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题名: Synthesis of CuO/SBA-15 nanocomposite in ternary system of CO2, inorganic salt and co-solvent
作者: Qiao, Guo-Yue1;  Xu, Qin-Qin1;  Yin, Jian-Zhong1;  Wang, Ai-Qin2;  Xu, Gang1
关键词: Supercritical CO2 ;  CuO ;  Mesoporous silica ;  Controllable synthesis ;  Co-solvent
刊名: JOURNAL OF SUPERCRITICAL FLUIDS
发表日期: 2017-10-01
DOI: 10.1016/j.supflu.2017.05.004
卷: 128, 页:18-25
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Highly dispersed CuO nanoparticles were successfully synthesized within mesoporous silica in supercritical CO2 using inorganic Cu precursors. Co-solvent and deposition time were found to have significant influence on the metal loading and the morphology of the nanophase. The agglomerates of nanoparticle outside the SBA-15 channels were obtained, whose size were about 20-80 nm, when ethanol, 1,3 propylene glycol and n-butyl alcohol were used as co-solvent, although the inorganic precursor has large solubility in them. When ethylene glycol was used as co-solvents, large amounts of continuous nanowires were found inside the SBA-15 channels. However, when the mixture of ethylene glycol and water were used as co-solvent, short nanorods or even nanoparticles were found instead. It indicates that the role of the co-solvent may have many aspects, such as enhancement of the precursor dissolution, change of the interaction between the precursor and the substrates and so on. In addition, it was found that a larger amount of co-solvent had negative effect on the metal loading, mainly due to the phase separation of the ternary system of supercritical CO2, co-solvent and inorganic precursors.
关键词[WOS]: SUPERCRITICAL CARBON-DIOXIDE ;  DISPERSED SILVER NANOPARTICLES ;  DOUBLE SOLVENT TECHNIQUE ;  FLUID DEPOSITION ;  MESOPOROUS SILICA ;  CATALYTIC PERFORMANCE ;  OXIDE ;  COPPER ;  NANOSTRUCTURES ;  COMPOSITES
语种: 英语
WOS记录号: WOS:000408287400003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/149877
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Daliarz Univ Technol, Sch Chem Machinery, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Qiao, Guo-Yue,Xu, Qin-Qin,Yin, Jian-Zhong,et al. Synthesis of CuO/SBA-15 nanocomposite in ternary system of CO2, inorganic salt and co-solvent[J]. JOURNAL OF SUPERCRITICAL FLUIDS,2017,128:18-25.
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