CN105540640B - Preparation method of flower-shaped nanometer zinc oxide - Google Patents

Preparation method of flower-shaped nanometer zinc oxide Download PDF

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CN105540640B
CN105540640B CN201610051964.8A CN201610051964A CN105540640B CN 105540640 B CN105540640 B CN 105540640B CN 201610051964 A CN201610051964 A CN 201610051964A CN 105540640 B CN105540640 B CN 105540640B
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zinc oxide
preparation
flower
nanometer zinc
solution
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CN105540640A (en
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郭元茹
赵润民
潘清江
闫龙飞
刘远
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Northeast Forestry University
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    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01GCOMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G9/00Compounds of zinc
    • C01G9/02Oxides; Hydroxides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/06Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of zinc, cadmium or mercury
    • B01J35/39
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/70Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
    • C01P2002/72Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/03Particle morphology depicted by an image obtained by SEM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/01Particle morphology depicted by an image
    • C01P2004/04Particle morphology depicted by an image obtained by TEM, STEM, STM or AFM
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/30Particle morphology extending in three dimensions
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00Particle morphology
    • C01P2004/60Particles characterised by their size
    • C01P2004/61Micrometer sized, i.e. from 1-100 micrometer
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/12Surface area

Abstract

The invention discloses a preparation method of flower-shaped nanometer zinc oxide and relates to a preparation method of nanometer zinc oxide. The preparation method aims at preparing the nanometer zinc oxide which is high in crystallinity and stability, large in specific surface area and free of clustering and has other characteristics. Rosin which is low in price and easy to obtain serves as surfactant to prepare the nanoscale zinc oxide. The method includes the following steps that an alcohol solution of rosin is added into a sodium hydroxide solution and is mixed evenly, and a zinc acetate solution is slowly added dropwise under the conditions of ice water bath and stirring; aging is performed at room temperature, then a hydrothermal reaction is performed, natural cooling and crystallizing are performed, suction filtration is performed, precipitate is washed, calcinating is performed after drying, and then the flower-shaped nanometer zinc oxide is obtained. The product obtained through the preparation method is free of clustering, large in specific surface area and high in photocatalytic activity, the hydrothermal synthesis method technology is simple, production cost is low, and industrial production can be achieved.

Description

A kind of preparation method of flower-like nanometer Zinc Oxide
Technical field
The invention belongs to the technical field of nano material;It is related to a kind of preparation method of nano zine oxide;Specifically related to one Plant the preparation method with nano zine oxides of characteristic such as specific surface area are big, catalysis activity is high, stability is strong.
Background technology
With developing rapidly for modernization industry, the industrial wastewater containing organic poison is drained in the middle of environment in a large number, is caused Make water resource heavily contaminated, threaten the survival and development of the mankind.It is particularly some azo dyes, polyhalohydrocarbon and nitre Base aromatic compound, their Stability Analysis of Structures, strong toxicity, intractability are very big so that traditional environment project is effective very It is micro-.Therefore, at present in the urgent need to finding new, more suitable effectively method of wastewater treatment making up the deficiency of conventional art.Half The appearance of conductor metal oxide photocatalysis oxidation technique has brought hope, and it mainly includes TiO2、ZnO、WO3、 SnO2、Fe2O3Etc. N-type semiconductor material.Among these, TiO2Because of its stable chemical nature, oxidability is strong, the characteristic such as nontoxic and Become most ripe, the most widely used nano photocatalyst catalytic material of research.However, with going deep into photocatalytic degradation organic poison Research, it has been found that nano-ZnO compares TiO under many circumstances2Photocatalysis effect it is more preferable.With TiO2Compare, ZnO has following Advantage:(1) larger range of ultraviolet light can be absorbed;(2)TiO2It is indirect band-gap semiconductor, electron transition probability is relatively low, amount Son is less efficient, and catalytic reaction process is also slow, it is difficult to process the big waste water of those concentration height, quantity.Conversely, ZnO is direct band , there are no these in gap semiconductor.(3) meet specific physics and chemistry while will keeping higher photocatalytic activity again Can be difficult uniformly to be supported on other carriers which securely under conditions of requiring, and comparatively ZnO makes it easy to carry at other Adsorb on body.So ZnO can replace TiO2Become more promising new catalyst.
At present, the preparation method of nanoscale ZnO can be divided mainly into three classes:Solid phase method, liquid phase method, vapor phase method.With other sides Method is compared, and liquid phase method has that simple, reaction system is uniform, nanoparticle average particle size distribution is narrower, reaction temperature is low The characteristics of, it is the prefered method for preparing excellent nano ZnO material.But, nano-ZnO is caused due to its huge surface energy Grain is easy to reunite together so as to which pattern and size change, and have a strong impact on the performance of final products.Additionally, which is in purple It also occur that serious photoetch under conditions of outer light irradiation.Therefore will solve the above problems, it is necessary to its preparation condition is carried out sternly Lattice are controlled -- different surfactants is introduced in the preparation process of nano-ZnO be many scholars selections method.Therefore, It is current problem demanding prompt solution to search out suitable surfactant, is to prepare that particle diameter is less, the more preferable nano-ZnO material of dispersibility The key point of material.
The content of the invention
The invention discloses a kind of preparation method of flower-like nanometer Zinc Oxide;Purpose be prepare it is a kind of have high-crystallinity, The nano zine oxide of the characteristics such as high stability, bigger serface, soilless sticking.
A kind of preparation method of flower-like nanometer Zinc Oxide of the present invention is carried out in the steps below:By the alcoholic solution of Colophonium Be added in sodium hydroxide solution, mix homogeneously, then acetic acid zinc solution is slowly added dropwise under conditions of ice-water bath and stirring;Then It is aged under room temperature, then carries out hydro-thermal reaction, natural cooling crystallization, sucking filtration, washing precipitation is calcined after drying, that is, obtain flower-shaped receiving Rice Zinc Oxide.
Further limit:The mass concentration of the alcoholic solution of the Colophonium is 0.1~0.2g/mL, in the alcoholic solution of Colophonium Alcohol is ethanol.The alcoholic solution of 10~20mL Colophonium is added to into the NaOH solution that 36~90mL concentration is 2~5mol/L, zinc acetate Solution usage is 30~40mL, and the concentration of acetic acid zinc solution is 0.8~1.0mol/L.The drop speed of the acetic acid zinc solution is 1.5 ~2mL/min.The digestion time is 2~3h.The hydro-thermal reaction is 5~12h of reaction under the conditions of 75 DEG C.It is described naturally cold But crystallization time is 1~2h.Described washing precipitation is first with the deionized water again of absolute ethanol washing 2~3 times by precipitate Washing 2~3 times.Dry under the conditions of 40~80 DEG C.Described calcining is with the intensification speed of 3~10 DEG C/min under air conditionses Rate is heated to 205~300 DEG C, is incubated 1~3 hour, is further continued for being warming up to 500~650 DEG C, is incubated 1~3 hour.
Method of the present invention process is simple, equipment requirements be not high, and the low in raw material price such as Colophonium, ethanol is easy to get, Er Qieyi In recovery, therefore low production cost, can large-scale industrial production.
The Colophonium that the inventive method is used is natural product, and environmental friendliness will not cause pollution.
The basic soilless sticking of nano granular of zinc oxide that the inventive method is obtained, good dispersion.
The flower-like nanometer Zinc Oxide that the inventive method is obtained is formed by a large amount of nanometer rods self assemblies, regular appearance, homogeneous, is put down 90 ran of equal particle diameter, specific surface area are big.
Understand that its diffraction maximum is very sharp by the XRD nanometers collection of illustrative plates of the flower-like nanometer Zinc Oxide of the present invention, illustrate degree of crystallinity very Height, and there are not impurity peaks, illustrate that purity is very high.
The flower-like nanometer zinc oxide photocatalysis activity that the inventive method is obtained is high.With flower-shaped obtained in 0.1g the inventive method Nano zine oxide catalytic degradation 100mL concentration under the irradiation of 18W uviol lamps is the methylene blue solution of 5mg/L, is persistently stirred 2.5h, degradation rate nearly 100%.
Description of the drawings
Fig. 1 is the electron scanning micrograph of one products obtained therefrom of specific embodiment.
Fig. 2 is the electron scanning micrograph that specific embodiment one does not add Colophonium products obtained therefrom.
Fig. 3 is the transmission electron microscope photo of three products obtained therefrom of specific embodiment.
Fig. 4 is the X-ray diffraction analysis figure of three products obtained therefrom of specific embodiment.
It is dense that Fig. 5 is that one~tetra- products obtained therefrom of specific embodiment takes 0.1g catalytic degradation 100mL under 18W ultra violet lamps Spend the degradation rate of the methylene blue solution for 5mg/L;In Fig. 5, ■ represents specific embodiment one, ● represent specific embodiment Two, ▲ specific embodiment three is represented, ▼ represents specific embodiment four.
Specific embodiment
Specific embodiment one:In present embodiment, the preparation method of flower-like nanometer Zinc Oxide is to carry out in the steps below 's:
10g Colophonium is dissolved in into 100mL dehydrated alcohol, the alcoholic solution of the Colophonium of 0.1g/mL is made.
5g zinc acetates are dissolved in 30mL deionized waters and obtain acetic acid zinc solution.
The alcoholic solution of 20mL Colophonium is added to into the hydrogen that 90mL concentration is that 2mol/L is configured with deionized water by sodium hydroxide In sodium hydroxide solution, it is uniformly mixed, then acetic acid zinc solution is slowly added dropwise under conditions of ice-water bath and stirring, control drop speed For 1.5mL/min;Then 2h is aged under room temperature, pours the high-pressure hydrothermal reaction kettle of inner liner polytetrafluoroethylene into, be placed in 75 DEG C of baking ovens In carry out hydro-thermal reaction 12h, natural cooling crystallization 1h, sucking filtration, precipitate are first washed with deionized water for 3 times again with absolute ethanol washing Wash 3 times, dry at 80 DEG C, be placed in sintering furnace and calcined, first programming rate is 10 DEG C/min, 1h is incubated at 300 DEG C, then 600 DEG C are continuously heating to, then are incubated 1h, that is, obtain flower-like nanometer Zinc Oxide.
From Fig. 1 and Fig. 2, the nano zine oxide prepared by Colophonium, a diameter of 10m of flowers, each oxidation are not added Reunite between zinc bar heavier;The Zinc Oxide for adding Colophonium to prepare, its zinc oxide nano rod of flowers diameter on 5m, flowers are not rolled into a ball Poly- phenomenon.It can be seen that the introducing of Colophonium substantially causes the pattern of Zinc Oxide to become regular orderly, the diameter of nanometer flowers diminishes.
With flower-like nanometer Zinc Oxide catalytic degradation under the irradiation of 18W uviol lamps obtained in 0.1g present embodiment methods 100mL concentration is the methylene blue solution of 5mg/L, persistently stirs 2.5h, degradation rate nearly 100% (referring to Fig. 5).
Specific embodiment two:Present embodiment from unlike specific embodiment one:By the alcoholic solution of 20mL Colophonium It is added in the sodium hydroxide solution that 60mL concentration is 3mol/L.Other steps and parameter are identical with specific embodiment one.
With flower-like nanometer Zinc Oxide catalytic degradation under the irradiation of 18W uviol lamps obtained in 0.1g present embodiment methods 100mL concentration is the methylene blue solution of 5mg/L, persistently stirs 2.5h, degradation rate nearly 100% (referring to Fig. 5).
Specific embodiment three:Present embodiment from unlike specific embodiment one:By the alcoholic solution of 20mL Colophonium It is added in the sodium hydroxide solution that 45mL concentration is 4mol/L.Other steps and parameter are identical with specific embodiment one.
As seen from Figure 3, the nanorod length formed by Zinc Oxide is 400 nanometers, and width is in 90 rans.
Product after calcining as seen from Figure 4 is pure Zinc Oxide, and without other impurity, degree of crystallinity is high.
With flower-like nanometer Zinc Oxide catalytic degradation under the irradiation of 18W uviol lamps obtained in 0.1g present embodiment methods 100mL concentration is the methylene blue solution of 5mg/L, persistently stirs 2.5h, degradation rate nearly 100% (referring to Fig. 5).
Specific embodiment four:Present embodiment from unlike specific embodiment one:By the alcoholic solution of 20mL Colophonium It is added in the sodium hydroxide solution that 36mL concentration is 5mol/L.Other steps and parameter are identical with specific embodiment one.
With flower-like nanometer Zinc Oxide catalytic degradation under the irradiation of 18W uviol lamps obtained in 0.1g present embodiment methods 100mL concentration is the methylene blue solution of 5mg/L, persistently stirs 2.5h, degradation rate nearly 100% (referring to Fig. 5).
Specific embodiment five:Present embodiment from unlike specific embodiment one:Solution after ageing is poured into The high-pressure hydrothermal reaction kettle of inner liner polytetrafluoroethylene, is placed in 5h in 75 DEG C of baking ovens.Other steps and parameter and specific embodiment One is identical.

Claims (6)

1. a kind of preparation method of flower-like nanometer Zinc Oxide, it is characterised in that a kind of preparation method of flower-like nanometer Zinc Oxide be by What following step was carried out:
Ethanol solution of 10 ~ 20mL mass concentrations for the Colophonium of 0.1 ~ 0.2g/mL is added to into 36 ~ 90mL concentration for 2 ~ 5mol/ In the sodium hydroxide solution of L, mix homogeneously, then be slowly added dropwise under conditions of ice-water bath and stirring 30 ~ 40mL concentration for 0.8 ~ The acetic acid zinc solution of 1.0mol/L;Then it is aged under room temperature, then 5 ~ 12 h of hydro-thermal reaction, natural cooling is carried out under the conditions of 75 DEG C Crystallization, sucking filtration, washing precipitation under air conditionses are heated to 205 ~ 300 DEG C with the heating rate of 3 ~ 10 DEG C/min after drying, protect Temperature 1 ~ 3 hour, is further continued for being warming up to 500 ~ 650 DEG C, is incubated 1 ~ 3 hour, that is, obtains flower-like nanometer Zinc Oxide.
2. the preparation method of a kind of flower-like nanometer Zinc Oxide according to claim 1, it is characterised in that the zinc acetate is molten The drop speed of liquid is 1.5 ~ 2mL/min.
3. a kind of preparation method of flower-like nanometer Zinc Oxide according to claim 1, it is characterised in that the digestion time For 2 ~ 3h.
4. a kind of preparation method of flower-like nanometer Zinc Oxide according to claim 1, it is characterised in that the natural cooling Crystallization time is 1 ~ 2h.
5. the preparation method of a kind of flower-like nanometer Zinc Oxide according to claim 1, it is characterised in that described washing is sunk Shallow lake is that first 2 ~ 3 times precipitate is washed with deionized 2 ~ 3 times again with absolute ethanol washing.
6. the preparation method of a kind of flower-like nanometer Zinc Oxide according to claim 1, it is characterised in that in 40 ~ 80 DEG C of conditions Lower drying.
CN201610051964.8A 2016-01-26 2016-01-26 Preparation method of flower-shaped nanometer zinc oxide Expired - Fee Related CN105540640B (en)

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CN107029696A (en) * 2017-05-12 2017-08-11 济南大学 A kind of method that use green solvent prepares zinc oxide mesopore material at room temperature
CN107128965A (en) * 2017-05-31 2017-09-05 上海紫东薄膜材料股份有限公司 A kind of preparation method of the nano zine oxide with barrier ultraviolet light and blue light
CN107737942B (en) * 2017-10-23 2020-05-19 南京工程学院 Zero-valent iron/flower-like zinc oxide nano composite material and preparation method thereof
CN108344793B (en) * 2018-02-08 2023-08-25 浙江亿纳谱生命科技有限公司 Matrix, preparation method thereof and mass spectrometry detection method of metabolic molecules
CN111392765A (en) * 2020-05-08 2020-07-10 天津翔龙电子有限公司 Process for preparing ZnO nano-particles by hydrothermal method
CN114409923B (en) * 2021-11-25 2023-10-20 华南农业大学 Multifunctional self-healing antibacterial hydrogel and preparation method and application thereof
CN114084901B (en) * 2021-11-25 2023-11-24 广州先护特农业科技有限公司 Nano antibacterial material and preparation method and application thereof

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