| Title: | Hydroxyl/amino and Fe(III) co-grafted graphite carbon nitride for photocatalytic removal of volatile organic compounds |
| Author(s): | Liang X; Feng W; Liang D; Xu Y; Qiu X; |
| Address: | "College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, PR China; Shenzhen Research Institute of Central South University, Shenzhen, 518057, PR China; Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha, 410083, Hunan, China. Hunan Province Key Laboratory of Applied Environmental Photocatalysis, Changsha University, Changsha, 410022, PR China. Electronic address: fengwenhui1991@126.com. College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, PR China. College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, PR China; Shenzhen Research Institute of Central South University, Shenzhen, 518057, PR China; Hunan Provincial Key Laboratory of Chemical Power Sources, Central South University, Changsha, 410083, Hunan, China. Electronic address: xq-qiu@csu.edu.cn" |
| DOI: | 10.1016/j.envres.2021.111044 |
| ISSN/ISBN: | 1096-0953 (Electronic) 0013-9351 (Linking) |
| Abstract: | "Hydroxyl/amino and Fe(III) co-grafted graphite carbon nitride (CN) is fabricated via alkaline hydrothermal treatment and followed by an impregnation adsorption process. In this unique fabrication, hydroxyl and amino groups enriched on the surface play a vital role in improving the adsorption capacity for volatile organic compounds (VOCs), while the grafted amorphous Fe(III) clusters could dominantly regulate the path of molecular oxygen activation via photo-Fenton reaction, and change the selectivity of intermediate reactive oxygen species (ROS) with the assistant of the rich surficial hydroxyl groups. Meanwhile, both the grafted functional groups and Fe(III) clusters can serve as photogenerated charge acceptors for collaboratively accelerating carriers' separation. Besides, the Fe(III)-mediated interfacial charge transfer effect (IFCT) also could extend visible light absorption and boost carriers' generation. Benefiting from the virtues of the complementary and synergy of the grafted hydroxyl/amino and Fe(III), the dual-functionalized CN is qualified as an efficient photocatalyst for removal of VOCs, which exhibits 22 and 18 times isopropanol (IPA) adsorption capacity and CO(2) production than of pristine CN during photocatalytic IPA removal, respectively. Moreover, this work provides a new strategy of surficial group-cluster bifunctionalization for systematically improving sustainable solar-to-chemical energy conversion towards VOCs mineralization" |
| Keywords: | Catalysis Ferric Compounds *Graphite Nitriles *Volatile Organic Compounds Graphitic carbon nitride Interfacial charge transfer effect Surficial group-cluster bifunctionalization VOCs mineralization; |
| Notes: | "MedlineLiang, Xiang Feng, Wenhui Liang, Dong Xu, Yan Qiu, Xiaoqing eng Research Support, Non-U.S. Gov't Netherlands 2021/03/24 Environ Res. 2021 Jun; 197:111044. doi: 10.1016/j.envres.2021.111044. Epub 2021 Mar 20" |
