1
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Guo Y, Zuo C, Tan W, Liu Y, Jiang L, Yu D, Ren Y, Liu X. Fabricating flame retardant polyacrylonitrile fibers modified by sodium lignosulfonate and copper ions. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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2
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Polyacrylonitrile fiber functionalized with fluorous hyperbranched polyethylenimine for selective removal of perfluorooctane sulfonate (PFOS) in firefighting wastewaters. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126539] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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3
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Ng HM, Lim G, Leo C. Comparison between hydrothermal and microwave-assisted synthesis of carbon dots from biowaste and chemical for heavy metal detection: A review. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106116] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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4
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Zhao J, Wang L, Xiao J, Tao M, Zhang W. Removal of anionic azo dyes from aqueous solutions by quaternary ammonium salt-functionalized fibers with adjustable surface microenvironments. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104684] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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5
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Du H, Xie Y, Zhang H, Chima A, Tao M, Zhang W. Oxadiazole-Functionalized Fibers for Selective Adsorption of Hg 2+. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c01562] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Huimin Du
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
| | - Yujia Xie
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
| | - Haonan Zhang
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
| | - Anyaegbu Chima
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
| | - Minli Tao
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
- National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, Tianjin University, Tianjin 300350, P. R. China
| | - Wenqin Zhang
- Department of Chemistry, School of Sciences, Tianjin University, Tianjin 300072, P. R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, P. R. China
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6
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Jung Y, Ko YG, Do T, Chun Y, Choi US, Kim CH. Core/shell hybrid fiber with aminated PAN and Fe 2O 3 as a high-capacity adsorbent for phosphate ions. JOURNAL OF HAZARDOUS MATERIALS 2019; 378:120726. [PMID: 31202072 DOI: 10.1016/j.jhazmat.2019.06.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 04/03/2019] [Accepted: 06/02/2019] [Indexed: 05/27/2023]
Abstract
APANF@Fe2O3, a phosphate adsorbent, was synthesized in two steps: the immobilization of an amine group onto polyacrylonitrile fiber (PANF) and the adsorption of an iron ion on aminated PANF (APANF). The amination degree of the PANF was adjusted considering its mechanical properties. The Fe2O3 on the surface of the APANF played a role as a phosphate-grasping layer via a ligand-exchange reaction. The APANF@Fe2O3 showed a considerable PO43- adsorption amount of ca. 6 mmol/g at a low pH region (ca. 2-7) and 3 mmol/g at a high pH region (ca. 8-12). The adsorption data were interpreted with various kinetic and isotherm models. The Langmuir model was more suitable than the Freundlich and Redlich-Peterson models to fit the experimental data of the phosphate adsorption on the APANF@Fe2O3 and the pseudo-second-order model was better matched than the pseudo-first-order and Elovich's models. The results of this study demonstrate that the surface of the fibrous adsorbent was homogenous and the phosphate adsorption behavior of the APANF@Fe2O3 followed a simultaneous chemisorption process into the Fe2O3 layer.
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Affiliation(s)
- Youngkyun Jung
- Center for Urban Energy Research, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea; Division of Energy & Environment Technology, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Young Gun Ko
- Environmental Radioactivity Assessment Team, Korea Atomic Energy Research Institute, 111 Daedeok-daero 989beon-gil, Yuseong-gu, Daejeon, 34057, Republic of Korea.
| | - Taegu Do
- Center for Urban Energy Research, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea; Division of Energy & Environment Technology, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea
| | - Youngsang Chun
- Center for Urban Energy Research, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea; Department of Interdisciplinary Bio-Micro System Technology, College of Engineering, Korea University, 146 Anam-ro, Seongbuk-gu, Seoul, 02841, Republic of Korea
| | - Ung Su Choi
- Center for Urban Energy Research, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea; Division of Energy & Environment Technology, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea.
| | - Choong Hyun Kim
- Center for Bionics, Biomedical Research Institute, Korea Institute of Science and Technology, 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul, 02792, Republic of Korea
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7
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Bi J, Li T, Ren H, Ling R, Wu Z, Qin W. Capillary electrophoretic determination of heavy-metal ions using 11-mercaptoundecanoic acid and 6-mercapto-1-hexanol co-functionalized gold nanoparticle as colorimetric probe. J Chromatogr A 2019; 1594:208-215. [DOI: 10.1016/j.chroma.2019.02.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 01/17/2019] [Accepted: 02/04/2019] [Indexed: 11/25/2022]
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8
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Kumar D, Talreja N. Nickel nanoparticles-doped rhodamine grafted carbon nanofibers as colorimetric probe: Naked eye detection and highly sensitive measurement of aqueous Cr3+ and Pb2+. KOREAN J CHEM ENG 2018. [DOI: 10.1007/s11814-018-0139-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Li P, Liu Y, Wang L, Xiao J, Tao M. Copper(II)-Schiff Base Complex-Functionalized Polyacrylonitrile Fiber as a Green Efficient Heterogeneous Catalyst for One-Pot Multicomponent Syntheses of 1,2,3-Triazoles and Propargylamines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701475] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pengyu Li
- Department of Chemistry; School of Science Tianjin University; Tianjin 300072 People's Republic of China
| | - Yuanyuan Liu
- Department of Chemistry; School of Science Tianjin University; Tianjin 300072 People's Republic of China
| | - Lu Wang
- Department of Chemistry; School of Science Tianjin University; Tianjin 300072 People's Republic of China
| | - Jian Xiao
- Department of Chemistry; School of Science Tianjin University; Tianjin 300072 People's Republic of China
| | - Minli Tao
- Department of Chemistry; School of Science Tianjin University; Tianjin 300072 People's Republic of China
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10
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He D, Liu S, Zhou F, Zhao X, Liu Y, Luo F, Liu S. Recognition of trace organic pollutant and toxic metal ions via a tailored fluorescent metal–organic coordination polymer in water environment. RSC Adv 2018; 8:34712-34717. [PMID: 35548597 PMCID: PMC9087362 DOI: 10.1039/c8ra05502e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 08/10/2018] [Indexed: 11/25/2022] Open
Abstract
A novel fluorescence material H2Sr2(bqdc)3(phen)2 (1) for trace recognition of organic pollutant and toxic metal ions is designed and prepared by two weak fluorescent ligands and Sr2+. The latter was selected although it played no role in the modulation process of luminescence and despite low-cost, alkaline earth, metal–organic coordination polymers lacking competitive functionality. The strong fluorescence of the fluorescence material was based on the propeller configuration of the metal–organic coordination polymer, which was characterized by X-ray single crystal diffraction showing that the N active sites inside the crystal channels can interact with external guests. Convenient fluorescence detection of 3-AT can be realized using an ultraviolet lamp and test strip and the determination of Cd2+ showed good reusability with a detection limit of 1 × 10−9 mol L−1, which is lower than the standard stipulated by the Environmental Protection Agency. Detailed experiments results revealed that the material was a promising candidate for specifically recognizing amitrole and Cd2+ because of its selective fluorescence quenching and sensitive detection in water. Complexes with strong fluorescence can conveniently detect the trace organic pollutant amitrole and repeatedly recognize toxic Cd2+with a low detection limit.![]()
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Affiliation(s)
- Danfeng He
- Key Laboratory of Polyoxometalate Science of the Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Shumei Liu
- Key Laboratory of Polyoxometalate Science of the Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | | | | | - Yiwei Liu
- Key Laboratory of Polyoxometalate Science of the Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Fang Luo
- Key Laboratory of Polyoxometalate Science of the Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- China
| | - Shuxia Liu
- Key Laboratory of Polyoxometalate Science of the Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- China
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11
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Li F, Dong Y, Kang W, Cheng B, Qu X, Cui G. Coordination Kinetics of Different Metal Ions with the Amidoximated Polyacrylonitrile Nanofibrous Membranes and Catalytic Behaviors of their Complexes. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.10997] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Fu Li
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
| | - Yongchun Dong
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
- State Key Laboratory of Separation Membranes and Membrane Process, Tianjin Polytechnic University; Tianjin 300387 China
| | - Weimin Kang
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
- State Key Laboratory of Separation Membranes and Membrane Process, Tianjin Polytechnic University; Tianjin 300387 China
| | - Bowen Cheng
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
- State Key Laboratory of Separation Membranes and Membrane Process, Tianjin Polytechnic University; Tianjin 300387 China
| | - Xiang Qu
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
| | - Guixin Cui
- School of Textiles; Tianjin Polytechnic University; Tianjin 300387 China
- Jiangnan Branch; China Textile Academy; Shaoxing 312071 China
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12
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Shi XL, Hu Q, Wang F, Zhang W, Duan P. Application of the polyacrylonitrile fiber as a novel support for polymer-supported copper catalysts in terminal alkyne homocoupling reactions. J Catal 2016. [DOI: 10.1016/j.jcat.2016.01.022] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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13
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Cao J, Xu G, Xie Y, Tao M, Zhang W. Thiourea modified polyacrylnitrile fibers as efficient Pd(ii) scavengers. RSC Adv 2016. [DOI: 10.1039/c6ra09689a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
N-(2-Aminoethyl)thiourea functionalized polyacrylonitrile fiber was prepared and used for scavenging Pd in the synthesis of active pharmaceutical ingredients (APIs).
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Affiliation(s)
- Jian Cao
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P. R. China
| | - Gang Xu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P. R. China
| | - Yujia Xie
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P. R. China
| | - Minli Tao
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P. R. China
| | - Wenqin Zhang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P. R. China
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14
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Xu G, Xie Y, Cao J, Tao M, Zhang WQ. Highly selective and efficient chelating fiber functionalized by bis(2-pyridylmethyl)amino group for heavy metal ions. Polym Chem 2016. [DOI: 10.1039/c6py00335d] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A classical bis(2-pyridylmethyl)amino group-modified polyacrylonitrile fiber possesses high selectivity and excellent recyclability for heavy metal ion absorption.
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Affiliation(s)
- Gang Xu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P.R. China
| | - Yujia Xie
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P.R. China
| | - Jian Cao
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P.R. China
| | - Minli Tao
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P.R. China
| | - Wen-Qin Zhang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin
- P.R. China
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15
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Song Y, Li J, Ye G, Xu J, Jiang M. Polyamidoxime/Poly(vinyl alcohol) Composite Chelating Fiber Prepared by Emulsion Spinning and Its Adsorption Properties for Metal Ions. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b03250] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yongjiao Song
- The State
Key Laboratory
of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006, China
| | - Junfan Li
- The State
Key Laboratory
of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006, China
| | - Guangdou Ye
- The State
Key Laboratory
of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006, China
| | - Jianjun Xu
- The State
Key Laboratory
of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006, China
| | - Mengjin Jiang
- The State
Key Laboratory
of Polymer Materials and Engineering, Sichuan University, Chengdu, 61006, China
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16
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Xing X, Yang H, Tao M, Zhang W. An overwhelmingly selective colorimetric sensor for Ag(+) using a simple modified polyacrylonitrile fiber. JOURNAL OF HAZARDOUS MATERIALS 2015; 297:207-216. [PMID: 25967097 DOI: 10.1016/j.jhazmat.2015.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2015] [Revised: 04/14/2015] [Accepted: 05/01/2015] [Indexed: 06/04/2023]
Abstract
A carboxymethyl-dithiocarbamate immobilized polyacrylonitrile fiber colorimetric sensor has been synthesized. This fiber sensor exhibits excellent selectivity and sensitivity for Ag(+) in aqueous solution with a remarkable color change from light pink to red-brown over a wide pH range of 2-12. The sensor responds selectively to Ag(+) in the presence of other ions, including Mg(2+), Al(3+), Ca(2+), Cr(3+), Mn(2+), Co(2+), Ni(2+), Cu(2+), Zn(2+), Cd(2+), Hg(2+) and Pb(2+). The colorimetric sensor has an extremely fast response time (10s) and a low visual limit of detection (5.53×10(-12) mol/L). The fiber sensor also undergoes an obvious color change in the presence of Ag(+) solutions containing EDTA, NaCl or NaBr. Density functional theory optimization reveals that the sensor and Ag(+) interact via a seven-membered ring complexation mechanism.
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Affiliation(s)
- Xiaoli Xing
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Huixiao Yang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Minli Tao
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China.
| | - Wenqin Zhang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China; Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
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17
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Fan Y, Liu HJ, Zhang Y, Chen Y. Adsorption of anionic MO or cationic MB from MO/MB mixture using polyacrylonitrile fiber hydrothermally treated with hyperbranched polyethylenimine. JOURNAL OF HAZARDOUS MATERIALS 2015; 283:321-8. [PMID: 25305362 DOI: 10.1016/j.jhazmat.2014.09.042] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Revised: 09/18/2014] [Accepted: 09/19/2014] [Indexed: 05/13/2023]
Abstract
One-step hydrothermal treatment of polyacrylonitrile fiber (PANF) with hyperbranched polyethylenimine (HPEI) resulted in zwitterionic PANF-g-HPEI that contained not only the grafted HPEI moieties but also many COOH groups generated in situ. Increasing the weight gain of PANF-g-HPEI from 10% to 90% resulted in the increase of its COOH, amino and amide groups from 0.12 to 1.86 mmol/g, 1.44 to 8.90 mmol/g, and 0.67 to 2.12 mmol/g, respectively. Dye adsorption experiments demonstrated that (1) such PANF-g-HPEIs could effectively adsorb anionic Methyl Orange (MO) or cationic Methylene Blue (MB), through the pretreatment with acidic or basic solution, respectively; (2) PANF-g-HPEIs could selectively adsorb the anionic MO or the cationic MB from MO/MB mixture through the pretreatment with solution of pH=5 or 10, respectively; (3) the cationic or anionic dyes adsorbed by PANF-g-HPEIs could be reversibly desorbed by the aqueous solution of pH=1 or 10, respectively; (4) PANF-g-HPEI could be recycled efficiently, and its dye adsorption performances did not show pronounced loss even after 10 adsorption/desorption cycles, superior to PANF treated with the low molar-mass polyamines.
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Affiliation(s)
- You Fan
- Department of Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China
| | - Hua-Ji Liu
- Department of Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China
| | - Yao Zhang
- Department of Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China
| | - Yu Chen
- Department of Chemistry, School of Sciences, Tianjin University, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, PR China.
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Jin GP, Xu SY, Lei P, Fu Y, Feng X, Wu ZX, Yu M, Dai S, Liu G. Electrochemical mediated preparation of chelating polymer brushes at paraffin-impregnated graphite electrode for Pb2+ sensing. Electrochim Acta 2014. [DOI: 10.1016/j.electacta.2014.03.060] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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19
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Jin GP, Fu Y, Bao XC, Feng XS, Wang Y, Liu WH. Electrochemically mediated atom transfer radical polymerization of iminodiacetic acid-functionalized poly(glycidyl methacrylate)grafted at carbon fibers for nano-nickel recovery from spent electroless nickel plating baths. J APPL ELECTROCHEM 2014. [DOI: 10.1007/s10800-014-0666-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Liu T, Li G, Zhang N, Chen Y. An inorganic-organic hybrid optical sensor for heavy metal ion detection based on immobilizing 4-(2-pyridylazo)-resorcinol on functionalized HMS. JOURNAL OF HAZARDOUS MATERIALS 2012; 201-202:155-161. [PMID: 22177015 DOI: 10.1016/j.jhazmat.2011.11.060] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Revised: 11/16/2011] [Accepted: 11/17/2011] [Indexed: 05/31/2023]
Abstract
A novel and low-cost optical sensor for heavy metal ion detection has been prepared by immobilizing 4-(2-pyridylazo)-resorcinol (PAR) on the functionalized hexagonal mesoporous silica (HMS) via N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride (TMAC). The successful fabrication of this optical sensor is confirmed by extensive characterizations using FT-IR, low angle X-ray diffraction (XRD), UV-vis spectroscopy and N(2) sorption, meanwhile its colorimetric properties, selectivity, sensitivity and reversibility are also investigated. The optical sensor responds selectively to heavy metal ions, such as Fe(3+), Cd(2+), Ni(2+), Zn(2+), Pb(2+), Co(2+), Hg(2+) and Cu(2+) with a color change from yellow to orange or purple in alkaline solutions, while it shows a color change only for Cu(2+) under strongly acidic conditions. At pH 12.0, this optical sensor has a high sensitivity that makes it possible to detect Cu(2+) in aqueous solution with the detection limit as low as 40ppb by naked-eye. This optical sensor also shows excellent reversibility and regeneration by treatment with a solution of EDTA.
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Affiliation(s)
- Tongge Liu
- State Key Laboratory of Fine Chemicals, College of Chemical Engineering, Dalian University of Technology, Dalian 116024, PR China
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