典型文献
The self-assembly of gold nanoparticles in large-pore ordered mesoporous carbons
文献摘要：
Simple encapsulation of 3 nm gold nanoparticles in ordered mesoporous carbon with large pores of 17 nm and thick pore walls of 16 nm was achieved by a metal-ligand coordination assisted-self-assembly approach.Polystyrene-block-polyethylene-oxide (PS-b-PEO) diblock copolymer with a large molecular weight of the PS chain and mercaptopropyltrimethoxysilane were used as the template and the metal ligand,respectively.Small-angle X-ray scattering,X-ray diffraction,transmission electron microscopy,and X-ray photoelectron spectroscopy showed that monodispersed aggregation-free gold nanoparticles approximately 3 nm in size were partially embedded in the large open pore structure of the ordered mesoporous carbon.The strong coordination between the gold species and the mercapto groups and the thick porous walls increased the dispersion of the gold nanoparticles and essentially inhibited particle aggregation at 600 ℃.The gold nanoparticles in the ordered mesoporous carbon are active and stable in the reduction of nitroarenes involving bulky molecules using sodium borohydride as a reducing agent under ambient conditions (30 ℃) in water.The large interconnected pore structure facilitates the mass transfer of bulky molecules.
文献关键词：
中图分类号：
作者姓名：
Chun Pei;Shangjun Chen;Rongrong Song;Fei Lv;Ying Wan
作者机构：
Key Laboratory of Resource Chemistry of Ministry of Education,Shanghai Key Laboratory of Rare Earth Functional Materials,and Department of Chemistry,Shanghai Normal University,Shanghai 200234,China
文献出处：
引用格式：
[1]Chun Pei;Shangjun Chen;Rongrong Song;Fei Lv;Ying Wan-.The self-assembly of gold nanoparticles in large-pore ordered mesoporous carbons)[J].中国化学工程学报（英文版）,2022(01):420-429
A类：
mercaptopropyltrimethoxysilane,mercapto
B类：
self,assembly,gold,nanoparticles,large,ordered,mesoporous,carbons,Simple,encapsulation,pores,thick,walls,was,achieved,by,metal,ligand,coordination,assisted,approach,Polystyrene,polyethylene,oxide,PS,PEO,diblock,copolymer,molecular,weight,chain,were,used,template,respectively,Small,angle,ray,scattering,diffraction,transmission,microscopy,photoelectron,spectroscopy,showed,that,monodispersed,aggregation,free,approximately,size,partially,embedded,open,structure,strong,between,species,groups,increased,dispersion,essentially,inhibited,active,stable,reduction,nitroarenes,involving,bulky,molecules,using,sodium,borohydride,reducing,agent,under,ambient,conditions,water,interconnected,facilitates,mass,transfer
AB值：
0.539243
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