Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum
文献类型：会议论文
| 作者 | Xiao, Jiadong; Xie, Yongbing; Li, Chuanhao; Kim, Jae-Hong; Tang, Kexin; Cao, Hongbin |
| 出版日期 | 2018 |
| 会议日期 | JUL 10-13, 2016 |
| 会议地点 | Newcastle, AUSTRALIA |
| 关键词 | Doughnut-like structure GRAPHITIC CARBON NITRIDE Porous g-C3N4 VISIBLE-LIGHT Valance band HYDROGEN EVOLUTION Positive hole oxidation QUANTUM DOTS OXIDATION WATER CATALYSIS NANOPARTICLES DEGRADATION PERFORMANCE |
| 卷号 | 307 |
| 期号 | SI |
| DOI | 10.1016/j.cattod.2017.02.024 |
| 页码 | 147 ; 153 |
| 英文摘要 | This study introduces a doughnut-like, highly porous g-C3N4 photocatalyst fabricated using a double bubble templating method which employs two synergistic gas-generating agents (H2O2 and NH4Cl). The concurrent thermolysis of H2O2 and NH4Cl synergistically enhances g-C3N4 exfoliation and nanopore production, as the released O-2 and NH3 undergo violent exothermic reactions during g-C3N4 growth. The resultant g-C3N4 (H2O2-NH4Cl-g-C3N4) exhibited 8.9 times higher specific surface area compared to bulk g-C3N4, and 3.2-6.4 times as large as those synthesized using individual NH4Cl or H2O2. The photocatalytic activities of these g-C3N4 samples were found to linearly correlate with their valance band( VB) maximum potentials; for example, H2O2-NH4Cl-g-C3N4 possessed a VB maximum down-shifted by 0.34 eV, and consequently exhibited 7.1 times larger photocatalytic hydroquinone degradation rate than the bulk g-C3N4. Electrochemical analysis and trapping experiments collectively suggested that the VB downshift caused more efficient separation of charge carriers, and subsequent enhancement in positive hole-dominated photocatalytic oxidation of hydroquinone. (c) 2017 Elsevier B.V. All rights reserved. |
| 会议录 | Article; Proceedings Paper
 |
| WOS记录号 | WOS:000428231400019 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28946]  |
| 专题 | 中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Xiao, Jiadong,Xie, Yongbing,Li, Chuanhao,et al. Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum[C]. 见:. Newcastle, AUSTRALIA. JUL 10-13, 2016. |
入库方式： OAI收割
来源：过程工程研究所
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。