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Method using solvothermal method to prepare C3N4/CaTi2O5 composite material

A technology of C3N4 and composite materials, applied in the field of photocatalysis, can solve the problems of low utilization rate of visible light, and achieve the effects of excellent photocatalytic performance, broad market prospects and simple process route.

Active Publication Date: 2017-01-25
JINGDEZHEN CERAMIC INSTITUTE
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  • Abstract
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  • Claims
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Problems solved by technology

On the basis of previous experiments, our research group obtained pure metastable CaTi by solvothermal method. 2 o 5 nanostructures, and found that CaTi 2 o 5 It has superior photocatalytic effect than P25 under the irradiation of ultraviolet-visible light, but it only has a strong absorption edge at 370nm of ultraviolet light, and the utilization rate of visible light is low

Method used

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  • Method using solvothermal method to prepare C3N4/CaTi2O5 composite material
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  • Method using solvothermal method to prepare C3N4/CaTi2O5 composite material

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Embodiment 1

[0026] A kind of adopting solvothermal method to prepare C 3 N 4 / CaTi 2 o 5 The method for composite material, is characterized in that comprising the following steps:

[0027] Step 1: According to the molar ratio of butyl titanate:ethanol=1:5, dissolve butyl titanate in ethanol, stir until uniform to obtain A solution;

[0028] Step 2: Dissolve calcium chloride in distilled water according to the molar ratio of calcium chloride: distilled water: ethanol = 1: 350: 10, then add ethanol, and stir until uniform to obtain B solution;

[0029] Step 3: Add solution A drop by drop into solution B under stirring, add concentrated hydrochloric acid after stirring for 5 minutes, adjust the pH value to 4.5, filter and wash with distilled water 6 times, and then dry in a vacuum oven at 90°C Dry for 18h to form the precursor CaTi 2 o 5 white precipitate;

[0030] Step 4: According to the precursor CaTi 2 o 5 : ethanol: distilled water = 1:5:150, the precursor CaTi 2 o 5 Stir an...

Embodiment 2

[0034] A kind of adopting solvothermal method to prepare C 3 N 4 / CaTi 2 o 5 The method for composite material, is characterized in that comprising the following steps:

[0035] Step 1: According to the molar ratio of isopropyl titanate:propanol=1:5, dissolve isopropyl titanate in propanol, and stir until uniform to obtain A solution;

[0036] Step 2: Dissolve calcium chloride in distilled water according to the molar ratio of calcium chloride: distilled water: propanol=1:200:1, then add propanol, and stir until uniform to obtain B solution;

[0037] Step 3: Add solution A drop by drop into solution B under stirring, add concentrated hydrochloric acid after stirring for 5 minutes, adjust the pH value to 4.5, filter and wash with distilled water for 3 times, and then dry in a vacuum oven at 90°C Dry for 24 hours to form the precursor CaTi 2 o 5 white precipitate;

[0038] Step 4: According to the precursor CaTi 2 o 5 : propanol: distilled water = 1:5:100, the precursor...

Embodiment 3

[0042] A kind of adopting solvothermal method to prepare C 3 N 4 / CaTi 2 o 5 The method for composite material, is characterized in that comprising the following steps:

[0043] Step 1: According to the molar ratio of titanium chloride:butanol=1:2, titanium chloride is dissolved in butanol, and stirred until uniform to obtain A solution;

[0044] Step 2: Dissolve calcium chloride in distilled water according to the molar ratio of calcium chloride: distilled water: butanol=1:100:5, then add butanol, and stir until uniform to obtain B solution;

[0045] Step 3: Add solution A drop by drop into solution B under stirring, add concentrated nitric acid after mixing for 5 minutes, adjust the pH value to 4.9, filter and wash with distilled water for 3 times, and then dry in a vacuum oven at 90°C Dry for 20 hours to form the precursor CaTi 2 o 5 white precipitate;

[0046] Step 4: According to the precursor CaTi 2 o 5 : butanol: distilled water = 1:10:50, the precursor CaTi 2...

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Abstract

The invention discloses a method using a solvothermal method to prepare a C3N4 / CaTi2O5 composite material. The method includes: dissolving the compound of titanium into organic solvent, and evenly stirring to obtain a solution A; dissolving calcium chloride into distilled water, adding an organic solvent, and evenly stirring to obtain a solution B; dropwise adding the solution A into the solution B in a stirring state, and adding a strong acid solution to form precursor CaTi2O5; evenly mixing the precursor CaTi2O5 with an organic solvent and distilled water to obtain a mixed solution C; adding C3N4 into the mixed solution C to obtain a suspension solution D, adding a strong acid solution into the suspension solution D, placing into a reactor kettle for reaction, washing, and drying to obtain the C3N4 / CaTi2O5 composite material. The method has the advantages that the light response range of the CaTi2O5 is expanded, the photocatalytic performance of the CaTi2O5 is improved, and accordingly the prepared C3N4 / CaTi2O5 composite material is promising in market prospect.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a method for preparing C 3 N 4 / CaTi 2 o 5 Composite approach. Background technique [0002] At present, problems such as energy depletion and environmental pollution are becoming more and more prominent, especially the problem of water resources and its pollution is becoming more and more serious, which seriously threatens the healthy existence of human beings, which has attracted great attention from all countries in the world, and invested a lot of financial and material resources Control water pollution. However, traditional water treatment methods have problems such as low efficiency and secondary pollution. Photocatalytic technology provides a green way to solve these problems, but there are problems such as complex preparation process of photocatalyst, high cost and difficult recycling. Therefore, seeking some new photocatalyst materials with high efficiency an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30
CPCC02F1/30B01J27/24B01J37/08B01J35/39
Inventor 董伟霞包启富吴丽清顾幸勇蔡磊彭刚
Owner JINGDEZHEN CERAMIC INSTITUTE
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