Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway

doi:10.1007/s12274-016-1104-z

	Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway
	Guo, Lin 1,2; Duan, Bo 2; Zhang, Lina 2
刊名	NANO RESEARCH
	2016-07-01
卷号	9 期号:7 页码:2149-2161
关键词	Chitin Microsphere Nanofibers Immobilization Of Silver Nanoparticles Selective Epoxidation Controllable Nano-size
ISSN号	1998-0124
DOI	10.1007/s12274-016-1104-z
文献子类	Article
英文摘要	In the present work, nanofibrous chitin microsphere (NCM) was prepared via sol-gel transition from a chitin solution dissolved in a NaOH/urea aqueous system at low temperatures. Ag nanoparticles (AgNPs) were synthesized via an in situ reduction of silver nitrate using trisodium citrate dehydrate and were immobilized on chitin nanofibers to obtain composite microspheres that consist of nanofibers and AgNPs (NCM-Ag). The size of AgNPs could be controlled in the range of 10 to 70 nm, depending on the concentration of AgNO3. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FT-IR) analyses showed that the chitin nanofibers have a strong affinity toward AgNPs, resulting from the interaction between the acetamino group of chitin and the AgNPs. The NCM-Ag exhibited a perfect nanoporous structure and high surface area, as well as high stability in organic solvents. Moreover, in the catalytic epoxidation of olefin (particularly, the conversion of styrene to styrene epoxide), NCM-Ag exhibited an excellent selectivity of up to 90%. Converting chitin powder into chitin microspheres using an environmentally friendly technique is a green process, which is beneficial for the large-scale synthesis of industrial products. More importantly, this work provides a green synthetic pathway for the construction of size-controlled noble metal nanoparticles immobilized on nanofiber support, which have a wide range of potential applications.
WOS关键词	ETHYLENE EPOXIDATION CATALYSTS ; NAOH/UREA AQUEOUS-SOLUTION ; ONE-POT SYNTHESIS ; HYDROGEN-PEROXIDE ; EFFICIENT EPOXIDATION ; SELECTIVE OXIDATION ; MOLECULAR-OXYGEN ; AG NANOPARTICLES ; FACILE SYNTHESIS ; CELLULOSE
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	TSINGHUA UNIV PRESS
WOS记录号	WOS:000378523300026
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170500]
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
通讯作者	Zhang, Lina
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Guo, Lin,Duan, Bo,Zhang, Lina. Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway[J]. NANO RESEARCH,2016,9(7):2149-2161.
APA	Guo, Lin,Duan, Bo,&Zhang, Lina.(2016).Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway.NANO RESEARCH,9(7),2149-2161.
MLA	Guo, Lin,et al."Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway".NANO RESEARCH 9.7(2016):2149-2161.