The new material polypyrrole/MoS42−(MoS4‐Ppy), prepared by ion‐exchange of NO3‐ of NO3‐Ppy with MoS42−, displays high acid stability and excellent uptake for heavy metal ions such as Hg2+, Ag+, Cu2+, and Pb2+. The different maximum adsorption capacities (
- Award ID(s):
- 1757351
- NSF-PAR ID:
- 10158833
- Date Published:
- Journal Name:
- The minerals metals materials series
- ISSN:
- 2367-1181
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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Abstract q m) for Cu2+, Pb2+, Hg2+, and Ag+depend on the various binding modes arising from the different thiophilicity of these metal ions. The removals of Ag+and Pb2+reach >99.6% within 5 min, and for highly toxic Hg2+, >98% removal achieves at 1 min. At strong acid limit, the exceptionalq m(Ag+) of 725 mg g−1places the MoS4‐Ppy at the top of materials for such removal. Uptake kinetics of Ag+, Hg2+, and Pb2+is extremely fast: >99.9% removal rates at wide pH range (0.5–6) within 1–5 min. Also, at strongly acidic conditions (pH ≈ 1), for highly toxic Hg2+, <2 ppb concentration can be achieved, accepted as safe limit. The MoS4‐Ppy demonstrates an outstanding ability to separate low‐concentrated Ag+from high concentrated Cu2+especially under strong acidic conditions (pH ≈ 1), showing a large separation factor SFAg/Cu(K dAg/K dCu) of 105(>100). MoS4‐Ppy is a superior and novel sorbent material for water remediation applications as well as precious metals recovery. -
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/https://doi.org/10.1007/978-3-030-35790-0_13
