Multistage reaction center oxidation catalyst as well as preparation method and application thereof

Abstract

The invention provides a multistage reaction center oxidation catalyst. The catalyst comprises an activated carbon matrix, and metal colattice doped silicon dioxide particles which are adsorbed in gaps of the activated carbon matrix. By means of the adsorption function of the activated carbon and the microbattery function of the silicon dioxide particles, the catalyst, when being applied to the field of water treatment, achieves rapid degradation of pollutants, and a contact metal redox reaction is not generated in the system any more, so that the service life and the stability of the catalystare improved. The invention further provides a preparation method of the catalyst, a solvent method is adopted for preparing the metal colattice doped silicon dioxide particles, energy consumption islow, components are uniform, operation is easy, and wide application prospects are achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a multistage reaction center oxidation catalyst and its preparation method and application. Background technique [0002] Sewage from fertilizer, pesticide, papermaking, winemaking, printing and dyeing industries is very difficult to treat. All the treatment agents on the market currently have low pore volume and activity, high powder falling, secondary pollution to water, and short service life. , High cost accounting and other deficiencies. [0003] Micro-electrolysis technology is currently an ideal process for treating high-concentration organic wastewater, also known as internal electrolysis. It uses the micro-electrolytic material filled in the wastewater to generate a 1.2V potential difference to electrolyze the wastewater to degrade organic pollutants without electricity. When the system is filled with water, countless micro-battery systems will be formed in th...

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Problems solved by technology

[0010] In order to solve the above-mentioned technical problems, the present invention provides a multi-stage reaction center oxidation catalyst, which includes silicon dioxide particles doped with metal eutectic lattices adsorbed in the activated carbon matrix, which can replace the iron carbon in the prior art Catalyst, there is no problem such as passivation hardening and iron slime clogging. Among them, activated carbon can adsorb organic matter and other pollutants in the waste water to the gap or surface of activated carbon to improve the effect of catalytic oxidation; and silica particles are mixed with metal atoms. complex, so that the surface has obvious formation of electron-rich centers and electron-deficient centers to form a primary battery. The electron-rich centers undergo reductive reactions, while the electron-deficient centers undergo oxidative reactions. When combined with hydrogen peroxide to catalyze the degradation of pollutants, pollution can be achieved The rapid degradation of the compound can also improve the effective utilization rate of hydrogen peroxide; at the same time, the catalyst is prepared by the solvent method, which is easy to operate and the obtained catalyst composition is uniform. industrial application prospects

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