Removal of Methyl Green by CuO/COF Photocatalysts with Enhanced Adsorption and Photocatalytic Activity

IF 1.9 4区 化学 Q3 CHEMISTRY, MULTIDISCIPLINARY
Aijuan Wang, Xiaping Chen, Hanmin Tang, Fei Huang, Dr. Dongmei Yao
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Abstract

In this paper, copper oxide/covalent organic framework (CuO/COF) composites were prepared and investigated the photocatalytic performances for the removal of dyes. The characterization results of FTIR, XRD, and XPS, all proved that the CuO/COF composite were successfully prepared. The mapping of CuO/COF showed that the Cu element was uniformly distributed in the COF. After CuO was composited with COF, the energy band gap Eg decreased from 1.14 eV to 0.81 eV. The highest photocatalytic degradation rate of the CuO/COF composite was 94.00%. At the same time, the photocatalytic wavelength could be shifted from 254 nm to 356 nm. The enhancement of the photocatalytic activity of the CuO/COF composite was attributed to the increase in carrier transfer rate and the increase in the active sites. These results show that the CuO/COF photocatalyst has a strong potential for removing organic dyes under light of 254–356 nm, which also provides a certain reference value for the development of photocatalytic materials.

Abstract Image

具有更强吸附性和光催化活性的 CuO/COF 光催化剂去除甲基绿
本文制备了氧化铜/共价有机框架(CuO/COF)复合材料,并研究了其去除染料的光催化性能。傅立叶变换红外光谱、X 射线衍射和 XPS 表征结果均证明 CuO/COF 复合材料制备成功。CuO/COF 的图谱显示,铜元素均匀地分布在 COF 中。CuO 与 COF 复合后,能带隙 Eg 从 1.14 eV 下降到 0.81 eV。CuO/COF 复合材料的光催化降解率最高,达到 94.00%。同时,光催化波长可从 254 纳米转移到 356 纳米。CuO/COF 复合材料光催化活性的提高归因于载流子转移率的提高和活性位点的增加。这些结果表明,CuO/COF 光催化剂在 254-356 纳米波长的光下具有很强的去除有机染料的潜力,这也为光催化材料的开发提供了一定的参考价值。
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来源期刊
ChemistrySelect
ChemistrySelect Chemistry-General Chemistry
CiteScore
3.30
自引率
4.80%
发文量
1809
审稿时长
1.6 months
期刊介绍: ChemistrySelect is the latest journal from ChemPubSoc Europe and Wiley-VCH. It offers researchers a quality society-owned journal in which to publish their work in all areas of chemistry. Manuscripts are evaluated by active researchers to ensure they add meaningfully to the scientific literature, and those accepted are processed quickly to ensure rapid online publication.
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