Unraveling the mystery of stober silica's microporosity
文献类型：期刊论文
| 作者 | Li, Shanshan1,2,3; Wan, Quan1; Qin, Zonghua1; Fu, Yuhong1,2; Gu, Yuantao1,2 |
| 刊名 | Langmuir
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 32期号:36页码:9180-9187 |
| ISSN号 | 0743-7463 |
| DOI | 10.1021/acs.langmuir.6b02472 |
| 通讯作者 | Wan, quan(wanquan@vip.gyig.ac.cn) |
| 英文摘要 | Puzzling aspects of the microporous structure of stober silica, including inconsistencies in the bet specific surface area and the long measurement time required for n-2 adsorption, hinder further research on and potential applications of this material. in this work, stober silica samples prepared using systematic and detailed post-treatment methods were characterized by n-2 adsorption, scanning electron microscopy, transmission electron microscopy, inductively coupled plasma optical emission spectrometry, elemental analysis, and fourier transform infrared spectroscopy. we have found that the often overlooked sample preparation conditions may be the main causes that perplex the gas adsorption characterization results of stober silica samples. the pore-blocking processes associated with a variety of sample treatment methods are discussed in detail. strong evidence for the particle growth model and pore-blocking mechanism involving ethoxyl groups, si species, and condensation of silanols is provided. a remarkable result is that the measurement time is shortened from 1 month in our previous work to 2-3 days for samples with large specific surface areas. a suitable post-treatment condition is recommended to obtain microporous stober silica with a short measurement time, including water washing, low temperature drying without a vacuum, and a short storage time. |
| WOS关键词 | MONODISPERSE ; PARTICLES ; SIZE ; SPHERES ; NANOPARTICLES ; MOLECULE ; DENSITY ; SIO2 |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Multidisciplinary ; Chemistry, Physical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000383318100008 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375940 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wan, Quan |
| 作者单位 | 1.Chinese Acad Sci, Inst Geochem, State Key Lab Ore Deposit Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Guizhou Normal Univ, Sch Chem & Mat Sci, Guiyang 550001, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shanshan,Wan, Quan,Qin, Zonghua,et al. Unraveling the mystery of stober silica's microporosity[J]. Langmuir,2016,32(36):9180-9187. |
| APA | Li, Shanshan,Wan, Quan,Qin, Zonghua,Fu, Yuhong,&Gu, Yuantao.(2016).Unraveling the mystery of stober silica's microporosity.Langmuir,32(36),9180-9187. |
| MLA | Li, Shanshan,et al."Unraveling the mystery of stober silica's microporosity".Langmuir 32.36(2016):9180-9187. |
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来源：中国科学院大学
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