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Polypyrrole-Mo3S13: An Efficient Sorbent for the Capture of Hg2+ and Highly Selective Extraction of Ag+ over Cu2.
Yuan, Mengwei; Yao, Huiqin; Xie, Linxia; Liu, Xiaowen; Wang, Hui; Islam, Saiful M; Shi, Keren; Yu, Zihuan; Sun, Genban; Li, Huifeng; Ma, Shulan; Kanatzidis, Mercouri G.
Afiliação
  • Yuan M; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Yao H; School of Basic Medical Sciences , Ningxia Medical University , Yinchuan 750004 , P. R. China.
  • Xie L; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Liu X; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Wang H; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Islam SM; Department of Chemistry , Northwestern University , 2145 Sheridan Road , Evanston , Illinois 60208 , United States.
  • Shi K; Department of Chemistry, Physics, and Atmospheric Sciences , Jackson State University , Jackson , Mississippi 39217 , United States.
  • Yu Z; State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering , Ningxia University , Yinchuan 750021 , P. R. China.
  • Sun G; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Li H; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Ma S; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
  • Kanatzidis MG; Beijing Key Laboratory of Energy Conversion and Storage Materials and College of Chemistry , Beijing Normal University , Beijing 100875 , P. R. China.
J Am Chem Soc ; 142(3): 1574-1583, 2020 01 22.
Article em En | MEDLINE | ID: mdl-31855420
ABSTRACT
The new material Polypyrrole-Mo3S13 (abbr. Mo3S13-Ppy) is a new material prepared by ion-exchange between Ppy-NO3 and (NH4)2Mo3S13. The Mo3S13-Ppy was designed to exhibit strong selectivity for Ag+ and highly toxic Hg2+ in mixtures with other ions. It displays an apparent selectivity ranking of Hg2+ > Ag+ ≥ Co2+, Ni2+, Cu2+, Zn2+, Cd2+, and Pb2+. The strong affinity of Mo3S13-Ppy for Ag+ and Hg2+ was confirmed with extremely high distribution coefficients (Kd) (∼107 mL/g) and remarkable removal efficiencies (>99.99%), resulting in <1 ppb concentrations of these ions. Furthermore, Mo3S13-Ppy achieved excellent separation selectivity for Ag+ from Cu2+ (even at a high Cu2+/Ag+ ratio, the molar ratio of 867 and mass ratio of 500) because of the special structure of Mo3S132- and its component Mo4+ and (S2)2-. This is promising for the direct extraction of low-grade silver from copper-rich minerals. The maximum Ag uptake capacity of 408 mg/g is redox-based and surprisingly involves the deposition of large, millimeter sized, metallic silver (Ag0) crystals on the surface of Mo3S13-Ppy.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2020 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Revista: J Am Chem Soc Ano de publicação: 2020 Tipo de documento: Article