Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2

	Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2
	Xu, Qin-Qin 1; Ma, Yu-Ling 1; Gang-Xu 1; Yin, Jian-Zhong 1; Wang, Ai-Qin 2; Gao, Jin-Ji 1
刊名	journal of supercritical fluids
	2014-08-01
卷号	92 页码:100-106
关键词	Supercritical CO2 Ag nanowires Ethylene glycol Non-equilibrium sorption
英文摘要	well-defined ag nanowires were obtained in sba-15 at a short deposition time of 5 min in supercritical co2 when adding a small amount of ethylene glycol as the co-solvent. ethylene glycol played a key role in dictating the nanowire morphology. through detailed investigation of the whole deposition process, including the dissolution of precursor assisted by the co-solvent, the diffusion properties of the precursor into the nano-scale channels of the substrate, and the interaction between the precursor and the substrate, we found that a small amount of precursors were reduced into ag-0 by ethylene glycol at the initial stage of the deposition. the resultant ag-0 then acted as nuclei leading to a non-equilibrium sorption of the precursor. the rapid adsorption of the precursor onto the substrate resulted in a high loading of ag in a short deposition time and the formation of nanowire morphology. furthermore, this method was successfully extended to other porous substrates such as gamma-al2o3, sio2 and kit-6, demonstrating its great potentials in the synthesis of nanocomposites. (c) 2014 elsevier b.v. all rights reserved.
WOS标题词	science & technology ; physical sciences ; technology
类目[WOS]	chemistry, physical ; engineering, chemical
研究领域[WOS]	chemistry ; engineering
关键词[WOS]	equation-of-state ; carbon-dioxide ; mesoporous silica ; fluid deposition ; silver nanostructures ; nanoparticles ; nanowires ; nanocomposites ; nanocrystals ; nanotubes
收录类别	SCI
语种	英语
WOS记录号	WOS:000341559500013
公开日期	2016-05-09
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/145586]
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, Sch Chem Machinery, State Key Lab Fine Chem, Dalian 116024, Liao Ning Provi, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Xu, Qin-Qin,Ma, Yu-Ling,Gang-Xu,et al. Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2[J]. journal of supercritical fluids,2014,92:100-106.
APA	Xu, Qin-Qin,Ma, Yu-Ling,Gang-Xu,Yin, Jian-Zhong,Wang, Ai-Qin,&Gao, Jin-Ji.(2014).Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2.journal of supercritical fluids,92,100-106.
MLA	Xu, Qin-Qin,et al."Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2".journal of supercritical fluids 92(2014):100-106.