Hollow spherical bismuth oxide supported ordered mesoporous carbon as well as preparation method and application thereof

Abstract

The invention discloses a hollow spherical bismuth oxide supported ordered mesoporous carbon as well as a preparation method and application thereof. According to the hollow spherical bismuth oxide supported ordered mesoporous carbon, ordered mesoporous carbon serves as a carrier, and hollow spherical bismuth oxide is supported on the surface of the ordered mesoporous carbon. The preparation method comprises the steps: preparing ordered mesoporous carbon on the surface of which bismuth oxide is supported and calcining the ordered mesoporous carbon on the surface of which bismuth oxide is supported. The hollow spherical bismuth oxide supported ordered mesoporous carbon disclosed by the invention has the advantages of being large in specific surface area, neat and ordered in pore diameter, excellent in dispersion property, high in thermal stability, high in conductivity and the like, the preparation method has the advantages of being simple in preparation process, low in cost and the like, the ordered mesoporous carbon serving as a functional nanometer material can be used for detecting and treating environmental pollutants, and the prepared electrochemical sensor is capable of realizing detection of the environmental pollutants and has the advantages of being high in stability, long in service life, wide in detection range, low in detection limit, excellent in interference resistance and the like.

Description

technical field [0001] The invention belongs to the technical field of materials, and relates to a functional nanometer material used for detecting and treating environmental pollutants, in particular to an ordered mesoporous carbon loaded with hollow spherical bismuth oxide and its preparation method and application. Background technique [0002] With the rapid development of social economy, the pollution of environmental water, especially the pollution of sediment and wetland in water has become a serious environmental pollution problem worldwide. The discharge of wastewater from agricultural production, petrochemical industry, etc., and the random discharge of human sewage are important causes of environmental water pollution. A large number of heavy metal pollutants contained in it have mutagenic, carcinogenic and teratogenic effects. At the same time, a large amount of organic matter will also Consume dissolved oxygen in the water body, thereby causing damage to the aqu...

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Problems solved by technology

However, the existing bismuth-based electrode synthesis methods are mainly divided into in-situ / ex-situ deposition of bismuth-containing nanoparticle film on the electrode surface and pre-deposition of bismuth-containing nanoparticle material on the electrode surface. However, the sensitivity of the prepared working electrode is low, which is not suitable for large-scale preparation of portable sensors, and the main disadvantage of in-situ / ex-situ deposition of bismuth-containing nanoparticle films on the electrode surface is that the concentration of bismuth salt solution needs to be reasonably controlled to Prevents bismuth ion hydrolysis and complex formation

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