Two-dimensional graphene/g-C3N4 in-plane hybrid heterostructure for enhanced photocatalytic activity with surface-adsorbed pollutants assistant
文献类型：期刊论文
| 作者 | Li, Fan; Tang, Mei; Li, Tong; Zhang, Lili ; Hu, Chun
|
| 刊名 | APPLIED CATALYSIS B-ENVIRONMENTAL
 |
| 出版日期 | 2020-07-05 |
| 卷号 | 268页码:1-10 |
| 关键词 | Carbon nitride Graphene/g-C3N4 Pollutant adsorption LED photocatalyst Polarization of charge distribution |
| ISSN号 | 0926-3373 |
| 英文摘要 | A two-dimensional graphene/g-C3N4 in-plane hybrid heterostructure (DCN-C-8), which achieved similar to 32.0-fold enhanced visible-light photocatalytic performance for pollutant degradation compared to bulk g-C3N4, was prepared by a self-conversion process. The characterizations indicated that graphene was stitched onto the edge of carbon nitride, not only extending the photoabsorption to energies below intrinsic bandgap, but also strengthening the interaction between pollutants and catalyst surface by pi-pi and hydrogen bonds. The stronger interaction promoted the polarization of charge distribution of DCN-C-8 to further enhance the separation and transfer of photogenerated e-/h(+), providing an efficient pathway for electron transfer from pollutants to DCN-C-8. Both interfacial electron transfer processes were verified that the photoexcited electrons are rapidly transferred from carbon nitride part to graphene by pi-conjugated bond-stitched structure and trapped by O-2 to generate (center dot)O(2)(-)for degradation of pollutants. Meanwhile, adsorbed pollutants is decomposed by transferring electrons to the positive holes on the valence band of DCN-C-g. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45379]  |
| 专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Fan,Tang, Mei,Li, Tong,et al. Two-dimensional graphene/g-C3N4 in-plane hybrid heterostructure for enhanced photocatalytic activity with surface-adsorbed pollutants assistant[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2020,268:1-10. |
| APA | Li, Fan,Tang, Mei,Li, Tong,Zhang, Lili,&Hu, Chun.(2020).Two-dimensional graphene/g-C3N4 in-plane hybrid heterostructure for enhanced photocatalytic activity with surface-adsorbed pollutants assistant.APPLIED CATALYSIS B-ENVIRONMENTAL,268,1-10. |
| MLA | Li, Fan,et al."Two-dimensional graphene/g-C3N4 in-plane hybrid heterostructure for enhanced photocatalytic activity with surface-adsorbed pollutants assistant".APPLIED CATALYSIS B-ENVIRONMENTAL 268(2020):1-10. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。