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

A mesoporous carbon and iron-carrying technology, applied in chemical instruments and methods, other chemical processes, alkali metal oxides/hydroxides, etc., can solve problems such as application limitations of nano-scale iron particles, and is suitable for large-scale production and application, wide application range, stable physical and chemical properties

Inactive Publication Date: 2013-09-18
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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.

Method used

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

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Embodiment

[0036] a kind of like figure 2 The magnetic iron-loaded ordered mesoporous carbon (Fe / CMK-3) of the present invention is shown, which uses ordered mesoporous carbon as a carrier, and the specific surface area of ​​ordered mesoporous carbon is as high as 679.4m 2 / g, magnetic nanoparticles are loaded on the carrier by nano-casting method, and magnetic nano-iron nanoparticles are embedded inside and outside the pores of ordered mesoporous carbon; the magnetic nanoparticles are mainly composed of zero-valent iron and iron oxides, and the iron The oxide contains ferric iron tetroxide and / or γ-ferric oxide, and the amount of iron in the magnetic nanoparticles is based on 1 mmol of iron per gram of mesoporous silicon template raw material in the hard template method. The magnetically loaded iron in this embodiment The pore size distribution of ordered mesoporous carbon is mainly concentrated at about 5nm, and at the same time, a new peak appears at about 3.8nm. The particle size o...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/28B01J20/30C02F1/28C02F1/62C02F101/22
Inventor 汤琳杨贵德曾光明黎思思庞娅章毅蔡叶张盛王佳佳周耀渝
Owner HUNAN UNIV
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