Preparation method of anatase nano-titanium dioxide powder modified via codoping of iron element with other two non-metallic elements

A nano-titanium dioxide, non-metallic element technology, applied in the field of photocatalytic materials, can solve the problems of uneven product morphology, low photocatalytic activity, poor stability, etc., to avoid the influence of morphology and stability, and achieve high catalytic activity. , the effect of uniform size

Active Publication Date: 2015-04-22
LINGNAN NORMAL UNIV
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  • Description
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  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to overcome the defects of high reaction temperature, long reaction cycle, inhomogeneous product appearance, poor stability and low photocatalytic performance in the preparation method of modified nano-titanium dioxide powder in the prior art. Provided is a method for preparing modified anatase-type nano-titanium dioxide powder co-doped with iron element and two non-metallic elements. A ternary co-doped nano-titanium dioxide powder with one iron element and two non-metallic elements solves the problem of the influence of high temperature treatment on the shape and stability of the product, and has the advantages of simple preparation process, low cost, fast, energy saving and high efficiency. advantage

Method used

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  • Preparation method of anatase nano-titanium dioxide powder modified via codoping of iron element with other two non-metallic elements
  • Preparation method of anatase nano-titanium dioxide powder modified via codoping of iron element with other two non-metallic elements
  • Preparation method of anatase nano-titanium dioxide powder modified via codoping of iron element with other two non-metallic elements

Examples

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Effect test

Embodiment 1

[0046] A preparation method of iron, nitrogen and sulfur three elements co-doped modified anatase nano-titanium dioxide powder: comprising the following steps:

[0047] In a small beaker, add 4 mL of alkylphenol ethoxylate (OP-10), 6 mL of n-butanol (C 4 h 9 OH), 20mL cyclohexane (C 6 h 12 ), 2 mL butyl titanate (Ti(OC 4 h 9 ) 4 , stir evenly to obtain a clear mixture A, in another beaker, add 0.0921 g FeCl 3 ·6H 2 O, 0.0304 g NH 4 Cl, and 0.0432 g thiourea, add 4 mL 0.1 M hydrochloric acid, add 4 mL alkylphenol polyoxyethylene ether (OP-10), 6 mL n-butanol (C 4 h 9 OH), 20 mL cyclohexane (C 6 h 12 ), stir evenly to obtain a clear mixed solution B, slowly drop the mixed solution B into the mixed solution A, and stir while dripping to obtain a clear mixed solution C, and then transfer the mixed solution C to a 100 mL liner poly Put it in a vinyl fluoride hydrothermal reaction kettle, put it into a drying oven, and keep a constant temperature of 160 °C for 4 h un...

Embodiment 2

[0051] A preparation method of iron, nitrogen and sulfur three elements co-doped modified anatase nano-titanium dioxide powder: comprising the following steps:

[0052] In a small beaker, add 4 mL of alkylphenol ethoxylate (OP-10), 6 mL of n-butanol (C 4 h 9 OH), 20mL cyclohexane (C 6 h 12 ), 2 mL butyl titanate (Ti(OC 4 h 9 ) 4 , stir evenly to obtain a clear mixture A, in another beaker, add 0.0921 g FeCl 3 ·6H 2 O, 0.0304 g NH 4 Cl, and 0.0432 g thiourea, add 4 mL 0.1 M hydrochloric acid, add 4 mL alkylphenol polyoxyethylene ether (OP-10), 6 mL n-butanol (C 4 h 9 OH), 20 mL cyclohexane (C 6 h 12 ), stir evenly to obtain a clear mixed solution B, slowly drop the mixed solution B into the mixed solution A, and stir while dripping to obtain a clear mixed solution C, and then transfer the mixed solution C to a 100 mL liner poly Put it in a vinyl fluoride hydrothermal reaction kettle, put it in a drying oven, and keep a constant temperature of 180 °C for 2 h unde...

Embodiment 3

[0057] A preparation method of iron, nitrogen and sulfur three elements co-doped modified anatase nano-titanium dioxide powder: comprising the following steps:

[0058] In a small beaker, add 4 mL of alkylphenol ethoxylate (OP-10), 6 mL of n-butanol (C 4 h 9 OH), 20mL cyclohexane (C 6 h 12 ), stir well to obtain a clear mixture A, in another beaker, add 2 mL of titanium tetrachloride (TiCl 4 ), 0.0921 g FeCl 3 ·6H 2 O, 0.0304 g NH 4 Cl, and 0.0432 g thiourea, 4 mL 0.1 M hydrochloric acid, add 4 mL alkylphenol polyoxyethylene ether (OP-10), 6 mL n-butanol (C 4 h 9 OH), 20 mL cyclohexane (C 6 h 12 ), stir evenly to obtain a clear mixed solution B, slowly drop the mixed solution B into the mixed solution A, and stir while dripping to obtain a clear mixed solution C, and then transfer the mixed solution C to a 100 mL liner poly Put it in a vinyl fluoride hydrothermal reaction kettle, put it in a drying oven, and keep a constant temperature of 180 °C for 2 h under sol...

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Abstract

The invention belongs to the technical field of photocatalysis material, and specifically relates to a preparation method of anatase nano-titanium dioxide powder modified via codoping of iron element with other two non-metallic elements. According to the preparation method, alkylphenol ethoxylates, and a monohydric alcohol with 4 to 7 carbon atoms are taken as surfactants; an alkane or a cycloparaffin with 5 to 8 carbon atoms are taken as an oil phase; inorganic or organic titanium source is taken as a raw material; a dilute acid solution containing iron element and the other two non-metallic elements are taken as water phase; and the anatase nano-titanium dioxide powder is prepared via solvothermal method; wherein one of the two non-metallic elements is selected from nitrogen, phosphorus, or arsenic, and the other one of the non-metallic elements is selected from oxygen, sulphur, selenium, or tellurium. Conditions of the preparation method are mild; influences on product morphology and stability caused by high temperature processing are avoided; size of the modified anatase nano-titanium dioxide powder is controllable, and uniform; diameter ranges from 8 to 20nm; the anatase nano-titanium dioxide powder can be used for degrading methyl orange in the presence of visible light, and degradation rate of methyl orange is as high as 96% after 1.5h of reaction.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, more specifically, to a method for preparing anatase-type nano-titanium dioxide powder co-doped with iron and two non-metallic elements. Background technique [0002] TiO 2 As a photocatalytic material, it has always been a hot spot in the research of materials science and catalytic chemistry. Nanoscale TiO 2 Due to its small particle size and high surface activity, it has unique small size effect, surface effect and quantum effect, which can effectively reduce the recombination of photogenerated electrons and photons, and strengthen TiO 2 redox ability; at the same time nano-TiO 2 The huge surface energy can adsorb reactants on its surface, which is conducive to the catalytic reaction. At the same time, TiO 2 It is non-toxic, has good chemical stability, has bactericidal effect on many bacteria, and is an environmentally friendly catalyst, so nano-TiO 2 It has unique propert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
Inventor 徐旭耀周小松马琳罗金周晓平许丽梅张玲玲
Owner LINGNAN NORMAL UNIV
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