DOI: 10.1016/j.jcou.2013.11.003
Scopus记录号: 2-s2.0-84891590972
论文题名: Incorporation of Cu, Fe, Ag, and Au nanoparticles in mercapto-silica (MOS) and their CO2 adsorption capacities
作者: Khdary N.H. ; Ghanem M.A. ; Merajuddine M.G. ; Bin Manie F.M.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2014
卷: 5 起始页码: 17
结束页码: 23
语种: 英语
英文关键词: CO2 sequestration
; Metal nanoparticles
; Metal-organic-silica (MOS)
Scopus关键词: Adsorption capacities
; Concentrated solution
; Metal-organic-silica (MOS)
; Physicochemical property
; Preparation procedures
; Silica nanocomposites
; Sodium boro hydrides
; Surface chemical modifications
; Adsorption
; Carbon dioxide
; Chemical modification
; Composite materials
; Functional groups
; Gold
; Greenhouse gases
; Iron compounds
; Metal complexes
; Metal ions
; Metal nanoparticles
; Metals
; Nanocomposites
; Silica
; Transmission electron microscopy
; Silver
英文摘要: Metal-organic-silica (MOS) nanocomposites of metal nanoparticles of copper, iron, silver, and gold are incorporated into mercaptopropyl-modified silica by surface chemical modification methods. A silica surface modified with mercaptopropyl functional groups (MP-S) was treated with a concentrated solution of metal salts to form metal complex-mercaptopropyl-silica composites (Cu 2+-MP-S, Fe3+-MP-S, Ag1+-MP-S, Au 3+-MP-S). The metal nanoparticle silica nanocomposites (Cu-MP-S, Fe-MP-S, Ag-MP-S, and Au-MP-S) were obtained by the chemical reduction of immobilized metal ions using sodium borohydride. The nanocomposites' physicochemical properties were investigated by CHN elemental analysis, FTIR, TGA, EDAX, and transmission electron microscopy. Cu, Fe, Ag, and Au nanoparticles showed a uniform dispersion through the silica support with diameters ranging from 3 nm to 200 nm. The CO2 adsorption capacities for metal ions and nanoparticle nanocomposites have considerably increased by 20% and 100%, respectively. Cu-MP-S shows the maximum capacity of 0.52 mmol/g as measured by TGA analysis. In addition, the preparation procedure is favorable for the synthesis of a variety of metal-silica composites for their potential application in greenhouse gas sequestration. © 2013 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/52999
Appears in Collections: 影响、适应和脆弱性
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Recommended Citation:
Khdary N.H.,Ghanem M.A.,Merajuddine M.G.,et al. Incorporation of Cu, Fe, Ag, and Au nanoparticles in mercapto-silica (MOS) and their CO2 adsorption capacities[J]. Journal of CO2 Utilization,2014-01-01,5