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Carbon material loaded nano zero valence metal catalyst and preparation method and application thereof

A metal catalyst, nano-zero valence technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., to prevent agglomeration, remove fast and efficient, and improve stability. Effect

Active Publication Date: 2013-07-10
济南市供排水监测中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Although ordinary zero-valent metals have a good effect in removing pollutants, their reactivity or reducing ability needs to be further improved to achieve the purpose of efficient removal of pollutants.

Method used

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  • Carbon material loaded nano zero valence metal catalyst and preparation method and application thereof
  • Carbon material loaded nano zero valence metal catalyst and preparation method and application thereof
  • Carbon material loaded nano zero valence metal catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 18g KMnO 4 Add mixed solution concentrated H to 3g graphite powder 2 SO 4 / H 3 PO 4 (Concentrations of sulfuric acid and phosphoric acid are both ≥85%wt.) (360:40mL), heated to 50°C for 12 hours, then cooled to room temperature, added the solution to 400mL of ice-water mixture, and added 3mL of 30% H 2 o 2 The solution was stirred and reacted for 30 minutes, and finally the synthesized graphene oxide was washed and centrifuged and dried.

[0039]Take 3g of graphene oxide and ultrasonically disperse it in 200ml of water, add 30mg of FeCl 3 .6H 2 O, 25 0 C reacted at room temperature for 12 hours, centrifuged to separate the precipitate to remove unadsorbed Fe 3+ . Gained precipitation is redispersed in the chitosan solution that has 3mg again, adds 15mg ascorbic acid under the protection of nitrogen, 90 0 C was reacted for 3 hours, centrifuged, washed and dried to obtain a graphene-supported zero-valent iron nanocatalyst, and the obtained catalyst loading was...

Embodiment 2

[0041] 30mgFeCl 3 .6H 2 O and 3 mg of chitosan were dissolved in 200 ml of deionized water, and ascorbic acid was added under nitrogen protection, 90 0 C was reacted for 3 hours, centrifuged, washed and dried to obtain a non-supported zero-valent iron nanocatalyst.

Embodiment 3

[0043] to 21g KMnO 4 Add mixed solution H to 3g of graphite powder 2 SO 4 / H 3 PO 4 (400:40mL), heated to 80°C for 10h, then cooled to room temperature, added the solution to 480mL of ice-water mixture, and added 4.6mL of 30% H 2 o 2 The solution was stirred and reacted for 40 minutes, and finally the synthesized graphene oxide was washed and centrifuged and dried.

[0044] Take 3g of graphene oxide and ultrasonically disperse it in 200ml of water, add 30mg of CuSO 4 .5H 2 O, with 35 0 C was reacted for 8 hours, and the precipitate was separated by centrifugation to remove unadsorbed Cu 2+ . The resulting precipitate was redispersed in a sodium polyacrylate solution with 1 mg added, and added dropwise with a sodium borohydride solution (sodium borohydride and Cu 2+ The molar ratio is 1:2), react at room temperature for 6 hours, centrifuge, wash and dry to obtain a graphene-supported zero-valent copper nanocatalyst, and the obtained catalyst loading is 1%.

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Abstract

The invention discloses a carbon material loaded nano zero valence metal catalyst which comprises a nano zero valence metal and a carbon material, wherein the nano zero valence metal is uniformly dispersed in the carbon material; the loading quantity of the nano zero valence metal is 5-15mg / g; the nano zero valence metal is iron, copper, zinc or nickel; and the carbon material is a carbon nano tube, graphene or nano activated carbon. The invention further discloses the preparation and an allocation and application of the catalyst. The nano zero valence metal is loaded to the carbon material, so that the agglomeration of the zero valence metal is prevented, the stability of the catalyst is improved, and the specific surface area of the catalyst is remarkably increased; the catalyst is high efficient, cheap and stable in performance; a chlorine-containing organic pollutant can be rapidly and efficiently absorbed and enriched; and meanwhile the excellent electronic transmission capability of the nano carbon material can greatly accelerate the catalytic degradation speed of the pollutant, so that the pollutant can be more rapidly and effectively removed, so that the carbon material loaded nano zero valence metal catalyst is safe and economical.

Description

technical field [0001] The invention relates to a catalyst for removing chlorinated organic pollutants in drinking water, in particular to a carbon material-loaded nanometer zero-valent metal catalyst, a method for preparing the catalyst, and a method for using the catalyst to remove chlorinated organic pollutants in drinking water , belongs to the technical field of sewage treatment. technical background [0002] Drinking water is a basic need for human survival. Safe and reliable drinking water is directly related to the physical and mental health and quality of life of citizens. The current situation in China is that the hidden dangers of drinking water safety are increasing day by day, and the by-products of drinking water disinfection have received more and more attention. Standard chlorination treatment of drinking water can significantly reduce the diseases transmitted by drinking water, but during the process of chlorination disinfection, chlorine molecules will in...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J23/72B01J23/06B01J23/755C02F1/70C02F101/36
Inventor 贾瑞宝李贺姚振兴王明泉孙韶华
Owner 济南市供排水监测中心
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