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Method for synthesizing samarium doped titanium dioxide powder by phonochemistry-microwave hydrothermal two-step process

A microwave hydrothermal and titanium dioxide technology, applied in titanium dioxide, titanium oxide/hydroxide and other directions, can solve the problems of low utilization rate of raw materials, high equipment requirements, long preparation cycle, etc., and achieve uniform size, low preparation cost, and reaction cycle. short effect

Inactive Publication Date: 2010-06-09
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods either require high equipment and are relatively expensive; or the utilization rate of raw materials is very small; or the process is complicated, the preparation cycle is long, and the repeatability is poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1: 1) at first, will analyze pure butyl titanate (C 16 h 36 o 4 Ti) was slowly added to dehydrated ethanol, and the resulting mixed solution was continuously stirred as A, wherein the volume ratio of butyl titanate:dehydrated ethanol=1:0.5;

[0016] 2) Next, mix the analytically pure deionized water and dehydrated ethanol evenly to prepare a transparent solution with a volume ratio of deionized water: dehydrated ethanol=1:1, and then add analytically pure samarium chloride (SmCl 3 ) is dissolved in this solution so that the mass percentage of samarium chloride is 0.05%, and the resulting solution is denoted as B;

[0017] 3) Then, in solution B, slowly add analytically pure glacial acetic acid, be mixed with the solution of volume ratio glacial acetic acid: solution B=1: 5, and gained solution is denoted as C;

[0018] 4) Mix the above-mentioned A and C solutions according to the volume ratio of 1:0.2 and pour them into the Erlenmeyer flask, and place them...

Embodiment 2

[0021] Embodiment 2: 1) at first, will analyze pure butyl titanate (C 16 h 36 o 4 Ti) was slowly added to dehydrated ethanol, and the resulting mixed solution was continuously stirred as A, wherein the volume ratio of butyl titanate:dehydrated ethanol=1:3;

[0022] 2) Next, mix the analytically pure deionized water and absolute ethanol evenly to prepare a transparent solution with a volume ratio of deionized water: absolute ethanol=1:4, and then add analytically pure samarium chloride (SmCl 3 ) is dissolved in this solution so that the mass percentage of samarium chloride is 1.5%, and the resulting solution is denoted as B;

[0023] 3) Then, in solution B, slowly add analytically pure glacial acetic acid, be mixed with the solution of volume ratio glacial acetic acid: solution B=1: 8, and gained solution is denoted as C;

[0024] 4) Mix the above-mentioned A and C solutions according to the volume ratio of 1:1 and pour them into the Erlenmeyer flask, place them in the KQ500...

Embodiment 3

[0027] Embodiment 3: 1) at first, will analyze pure butyl titanate (C 16 h 36 o 4 Ti) was slowly added to dehydrated ethanol, and the resulting mixed solution was continuously stirred as A, wherein the volume ratio of butyl titanate:dehydrated ethanol=1:5;

[0028] 2) Next, mix the analytically pure deionized water and dehydrated ethanol evenly to prepare a transparent solution with a volume ratio of deionized water: dehydrated ethanol=1:6, and then add analytically pure samarium chloride (SmCl 3 ) is dissolved in this solution so that the mass percent of samarium chloride is 3%, and the gained solution is denoted as B;

[0029] 3) Then, in solution B, slowly add analytically pure glacial acetic acid, be mixed with the solution of volume ratio glacial acetic acid: solution B=1: 10, and gained solution is denoted as C;

[0030] 4) Mix the above A and C solutions at a volume ratio of 1:5 and pour them into a conical flask, place them in a KQ500TDB cleaning tank type ultrasoni...

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Abstract

The invention relates to a method for synthesizing samarium doped titanium dioxide powder by a phonochemistry-microwave hydrothermal two-step process, which comprises the following steps of: firstly, slowly adding analytically pure butyl titanate into anhydrous alcohol to obtain a solution A, uniformly mixing analytically pure deionized water with the anhydrous alcohole, and then dissolving analytically pure samaric chloride into the solution A to obtain a solution B; adding analytically pure glacial acetic acid the solution B to obtain a solution C; uniformly mixing the solution A with the solution C and placing in an ultrasonic wave generator to perform ultrasonic reaction, and then naturally cooling to the room temperature to obtain a solution D; pouring the solution D into a hydrothermal reaction kettle, sealing the hydrothermal reaction kettle is sealed, placing in a microwave hydrothermal reaction instrument, and naturally cooling to the room temperature after reaction; opening the hydrothermal reaction kettle, centrifugally collecting and washing and drying the product to obtain the final product of the samarium doped titanium dioxide powder. The invention has the simple technological equipment; and compared with the titanium dioxide powder, the prepared powder has obvious capability for catalyzing the organic matters to degrade after being irradiated under visible lights.

Description

technical field [0001] The invention relates to a preparation method of samarium-doped titanium dioxide powder, in particular to a method for synthesizing samarium-doped titanium dioxide powder in two steps of sonochemistry-microwave hydrothermal. Background technique [0002] TiO 2 Nanomaterials have the functions of self-cleaning, decontamination, easy cleaning, and antibacterial. They have broad application prospects in protecting the public environment and creating a comfortable, clean and pollution-free living space. Its photocatalytic properties and super-hydrophilicity are praised by Japanese scholars. "The Light Cleaning Revolution". But nano TiO 2 It has super-hydrophilic, bactericidal, and organic decomposition effects only under ultraviolet light conditions, which limits its scope of use, namely: nano-TiO under non-ultraviolet light conditions 2 No self-cleaning effect. In order to improve performance, many people pass in TiO 2 The method of doping other meta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
Inventor 卢靖黄剑锋曹丽云吴建鹏李翠艳
Owner SHAANXI UNIV OF SCI & TECH
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