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Direct Synthesis of Bacteria-Derived Carbonaceous Nanofibers as a Highly Efficient Material for Radionuclides Elimination

文献类型：期刊论文

作者Sun, Yubing1,2; Wang, Xiangxue1; Ding, Congcong2; Cheng, Wencai2; Chen, Changlun2,3,4; Hayat, Tasawar5; Alsaedi, Ahmed5; Hu, Jun1,5; Wang, Xiangke1,5
刊名ACS SUSTAINABLE CHEMISTRY & ENGINEERING
出版日期2016-09-01
卷号4期号:9页码:4608-4616
关键词Cnfs Radionuclides Removal Spectroscopy Analysis Modeling
DOI10.1021/acssuschemeng.6b00738
文献子类Article
英文摘要Bacteria-derived carbonaceous nanofibers (CNFs) can be directly synthesized by the pyrolysis of bacterial cellulose pellicles under N-2 atmosphere. The batch adsorption experiments showed that the bacteria-derived CNFs displayed the excellent adsorption performance for radionuclides. The maximum adsorption capacities of the CNFs calculated from the Langmuir model at pH 4.5 and 293 K were 67.11 mg/g for Sr(II) and 57.47 mg/g for Cs(I). The adsorption of Cs(I) and Sr(II) on the CNFs decreased with increasing ionic strength at pH < 5.0, whereas no effect of ionic strength was observed at pH > 6.0, indicating that the outer-sphere surface complexation dominated the radionuclide adsorption at pH < 5.0 whereas the adsorption was attributed to inner-sphere surface complexation at pH > 6.0. The further evidence of surface complexation modeling indicated that Sr(II) and Cs(I) adsorption on the CNFs can be satisfactorily fitted by a double diffuse layer model with an outer-sphere (SOHSr2+/SOHCs+) and an inner-sphere complexes (SOSr+/SOCs). The X-ray photoelectron spectroscopy analyses demonstrated that the adsorption of Sr(II) and Cs(I) on the CNFs were ascribed to the combination of the oxygenated functional groups of the CNFs. These observations indicated that the CNFs, as inexpensive and available carbon-based nanomaterials, can be regarded as a promising adsorbent for the removal of radionuclides from aqueous solutions in environmental pollution cleanup.
WOS关键词GRAPHENE OXIDE NANOSHEETS ; MODELING TECHNIQUES ; AQUEOUS-SOLUTIONS ; SORPTION CHARACTERISTICS ; ENHANCED ADSORPTION ; ACTIVATED CARBON ; CLAY-MINERALS ; U(VI) ; REMOVAL ; CELLULOSE
WOS研究方向Chemistry ; Engineering
语种英语
WOS记录号WOS:000382713100016
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源URL[http://ir.hfcas.ac.cn:8080/handle/334002/21736]  
专题合肥物质科学研究院_中科院等离子体物理研究所
作者单位1.North China Elect Power Univ, Sch Environm & Chem Engn, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Inst Plasma Phys, POB 1126, Hefei 230031, Anhui, Peoples R China
3.Soochow Univ, Collaborat Innovat Ctr Radiat Med Jiangsu Higher, Suzhou 215123, Peoples R China
4.Soochow Univ, Sch Radiol & Interdisciplinary Sci, Suzhou 215123, Peoples R China
5.King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia
推荐引用方式
GB/T 7714		 Sun, Yubing,Wang, Xiangxue,Ding, Congcong,et al. Direct Synthesis of Bacteria-Derived Carbonaceous Nanofibers as a Highly Efficient Material for Radionuclides Elimination[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2016,4(9):4608-4616.
APA Sun, Yubing.,Wang, Xiangxue.,Ding, Congcong.,Cheng, Wencai.,Chen, Changlun.,...&Wang, Xiangke.(2016).Direct Synthesis of Bacteria-Derived Carbonaceous Nanofibers as a Highly Efficient Material for Radionuclides Elimination.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,4(9),4608-4616.
MLA Sun, Yubing,et al."Direct Synthesis of Bacteria-Derived Carbonaceous Nanofibers as a Highly Efficient Material for Radionuclides Elimination".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 4.9(2016):4608-4616.

入库方式： OAI收割

来源：合肥物质科学研究院

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