Systematical study of depositing nanoparticles and nanowires in mesoporous silica using supercritical carbon dioxide and co-solvents: morphology control, thermodynamics and kinetics of adsorption
文献类型：期刊论文
| 作者 | Xu, Qin-qin1; Wang, Ya-qiong1,2; Wang, Ai-qin3; Yin, Jian-zhong1; Yu-Liu4 |
| 刊名 | nanotechnology
 |
| 出版日期 | 2012-07-20 |
| 卷号 | 23期号:28 |
| 英文摘要 | agno3 was successfully deposited into mesoporous silica including sba-15 and kit-6 using supercritical carbon dioxide as the solvent, ethanol or a mixture of ethanol and ethylene glycol as the co-solvent, followed by calcination after depressurization. a large number of experiments were conducted to find out the most important parameters influencing the metal loading and the morphology of the nanostructure. the morphology was found to vary a lot according to the deposition time, which is interesting, i.e. small nanoparticles, short nanorods, continuous nanowires, and big nanoparticles appeared in succession as the deposition time increased. besides, the co-solvent was also found to influence significantly the deposition results. the samples prepared using the mixture of ethanol and ethylene glycol as the co-solvent presented the morphology of nanowires, while those prepared using only ethanol as the co-solvent presented a mixed morphology of both nanoparticles and nanowires. the role of ethylene glycol was discussed and a mechanism model demonstrating the formation of ag nanowires or nanoparticles was proposed. finally, the adsorption of agno3 (adsorbate) from supercritical carbon dioxide and co-solvent (solvent) on the sba-15 support (adsorbent) was investigated by both experimental and simulating methods. it was found that the adsorption isotherm was well fitted by the langmuir model, and the kinetic investigation based on a mass differential equation showed that the adsorption reached equilibrium after 10 000 s (about 2.8 h) which was consistent with our experimental result (2.5 h). |
| WOS标题词 | science & technology ; technology ; physical sciences |
| 类目[WOS] | nanoscience & nanotechnology ; materials science, multidisciplinary ; physics, applied |
| 研究领域[WOS] | science & technology - other topics ; materials science ; physics |
| 关键词[WOS] | fluid deposition ; copper nanoparticles ; activated carbon ; films ; nanostructures ; desorption ; reduction ; nanotubes ; oxidation ; nanorods |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000305972600006 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/143042]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Dalian Univ Technol, State Key Lab Fine Chem, Sch Chem Machinery, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 4.Dalian Univ Technol, Sch Energy & Power Engn, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Qin-qin,Wang, Ya-qiong,Wang, Ai-qin,et al. Systematical study of depositing nanoparticles and nanowires in mesoporous silica using supercritical carbon dioxide and co-solvents: morphology control, thermodynamics and kinetics of adsorption[J]. nanotechnology,2012,23(28). |
| APA | Xu, Qin-qin,Wang, Ya-qiong,Wang, Ai-qin,Yin, Jian-zhong,&Yu-Liu.(2012).Systematical study of depositing nanoparticles and nanowires in mesoporous silica using supercritical carbon dioxide and co-solvents: morphology control, thermodynamics and kinetics of adsorption.nanotechnology,23(28). |
| MLA | Xu, Qin-qin,et al."Systematical study of depositing nanoparticles and nanowires in mesoporous silica using supercritical carbon dioxide and co-solvents: morphology control, thermodynamics and kinetics of adsorption".nanotechnology 23.28(2012). |
入库方式： OAI收割
来源：大连化学物理研究所
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