Enhanced tetracycline adsorption using alginate-graphene-ZIF67 aerogel

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Enhanced tetracycline adsorption using alginate-graphene-ZIF67 aerogel
	Kong, Yan; Zhuang, Yuan; Han, Kun; Shi, Baoyou
刊名	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
	2020-03-05
卷号	588 页码:1-12
关键词	Alginate Graphene MOF Tetracycline
ISSN号	0927-7757
英文摘要	Growing efforts have been focused on synthesis MOF particles into aerogels for water treatment. Here, an alginate-graphene matrix with rich oxygen-containing functional groups was formed into a hydrogel (AG-Co) through Co2+ coordination, and then the Co2+ in AG-Co acted as metal nucleation sites for the in situ growth of ZIF-67 crystals to prepare alginate-graphene-ZIF67 (AG-ZIF). Using the alginate-graphene as a substrate greatly overcame the disadvantage of excessive growth, easy aggregation, and difficulty in recycle the ZIF-67 crystal powder, which also resulted in a smaller size and highly dispersed ZIF-67 crystal on the substrate. The interaction between the alginic acid chain and GO became stronger, and the alginate also prevented GO from aggregation. The BET surface areas of the AG-Co and AG-ZIF were 26.52 m(2)/g and 138.62 m(2)/g, respectively. For tetracycline removal, the maximum adsorption capacities by AG-Co and AG-ZIF were 105.49 and 456.62 mg/g, respectively. We deduced that the adsorption site on the surface of the AG-ZIF was nonuniform with multilayer adsorption characteristics, which may be mainly due to the difference in adsorption sites including ZIF crystals and oxygen-containing functional groups on the alginic acid chain and GO in AG-ZIF. The tetracycline adsorption on AG-ZIF was proven to rely on the pi-pi interaction and the cation-pi bond. After 6 cycles, the AG-ZIF aerogel still exhibited a high adsorption capacity and good reusability.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45291]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Kong, Yan,Zhuang, Yuan,Han, Kun,et al. Enhanced tetracycline adsorption using alginate-graphene-ZIF67 aerogel[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2020,588:1-12.
APA	Kong, Yan,Zhuang, Yuan,Han, Kun,&Shi, Baoyou.(2020).Enhanced tetracycline adsorption using alginate-graphene-ZIF67 aerogel.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,588,1-12.
MLA	Kong, Yan,et al."Enhanced tetracycline adsorption using alginate-graphene-ZIF67 aerogel".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 588(2020):1-12.