Polypyrrole-Mo3S13: An Efficient Sorbent for the Capture of Hg2+ and Highly Selective Extraction of Ag+ over Cu2+

Mengwei Yuan; Huiqin Yao; Linxia Xie; Xiaowen Liu; Hui Wang; Saiful M. Islam; Keren Shi; Zihuan Yu; Genban Sun; Huifeng Li; Shulan Ma; Mercouri G. Kanatzidis

doi:10.1021/jacs.9b12196

Polypyrrole-Mo₃S₁₃: An Efficient Sorbent for the Capture of Hg²⁺ and Highly Selective Extraction of Ag⁺ over Cu²⁺

Mengwei Yuan, Huiqin Yao, Linxia Xie, Xiaowen Liu, Hui Wang, Saiful M. Islam, Keren Shi, Zihuan Yu, Genban Sun, Huifeng Li, Shulan Ma^*, Mercouri G. Kanatzidis

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

78 Scopus citations

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 (K_d) (∼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 Mo₃S₁₃ ^2- 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.

Original language	English (US)
Pages (from-to)	1574-1583
Number of pages	10
Journal	Journal of the American Chemical Society
Volume	142
Issue number	3
DOIs	https://doi.org/10.1021/jacs.9b12196
State	Published - Jan 22 2020

Funding

This work was supported by the national Science Foundation of China (No. U1832152, 21665021, 21771024, and 21871028), Beijing Municipal Natural Science Foundation (2182029), West China first-class Disciplines Basic Medical Sciences at Ningxia Medical University (No. NXYLXK2017B07), Ningxia Key research and Development Program (Special Talents) (No. 2018BEG03017), Foundation of State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering (Grant No. 2017-K07). At Northwestern University this work was supported in part by the US National Science Foundation (grant DMR 1708254).

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

Access to Document

10.1021/jacs.9b12196

Cite this

@article{77427624516443698070cbfac13cd9ff,

title = "Polypyrrole-Mo3S13: An Efficient Sorbent for the Capture of Hg2+ and Highly Selective Extraction of Ag+ over Cu2+",

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 Mo3S13 2- 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.",

author = "Mengwei Yuan and Huiqin Yao and Linxia Xie and Xiaowen Liu and Hui Wang and Islam, {Saiful M.} and Keren Shi and Zihuan Yu and Genban Sun and Huifeng Li and Shulan Ma and Kanatzidis, {Mercouri G.}",

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doi = "10.1021/jacs.9b12196",

language = "English (US)",

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T2 - An Efficient Sorbent for the Capture of Hg2+ and Highly Selective Extraction of Ag+ over Cu2+

AU - Yuan, Mengwei

AU - Yao, Huiqin

AU - Xie, Linxia

AU - Liu, Xiaowen

AU - Wang, Hui

AU - Islam, Saiful M.

AU - Shi, Keren

AU - Yu, Zihuan

AU - Sun, Genban

AU - Li, Huifeng

AU - Ma, Shulan

AU - Kanatzidis, Mercouri G.

PY - 2020/1/22

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N2 - 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 Mo3S13 2- 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.

AB - 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 Mo3S13 2- 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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