Cu<sub>2</sub>O-TiO<sub>2</sub>复合膜的制备及其光催化与产氢性能

王熙; 蔡奕璇; 萧子君; 何春; 李来胜

doi:10.6054/j.jscnun.2022037

Cu₂O-TiO₂复合膜的制备及其光催化与产氢性能

doi: 10.6054/j.jscnun.2022037

1.
华南师范大学环境学院，广州 510006
2.
中山大学环境科学与工程学院/广东省环境污染控制与修复技术重点实验室，广州 510006

基金项目:

广东省自然科学基金项目 2022A1515011377

广东省环境污染控制与修复技术重点实验室开放基金资助项目 2020B1212060022

详细信息

通讯作者:
王熙, Email: wangxi@m.scnu.edu.cn

中图分类号: TQ116.2
计量
- 文章访问数: 25
- HTML全文浏览量: 6
- PDF下载量: 15
- 被引次数: 0
出版历程
- 收稿日期: 2022-03-10
- 网络出版日期: 2022-07-29
- 刊出日期: 2022-06-25

The Preparation of Cu₂O-TiO₂ Composite Films and Their Properties of Photocatalytic and Hydrogen Production

1.
School of Environment, South China Normal University, Guangzhou 510006
2.
Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology/School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou 510006

摘要

摘要: 采用电化学沉积和涂覆法将窄带半导体材料Cu₂O与TiO₂复合制备了Cu₂O-TiO₂复合材料薄膜，并通过扫描电子显微镜(SEM)、X射线衍射(XRD)、荧光光谱(PL)、紫外-可见漫反射光谱(UV-Vis DRS)进行了表征。以甲醇溶液为模拟废水进行产氢性能的测试，探究了光源、TiO₂质量分数、甲醇体积分数、pH对产氢性能的影响。实验表明：制备的Cu₂O-TiO₂复合薄膜材料可直接在太阳光下催化水中甲醇产氢，且甲醇体积分数越高产氢量越大，在甲醇体积分数为50%且在偏酸性时产氢量最大。
- Cu₂O-TiO₂ /
- 太阳能 /
- 产氢
Abstract: Cu₂O-TiO₂ composite films were prepared by combining narrow-band semiconductor material Cu₂O and TiO₂ with the electrochemical deposition and coating methods, and characterized with SEM, XRD, PL and UV-Vis DRS. The hydrogen production performance was tested with methanol solution as simulated wastewater. The effects of light source, TiO₂ loading, methanol solution concentration and pH on hydrogen production performance were investigated. The results show that the prepared Cu₂O-TiO₂ composite films can directly catalyze the hydrogen production of organic matter in water under sunlight. The higher the concentration of organic matter, the higher the hydrogen production. When the concentration of methanol is 50%, the hydrogen production is highest. In addition, the hydrogen production is higher when it is acidic.
- Cu₂O-TiO₂ /
- solar light /
- hydrogen production

HTML全文

图 1 实验装置示意图

Figure 1. The schematic of experimental apparatus

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图 2 Cu₂O薄膜表面及Cu₂O-TiO₂/Cu横截面的SEM图

Figure 2. The SEM images of Cu₂O film and the cross section plane of Cu₂O-TiO₂/Cu

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图 3 Cu₂O和Cu₂O-TiO₂薄膜的XRD图谱

Figure 3. The XRD patterns of Cu₂O and Cu₂O-TiO₂ films

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图 4 Cu₂O、TiO₂和Cu₂O-TiO₂的UV-Vis DRS谱

Figure 4. The UV-Vis DRS spectra of Cu₂O, TiO₂ and Cu₂O-TiO₂

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图 5 Cu₂O、TiO₂和Cu₂O-TiO₂的光致荧光光谱

Figure 5. The photofluorescence spectra of Cu₂O, TiO₂ and Cu₂O-TiO₂

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图 6 TiO₂质量分数对产氢性能的影响

Figure 6. The effect of TiO₂ loading on the properties of hydrogen production

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图 7 甲醇质量分数对产氢量的影响

Figure 7. The effect of methanol mass fraction on hydrogen production

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图 8 pH对产氢量的影响

Figure 8. The effect of pH on hydrogen production

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表 1 Cu₂O-TiO₂在不同光源下的产氢速率

Table 1. The hydrogen production rate of Cu₂O-TiO₂ under different light sources

光源	产氢速率/(mmol·h^-1·m^-2)
紫外光	38.03
太阳光	93.12
可见光	未检出

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