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Application of multi-walled carbon nanotube/Ce3+ doped TiO2 nanometer fibers in catalytic degradation of phenol

A technology of multi-walled carbon nanotubes and nanofibers, applied in water/sludge/sewage treatment, water/sewage treatment, chemical instruments and methods, etc., can solve the problems of low photon quantum yield and low utilization rate of visible light, and achieve The effect of good catalytic performance

Inactive Publication Date: 2016-08-17
NANTONG UNIVERSITY
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Problems solved by technology

[0002] At present, relevant research has successfully used titanium dioxide to photocatalyze phenol in wastewater, but there are still some scientific and technical problems in the actual use of titanium dioxide as a photocatalytic material, mainly focusing on two aspects: 1) TiO2 2 As a photocatalytic material, the light absorption wavelength range is limited, and the utilization rate of visible light is not high; 2) The light quantum yield is low

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  • Application of multi-walled carbon nanotube/Ce3+ doped TiO2 nanometer fibers in catalytic degradation of phenol
  • Application of multi-walled carbon nanotube/Ce3+ doped TiO2 nanometer fibers in catalytic degradation of phenol
  • Application of multi-walled carbon nanotube/Ce3+ doped TiO2 nanometer fibers in catalytic degradation of phenol

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Embodiment Construction

[0013] A multi-walled carbon nanotube / Ce 3+ doped TiO 2 The application of nanofibers in the catalytic degradation of phenol is characterized in that the molar concentration of multi-walled carbon nanotubes equivalent to Ti is 0.15:1, Ce 3+ The molar ratio relative to Ti is 0.05%, and the pH of the catalytic reaction is 4.

[0014] The MWCNT / Ce 3+ doped TiO 2 The nanofibers were prepared by the following steps: reflux the carbon nanotubes with 63% nitric acid for 2 h to purify them, then disperse a certain amount of purified carbon nanotubes in DMF solution, and carry out Ultrasonic treatment; then 2 g of polyacrylonitrile was placed in a vacuum oven for 2 h, and then dissolved in 25 ml of DMF solvent; then the mixed solution of multi-walled carbon nanotubes / DMF was added to PAN / DMF, stirred in vacuum, and sonicated for 10 h, and finally 25 ml of CNT / PAN spinning solution was obtained; then cerium nitrate was added to the mixed solution containing 2 ml of glacial acetic ac...

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Abstract

The invention discloses application of multi-walled carbon nanotube / Ce<3+> doped TiO2 nanometer fibers in catalytic degradation of phenol. The application is characterized in that the molar concentration of the multi-walled carbon nanotube to Ti is 0.15:1, the molar ratio of Ce<3+> to Ti is 0.05%, and the pH value of the catalytic reaction is equal to 4. The multi-walled carbon nanotube / Ce<3+> doped TiO2 nanometer fiber disclosed by the invention has good catalytic performance to phenol in water, and the catalytic efficiency is 99.86%.

Description

technical field [0001] The present invention relates to a kind of multi-walled carbon nanotube / Ce 3+ doped TiO 2 Application of nanofibers in the catalytic degradation of p-phenol. Background technique [0002] At present, related studies have successfully used titanium dioxide to photocatalyze phenol in wastewater, but there are still some scientific and technical problems in the actual use of titanium dioxide as a photocatalytic material, mainly focusing on two aspects: 1) TiO2 2 As a photocatalytic material, the light absorption wavelength range is limited, and the utilization rate of visible light is not high; 2) The photon quantum yield is low. Relevant studies have shown that TiO can be improved by doping modification. 2 The photocatalytic activity of the two-component or multi-component doped photocatalyst has higher catalytic activity than the previous single-component catalyst, which has gradually become a research hotspot in recent years. Rare earth metal ions ...

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Application Information

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IPC IPC(8): C02F1/30C02F1/72C02F101/34
CPCC02F1/30C02F1/725C02F2101/34C02F2305/10
Inventor 王芳芳张伟孙启龙张小丽
Owner NANTONG UNIVERSITY
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