Potassium Hydroxide Concentration-Dependent Water Structure on the Quartz Surface Studied by Combining Sum-Frequency Generation (SFG) Spectroscopy and Molecular Simulations
文献类型：期刊论文
| 作者 | Lyu, Yeqing2; Wang, Yaru1,2; Wang, Shaona2; Liu, Biao2; Du, Hao1,2 |
| 刊名 | LANGMUIR
 |
| 出版日期 | 2019-09-10 |
| 卷号 | 35期号:36页码:11651-11661 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/acs.langmuir.9b01781 |
| 英文摘要 | Vibrational sum-frequency generation (SFG) spectroscopy and molecular simulations were used to investigate the molecular structures at the quartz surface, and the influence of bulk potassium hydroxide concentration was systematically examined. It was found that when the potassium hydroxide concentration was less than 10(-2) M, the structure of water molecules at the quartz surface was dependent on the quartz surface potential as evidenced by the increase of SFG signal as a function of the alkaline concentration. However, when the alkaline concentration was more than 10( )(-2)M, a monotonic decrease of interfacial water SFG spectra intensity was observed, which has been proposed to be due to the decreased number of interfacial water molecules and proton disordering caused by the screening effect originated from the adsorption of cations. Furthermore, besides the typical hydrogen-bonded interfacial water peaks (3200 and 3400 cm(-1)), the quartz/H2O interface showed an additional red-shifted peak centered at similar to 2930 cm(-1). The results of SFG spectra and chemistry calculations confirmed that the red-shifted vibrational peak was due to the O-H stretch vibration of water molecules strongly hydrogen bonded with the OH- adsorbed at the surface. |
| WOS关键词 | HYDROGEN-PEROXIDE MOLECULES ; VIBRATIONAL-SPECTRA ; SILICA ; INTERFACE ; ADSORPTION ; DYNAMICS ; RANGE ; PH ; IONS |
| 资助项目 | National Natural Science Foundation of China[91634111] ; National Natural Science Foundation of China[51774261] ; Sino-German Collaboration Project[51761135108] |
| WOS研究方向 | Chemistry ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000485831500005 |
| 出版者 | AMER CHEMICAL SOC |
| 资助机构 | National Natural Science Foundation of China ; Sino-German Collaboration Project |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/30861]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Du, Hao |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lyu, Yeqing,Wang, Yaru,Wang, Shaona,et al. Potassium Hydroxide Concentration-Dependent Water Structure on the Quartz Surface Studied by Combining Sum-Frequency Generation (SFG) Spectroscopy and Molecular Simulations[J]. LANGMUIR,2019,35(36):11651-11661. |
| APA | Lyu, Yeqing,Wang, Yaru,Wang, Shaona,Liu, Biao,&Du, Hao.(2019).Potassium Hydroxide Concentration-Dependent Water Structure on the Quartz Surface Studied by Combining Sum-Frequency Generation (SFG) Spectroscopy and Molecular Simulations.LANGMUIR,35(36),11651-11661. |
| MLA | Lyu, Yeqing,et al."Potassium Hydroxide Concentration-Dependent Water Structure on the Quartz Surface Studied by Combining Sum-Frequency Generation (SFG) Spectroscopy and Molecular Simulations".LANGMUIR 35.36(2019):11651-11661. |
入库方式： OAI收割
来源：过程工程研究所
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