CN109794277A - A kind of ceria/graphite phase carbon nitride composite material and its application in photocatalysis - Google Patents
A kind of ceria/graphite phase carbon nitride composite material and its application in photocatalysis Download PDFInfo
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- CN109794277A CN109794277A CN201910090165.5A CN201910090165A CN109794277A CN 109794277 A CN109794277 A CN 109794277A CN 201910090165 A CN201910090165 A CN 201910090165A CN 109794277 A CN109794277 A CN 109794277A
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Abstract
The present invention relates to a kind of ceria/graphite phase carbon nitride composite material and its application in photocatalysis, the CeO2/g‑C3N4After the preparation method of composite material includes the following steps: that (1) grinds cyanamid dimerization, melamine uniformly in mortar, it is placed in Muffle furnace, after being warming up to 550 DEG C, heat preservation 5 hours with the rate of 10 DEG C/min, room temperature is down to the rate of 5 DEG C/min to get g-C3N4；(2) cerous nitrate is dissolved in deionized water, g-C obtained in step (1) is added3N4, urea and EDTA, after 150 DEG C, heat preservation 12 hours are heated in autoclave, cooled to room temperature, filtering after precipitating deionized water, dehydrated alcohol wash, are dried in vacuo the CeO to obtain the final product2/g‑C3N4Composite material.
Description
Technical field
The invention belongs to material and photocatalysis fields, and in particular to a kind of ceria/graphite phase carbon nitride composite material
And its application in photocatalysis.
Background technique
Water is that the mankind depend on for existence indispensable resource, and water pollution problems annoyings always people, chloracetic acid
(HAAs) especially trichloroacetic acid (TCAA) industry, agriculturally be widely used and water sterilization during main disinfection pair
Product has strong carcinogenicity, seriously threatens the life security of the mankind.The present invention provides a kind of ceria/graphite-phase nitridation
Carbon composite, under visible light, can effectively degrade the material TCAA.
Summary of the invention
The present invention provides a kind of CeO2/g-C3N4Composite material, it is characterised in that the CeO2/g-C3N4The system of composite material
Preparation Method includes the following steps:
(1) it after grinding cyanamid dimerization, melamine in mortar uniformly, is placed in Muffle furnace, with the speed of 10 DEG C/min
After rate is warming up to 550 DEG C, heat preservation 5 hours, room temperature is down to get g-C with the rate of 5 DEG C/min3N4；
(2) cerous nitrate is dissolved in deionized water, g-C obtained in step (1) is added3N4, urea and EDTA, Yu Gao
After being heated to 150 DEG C, heat preservation 12 hours in pressure reaction kettle, cooled to room temperature, filtering, precipitating deionized water, anhydrous second
After alcohol washing, it is dried in vacuo up to the CeO2/g-C3N4Composite material (it is spare to be ground into fine powder).
Cyanamid dimerization in step (1), melamine molar ratio be 1:1；Every gram of g-C in step (2)3N4Use nitric acid Asia
The molar ratio of cerium 1mmol, urea and cerous nitrate is 1:1, and the mole dosage of urea is 2 times of EDTA.
Another embodiment of the present invention provides above-mentioned CeO2/g-C3N4The preparation method of composite material, it is characterised in that packet
Include following steps:
(1) it after grinding cyanamid dimerization, melamine in mortar uniformly, is placed in Muffle furnace, with the speed of 10 DEG C/min
After rate is warming up to 550 DEG C, heat preservation 5 hours, room temperature is down to get g-C with the rate of 5 DEG C/min3N4；
(2) cerous nitrate is dissolved in deionized water, g-C obtained in step (1) is added3N4, urea and EDTA, Yu Gao
After being heated to 150 DEG C, heat preservation 12 hours in pressure reaction kettle, cooled to room temperature, filtering, precipitating deionized water, anhydrous second
After alcohol washing, it is dried in vacuo up to the CeO2/g-C3N4Composite material (it is spare to be ground into fine powder).
Cyanamid dimerization in step (1), melamine molar ratio be 1:1；Every gram of g-C in step (2)3N4Use nitric acid Asia
The molar ratio of cerium 1mmol, urea and cerous nitrate is 1:1, and the mole dosage of urea is 2 times of EDTA.
Another embodiment of the present invention provides above-mentioned CeO2/g-C3N4Composite material is in photocatalytic degradation trichloroacetic acid
Application.
Compared with the prior art, the advantages of the present invention are as follows: the present invention is by using cyanamid dimerization: melamine=1:1
G-C is prepared3N4And load C eO2Successfully obtain the CeO of TCAA that can degrade a kind of2/g-C3N4Composite material, the present invention is for the first time
Obtain the CeO for the TCAA that can degrade2/g-C3N4Composite material.
Detailed description of the invention
Fig. 1 is g-C prepared by embodiment 13N4SEM figure；
Fig. 2 is the SEM figure of product A；
Fig. 3 is g-C prepared by embodiment 23N4SEM figure；
Fig. 4 is product A-B, g-C3N4Photocatalytic degradation TCAA effect picture.
Specific embodiment
For the ease of a further understanding of the present invention, examples provided below has done more detailed description to it.But
It is that these embodiments are only not supposed to be a limitation to the present invention or implementation principle for better understanding invention, reality of the invention
The mode of applying is not limited to the following contents.
Embodiment 1
(1) after grinding cyanamid dimerization (10mmol), melamine (10mmol) in mortar uniformly, it is placed in Muffle furnace
In, after being warming up to 550 DEG C, heat preservation 5 hours with the rate of 10 DEG C/min, room temperature is down to get g-C with the rate of 5 DEG C/min3N4
(Fig. 1)；
(2) cerous nitrate (1mmol) is dissolved in deionized water (15mL), g-C is added3N4(1.0g, step (1) preparation
), urea (1.0mmol) and EDTA (0.5mmol), it is natural after 150 DEG C, heat preservation 12 hours are heated in autoclave
It is cooled to room temperature, filters, after precipitating deionized water, dehydrated alcohol wash, be dried in vacuo up to the CeO2/g-C3N4It is compound
Material (hereinafter referred to as product A, Fig. 2, it is spare to be ground into fine powder).
Embodiment 2
(1) it after grinding melamine (20mmol) in mortar uniformly, is placed in Muffle furnace, with the rate of 10 DEG C/min
After being warming up to 550 DEG C, heat preservation 5 hours, room temperature is down to get g-C with the rate of 5 DEG C/min3N4(Fig. 3)；
(2) cerous nitrate (1mmol) is dissolved in deionized water (15mL), g-C is added3N4(1.0g, step (1) preparation
), urea (1.0mmol) and EDTA (0.5mmol), it is natural after 150 DEG C, heat preservation 12 hours are heated in autoclave
It is cooled to room temperature, filters, after precipitating deionized water, dehydrated alcohol wash, be dried in vacuo up to CeO2/g-C3N4Composite material
(hereinafter referred to as product B, it is spare to be ground into fine powder).
3 trichloroacetic acid degradation experiment of embodiment
It configures the TCAA solution (pH about 5.5-5.6,3 parts) that 200ml initial concentration is 2.0mg/L and is separately added into 0.2g product
A、B、g-C3N4(prepared by embodiment 1), it is first each in dark room conditions using 500W xenon lamp and 420nm optical filter as visible light source
It is stirred to react 45min, then turns on light and is stirred to react 60min；According to document (Wang Fen, etc., environmental project journal, the 9th phase of volume 9,
2015,4153-4158) record analysis method, every 15min, with TCAA concentration calculation degradation rate in HPLC analytical solution.
The experimental results showed that degradation effect the product A > B, g-C of TCAA3N4TCAA drops TCAA without degradation (Fig. 4), product A
It is best to solve effect, after illumination 60min, to the degradation rate of TCAA up to 52%.
Claims (5)
1. a kind of CeO2/g-C3N4Composite material, it is characterised in that the CeO2/g-C3N4The preparation method of composite material includes such as
Lower step:
(1) it after grinding cyanamid dimerization, melamine in mortar uniformly, is placed in Muffle furnace, with the rate liter of 10 DEG C/min
Temperature after heat preservation 5 hours, is down to room temperature with the rate of 5 DEG C/min to 550 DEG C to get g-C3N4；
(2) cerous nitrate is dissolved in deionized water, g-C obtained in step (1) is added3N4, urea and EDTA, it is anti-in high pressure
It answers after being heated to 150 DEG C, heat preservation 12 hours in kettle, cooled to room temperature, filtering, precipitating deionized water, dehydrated alcohol are washed
After washing, it is dried in vacuo up to the CeO2/g-C3N4Composite material.
2. CeO described in claim 12/g-C3N4Composite material, it is characterised in that cyanamid dimerization, melamine in step (1)
Molar ratio be 1:1.
3. the described in any item CeO of claim 1-22/g-C3N4Composite material, it is characterised in that every gram of g-C in step (2)3N4
Using cerous nitrate 1mmol, the molar ratio of urea and cerous nitrate is 1:1, and the mole dosage of urea is 2 times of EDTA.
4. the described in any item CeO of claim 1-32/g-C3N4The preparation method of composite material, it is characterised in that including right
It is required that the described in any item steps of 1-3.
5. the described in any item CeO of claim 1-32/g-C3N4Application of the composite material in photocatalytic degradation trichloroacetic acid.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152711A (en) * | 2019-06-04 | 2019-08-23 | 南京大学 | A kind of CeO2@MoS2/g-C3N4Three-element composite photocatalyst and preparation method thereof |
| CN110560130A (en) * | 2019-09-12 | 2019-12-13 | 哈尔滨工业大学 | preparation method of cerium dioxide nanosphere-carbon nitride composite visible-light-driven photocatalyst |
| CN110860204A (en) * | 2019-12-01 | 2020-03-06 | 陈洁琼 | Solid deodorant and preparation method thereof |
| CN111450865A (en) * | 2020-04-28 | 2020-07-28 | 中山大学 | Preparation method and application of catalyst for oxidative degradation of bisphenol A by sulfate radical |
| CN111672497A (en) * | 2020-05-20 | 2020-09-18 | 上海工程技术大学 | Method for in-situ synthesis of cerium dioxide/graphite phase carbon nitride composite photocatalytic material |
| CN111704155A (en) * | 2020-01-20 | 2020-09-25 | 中国石油大学(华东) | CeO (CeO)2/g-C3N4Humidity sensor of hybrid membrane and preparation method and application thereof |
| CN111889126A (en) * | 2020-06-28 | 2020-11-06 | 南昌大学 | Preparation method and application of Fenton-like material with visible light response |
| CN111996613A (en) * | 2020-08-18 | 2020-11-27 | 西安工程大学 | Preparation method of cerium dioxide-graphite phase carbon nitride photocatalyst fiber |
| CN112023974A (en) * | 2020-09-22 | 2020-12-04 | 南京大学 | P-CeO2/g-C3N4Heterojunction material, preparation method and application thereof |
| CN112086672A (en) * | 2020-09-15 | 2020-12-15 | 中国科学院大连化学物理研究所 | Composite high-temperature proton exchange membrane for fuel cell and preparation method and application thereof |
| CN112823885A (en) * | 2019-11-21 | 2021-05-21 | 湖南大学 | Gold nanoparticle/cerium dioxide quantum dot jointly-modified graphite-phase carbon nitride nanosheet composite material and preparation method and application thereof |
| CN115608391A (en) * | 2022-04-28 | 2023-01-17 | 广州大学 | g-C 3 N 4 Load {100} CeO 2 Heterojunction material, preparation method and application thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152711A (en) * | 2019-06-04 | 2019-08-23 | 南京大学 | A kind of CeO2@MoS2/g-C3N4Three-element composite photocatalyst and preparation method thereof |
| CN110560130A (en) * | 2019-09-12 | 2019-12-13 | 哈尔滨工业大学 | preparation method of cerium dioxide nanosphere-carbon nitride composite visible-light-driven photocatalyst |
| CN112823885B (en) * | 2019-11-21 | 2022-06-28 | 湖南大学 | Gold nanoparticle/cerium dioxide quantum dot co-modified graphite phase carbon nitride nanosheet composite material and preparation method and application thereof |
| CN112823885A (en) * | 2019-11-21 | 2021-05-21 | 湖南大学 | Gold nanoparticle/cerium dioxide quantum dot jointly-modified graphite-phase carbon nitride nanosheet composite material and preparation method and application thereof |
| CN110860204A (en) * | 2019-12-01 | 2020-03-06 | 陈洁琼 | Solid deodorant and preparation method thereof |
| CN111704155B (en) * | 2020-01-20 | 2021-04-27 | 中国石油大学(华东) | CeO (CeO)2/g-C3N4Humidity sensor of hybrid membrane and preparation method and application thereof |
| CN111704155A (en) * | 2020-01-20 | 2020-09-25 | 中国石油大学(华东) | CeO (CeO)2/g-C3N4Humidity sensor of hybrid membrane and preparation method and application thereof |
| CN111450865A (en) * | 2020-04-28 | 2020-07-28 | 中山大学 | Preparation method and application of catalyst for oxidative degradation of bisphenol A by sulfate radical |
| CN111450865B (en) * | 2020-04-28 | 2021-06-11 | 中山大学 | Preparation method and application of catalyst for oxidative degradation of bisphenol A by sulfate radical |
| CN111672497A (en) * | 2020-05-20 | 2020-09-18 | 上海工程技术大学 | Method for in-situ synthesis of cerium dioxide/graphite phase carbon nitride composite photocatalytic material |
| CN111672497B (en) * | 2020-05-20 | 2023-03-31 | 上海工程技术大学 | Method for in-situ synthesis of cerium dioxide/graphite phase carbon nitride composite photocatalytic material |
| CN111889126A (en) * | 2020-06-28 | 2020-11-06 | 南昌大学 | Preparation method and application of Fenton-like material with visible light response |
| CN111996613A (en) * | 2020-08-18 | 2020-11-27 | 西安工程大学 | Preparation method of cerium dioxide-graphite phase carbon nitride photocatalyst fiber |
| CN111996613B (en) * | 2020-08-18 | 2022-12-23 | 西安工程大学 | Preparation method of cerium dioxide-graphite phase carbon nitride photocatalyst fiber |
| CN112086672A (en) * | 2020-09-15 | 2020-12-15 | 中国科学院大连化学物理研究所 | Composite high-temperature proton exchange membrane for fuel cell and preparation method and application thereof |
| CN112086672B (en) * | 2020-09-15 | 2021-12-07 | 中国科学院大连化学物理研究所 | Composite high-temperature proton exchange membrane for fuel cell and preparation method and application thereof |
| CN112023974A (en) * | 2020-09-22 | 2020-12-04 | 南京大学 | P-CeO2/g-C3N4Heterojunction material, preparation method and application thereof |
| CN112023974B (en) * | 2020-09-22 | 2021-08-24 | 南京大学 | P-CeO2/g-C3N4Heterojunction material, preparation method and application thereof |
| CN115608391A (en) * | 2022-04-28 | 2023-01-17 | 广州大学 | g-C 3 N 4 Load {100} CeO 2 Heterojunction material, preparation method and application thereof |
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Application publication date: 20190524 |