Ball milling synthesis of covalent organic framework as a highly active photocatalyst for degradation of organic contaminants

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境化学与生态毒理学国家重点实验室

	Ball milling synthesis of covalent organic framework as a highly active photocatalyst for degradation of organic contaminants
	Lv, Hongzhou ; Zhao, Xiaoli ; Niu, Hongyun ; He, Sijing ; Tang, Zhi ; Wu, Fengchang ; Giesy, John P.
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2019-05-05
卷号	369 页码:494-502
关键词	Covalent organic framework Mechanochemical fabrication Ball milling TpMA Photocatalysis
ISSN号	0304-3894
英文摘要	Facile, environmentally-friendly fabrication of high-yield and stable covalent organic framework (COF) materials has been a limitation to their large-scale production and application. In this work, ball milling was used to synthesize COF by mechanochemical reaction between 1,3,5-triformylphloroglucinol (Tp) and melamine (MA) at ambient temperature. Different routes (liquid-free, solvent-assisted and catalyst-assisted) and proportions of liquids (solvents or catalyst) were investigated. Two morphologies were obtained when various amounts of liquid were added during grinding. The two forms were interwoven thread-shaped and exfoliative thin ribbon-like structures. Further, visible light photocatalytic (lambda > 400 nm) performance and mechanism of the two structures of COFs were investigated. The exfoliative ribbon-like structures exhibited greater rates of photodegradation of phenol and retained 87.6% of initial photodegradation after being used four times. Addition of liquid catalyst not only improved crystallinity of the COF materials, but also enhanced rates of photocatalytic reactions. Photocatalytic activity of the exfoliative structure of TpMA synthesized by ball milling was comparable with that of the photocatalyst prepared by use of the solvothermal method, while time to prepare the catalyst was shortened by 36-fold and the amount of solvent used was reduced by 8-fold at room temperature. Mechanochemical synthesis is a promising potential tool for large-scale production of COFs, which will make greater use of COFs for degradation of pollutants.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42906]
专题	生态环境研究中心_环境化学与生态毒理学国家重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China 2.Univ Saskatchewan, Toxicol Ctr, Saskatoon, SK, Canada 3.Univ Saskatchewan, Dept Vet Biomed Sci, Saskatoon, SK, Canada 4.Hohai Univ, Coll Environm, Nanjing 210098, Jiangsu, Peoples R China 5.Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Lv, Hongzhou,Zhao, Xiaoli,Niu, Hongyun,et al. Ball milling synthesis of covalent organic framework as a highly active photocatalyst for degradation of organic contaminants[J]. JOURNAL OF HAZARDOUS MATERIALS,2019,369:494-502.
APA	Lv, Hongzhou.,Zhao, Xiaoli.,Niu, Hongyun.,He, Sijing.,Tang, Zhi.,...&Giesy, John P..(2019).Ball milling synthesis of covalent organic framework as a highly active photocatalyst for degradation of organic contaminants.JOURNAL OF HAZARDOUS MATERIALS,369,494-502.
MLA	Lv, Hongzhou,et al."Ball milling synthesis of covalent organic framework as a highly active photocatalyst for degradation of organic contaminants".JOURNAL OF HAZARDOUS MATERIALS 369(2019):494-502.