Engineered phosphorous-functionalized biochar with enhanced porosity using phytic acid-assisted ball milling for efficient and selective uptake of aquatic uranium

doi:10.1016/j.molliq.2020.112659

	Engineered phosphorous-functionalized biochar with enhanced porosity using phytic acid-assisted ball milling for efficient and selective uptake of aquatic uranium
	Zhou, Yuanbiao 1,2; Xiao, Jiang 3; Hu, Rui 1,2; Wang, Tianhui 1,2; Shao, Xuelian 1,2; Chen, Guangcai 3; Chen, Lin 1,2; Tian, Xingyou 1,2
刊名	JOURNAL OF MOLECULAR LIQUIDS
	2020-04-01
卷号	303
关键词	Phosphorous surface modification Ball-milling treatment Enhanced pore structure Selective U(VI) extraction
ISSN号	0167-7322
DOI	10.1016/j.molliq.2020.112659
通讯作者	Hu, Rui(ruihu@rntek.cas.cn) ; Tian, Xingyou(xytian@issp.ac.cn)
英文摘要	The efficient extraction of uranium is challenging for radioactive wastewater treatment. Concerning to the specific coordination of functional groups with radionuclides, the development of ideal sorbents with high surface area, enhanced porosity and abundant functional groups compatibly to uptake uranium selectively is of great significance. Biochar, an attractive material to concentration aquatic targets, exhibits a positive correlation of surface area and pore volume of biochars with pyrolysis temperature, whereas a negative relation of surface functionality with thermolysis temperature. Here we applied a facile and environmental-friendly ball-milling technique to engineer raw biochars in the presence of phytic acid. Ball-milling treatment increased the external surface area of biochars by reducing grain sizes, as well as enhanced the micropore surface area by exposing blocked micropore networks. P-containing moiety was grafted to the surface of biochar matrix successfully. The physicochemical characteristics of biochars enabled a high uptake capacity (128.5 mg/g) and favorable selectivity of U(VI). It suggested that ball-milling of raw biochars with activating solvents could achieve an excellent performance for the efficient concentration of aquatic uranium. (C) 2020 Elsevier B.V. All rights reserved.
资助项目	CAS Pioneer Hundred Talents Program ; CASHIPS Director's Fund, China[YZJJ2018QN20] ; National Natural Science Foundation of China[21875257] ; China Postdoctoral Science Foundation[2018M640200] ; China Postdoctoral Science Foundation[2019T120154]
WOS关键词	MILLED BIOCHAR ; REMOVAL ; RECOVERY ; CARBON ; ADSORPTION ; WASTE ; OXIDE ; COMPOSITES ; SORPTION ; WATER
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000533612700042
资助机构	CAS Pioneer Hundred Talents Program ; CASHIPS Director's Fund, China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103311]
专题	中国科学院合肥物质科学研究院
通讯作者	Hu, Rui; Tian, Xingyou
作者单位	1.Chinese Acad Sci, Inst Appl Technol, Hefei Inst Phys Sci, Hefei 230088, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 3.Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Yuanbiao,Xiao, Jiang,Hu, Rui,et al. Engineered phosphorous-functionalized biochar with enhanced porosity using phytic acid-assisted ball milling for efficient and selective uptake of aquatic uranium[J]. JOURNAL OF MOLECULAR LIQUIDS,2020,303.
APA	Zhou, Yuanbiao.,Xiao, Jiang.,Hu, Rui.,Wang, Tianhui.,Shao, Xuelian.,...&Tian, Xingyou.(2020).Engineered phosphorous-functionalized biochar with enhanced porosity using phytic acid-assisted ball milling for efficient and selective uptake of aquatic uranium.JOURNAL OF MOLECULAR LIQUIDS,303.
MLA	Zhou, Yuanbiao,et al."Engineered phosphorous-functionalized biochar with enhanced porosity using phytic acid-assisted ball milling for efficient and selective uptake of aquatic uranium".JOURNAL OF MOLECULAR LIQUIDS 303(2020).