Construction of controllable size silver nanoparticles immobilized on nanofibers of chitin microspheres via green pathway
文献类型：期刊论文
| 作者 | Guo, Lin1,2; Duan, Bo2; Zhang, Lina2 |
| 刊名 | NANO RESEARCH
 |
| 出版日期 | 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 |
| WOS记录号 | WOS:000378523300026 |
| 出版者 | TSINGHUA UNIV PRESS |
| 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. |
入库方式： OAI收割
来源：大连化学物理研究所
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