Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan

doi:10.1016/j.jcis.2018.07.063

CORC > 化学研究所 > 中国科学院化学研究所

	Surfactant-free synthesis of hollow mesoporous carbon spheres and their encapsulated Au derivatives using biopolymeric chitosan
	Yang, Ying 1; Yang, Feng 1; Zeng, Dehong 1; Huang, Zulin 1; Zhang, Jiping 1; Hao, Shijie 1; Kong, Xiangguang 1; Zhang, Zongbo 2; Liu, Baijun 1
刊名	JOURNAL OF COLLOID AND INTERFACE SCIENCE
	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
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000444067300032
内容类型	期刊论文
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.