Magnetic carrier iron ordered mesoporous carbon, preparation method and application thereof

Abstract

The invention discloses a magnetic carrier iron ordered mesoporous carbon. The ordered mesoporous carbon is taken as a carrier, the carrier is prepared by a hard template method, and magnetic nanoparticles are loaded onto the carrier by a nano-joint casting method; the magnetic nanoparticles mainly consist of zero-valent iron and oxide of iron, wherein the proportion of the iron element is taken as 1-1.5m mol of each gram of a mesoporous silicon template, and the pore diameter distribution of the mesoporous carbon is mainly concentrated nearby 5nm and 3.8nm. A perpetration method of the magnetic carrier iron ordered mesoporous carbon provided by the invention comprises the following steps of: dissolving iron source materials and cane sugar in sulfuric acid, dipping the mesoporous silicon template, and adopting two-section type heat treatment; secondly, dipping by cane sugar-containing sulfuric acid solution, and adopting two-section type heat treatment; and finally carrying out constant-temperature high-temperature carbonization so as to obtain the silicon template in a demoulding way by hot NaOH solution, and drying to obtain the magnetic carrier iron ordered mesoporous carbon. The magnetic carrier iron ordered mesoporous carbon disclosed by the invention has the characteristics of being large in specific surface area and pore volume, wide in application range, stable in physicochemical property and the like, and the heavy metal hexavalent chromium ions in water body can be removed.

Description

technical field [0001] The invention relates to a mesoporous material and its preparation and application in the field of wastewater treatment, in particular to an iron-carrying ordered mesoporous carbon and its preparation and application in treating hexavalent chromium in water. Background technique [0002] Hexavalent chromium, a heavy metal element, widely exists in industrial wastewater such as alloys, steel manufacturing, and leather production. It is highly toxic, carcinogenic, and water-soluble. to human life and health. Therefore, the removal of hexavalent chromium in water has attracted widespread attention at home and abroad. [0003] At present, the methods for removing hexavalent chromium in water mainly include: ion exchange method, chemical precipitation method, redox method and adsorption method. Among them, redox method and adsorption method have attracted people's interest and attention because of their mature technology, fast and convenient operation, lo...

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Problems solved by technology

However, the application of nanoscale iron particles is limited due to the inherent agglomeration of nanoparticles and the easy oxidation of low-valent iron.

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