Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum
文献类型：期刊论文
| 作者 | Xiao, Jiadong1,2; Xie, Yongbing1; Li, Chuanhao3; Kim, Jae-Hong4; Tang, Kexin1; Cao, Hongbin1,5 |
| 刊名 | CATALYSIS TODAY
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 307页码:147-153 |
| 关键词 | Doughnut-like Structure Porous G-c3n4 Valance Band Positive Hole Oxidation |
| ISSN号 | 0920-5861 |
| DOI | 10.1016/j.cattod.2017.02.024 |
| 文献子类 | Article |
| 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. |
| WOS关键词 | GRAPHITIC CARBON NITRIDE ; VISIBLE-LIGHT ; HYDROGEN EVOLUTION ; QUANTUM DOTS ; OXIDATION ; WATER ; CATALYSIS ; NANOPARTICLES ; DEGRADATION ; PERFORMANCE |
| WOS研究方向 | Chemistry ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000428231400019 |
| 资助机构 | Natural Science Foundation of Beijing Municipality(8172043) ; National Science Fund for Distinguished Young Scholars of China(51425405) ; US National Science Foundation Nanosystems Engineering Research Center for Nanotechnology-Enabled Water Treatment(ERC-1449500) |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/24200]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, Div Environm Technol & Engn, Beijing Engn Res Ctr Proc Pollut Control, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Sun Yat Sen Univ, Sch Environm Sci & Engn, 132 East Waihuan Rd, Guangzhou 510006, Guangdong, Peoples R China 4.Yale Univ, Res Ctr Nanotechnol Enabled Water Treatment NEWT, Dept Chem & Environm Engn & Nanosyst Engn, 17 Hillhouse Ave, New Haven, CT 06511 USA 5.Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China |
| 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[J]. CATALYSIS TODAY,2018,307:147-153. |
| APA | Xiao, Jiadong,Xie, Yongbing,Li, Chuanhao,Kim, Jae-Hong,Tang, Kexin,&Cao, Hongbin.(2018).Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum.CATALYSIS TODAY,307,147-153. |
| MLA | Xiao, Jiadong,et al."Enhanced hole-dominated photocatalytic activity of doughnut-like porous g-C3N4 driven by down-shifted valance band maximum".CATALYSIS TODAY 307(2018):147-153. |
入库方式： OAI收割
来源：过程工程研究所
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