Enhanced driving force and charge separation efficiency in disordered SnNbxOy: Boosting photocatalytic activity toward water reduction
文献类型：期刊论文
| 作者 | Huang, SS; Lang, JY; Du, CF; Bian, FG; Su, YG; Wang, XJ |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2017 |
| 卷号 | 309页码:313-320 |
| 关键词 | Photocatalysis Niobate Nanostructures Density Functional Calculations Disordered |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2016.10.061 |
| 文献子类 | 期刊论文 |
| 英文摘要 | In this work, the disordered SnNbxOy with controlled structural distortion was developed in order to uncover the underlying origination for highly enhanced photocatalytic activity of the disordered materials. Synchrotron radiation wide-angle X-ray scattering (SR-WAXS) and transmission electron microscopy (TEM) results indicated that the as-prepared catalysts show disordered features with controlled short range ordering limits. In combination with optical diffuse reflectance spectra, valence band X-ray photoelectron spectroscopy (VB-XPS) and density functional theory (DFT) prediction, the disordered structure engineering can induce continuous band gap broadening and downward valence band edge, predicting enhanced oxidation driving force. Moreover, transient absorption spectroscopy (TAS), electron spin resonance (EPR) spectra suggested that the highly enhanced photocatalytic activity mainly originates from defect-assisted charge separation, which implies that abundant defective centers may serve as trap centers for efficient charge separation and improve charge transfer rate to suppress the charge recombination process. Photocatalytic test demonstrated that the optimal photocatalytic activity toward H-2 evolution of the disordered catalyst shows similar to 11.7 times improvement with respect to that of the crystalline counterpart. (C) 2016 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000389166400034 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/27312]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 推荐引用方式 GB/T 7714 | Huang, SS,Lang, JY,Du, CF,et al. Enhanced driving force and charge separation efficiency in disordered SnNbxOy: Boosting photocatalytic activity toward water reduction[J]. CHEMICAL ENGINEERING JOURNAL,2017,309:313-320. |
| APA | Huang, SS,Lang, JY,Du, CF,Bian, FG,Su, YG,&Wang, XJ.(2017).Enhanced driving force and charge separation efficiency in disordered SnNbxOy: Boosting photocatalytic activity toward water reduction.CHEMICAL ENGINEERING JOURNAL,309,313-320. |
| MLA | Huang, SS,et al."Enhanced driving force and charge separation efficiency in disordered SnNbxOy: Boosting photocatalytic activity toward water reduction".CHEMICAL ENGINEERING JOURNAL 309(2017):313-320. |
入库方式： OAI收割
来源：上海应用物理研究所
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。