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Comprehensive study of the role of ethylene glycol when preparing Ag@SBA-15 in supercritical CO2
Xu, Qin-Qin1; Ma, Yu-Ling1; Gang-Xu1; Yin, Jian-Zhong1; Wang, Ai-Qin2; Gao, Jin-Ji1
KeywordSupercritical Co2 Ag Nanowires Ethylene Glycol Non-equilibrium Sorption
Source PublicationJOURNAL OF SUPERCRITICAL FLUIDS
2014-08-01
DOI10.1016/j.supflu.2014.05.007
Volume92Pages:100-106
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Engineering, Chemical
WOS Research AreaChemistry ; Engineering
WOS KeywordEQUATION-OF-STATE ; CARBON-DIOXIDE ; MESOPOROUS SILICA ; FLUID DEPOSITION ; SILVER NANOSTRUCTURES ; NANOPARTICLES ; NANOWIRES ; NANOCOMPOSITES ; NANOCRYSTALS ; NANOTUBES
AbstractWell-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.
Language英语
WOS IDWOS:000341559500013
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/145586
Collection中国科学院大连化学物理研究所
Affiliation1.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
Recommended Citation
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.
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