CaTiO3/CaO composite material as well as preparation method and application thereof

A composite material and mixed solution technology, applied in the field of new materials, can solve the problems of long labor time, large equipment loss, low efficiency, etc., and achieve the effects of avoiding strong alkali pollution, saving production costs, and low production costs.

Active Publication Date: 2020-07-31
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the traditional water treatment methods have problems such as complicated process, large total project investment, large floor area, long labor time, large equipment loss, complicated equipment maintenance and low efficiency, so the water pollution problem has not been well solved.
(Zhang Dong, Hou Ping. Preparation of nano-calcium titanate powder and its adsorption behavior to lead and cadmium in water. School of Environmental and Chemical Engineering, Shenyang University of Technology, 2009) This method has relatively high calcination temperature

Method used

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  • CaTiO3/CaO composite material as well as preparation method and application thereof
  • CaTiO3/CaO composite material as well as preparation method and application thereof
  • CaTiO3/CaO composite material as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0039] The CaTiO of this embodiment 3 The preparation method of / CaO composite material, comprises the following steps:

[0040] (1) take by weighing the TiOSO of 0.8g 4 Mix it with 20mL of water, stir vigorously for 30min under the condition of ultrasonic power of 180W, and continue stirring at 30°C to obtain TiOSO 4 Solution A;

[0041](2) Weigh 0.5g of CaCO 3 Place in 15mL of water and stir ultrasonically for 30min at room temperature to obtain CaCO 3 Suspension B; wherein, the ultrasonic power is 180W;

[0042] (3) Weigh CO(NH 2 ) 2 Dissolve in 10mL water, stir evenly and let it stand to obtain transparent CO(NH 2 ) 2 Solution C;

[0043] (4) TiOSO in step (1) 4 Solution A was placed in a constant temperature magnetic stirrer, kept at a constant temperature of 30°C and stirred at a medium speed, and then the CaCO prepared in step (2) 3 Suspension B was slowly added to TiOSO 4 In solution A, stir for 2 hours, and obtain mixed solution D after the reaction; wherei...

Embodiment 2

[0051] The CaTiO of this embodiment 3 The preparation method of / CaO composite material, comprises the following steps:

[0052] (1) take by weighing the TiOSO that quality is 1.4g 4 Mix with 30mL of water, stir vigorously for 30min under ultrasonic power of 180W, then continue stirring at 30°C to obtain TiOSO 4 Solution A;

[0053] (2) Weigh 1g of CaCO 3 Place in 30mL of water and stir ultrasonically for 30min at room temperature to obtain CaCO 3 Suspension B; wherein, the ultrasonic power is 180W;

[0054] (3) Weigh 1g of CO(NH 2 ) 2 Dissolve in 20mL water, stir evenly and let it stand to obtain transparent CO(NH 2 ) 2 Solution C;

[0055] (4) TiOSO in step (1) 4 Solution A was placed in a constant temperature magnetic stirrer, kept at a constant temperature of 30°C and stirred at a medium speed, and then the CaCO prepared in step (2) 3 Suspension B was slowly added to TiOSO 4 In solution A, stir for 2 hours, and obtain mixed solution D after the reaction; wherein...

Embodiment 3

[0061] The CaTiO of this embodiment 3 The preparation method of / CaO composite material, comprises the following steps:

[0062] (1) take by weighing the TiOSO that quality is 0.85g 4 Mix with 20mL of deionized water, stir vigorously for 30min under the condition of ultrasonic power of 180W, and continue stirring at 25°C to obtain TiOSO 4 Solution A;

[0063] (2) Weigh 0.5g of CaCO 3 Placed in 15 mL of deionized water, stirred ultrasonically for 30 min at room temperature to obtain CaCO 3 Suspension B, wherein the ultrasonic power is 180W;

[0064] (3) Weigh CO(NH 2 ) 2 Dissolve in 12mL deionized water, stir evenly and let stand to obtain transparent CO(NH 2 ) 2 Solution C;

[0065] (4) TiOSO in step (1) 4 Solution A was placed in a constant temperature magnetic stirrer, kept at a constant temperature of 30°C and stirred at a medium speed, and then the CaCO prepared in step (2) 3 Suspension B was slowly added to TiOSO 4 In solution A, stir for 2 hours, and obtain mi...

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Abstract

The invention relates to a CaTiO3/CaO composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, slowly adding a CaCO3 suspension into a TiOSO4 solution which is continuously stirred under a first preset temperature condition, and uniformly stirring to obtain a mixed solution; S2, stirring the mixed solution obtained in thestep S1 under a second preset temperature condition at a constant temperature, dropwise adding a CO (NH2) 2 solution, and adjusting the pH value of the mixed solution to 5-7; and S3, carrying out hydrothermal reaction on the mixed solution obtained in the step S2, and calcining a product of the hydrothermal reaction to obtain the CaTiO3/CaO composite material. According to the method, strong acidand strong alkali are prevented from being used, meanwhile, the cubic CaTiO3 and spherical CaO composite photocatalytic material with uniform particle size distribution is prepared through calcination under the low-temperature condition, and the method has the advantages of energy saving, high production efficiency, environmental friendliness, good product performance and the like.

Description

technical field [0001] The invention belongs to the technical field of new materials, in particular to a CaTiO 3 / CaO composite material and its preparation method and application. Background technique [0002] With the advancement of social science and technology, the economy has developed rapidly, and people's production and lifestyle have been changed by leaps and bounds, which has led to the destruction of the environment on which human beings live, resulting in energy shortages, especially water resources and pollution. , making human life and health face unprecedented challenges, which has caused countries all over the world to spend a lot of financial and material resources to improve and control water pollution problems. However, the traditional water treatment methods have problems such as complex process, large total project investment, large floor area, long labor time, large equipment loss, complicated equipment maintenance and low efficiency. Therefore, the pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02B01J37/10B01J37/08C02F1/30B01D53/94B01D53/56H01L51/42C02F101/30C02F101/36C02F101/38
CPCB01J23/02B01J35/004B01J37/10B01J37/08C02F1/30B01D53/9413C02F2305/10C02F2101/30B01D2258/012C02F2101/40C02F2101/38C02F2101/36H10K30/00Y02E10/549Y02W10/37
Inventor 盛嘉伟占文卿孙青张俭
Owner ZHEJIANG UNIV OF TECH
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