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A kind of adopting solvothermal method to prepare c 3 no 4 /cati 2 o 5 Composite Methods

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: 2020-12-04
JINGDEZHEN CERAMIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of adopting solvothermal method to prepare c <sub>3</sub> no <sub>4</sub> /cati <sub>2</sub> o <sub>5</sub> Composite Methods
  • A kind of adopting solvothermal method to prepare c <sub>3</sub> no <sub>4</sub> /cati <sub>2</sub> o <sub>5</sub> Composite Methods
  • A kind of adopting solvothermal method to prepare c <sub>3</sub> no <sub>4</sub> /cati <sub>2</sub> o <sub>5</sub> Composite Methods

Examples

Experimental program
Comparison scheme
Effect test

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 for preparing C using solvothermal method 3 N 4 / CaTi 2 O 5 The method of composite materials includes the following steps: dissolve the titanium compound in an organic solvent and stir until uniform to obtain solution A; dissolve calcium chloride in distilled water, then add the organic solvent and stir until uniform to obtain solution B; dissolve solution A Add the stirred solution B drop by drop, and form the precursor CaTi by adding a strong acid solution. 2 O 5 ;The precursor CaTi 2 O 5 Stir and mix with organic solvent and distilled water to obtain mixed solution C; 3 N 4 Add the suspension solution D obtained from the mixed solution C, add the strong acid solution to the suspension solution D, and then put it into the reaction kettle to react. After washing and drying, C is obtained. 3 N 4 / CaTi 2 O 5 Composite materials, the invention broadens the scope of CaTi 2 O 5 photoresponse range, improved CaTi 2 O 5 photocatalytic performance, so it has a broad market space.

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 Patents(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 UNIV