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Iron ion and TiO2 supported powdery active carbon composite photocatalyst and preparation method thereof

A technology of powder activated carbon and composite light, applied in the direction of light water/sewage treatment, etc., can solve the problems of restricting the photocatalytic efficiency of composite catalysts, insufficient microporous structure, limited active sites, etc., to extend the light response range, improve Photocatalytic efficiency, simple operation effect

Inactive Publication Date: 2015-08-19
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to problems such as large particles, uneven particle size, limited active sites, and insufficient microporous structure of activated carbon, the photocatalytic efficiency of the composite catalyst is also restricted. At present, no metal-doped doped carbon has been found in the prior art. Application of Iron / TiO2 Particles as Catalyst for Degradation of Odor Dimethylisoborneol in Water

Method used

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  • Iron ion and TiO2 supported powdery active carbon composite photocatalyst and preparation method thereof
  • Iron ion and TiO2 supported powdery active carbon composite photocatalyst and preparation method thereof
  • Iron ion and TiO2 supported powdery active carbon composite photocatalyst and preparation method thereof

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Effect test

Embodiment 1

[0037] A loaded iron ion and TiO 2 The powdered activated carbon composite photocatalyst is prepared by a method comprising the following steps:

[0038] (1) Pretreatment of powdered activated carbon:

[0039] Add powdered activated carbon with a particle size of 28-38 μm to a 10% hydrochloric acid aqueous solution by mass, stir for 30 minutes, let it soak for 48 hours, then filter with suction, and wash the obtained filter cake with deionized water until the effluent is neutral , and then control the temperature at 80°C for 4 hours in vacuum, pulverize, pass through a 400-mesh sieve, and seal the part under the sieve for use;

[0040] (2) At room temperature, mix 10ml of tetrabutyl titanate, 40ml of absolute ethanol and 6.6ml of glacial acetic acid evenly, then adjust the pH to 2 with concentrated hydrochloric acid, then magnetically stir for 30min, and then sonicate for 20min to obtain solution A;

[0041] The consumption of the above-mentioned tetrabutyl titanate, absolut...

Embodiment 2

[0053] A loaded iron ion and TiO 2 The powdered activated carbon composite photocatalyst is prepared by a method comprising the following steps:

[0054] (1) Pretreatment of powdered activated carbon:

[0055] Add powdered activated carbon with a particle size of 28-38 μm to a 10% hydrochloric acid aqueous solution by mass, stir for 30 minutes, let it soak for 52 hours, then suction filter, and wash the obtained filter cake with deionized water until the effluent is neutral , and then control the temperature at 100°C for 7 hours in vacuum, pulverize, pass through a 400-mesh sieve, and seal the part under the sieve for use;

[0056] (2) At room temperature, mix 10ml of tetrabutyl titanate, 40ml of absolute ethanol and 6.6ml of glacial acetic acid evenly, then adjust the pH to 2 with concentrated hydrochloric acid, then magnetically stir for 30min, and then sonicate for 20min to obtain solution A;

[0057] The consumption of the above-mentioned tetrabutyl titanate, absolute et...

Embodiment 3

[0066] A loaded iron ion and TiO 2 The powdered activated carbon composite photocatalyst is prepared by a method comprising the following steps:

[0067] (1) Pretreatment of powdered activated carbon:

[0068] That is, firstly, powdered activated carbon with a particle size of 28-38 μm is added to a hydrochloric acid aqueous solution with a concentration of 10% by mass and stirred for 30 minutes, then left to soak for 56 hours, then suction filtered, and the obtained filter cake is washed with deionized water until the effluent is Neutral, then control the temperature at 110°C and vacuum dry for 6 hours, pulverize, pass through a 500-mesh sieve, and seal the part under the sieve for use;

[0069] (2) At room temperature, mix 10ml of tetrabutyl titanate, 40ml of absolute ethanol and 6.6ml of glacial acetic acid evenly, then adjust the pH to 3 with concentrated hydrochloric acid, then magnetically stir for 30min, and then sonicate for 10min to obtain solution A;

[0070] The c...

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Abstract

The invention discloses an iron ion and TiO2 supported powdery active carbon composite photocatalyst and a preparation method thereof. The method comprises the following steps: uniformly mixing tetrabutyl titanate, anhydrous ethanol and glacial acetic acid at room temperature, adjusting the pH value to 2-3, stirring, and carrying out ultrasonic treatment to obtain a solution A; mixing anhydrous ethanol with deionized water to obtain a solution B, adding Fe(NO3).9H2O and TiO2 into the solution B, stirring for dissolving to obtain a solution C, adding the solution C to the solution A, stirring, carrying out ultrasonic treatment to obtain iron doped TiO2 sol, adding pretreated powdery active carbon passing through a 400-500 mesh sieve into the iron doped TiO2 sol, stirring, carrying out ultrasonic treatment, standing for ageing, drying, grinding, carrying out atmosphere heat treatment at 300DEG C for 2-3h, carrying out heat treatment at 500DEG C under air isolation conditions for 2-3h, and cooling in a furnace to obtain the iron ion and TiO2 supported powdery active carbon composite photocatalyst. The composite photocatalyst has the advantages of low cost and high catalysis efficiency.

Description

technical field [0001] The invention relates to a loaded iron ion and TiO 2 Powdered activated carbon composite photocatalyst and preparation method thereof. Background technique [0002] At present, most of the treatment processes for dimethyl isoborneol in drinking water in water plants are traditional processes, including aeration, coagulation, sedimentation, sand filtration, etc. Researchers have conducted a large number of small tests on traditional processes, ( Lalezary S., Pirbazari M., McGuire M.J. and Krasner S.W. Air stripping of taste and oder compounds from water. Jour. AWWA , 1984, (3): 83-87) found that the initial concentration is the dominant factor affecting the effect of aeration to remove odor and taste, and the removal rate increases with the increase of concentration. When the concentration is 100ng / L, dimethylisoborneol The removal rate is only 48%; (Wang Junyu, Lin Fortune, Fengshan and Gangxi Water Purification Plant Odor Research, The Seventeenth T...

Claims

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Application Information

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IPC IPC(8): B01J23/745C02F1/30C02F1/32
Inventor 毕东苏臧鹏李隽王鹏何慧红
Owner SHANGHAI INST OF TECH
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