materials, radiation proof materials and the like.

Description

technical field [0001] The invention relates to an application method in the field of material science, in particular to a development and application method for efficiently treating organic pollutants bismuth oxyhalide-based materials. Background technique [0002] At present, there are three major solutions for the treatment of printing and dyeing wastewater in China: physical and chemical methods, chemical methods, and biochemical methods. Among them, the photocatalytic oxidation of the physical and chemical treatment method is to use the synergistic oxidation of ultraviolet rays and oxidants to decompose organic matter in wastewater and purify wastewater. It can completely decompose various pollutants without forming intermediates. Almost all water Pollutants can be degraded through a heterogeneous catalytic process, and it has the advantages of low cost and safety. Therefore, many experts believe that photocatalytic oxidation will become one of the leading technologies ...

AI Technical Summary

Problems solved by technology

However, the utilization rate of TiO2 to sunlight is limited, and the photocatalytic degradation efficiency is not high.

Although TiO2 is a relatively mature photocatalytic material at this stage, its wide application is limited due to its limited utilization of visible light.