Fe-doped TiO2 nanotube photocatalyst, and preparation method and application thereof

A technology of photocatalysts and nanotubes, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve complex preparation processes and processes, small specific surface area, nanometer No secondary pollution, large specific surface area, and many adsorption sites can be achieved

Inactive Publication Date: 2015-03-11
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Commonly used nanotube TiO 2 Synthesis methods include template method, electrochemical method, etc. The inner diameter of the nanotubes obtained by the template method is generally large, the tube wall is thick, and the specific surface area is small, and the generated nanotubes are limited by the shape of the template, and the preparation process and process are complicated. ; Electrochemically generated TiO 2 The nanotubes are arranged in an orderly manner, but the tube diameter is large and the wall thickness

Method used

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  • Fe-doped TiO2 nanotube photocatalyst, and preparation method and application thereof
  • Fe-doped TiO2 nanotube photocatalyst, and preparation method and application thereof
  • Fe-doped TiO2 nanotube photocatalyst, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Weigh 1.0g P-25TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H 2 O, added to 16.0mL of 10mol / L NaOH solution, magnetically stirred for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, removed and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 550°C for 2h, and grind to obtain Fe-doped nanotube TiO with an atomic doping amount of 1%. 2 catalyst. The above P-25TiO 2 Powder was purchased from Degussa Corporation, New Jersey. The TiO 2 Powder specific surface area is 50m 2 / g, the average particle size is 21nm, anatase and rutile account for 80% and 20% of the total mass respectively.

[0034] Analysis of calcined Fe-doped nanotube TiO at 550°C using Rigaku Dmax-RB rotating anode diffractometer (X-ray diffraction, XRD) 2 Crystal phase (Cu Kα target, λ=0.1506nm); ( figure 1 ), the results show that t...

Embodiment 2

[0037] Weigh 1.0g P-25TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H2 O, added to 16.0mL of 10mol / L NaOH solution, magnetically stirred for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, removed and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 450°C for 2h, and grind to obtain Fe-doped nanotube TiO with an atomic doping amount of 1%. 2 catalyst. The above P-25TiO 2 Powder was purchased from Degussa Corporation, New Jersey. The TiO 2 Powder specific surface area is 50m 2 / g, the average particle size is 21nm, anatase and rutile account for 80% and 20% of the total mass respectively.

[0038] Analysis of calcined Fe-doped nanotube TiO at 450°C using Rigaku Dmax-RB rotating anode diffractometer (X-ray diffraction, XRD) 2 Crystal phase (Cu Kα target, λ=0.1506nm); ( figure 1 ), the results show that the...

Embodiment 3

[0041] Weigh 1.0g P-25TiO 2 powder and 0.0505g of Fe(NO 3 ) 3 9H 2 O, added to 16.0mL of 10mol / L NaOH solution, magnetically stirred for 0.5h, transferred to a polytetrafluoroethylene beaker, reacted at 105°C for 24h, removed and cooled to room temperature, washed with distilled water until neutral. Soak in 0.1mol / L hydrochloric acid for 0.5h, wash again until neutral, dry at 60°C, calcinate in a muffle furnace at 500°C for 2h, and grind to obtain Fe-doped nanotube TiO with an atomic doping amount of 1%. 2 catalyst. The above P-25TiO 2 Powder was purchased from Degussa Corporation, New Jersey. The TiO 2 Powder specific surface area is 50m 2 / g, the average particle size is 21nm, anatase and rutile account for 80% and 20% of the total mass respectively.

[0042] Analysis of calcined Fe-doped nanotube TiO at 500℃ using Rigaku Dmax-RB rotating anode diffractometer (X-ray diffraction, XRD) 2 Crystal phase (Cu Kα target, λ=0.1506nm); ( figure 1 ), the results show that th...

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Abstract

The invention discloses a preparation method of an Fe-doped TiO2 nanotube photocatalyst, which comprises the following steps: adding P-25 TiO2 powder and Fe(NO3)3.9H2O into an NaOH solution, magnetically stirring for 0.5 hour, transferring into a polytetrafluoroethylene beaker, reacting at 105 DEG C for 24 hours, taking out, cooling to room temperature, washing with distilled water to a neutral state, soaking in 0.1 mol / L hydrochloric acid for 0.5 hour, washing to a neutral state, drying at 60 DEG C, calcining in a muffle furnace at 500-550 DEG C for 2 hours, and grinding to obtain the Fe-doped TiO2 nanotube photocatalyst. The result proves that the 550 DEG C calcined Fe-doped nanotube TiO2 catalyst has favorable catalytic effect. The catalyst disclosed by the invention has the advantages of no toxicity, low price, strong corrosion resistance, large specific grain surface area, multiple adsorption sites and high removal rate for pollutants.

Description

technical field [0001] The invention belongs to the technical field of catalyst and water treatment, in particular to a Fe-doped nanotube TiO 2 Photocatalyst and its preparation method and use. Background technique [0002] In recent years, due to the massive discharge of industrial and agricultural wastewater and domestic sewage, the content of organic matter in lakes, reservoirs and other water bodies has increased, resulting in serious water pollution. Since July 1, 2007, the new "Drinking Water Hygienic Standard" has been implemented. This standard has strengthened the requirements for water quality organic matter, microorganisms and water quality disinfection, and the drinking water quality index has increased from 35 in the original standard to 106. item. The new standard clearly stipulates that drinking water must meet the following three basic requirements: ensure epidemiological safety; chemical substances and radioactive substances contained in water must not cau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/745C02F1/30C02F1/72C02F101/30C02F101/34
Inventor 李安定袁蓉芳周北海施春红花朵
Owner UNIV OF SCI & TECH BEIJING
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