Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan
文献类型：期刊论文
| 作者 | Yang, Ying1; Yang, Feng1; Zeng, Dehong1; Huang, Zulin1; Zhang, Jiping1; Hao, Shijie1; Kong, Xiangguang1; Zhang, Zongbo2; Liu, Baijun1 |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2018-12-01 |
| 卷号 | 531页码:291-299 |
| 关键词 | Hollow Mesoporous Carbon Sphere Chitosan Au Nanocrystal Yolk-structure 4-nitropheol Methylene Blue |
| ISSN号 | 0021-9797 |
| DOI | 10.1016/j.jcis.2018.07.063 |
| 英文摘要 | To realize surfactant-free synthesis of biomass-derived hollow mesoporous carbon spheres and their derivatives, choice of synthetic methodology and carbon precursor is crucial. Herein, a brand-new hollow mesoporous carbon sphere (HMCS) is first synthesized from 8-quinolinol modified chitosan via an in situ stober templating approach without surfactant followed by pyrolysis and alkali washing. The resultant HMCS is uniform, and shows a cavity size of 417 nm, a shell thickness of 5 nm, and a narrow mesopore size distribution centered at 3.9 nm. The HMCS is then upgraded by encapsulation of a single Au nanocrystal (NC) into the void of HMCS to form a yolk-shell architecture, YS-Au@HMCS. Its cavity size and shell thickness are decreased to 187 and 3 nm, while the mesopore size is increased to 4.3 nm, the surface area (215 m(2) g(-1)) and mesoporosity (74.7%) are triple and twice that of HMCS, respectively, just by halving the delay time of carbon source addition. Owing to the unique hollow interiors and mesopores, as well as their synergism with the encapsulated Au NCs, the elaborately fabricated YS-Au@HMCS exhibits appealing catalytic performances towards the deposal of sewage. It delivers a large activity factor of 34.32, 13.29 and 0.05 s(-1) g(-1) in the reduction of 4-nitrophenol and methylene blue using sodium borohydride, and in the photodegradation of methylene blue under visible light irradiation, respectively. These advances shed new light on the synthesis of hollow mesoporous carbon spheres and the designed synthesis of functional carbon materials with versatile applications. (C) 2018 Elsevier Inc. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000444067300032 |
| 出版者 | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/41901]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, Ying; Zhang, Zongbo; Liu, Baijun |
| 作者单位 | 1.China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China 2.Chinese Acad Sci, Inst Chem, Res Educ Ctr Excellence Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Ying,Yang, Feng,Zeng, Dehong,et al. Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2018,531:291-299. |
| APA | Yang, Ying.,Yang, Feng.,Zeng, Dehong.,Huang, Zulin.,Zhang, Jiping.,...&Liu, Baijun.(2018).Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan.JOURNAL OF COLLOID AND INTERFACE SCIENCE,531,291-299. |
| MLA | Yang, Ying,et al."Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan".JOURNAL OF COLLOID AND INTERFACE SCIENCE 531(2018):291-299. |
入库方式： OAI收割
来源：化学研究所
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