CN112007662A - Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst - Google Patents

Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst Download PDF

Info

Publication number
CN112007662A
CN112007662A CN202010639806.0A CN202010639806A CN112007662A CN 112007662 A CN112007662 A CN 112007662A CN 202010639806 A CN202010639806 A CN 202010639806A CN 112007662 A CN112007662 A CN 112007662A
Authority
CN
China
Prior art keywords
titanium dioxide
molybdenum disulfide
metal phase
nanotube composite
dioxide nanotube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010639806.0A
Other languages
Chinese (zh)
Inventor
陈苗根
常文雅
陈智
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Jiliang University
Original Assignee
China Jiliang University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Jiliang University filed Critical China Jiliang University
Priority to CN202010639806.0A priority Critical patent/CN112007662A/en
Publication of CN112007662A publication Critical patent/CN112007662A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/02Sulfur, selenium or tellurium; Compounds thereof
    • B01J27/04Sulfides
    • B01J27/047Sulfides with chromium, molybdenum, tungsten or polonium
    • B01J27/051Molybdenum
    • B01J35/39
    • B01J35/50
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2305/00Use of specific compounds during water treatment
    • C02F2305/10Photocatalysts

Abstract

The invention discloses a preparation method of a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst, which comprises the following steps: firstly, dissolving 18mg of MoO3, 21mg of thioacetamide and 180mg of urea in 80ml of deionized water to obtain a precursor solution of 1T-MoS 2; secondly, adding 40-4000mgTNTs powder into the solution, and stirring for 2 hours to fully mix the materials to obtain suspension; thirdly, transferring the suspension into a high-pressure reaction kettle with a 100mL Teflon liner, and reacting for 12-24h in an oven at 200 ℃; and fourthly, washing the product obtained after the reaction by deionized water and absolute ethyl alcohol to remove impurities, then drying in a vacuum drying oven, and finally grinding to obtain 0.5-5% of 1T-MoS2@ TNTs composite photocatalytic material powder. The metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalytic material is synthesized for the first time by a hydrothermal method with simple operation, and is found to show good capability of decomposing antibiotics in water under visible light.

Description

Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst
Technical Field
The invention belongs to the technical field of synthesis of molybdenum disulfide/titanium dioxide composite photocatalysts, and particularly relates to a preparation method and application of a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst.
Background
In recent years, with the increasing severity of water body antibiotic pollution, clean and efficient pollution treatment schemes are increasingly emphasized. Among them, the photocatalytic technology is considered to be an effective way to solve the antibiotic pollution of water body due to the advantages of cleanness, no pollution, low cost and the like. Semiconductor photocatalysts are widely researched in the aspect of degrading organic pollutants, and the search for efficient photocatalysts is always the research focus in the field.
TiO2 is applied to the research of the photocatalysis field for a long time due to the excellent photoelectric property, titanium dioxide nanotubes (TNTs) are a one-dimensional titanium dioxide material, compared with zero-dimensional titanium dioxide nanoparticles, the structure has larger specific surface area, higher utilization rate of sunlight, stronger adsorption effect and larger potential in the photocatalysis field. However, the photocatalytic ability is limited by the characteristics of titanium dioxide such as large forbidden bandwidth, poor response to visible light, high recombination efficiency of photo-generated electrons and holes, and the like, so that a material needs to be introduced for modification. Research shows that the catalytic performance of the catalyst can be effectively improved by loading MoS2 on the surface of TiO 2. The metallic phase molybdenum disulfide (1T-MoS2) possesses higher electron transfer efficiency and more abundant active sites than the semiconducting phase molybdenum disulfide 2H-MoS2, however previous studies have used 2H-MoS2 as a co-catalyst due to 1T-MoS2 instability. The preparation method of the stable 1T-MoS2 is mature at present, but no 1T-MoS2 and TiO2 composite material photocatalyst is reported.
Accordingly, there is a need for improvements in the art.
Disclosure of Invention
The invention aims to provide a preparation method and application of a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst with simple process and low cost.
In order to solve the technical problems, the invention provides a preparation method of a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst, which comprises the following steps: the method comprises the following steps:
step S1: 18mgMoO321mg thioacetamide and 180mg urea in 80ml deionized water to obtain 1T-MoS2In a 1T-MoS2Adding 40-4000mgTNTs powder into the precursor solution, and stirring for 2 hours to fully mix the materials to obtain a suspension;
step S2: transferring the suspension obtained in the step S1 into a 100mL Teflon-lined high-pressure reaction kettle (without pressurization), and reacting in an oven at 200 ℃ for 12-24h to obtain a reaction product;
step S3: washing the reaction product obtained in the step S2 by deionized water and absolute ethyl alcohol to remove impurities, then drying in a vacuum drying oven, and finally grinding to obtain 0.5-5% of 1T-MoS2@ TNTs composite photocatalytic material powder.
The preparation method of the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst is improved as follows:
the TNTs powder in step S1 was 4000 mg.
As a further improvement of the preparation method of the metal phase molybdenum disulfide/titanium dioxide nanotube composite material photocatalyst, the preparation method comprises the following steps:
in the step S2, the drying temperature in the oven is 60 ℃, and the reaction time is 12 h.
As a further improvement of the preparation method of the metal phase molybdenum disulfide/titanium dioxide nanotube composite material photocatalyst, the preparation method comprises the following steps:
in step S3, 0.5% by mass of 1T-MoS is obtained2@ TNTs composite photocatalytic material powder.
As a further improvement of the preparation method of the metal phase molybdenum disulfide/titanium dioxide nanotube composite material photocatalyst, the preparation method comprises the following steps:
the specific steps of removing impurities by washing with deionized water and absolute ethyl alcohol are as follows: washing with deionized water for 3 times, and washing with anhydrous ethanol for 3 times.
The invention also provides an application of the metal phase molybdenum disulfide/titanium dioxide nanotube composite material photocatalyst:
the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst degrades residual antibiotics in wastewater.
As an improvement on the application of the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst of the invention:
the antibiotic is tetracycline hydrochloride.
The preparation method and the application of the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst have the technical advantages that:
the invention synthesizes 1T-MoS for the first time2The @ TNTs composite photocatalytic material is found to show good capability of decomposing antibiotics in water under visible light. The invention is 1T-MoS2The application of the co-catalyst provides a new thought and a preparation method, and has a strong market application prospect.
The invention provides the 1T-MoS with simple process and low cost by adopting an in-situ synthesis method2A preparation method of a @ TNTs composite photocatalyst. MoS in the composite material prepared by the method2Is pure 1T phase, MoS2The nano particles are uniformly distributed on the TiO2 nano tube material and have better antibiotic degradation performance under visible light. Wherein the efficiency of degrading tetracycline hydrochloride by the composite photocatalyst with the mass ratio of 0.5% under visible light reaches 57%.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
FIG. 1 is an X-ray diffraction pattern and corresponding XRD standard card for photocatalysts prepared in example 1, comparative example 1 and comparative example 2 of the present invention;
FIG. 2a is a 1T-MoS prepared according to example 1 of the present invention2Scanning Electron Microscopy (SEM) of @ TNTs composite catalyst;
FIG. 2b is a 1T-MoS prepared according to example 1 of the present invention2Transmission Electron Microscopy (TEM) of @ TNTs composite catalyst;
FIG. 3 shows the preparation of photocatalysts prepared in example 1, comparative example 1 and comparative example 2 of the present inventionCatalytic Performance diagram, 1T-MoS2TNTs and 1T-MoS2The degradation rates of the @ TNTs composite catalyst were 0.6%, 22% and 56%, respectively.
Detailed Description
The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.
Example 1, a method for preparing a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst, comprising the steps of:
18mgMoO321mg thioacetamide and 180mg urea are dissolved in 80ml deionized water to obtain 1T-MoS24000mgTNTs powder is added into the precursor solution, and the mixture is stirred for 2 hours to fully mix the materials to obtain suspension. The suspension was transferred to a 100mL Teflon lined autoclave and allowed to react in an oven at 200 ℃ for 12 h. Washing the product obtained after the reaction by deionized water and absolute ethyl alcohol to remove impurities, drying in a vacuum drying oven, and finally grinding to obtain 0.5% 1T-MoS2@ TNTs composite photocatalytic material powder.
1T-MoS obtained in example 12The catalytic performance of the @ TNTs composite photocatalytic material powder is tested by degrading tetracycline hydrochloride within the visible light wavelength range (not less than 420 nm). The dosage of the catalyst is 50mg, and the concentration of the tetracycline hydrochloride solution is 20 mg/L. The 1h degradation rate was 57% as measured by UV-visible spectrophotometer.
Embodiment 2, a method for preparing a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst with different proportions, comprising the following steps:
400mg of TNTs powder and the balance of the TNTs powder are the same as those in example 1, and the composite photocatalytic material powder with the mass ratio of 5 percent is prepared, and the degradation rate of the composite photocatalytic material powder is 40 percent
Comparative example 1: 1T-MoS2The synthesis method of the catalyst comprises the following steps:
mixing 96mgMoO3102mg thioacetamide and 0.96g urea were dissolved in 80mL deionized water and stirred for 2h to mix well. The solution was then placed in an autoclave, and the oven was heatedAfter reaching 200 ℃, the reaction kettle is placed in the reaction kettle for reaction for 12 hours. And after the reaction is finished, taking out the reaction kettle, quickly cooling the reaction kettle to room temperature, collecting a solid product, and centrifugally washing the solid product by using deionized water and an ethanol solution. Drying and grinding the sample in a vacuum drying oven to obtain 1T-MoS2A catalyst powder.
Product 1T-MoS obtained in comparative example 12The catalytic performance of the catalyst powder is tested by degrading tetracycline hydrochloride within the visible light wavelength range (not less than 420 nm). The dosage of the catalyst is 50mg, and the concentration of the tetracycline hydrochloride solution is 20 mg/L. The degradation rate of 0.6 percent is obtained after 1 hour of test by an ultraviolet-visible spectrophotometer.
Comparative example 2: a method for synthesizing a TNTs catalyst comprises the following steps:
the powder P25 was added to 100mL of a concentrated alkali solution of NaOH having a concentration of 10mol/L and stirred with a magnetic stirrer for 4 hours, and then the solution was transferred to a Teflon liner and charged into a reaction vessel. The reaction kettle is placed into an oven at 150 ℃ for reaction for 12 hours. After the reaction is finished, HNO with the concentration of 0.1mol/L is used3And repeatedly washing the aqueous solution and the deionized water to obtain a white product, drying, and grinding into powder to obtain the TNTs sample.
The TNTs sample of the product obtained in the comparative example 2 degrades tetracycline hydrochloride in the visible wavelength range (not less than 420nm) to test the catalytic performance. The dosage of the catalyst is 50mg, and the concentration of the tetracycline hydrochloride solution is 20 mg/L. The 1h degradation rate is 22% as measured by an ultraviolet-visible spectrophotometer.
Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the invention. It is obvious that the invention is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the invention.

Claims (8)

1. A preparation method of a metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst is characterized by comprising the following steps: the method comprises the following steps:
step S1: 18mg of MoO321mg of thioacetylThe amine and 180mg urea were dissolved in 80ml deionized water to give 1T-MoS2In a 1T-MoS2Adding 40-4000mgTNTs powder into the precursor solution, and stirring for 2 hours to fully mix the materials to obtain a suspension;
step S2: transferring the suspension obtained in the step S1 to a reaction kettle with a Teflon liner of 100mL, and reacting in an oven at 200 ℃ for 12-24h to obtain a reaction product;
step S3: washing the reaction product obtained in the step S2 by deionized water and absolute ethyl alcohol to remove impurities, drying in a vacuum drying oven, and finally grinding to obtain 1T-MoS2@ TNTs composite photocatalytic material powder.
2. The method for preparing the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst according to claim 1, characterized in that:
1T-MoS21T-MoS in @ TNTs composite photocatalytic material powder2The mass ratio of the TNTs to the TNTs is 0.5-5 percent.
3. The method for preparing the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst according to claim 2, characterized in that:
the TNTs powder in step S1 was 4000 mg.
4. The method for preparing the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst according to claim 3, characterized in that:
in the step S2, the drying temperature in the oven is 60 ℃, and the reaction time is 12 h.
5. The method for preparing the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst according to claim 4, wherein:
in step S3, 0.5% by mass of 1T-MoS is obtained2@ TNTs composite photocatalytic material powder.
6. The method for preparing the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst according to claim 1, characterized in that:
the specific steps of removing impurities by washing with deionized water and absolute ethyl alcohol are as follows: washing with deionized water for 3 times, and washing with anhydrous ethanol for 3 times.
7. The application of the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst as claimed in claim 1, wherein:
the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst degrades residual antibiotics in wastewater.
8. The application of the metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst as claimed in claim 7, wherein:
the antibiotic is tetracycline hydrochloride.
CN202010639806.0A 2020-07-06 2020-07-06 Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst Pending CN112007662A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010639806.0A CN112007662A (en) 2020-07-06 2020-07-06 Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010639806.0A CN112007662A (en) 2020-07-06 2020-07-06 Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst

Publications (1)

Publication Number Publication Date
CN112007662A true CN112007662A (en) 2020-12-01

Family

ID=73498396

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010639806.0A Pending CN112007662A (en) 2020-07-06 2020-07-06 Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst

Country Status (1)

Country Link
CN (1) CN112007662A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113981484A (en) * 2021-10-25 2022-01-28 青海大学 High-purity metal phase molybdenum disulfide array/carbon fiber cloth composite material and preparation method and application thereof
CN114308076A (en) * 2021-11-30 2022-04-12 江苏大学 Composite photocatalyst, preparation method and application
CN115212898A (en) * 2021-04-14 2022-10-21 中国科学院大连化学物理研究所 Catalyst for preparing acetic acid by photocatalytic methane conversion and preparation method thereof
CN117005190A (en) * 2023-08-28 2023-11-07 广州广微环境科技有限公司 Mildew-proof antibacterial agent for textiles and preparation method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108786855A (en) * 2017-05-04 2018-11-13 中国计量大学 A kind of preparation method of mesoporous molybdenum disulfide visible light catalyst material and its application in degradation antibiotic waste water field
CN109621943A (en) * 2018-12-24 2019-04-16 南昌航空大学 A kind of preparation method and applications of 1T phase molybdenum disulfide carried titanium dioxide nano-tube array

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108786855A (en) * 2017-05-04 2018-11-13 中国计量大学 A kind of preparation method of mesoporous molybdenum disulfide visible light catalyst material and its application in degradation antibiotic waste water field
CN109621943A (en) * 2018-12-24 2019-04-16 南昌航空大学 A kind of preparation method and applications of 1T phase molybdenum disulfide carried titanium dioxide nano-tube array

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
XIUMEI GENG ET AL.,: "Pure and stable metallic phase molybdenum disulfide nanosheets for hydrogen evolution reaction", 《NATURE COMMUNICATIONS》 *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115212898A (en) * 2021-04-14 2022-10-21 中国科学院大连化学物理研究所 Catalyst for preparing acetic acid by photocatalytic methane conversion and preparation method thereof
CN115212898B (en) * 2021-04-14 2023-10-20 中国科学院大连化学物理研究所 Catalyst for preparing acetic acid by photocatalytic methane conversion and preparation method thereof
CN113981484A (en) * 2021-10-25 2022-01-28 青海大学 High-purity metal phase molybdenum disulfide array/carbon fiber cloth composite material and preparation method and application thereof
CN113981484B (en) * 2021-10-25 2023-09-22 青海大学 High-purity metal phase molybdenum disulfide array/carbon fiber cloth composite material and preparation method and application thereof
CN114308076A (en) * 2021-11-30 2022-04-12 江苏大学 Composite photocatalyst, preparation method and application
CN114308076B (en) * 2021-11-30 2023-10-10 江苏大学 Composite photocatalyst, preparation method and application
CN117005190A (en) * 2023-08-28 2023-11-07 广州广微环境科技有限公司 Mildew-proof antibacterial agent for textiles and preparation method thereof
CN117005190B (en) * 2023-08-28 2023-12-19 广州广微环境科技有限公司 Mildew-proof antibacterial agent for textiles and preparation method thereof

Similar Documents

Publication Publication Date Title
CN112007662A (en) Preparation method and application of metal phase molybdenum disulfide/titanium dioxide nanotube composite photocatalyst
CN101890344B (en) Preparation method of graphene/titanium dioxide composite photocatalyst
US10486138B2 (en) Method for hydrothermal synthesis of three dimensional Bi4MoO9/TiO2 nanostructure heterojunction
CN105478142B (en) A kind of indium sulfide meso-porous hollow microsphere photocatalyst and its preparation method and application
CN108671907B (en) Platinum/titanium dioxide nanoflower composite material and preparation method and application thereof
CN112553651B (en) Preparation method of selenide coated carbon nanotube material
CN111905766B (en) 0D/1D W18O49Preparation method and application of/CdS Z-type visible light catalyst
CN103253704B (en) Semiconductor porous bismuth oxide nanosphere and preparation method and application thereof
CN105944738A (en) Preparation method of TiO2/MoS2 composite material based on surface modification
CN111569882A (en) Cobaltosic oxide supported copper nano catalyst and preparation method thereof
CN113694925B (en) Porous titanium dioxide-cuprous oxide composite material and preparation method and application thereof
CN107126953B (en) Bismuth/non-stoichiometric ratio Oriviris compound nano composite material and preparation method and application thereof
CN113428894A (en) Method for circularly preparing nano flower-shaped titanium dioxide by using chloride ion liquid
CN112973733A (en) Piezoelectric photocatalyst, preparation method and application
CN109126829B (en) Preparation method of CdS-MoS2 composite powder with three-dimensional heterostructure
CN109107600B (en) Vacuum-assisted preparation of three layers g-C3N4/TiO2Method for coaxially compounding nanostructures
CN108404948B (en) One kind (BiO)2CO3-BiO2-xComposite photocatalyst and preparation method and application thereof
CN108722386B (en) Polymer-induced graphene growth multi-morphology TiO2Method for preparing photocatalyst
CN112892562B (en) Z-type Bi prepared based on in-situ synthesis method3O4Cl/Bi2MoO6Composite photocatalyst and application thereof
CN113559856B (en) Preparation method of barium titanate/silver iodate heterojunction photocatalyst
CN113926487A (en) Fullerol/palladium nano composite photocatalyst and preparation method and application thereof
CN113979471A (en) Synthetic method of rutile type titanium dioxide nano composite
CN110002494B (en) Superfine anatase type TiO2Nanowire and method for preparing same
CN108404898B (en) Method for preparing graphene/{ 001} surface-exposed titanium dioxide nanocomposite by using protonated titanate
CN112371161A (en) Carbon-point-modified graphite-phase carbon nitride hollow sphere photocatalyst and preparation method and application thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20201201

RJ01 Rejection of invention patent application after publication