Silver 4,4′-Vinylenedipyridine Coordination Polymers: Linker Effects on Formation Thermodynamics and Anion Exchange DOI
Jeremy L. Barnett, John S. Wenger, Addis Getahun

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 64(1), P. 37 - 49

Published: Dec. 19, 2024

Four new and one previously reported silver 4,4′-vinylenedipyridine (Vpe) coordination polymers were tested as anion exchange materials to assess their potential for pollutant sequestration compared analogous 4,4′-bipyridine (bipy) polymers. The synthesized using nitrate, tetrafluoroborate, perchlorate, perrhenate, or chromate the produce cationic with solubilities ranging from 0.0137(7) 0.21(5) mM. These values are much lower than bipy [0.045(3) 5.5(5) mM] agree thermochemical calculations. [Ag(Vpe)+][BF4–], [Ag2(Vpe)2.52+][CrO42–]·5H2O, [Ag(Vpe)+][ReO4–]·2H2O structures reported. Perrhenate ions in an equimolar solution fully adsorbed by [Ag(Vpe)+][NO3–]·3H2O [620(2) 137.1(6) mg/g, respectively] well [Ag(Vpe)+][BF4–] [661.8(3) 190(3) via exchange. DFT calculations show that torsional energetics play a significant role formation thermodynamics reducing energy cost 4.8 kJ/mol when is replaced Vpe silver-based results obtained flat ligand highlight of practical

Language: Английский

Synthesis of magnetic multi-walled carbon nanotubes with layered double hydroxide (M-MWCNTs@MnAl-LDH) nanocomposite as an adsorbent for lead extraction DOI

Muhammad Balal Arain,

Mustafa Soylak

Food Chemistry, Journal Year: 2024, Volume and Issue: 463, P. 141311 - 141311

Published: Sept. 23, 2024

Language: Английский

Citations

6
Molybdenum-Oxysulfide-Functionalized MgAl-Layered Double Hydroxides─A Sorbent for Selenium Oxoanions DOI

Robiul Alam,

Subrata Chandra Roy, Taohedul Islam

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(24), P. 10997 - 11005

Published: June 4, 2024

Effective removal of chemically toxic selenium oxoanions at high-capacity and trace levels from contaminated water remains a challenge in current scientific pursuits. Here, we report the functionalization MgAl layered double hydroxide with molybdenum-oxysulfide (MoO2S2) anion, referred to as LDH-MoO2S2, its potential sequester SeVIO42– SeIVO32– aqueous solution. LDH-MoO2S2 nanosheets were synthesized by an ion exchange method Synchrotron X-ray pair distribution function (PDF) extended absorption fine structure (EXAFS) revealed unexpected transformation MoO2S22– Mo2O2S62– like species during intercalation process. is remarkably efficient removing SeO42– SeO32– ions ppm level (≤10 ppb), constant (Kd) ranging 104 105 mL/g. This material showed exceptionally high sorption capacities 237 358 mg/g for SeO32–, respectively. Furthermore, demonstrates substantial affinity efficiency remove SeO32–/SeO42– even presence competitive water. Hence, (VI/IV) collectively occurs through reductive precipitation mechanisms. work provides significant insights into chemical MoO2S2 anion LDH emphasizes exceptional positioning it premier sorbent oxoanions.

Language: Английский

Citations

4
Chemical upcycling of Ni from electroplating wastewater to well-defined catalyst for electrooxidation of glycerol to formate DOI
Rongwei Zhai,

Meiqi Zheng,

Yifan Yan

et al.

Dalton Transactions, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

This work offers a potential pathway to upcycle Ni-containing wastewater into valuable electrocatalyst.

Language: Английский

Citations

0
Efficient Sequestration of Heavy Metal Cations by [Mo2S12]2− Intercalated Cobalt Aluminum-Layered Double Hydroxide DOI Creative Commons
Subrata Chandra Roy, Carrie L. Donley,

Saiful M. Islam

et al.

Inorganics, Journal Year: 2025, Volume and Issue: 13(2), P. 50 - 50

Published: Feb. 10, 2025

Heavy metal cations such as Ag+, Pb2+, and Hg2+ can accumulate in living organisms, posing severe risks to biological systems, including humans. Therefore, removing heavy from wastewater is crucial before discharging them the environment. However, trace levels high-capacity removal of metals remain a critical challenge. This work demonstrates synthesis characterization [Mo2S12]2− intercalated cobalt aluminum-layered double hydroxide, CoAl―Mo2S12―LDH (CoAl―Mo2S12), its remarkable sorption properties for metals. material shows high efficiency over 99.9% Cu2+, Hg2+, Pb2+ 10 ppm aqueous solutions with distribution constant, Kd, 107 mL/g. The selectivity order these ions, determined mixed ion state experiment, was < Cu2+ ≪ Ag+. study also suggests that CoAl―Mo2S12 not selective Ni2+, Cd2+, Zn2+ cations. an efficient sorbent ions at pH~12, performance both Ag+ retaining > 99.7% across pH range ~2 12. Our highly competent silver cation adsorbent exhibiting capacity (qm) ~918 mg/g compared reported data. A detailed mechanistic analysis post-treated solid samples reveals formation Ag2S, HgS, PbMoO4, respectively, suggesting precipitation reaction mechanism.

Language: Английский

Citations

0
Heavy metal ion adsorption mechanism of polysulfide-modified layered double hydroxide DOI
Kenji Tamura, Jonathon Tanks,

Daiki Niizeki

et al.

Applied Clay Science, Journal Year: 2025, Volume and Issue: 269, P. 107759 - 107759

Published: Feb. 26, 2025

Language: Английский

Citations

0
Silver 4,4′-Vinylenedipyridine Coordination Polymers: Linker Effects on Formation Thermodynamics and Anion Exchange DOI
Jeremy L. Barnett, John S. Wenger, Addis Getahun

et al.

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 64(1), P. 37 - 49

Published: Dec. 19, 2024

Four new and one previously reported silver 4,4′-vinylenedipyridine (Vpe) coordination polymers were tested as anion exchange materials to assess their potential for pollutant sequestration compared analogous 4,4′-bipyridine (bipy) polymers. The synthesized using nitrate, tetrafluoroborate, perchlorate, perrhenate, or chromate the produce cationic with solubilities ranging from 0.0137(7) 0.21(5) mM. These values are much lower than bipy [0.045(3) 5.5(5) mM] agree thermochemical calculations. [Ag(Vpe)+][BF4–], [Ag2(Vpe)2.52+][CrO42–]·5H2O, [Ag(Vpe)+][ReO4–]·2H2O structures reported. Perrhenate ions in an equimolar solution fully adsorbed by [Ag(Vpe)+][NO3–]·3H2O [620(2) 137.1(6) mg/g, respectively] well [Ag(Vpe)+][BF4–] [661.8(3) 190(3) via exchange. DFT calculations show that torsional energetics play a significant role formation thermodynamics reducing energy cost 4.8 kJ/mol when is replaced Vpe silver-based results obtained flat ligand highlight of practical

Language: Английский

Citations

0