Highly Porous Core-Shell Structured Graphene-Chitosan Beads

doi:10.1021/acsami.5b03369

CORC > 北京大学 > 工学院

	Highly Porous Core-Shell Structured Graphene-Chitosan Beads
	Ouyang, An ; Wang, Chunhui ; Wu, Shiting ; Shi, Enzheng ; Zhao, Wenqi ; Cao, Anyuan ; Wu, Dehai
刊名	ACS APPLIED MATERIALS & INTERFACES
	2015
关键词	graphene chitosan core-shell beads freeze-casting methyl orange adsorption CHITOSAN/GRAPHENE OXIDE METHYLENE-BLUE DYE ADSORPTION METAL-IONS FABRICATION COMPOSITES SORPTION FILMS NANOCOMPOSITES ARCHITECTURES
DOI	10.1021/acsami.5b03369
英文摘要	Graphene oxide (GO) sheets have been assembled into various three-dimensional porous structures and composites, with potential applications in energy and environmental areas. Here, we show the combination of GO and chitosan (CTS) into inorganic-organic heterocomposites as similar to 3 mm diameter core shell beads with controlled microstructure. The spherical GO-CTS beads, made by a two-step freeze-casting method, consist of a GO core wrapped by a CTS shell with abrupt interface; both parts have high porosities (94-96%) and mesopores volume (0.246 cm(3)/g) yet with different pore morphologies. Incorporation of a GO core into the CTS beads significantly improved the methyl orange adsorption capacity (353 mg/g at 318 K) compared with pure CTS beads. Key factors such as the pH value, adsorbent dosage, concentration, time, and temperature have been studied in detail, whereas adsorption isotherm and kinetic studies reveal a Langmuir model following the pseudo-second order.; National Natural Science Foundation of China (NSFC) [51325202]; SCI(E); EI; PubMed; ARTICLE; anyuan@pku.edu.cn; wdh_thu@foxmail.com; 26; 14439-14445; 7
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/418544]
专题	工学院
推荐引用方式 GB/T 7714	Ouyang, An,Wang, Chunhui,Wu, Shiting,et al. Highly Porous Core-Shell Structured Graphene-Chitosan Beads[J]. ACS APPLIED MATERIALS & INTERFACES,2015.
APA	Ouyang, An.,Wang, Chunhui.,Wu, Shiting.,Shi, Enzheng.,Zhao, Wenqi.,...&Wu, Dehai.(2015).Highly Porous Core-Shell Structured Graphene-Chitosan Beads.ACS APPLIED MATERIALS & INTERFACES.
MLA	Ouyang, An,et al."Highly Porous Core-Shell Structured Graphene-Chitosan Beads".ACS APPLIED MATERIALS & INTERFACES (2015).