Academic Journal
The synthesis of CB[8]/ZnO composites materials with enhanced photocatalytic activities
| Title: | The synthesis of CB[8]/ZnO composites materials with enhanced photocatalytic activities |
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| Authors: | Lan Li, Lin Liu, Zhuang Li, Danling Hu, Chao Gao, Jinyan Xiong, Wei Li |
| Source: | Heliyon, Vol 5, Iss 5, Pp e01714- (2019) |
| Publisher Information: | Elsevier, 2019. |
| Publication Year: | 2019 |
| Collection: | LCC:Science (General) LCC:Social sciences (General) |
| Subject Terms: | Materials chemistry, Science (General), Q1-390, Social sciences (General), H1-99 |
| More Details: | Enhancing the separation of hole-electron pairs is one of the valid pathway to enhance the photocatalytic degradation performance of semiconductors. In this work, cucurbit[8]uril/zinc oxide (CB[8]/ZnO) composites were prepared. The structure, morphology, surface elements and optical properties of the composite are characterized by powder X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoemission spectroscopy, thermogravimetric analysis, and specific surface area measurements. In the photocatalytic degradation of 500 mg/L reactive brilliant red X-3B and 400 mg/L reactive yellow X-RG solutions, the rate constant of the CB[8]/ZnO composite is six times that of pure ZnO. A possible photocatalytic degradation mechanism is proposed. Zn2+ ions chelate with the carbonyl group of CB[8] on the surface of CB[8]/ZnO. Under ultraviolet-visible light irradiation, the generated holes of ZnO are transferred to and trapped on the CB[8] units to facilitate the separation of electron-hole pairs, improving the photocatalytic performance of this system. |
| Document Type: | article |
| File Description: | electronic resource |
| Language: | English |
| ISSN: | 2405-8440 |
| Relation: | http://www.sciencedirect.com/science/article/pii/S2405844019314033; https://doaj.org/toc/2405-8440 |
| DOI: | 10.1016/j.heliyon.2019.e01714 |
| Access URL: | https://doaj.org/article/81f4010fe89b484dace398ab1df3f516 |
| Accession Number: | edsdoj.81f4010fe89b484dace398ab1df3f516 |
| Database: | Directory of Open Access Journals |
| ISSN: | 24058440 |
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| DOI: | 10.1016/j.heliyon.2019.e01714 |
| Published in: | Heliyon |
| Language: | English |