阅读说明：本技术 一种碳纤维布@SnO2@SnS2异质结及其制备方法 (Carbon fiber cloth @ SnO2@SnS2Heterojunction and method for manufacturing the same ) 是由 吴小平 张亦哲 崔灿 刘静研 王顺利 金明泽 徐一峰 冉开灿 于 2020-03-09 设计创作，主要内容包括：本发明属于纳米材料领域,特别是涉及一种碳纤维布@SnO<Sub>2</Sub>@SnS<Sub>2</Sub>异质结及其制备方法,制备方法包括以下步骤：步骤一,利用磁控溅射法,在碳纤维布上溅射形成一层SnO<Sub>2</Sub>薄膜,并置于管式炉退火处理,得到碳纤维布@SnO<Sub>2</Sub>；步骤二,将四氯化锡和硫代乙酰胺溶于乙醇和醋酸的混合溶液中,搅拌一定时间,形成溶液A；步骤三,将溶液A和碳纤维布@SnO<Sub>2</Sub>装入反应釜中,放入恒温干燥箱中,一定温度下反应数小时；步骤四,让反应釜自然冷却至室温,用乙醇与去离子水分别洗涤多次,干燥,得到碳纤维布@SnO<Sub>2</Sub>@SnS<Sub>2</Sub>异质结。制备方法简单,重复性高,成本低,反应周期短,且对环境无污染,产品为柔性结构,可应用于光催化领域,并于光催化剂的回收,可作为光电探测器。(The invention belongs to the field of nano materials, and particularly relates to carbon fiber cloth @ SnO 2 @SnS 2 A heterojunction and a method for making the same, the method comprising the steps of: firstly, sputtering a layer of SnO on carbon fiber cloth by utilizing a magnetron sputtering method 2 Film and annealing treatment in a tube furnace to obtain carbon fiber cloth @ SnO 2 (ii) a Dissolving tin tetrachloride and thioacetamide in a mixed solution of ethanol and acetic acid, and stirring for a certain time to form a solution A; step three, mixing the solution A and carbon fiber cloth @ SnO 2 Putting the mixture into a reaction kettle, putting the reaction kettle into a constant-temperature drying box, and reacting for several hours at a certain temperature; step four, naturally cooling the reaction kettle to room temperature, washing the reaction kettle with ethanol and deionized water for multiple times respectively, and drying to obtain carbon fiber cloth @ SnO 2 @SnS 2 A heterojunction. The preparation method is simple, the repeatability is high, the cost is low, the reaction period is short, no pollution is caused to the environment, the product is of a flexible structure, and the product can be applied to the field of photocatalysis, can be used as light after the recovery of the photocatalystAn electrical detector.)

1. Carbon fiber cloth @ SnO₂@SnS₂The preparation method of the heterojunction is characterized by comprising the following steps:

firstly, sputtering a layer of SnO on carbon fiber cloth by utilizing a magnetron sputtering method₂Film and annealing treatment in a tube furnace to obtain carbon fiber cloth @ SnO₂；

Dissolving tin tetrachloride and thioacetamide in a mixed solution of ethanol and acetic acid, and stirring for a certain time to form a solution A;

step three, mixing the solution A and carbon fiber cloth @ SnO₂Putting the mixture into a reaction kettle, putting the reaction kettle into a constant-temperature drying box, and reacting for several hours at a certain temperature;

step four, naturally cooling the reaction kettle to room temperature, washing the reaction kettle with ethanol and deionized water for multiple times respectively, and drying to obtain carbon fiber cloth @ SnO₂@SnS₂A heterojunction.

2. Carbon fiber cloth @ SnO as set forth in claim 1₂@SnS₂A method for preparing a heterojunction, characterized in that: the sputtering time of the first step is 2-10 hours, the annealing temperature is 300-500 ℃, and the annealing time is 1-8 hours.

3. Carbon fiber cloth @ SnO as set forth in claim 1₂@SnS₂A method for preparing a heterojunction, characterized in that: the amount of the stannic chloride in the second step is 0.035 to 3.5 g; the amount of thioacetamide is 0.01875 to 1.875 g.

4. Carbon fiber cloth @ SnO as set forth in claim 1₂@SnS₂A method for preparing a heterojunction, characterized in that: the amount of the ethanol in the second step is 10-100 ml; the amount of acetic acid is 0.5-5 ml; the stirring time is 10-60 min.

5. Carbon fiber cloth @ SnO as set forth in claim 1₂@SnS₂A method for preparing a heterojunction, characterized in that: the reaction temperature of the third step is 100-200 ℃; the reaction time is 8-20 hours.

6. Carbon fiber cloth @ SnO₂@SnS₂A heterojunction, characterized in that: the carbon fiber cloth @ SnO prepared by the process according to any one of claims 1 to 5₂@SnS₂Heterojunction with several carbon fibers @ SnO₂@SnS₂Heterojunction formation, SnO₂@SnS₂The heterojunction is distributed at the periphery of the carbon fiber in a sheet shape, SnO₂@SnS₂The thickness of the heterojunction sheet is 20nm-50 nm.

Technical Field

The invention relates to the technical field of nano materials, in particular to carbon fiber cloth @ SnO₂@SnS₂A heterojunction and a method of fabricating the same.

Background

In transition metal sulfides, SnS₂The Sn-Si semiconductor material is an n-type semiconductor material with the band gap width of 2.2-2.5eV, each layer of Sn atoms is connected with S atoms through stronger Sn-S covalent bonds, and the layers are connected through weaker van der Waals force. The photocatalyst has the advantages of rich reserves, low price, high photocatalytic efficiency, large energy storage capacity and the like, and has better application prospect.

Disclosure of Invention

The invention aims to solve the primary technical problem of providing the carbon fiber cloth @ SnO with simple process, low cost, short reaction period and uniformity₂@SnS₂A heterojunction and a method of fabricating the same.

Carbon fiber cloth @ SnO₂@SnS₂A method of heterojunction preparation comprising the steps of:

firstly, sputtering a layer of SnO on carbon fiber cloth by utilizing a magnetron sputtering method₂Film and annealing treatment in a tube furnace to obtain carbon fiber cloth @ SnO₂；

Dissolving tin tetrachloride and thioacetamide in a mixed solution of ethanol and acetic acid, and stirring for a certain time to form a solution A;

step three, mixing the solution A and carbon fiber cloth @ SnO₂Putting the mixture into a reaction kettle, putting the reaction kettle into a constant-temperature drying box, and reacting for several hours at a certain temperature;

step four, naturally cooling the reaction kettle to room temperature, washing the reaction kettle with ethanol and deionized water for multiple times respectively, and drying to obtain the productTo carbon fiber cloth @ SnO₂@SnS₂A heterojunction.

Furthermore, the sputtering time in the step one is 2-10 hours, the annealing temperature is 300-500 ℃, and the annealing time is 1-8 hours.

Further, the amount of the stannic chloride in the step two is 0.035 to 3.5 g; the amount of thioacetamide is 0.01875 to 1.875 g.

Further, the amount of the ethanol in the step two is 10-100 ml; the amount of acetic acid is 0.5-5 ml; the stirring time is 10-60 min.

Further, the reaction temperature of the third step is 100-200 ℃; the reaction time is 8-20 hours.

The invention has the beneficial effects that: the invention relates to carbon fiber cloth @ SnO₂@SnS₂Preparation method of heterojunction, and carbon fiber cloth @ SnO prepared by magnetron sputtering method and liquid phase method₂@SnS₂The heterojunction has the advantages of simple preparation method, high repeatability, low cost, short reaction period and no pollution to the environment. Prepared carbon fiber cloth and SnO₂@SnS₂Firm heterojunction and SnO₂@SnS₂The heterojunction is distributed on the periphery of the carbon fiber, SnO₂@SnS₂The heterojunction has uniform size, adjustable size and good dispersion, and can be applied to the fields of photocatalysis, gas sensitivity, adsorption, photoelectric detection, solar cells, energy storage and the like.

Drawings

FIG. 1 is a carbon fiber cloth @ SnO prepared in example 1₂Scanning Electron Microscope (SEM) photograph of (a).

FIG. 2 is carbon fiber cloth @ SnO prepared in example 1₂@SnS₂Scanning Electron Microscope (SEM) photograph of (a).

Detailed Description

The following examples are presented to further illustrate the methods of the present invention and are not intended to limit the invention to these examples.