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Synthesis of poly(1,5-diaminonaphthalene) microparticles with abundant amino and imino groups as strong adsorbers for heavy metal ions.
Li, Xin-Gui; Huang, Mei-Rong; Jiang, Yuan-Bo; Yu, Jie; He, Zikai.
Afiliação
  • Li XG; State Key Laboratory of Pollution Control and Resource Reuse, and Shanghai Institute of Pollution Control and Ecological Security, and International Joint Research Center for Sustainable Urban Water System, College of Environmental Science and Engineering, Tongji University, 1239 SiPing Road, Shangh
  • Huang MR; Key Laboratory of Theory & Technology for Micro-Nano Optoelectronic Information System of Ministry of Industry & Information Technology, College of Materials Science and Engineering and School of Science, Harbin Institute of Technology (Shenzhen), Guangdong, 518055, China. lixingui@tongji.ed
  • Jiang YB; Key Laboratory of Advanced Civil Engineering Materials, College of Materials Science and Engineering, Tongji University, Shanghai, 200092, China. lixingui@tongji.edu.cn.
  • Yu J; Department of Molecular Engineering, Kyoto University, Nishikyo-ku, Kyoto, 615-8510, Japan. lixingui@tongji.edu.cn.
  • He Z; State Key Laboratory of Pollution Control and Resource Reuse, and Shanghai Institute of Pollution Control and Ecological Security, and International Joint Research Center for Sustainable Urban Water System, College of Environmental Science and Engineering, Tongji University, 1239 SiPing Road, Shangh
Mikrochim Acta ; 186(4): 208, 2019 03 02.
Article em En | MEDLINE | ID: mdl-30826944
ABSTRACT
Poly(1,5-diaminonaphthalene) microparticles with abundant reactive amino and imino groups on their surface were synthesized by one-step oxidative polymerization of 1,5-diaminonaphthalene using ammonium persulfate as the oxidant. The molecular, supramolecular, and morphological structures of the microparticles were systematically characterized by IR and UV-vis spectroscopies, elementary analysis, wide-angle X-ray diffractometry, and transmission electron microscopy. The microparticles demonstrate electrical semiconductivity and high resistance to strong acid and alkali, and strong adsorption capability for lead(II), mercury(II), and silver(I) ions. The experimental conditions for adsorption of Pb(II) were optimized by varying the persulfate/monomer ratio, adsorption time, sorbent concentration, and pH value of the Pb(II) solution. The maximum adsorption capacity is 241 mg·g-1 for particles after a 24 h-exposure to a solution at an initial Pb(II) concentration of 29 mM. The adsorption data fit a Langmuir isotherm and follow a pseudo-second-order reaction kinetics. This indicates a chemical adsorption that is typical for a chelation interaction between Pb(II) and amino/imino groups on the sorbent. Graphical abstract Poly(1,5-diaminonaphthalene) microparticles with abundant functional amino and imino groups have been synthesized by one-step direct polymerization of non-volatile 1,5-diaminonaphthalene in aqueous medium for sustainable preparation of high-performance adsorbents to strongly adsorb lead(II), mercury(II), and silver(I) ions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2019 Tipo de documento: Article