KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| Visible light-activated degradation of microcystin-LR by ultrathin g-C3N4 nanosheets-based heterojunction photocatalyst | |
| Xu, Yifeng; Hu, Bingkun; Liu, Jining; Tao, Kai; Wang, Ranran; Ren, Yang; Zhao, Xiaofeng; Xu, Jijin; Song, Xuefeng | |
| 2019-12-31 | |
| Source Publication | JOURNAL OF THE AMERICAN CERAMIC SOCIETY
 |
| ISSN | 0002-7820 |
| Subtype | Article; Early Access |
| Abstract | Microcystins (MCs) is a harmful toxin generated by blue-green algae in water, which has seriously threatened the ecological safety of water and human body. It is urgent to develop new catalysts and techniques for the degradation of MCs. A feasible electrostatic self-assembly method was carried out to synthesize BiVO4/g-C3N4 heterojunction photocatalyst with highly efficient photocatalytic ability, where BiVO4 nanoplates with exposed {010} facets anchored to the g-C3N4 ultrathin nanosheets. The morphology and microstructure of the heterojunction photocatalysts were identified by XRD, SEM, TEM, XPS, and BET. The g-C3N4 nanosheets have huge surface area over 200 m(2)/g and abundant mesoporous ranging from 2-20 nm, which provides tremendous contact area for BiVO4 nanoplates. Meanwhile, the introduction of BiVO4 led to red-shift of the absorption spectrum of photocatalyst, which was characterized by UV-vis diffuse reflection spectroscopy (DRS). Compared with pure BiVO4 and g-C3N4, the BiVO4/g-C3N4 heterojunction shows a drastically enhanced photocatalytic activity in degradation of microcystin-LR (MC-LR) in water. The MC-LR could be removed within 15 minutes under the optimal ratio of BiVO4/g-C3N4. The outstanding performance of the photocatalyst is attributed to synergetic effect of interface Z-scheme heterojunction and high active facets {010} of BiVO4 nanoplates, which provides an efficient transfer pathway to separate photoinduced carriers meanwhile endows the photocatalysts with strong redox ability. |
| Keyword | BiVO4 g-C3N4 nanosheets heterojunction photocatalytic ability |
| DOI | 10.1111/jace.16773 |
| WOS Keyword | COMPOSITE PHOTOCATALYSTS ; H-2-PRODUCTION ACTIVITY ; DOPED TIO2 ; WATER ; NITROGEN ; FACETS ; FILMS ; CYANOTOXINS ; REMOVAL ; SOLVENT |
| Language | 英语 |
| WOS Research Area | Materials Science |
| Publisher | WILEY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/27538 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Xu, Yifeng,Hu, Bingkun,Liu, Jining,et al. Visible light-activated degradation of microcystin-LR by ultrathin g-C3N4 nanosheets-based heterojunction photocatalyst[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019. |
| APA | Xu, Yifeng.,Hu, Bingkun.,Liu, Jining.,Tao, Kai.,Wang, Ranran.,...&Song, Xuefeng.(2019).Visible light-activated degradation of microcystin-LR by ultrathin g-C3N4 nanosheets-based heterojunction photocatalyst.JOURNAL OF THE AMERICAN CERAMIC SOCIETY. |
| MLA | Xu, Yifeng,et al."Visible light-activated degradation of microcystin-LR by ultrathin g-C3N4 nanosheets-based heterojunction photocatalyst".JOURNAL OF THE AMERICAN CERAMIC SOCIETY (2019). |
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