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Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal

Latent catalysts can be tuned to function smartly by assigning a sensing threshold using the displacement approach for targeted analytes. Three cyano-bridged bimetallic complexes were synthesized as “smart” latent catalysts through the supramolecular assembly of different metallic donors [Fe(II)(CN)...

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Autores principales: Chow, Cheuk-Fai, Ho, Pui-Yu, Wong, Wing-Leung, Lu, Yu-Jing, Tang, Qian, Gong, Cheng-Bin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Royal Society of Chemistry 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436551/
https://www.ncbi.nlm.nih.gov/pubmed/28580114
http://dx.doi.org/10.1039/c6sc05584b
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author Chow, Cheuk-Fai
Ho, Pui-Yu
Wong, Wing-Leung
Lu, Yu-Jing
Tang, Qian
Gong, Cheng-Bin
author_facet Chow, Cheuk-Fai
Ho, Pui-Yu
Wong, Wing-Leung
Lu, Yu-Jing
Tang, Qian
Gong, Cheng-Bin
author_sort Chow, Cheuk-Fai
collection PubMed
description Latent catalysts can be tuned to function smartly by assigning a sensing threshold using the displacement approach for targeted analytes. Three cyano-bridged bimetallic complexes were synthesized as “smart” latent catalysts through the supramolecular assembly of different metallic donors [Fe(II)(CN)(6)](4–), [Fe(II)(tBubpy)(CN)(4)](2–), and Fe(II)(tBubpy)(2)(CN)(2) with a metallic acceptor [Cu(II)(dien)](2+). The investigation of both their thermodynamic and kinetic properties on binding with toxic pollutants provided insight into their smart off–on catalytic capabilities, enabling us to establish a threshold-controlled catalytic system for the degradation of pollutants such as cyanide and oxalate. With these smart latent catalysts, a new catalyst displacement assay (CDA) was demonstrated and applied in a real wastewater treatment process to degrade cyanide pollutants in both domestic (level I, untreated) and industrial wastewater samples collected in Hong Kong, China. The smart system was adjusted to be able to initiate the catalytic oxidation of cyanide at a threshold concentration of 20 μM (the World Health Organization’s suggested maximum allowable level for cyanide in wastewater) to the less harmful cyanate under ambient conditions.
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spelling pubmed-54365512017-06-02 Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal Chow, Cheuk-Fai Ho, Pui-Yu Wong, Wing-Leung Lu, Yu-Jing Tang, Qian Gong, Cheng-Bin Chem Sci Chemistry Latent catalysts can be tuned to function smartly by assigning a sensing threshold using the displacement approach for targeted analytes. Three cyano-bridged bimetallic complexes were synthesized as “smart” latent catalysts through the supramolecular assembly of different metallic donors [Fe(II)(CN)(6)](4–), [Fe(II)(tBubpy)(CN)(4)](2–), and Fe(II)(tBubpy)(2)(CN)(2) with a metallic acceptor [Cu(II)(dien)](2+). The investigation of both their thermodynamic and kinetic properties on binding with toxic pollutants provided insight into their smart off–on catalytic capabilities, enabling us to establish a threshold-controlled catalytic system for the degradation of pollutants such as cyanide and oxalate. With these smart latent catalysts, a new catalyst displacement assay (CDA) was demonstrated and applied in a real wastewater treatment process to degrade cyanide pollutants in both domestic (level I, untreated) and industrial wastewater samples collected in Hong Kong, China. The smart system was adjusted to be able to initiate the catalytic oxidation of cyanide at a threshold concentration of 20 μM (the World Health Organization’s suggested maximum allowable level for cyanide in wastewater) to the less harmful cyanate under ambient conditions. Royal Society of Chemistry 2017-05-01 2017-03-02 /pmc/articles/PMC5436551/ /pubmed/28580114 http://dx.doi.org/10.1039/c6sc05584b Text en This journal is © The Royal Society of Chemistry 2017 https://creativecommons.org/licenses/by-nc/3.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 Unported License (http://creativecommons.org/licenses/by-nc/3.0/ (https://creativecommons.org/licenses/by-nc/3.0/) ) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Chemistry
Chow, Cheuk-Fai
Ho, Pui-Yu
Wong, Wing-Leung
Lu, Yu-Jing
Tang, Qian
Gong, Cheng-Bin
Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title_full Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title_fullStr Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title_full_unstemmed Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title_short Catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
title_sort catalyst displacement assay: a supramolecular approach for the design of smart latent catalysts for pollutant monitoring and removal
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5436551/
https://www.ncbi.nlm.nih.gov/pubmed/28580114
http://dx.doi.org/10.1039/c6sc05584b
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