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Method for preparing mesoporous material for adsorbing heavy metal ions and dye pollutants

A technology for adsorbing heavy metals and mesoporous materials, applied in the directions of alkali metal compounds, chemical instruments and methods, alkali metal oxides/hydroxides, etc. Simple, promising effects

Active Publication Date: 2015-04-01
HAIMEN ZHUOWEI TEXTILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the research and application of inorganic mesoporous silicon materials modified by hyperbranched polymers have not been reported so far.

Method used

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  • Method for preparing mesoporous material for adsorbing heavy metal ions and dye pollutants
  • Method for preparing mesoporous material for adsorbing heavy metal ions and dye pollutants
  • Method for preparing mesoporous material for adsorbing heavy metal ions and dye pollutants

Examples

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Embodiment 1

[0029] See attached figure 1 , is a schematic diagram of the process of preparing functionalized mesoporous silicon material in this example. First, cyano-modified mesoporous silicon was synthesized by co-condensation polymerization, and then carboxy-functionalized mesoporous silicon was obtained by carboxylation, and then amino-terminated hyperbranched polymers were grafted on the carboxyl-functionalized mesoporous silicon by the "grafting to" strategy, thereby A carboxylated mesoporous silicon / amino-terminated hyperbranched polymer hybrid material was obtained.

[0030] Concrete preparation steps are as follows:

[0031] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30°C, control the concentration of P123 to 14.50 g / L; add 2mol / L HCL solution , control the mass volume ratio (g / mL) of P123 and HCL solution to 1:35, stir until uniform, and obtain P123 acidic solution.

[0032] Add 2-cyanotriethox...

Embodiment 2

[0042] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30 °C, and control the concentration of P123 to 25.86 g / L. Then add 2mol / L HCL solution, control the mass volume ratio (g / mL) of P123 and HCL solution to 1:60, stir until uniform, and obtain P123 acidic solution.

[0043] Add 3-cyanotriethoxysilane (CETES) to the P123 acidic solution, control the mass ratio of CETES to P123 to 1:6.49, stir at 45°C at a speed of 600r / min for 30 min, and add orthosilicon drop by drop Acetate methyl ester (TMOS), control the mass ratio of TMOS and P123 to 1.54:1, and stir at 50°C at a speed of 600r / min for 12h to obtain a silica sol precursor.

[0044] Move the silica sol precursor to a reactor lined with tetrafluoroethylene for crystallization at 80°C for 36 hours, filter the resulting white precipitate, and dry it in vacuum at 80°C to obtain a white powder that is cyano-functionalized mesoporous silicon SBA -15 ...

Embodiment 3

[0049] Weigh quantitative polyethylene oxide-polypropylene oxide-polyethylene oxide (P123) into deionized water, stir and dissolve at 30 °C, and control the concentration of P123 to 7.86 g / L. Then add 2mol / L HCL solution, control the mass volume ratio (g / mL) of P123 and HCL solution to 1:40, stir until uniform, and obtain P123 acidic solution.

[0050] Add 2-cyanotriethoxysilane (CTES) to the P123 acidic solution, control the mass ratio of CTES to P123 to 1:7.70, stir at 60°C at a speed of 400r / min for 30 min, and add orthosilicon drop by drop Ethyl acetate (TEOS), the mass ratio of TEOS and P123 was controlled to be 2.65:1, stirred at a speed of 500r / min at 60°C for 8h to obtain a silica sol precursor.

[0051] Move the silica sol precursor to a reactor lined with tetrafluoroethylene for crystallization at 110°C for 12 hours, filter the resulting white precipitate, and dry it in vacuum at 80°C to obtain a white powder that is cyano-functionalized mesoporous silicon SBA -15 (...

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Abstract

The invention discloses a method for preparing a mesoporous material for adsorbing heavy metal ions and dye pollutants. The method comprises the following steps: synthesizing cyan-modified mesoporous silicon by using a copolycondensation method, carboxylating to obtain carboxyl functional mesoporous silicon, and grafting an amino-terminated hyperbranched polymer on the carboxyl functional mesoporous silicon by using a 'grafting to' strategy, thereby obtaining a carboxylated mesoporous silicon / amino group-terminated hyperbranched polymer hybrid material. The method for preparing the functional mesoporous material has the advantages of mild condition, simple process, relatively short production period, low product cost and can be put into large-scale industrial production easily. A product is high in adsorption property, can be used in fields such as heavy metal ions and organic wastewater treatment, and has wide application prospect.

Description

technical field [0001] The invention relates to a method for preparing a mesoporous material for absorbing heavy metal ions and dye pollutants, in particular to a method for preparing an amino-terminated hyperbranched polymer functionalized mesoporous silicon hybrid material, which belongs to the technical field of functional materials . Background technique [0002] Mesoporous materials are porous materials with a pore size between 2nm and 50nm. In 1992, Mobil Corporation of the United States used alkyl quaternary ammonium salt cationic surfactants as templates for the first time to synthesize mesoporous silica molecular sieves. Compared with general porous materials, its pore structure distribution is uniform, and its pore diameter and specific surface area are large, which has aroused interest in various fields. extensive attention. Since then, a large number of scholars have carried out extensive and in-depth research on mesoporous materials in the fields of synthesis ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30
CPCB01J20/262B01J20/28083B01J20/3085B01J2220/4812
Inventor 陶金陈宇岳熊佳庆林红
Owner HAIMEN ZHUOWEI TEXTILE CO LTD
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