Imidazole-derived graphene nanocatalysts for organophosphate destruction: Powder and thin film heterogeneous reactions

Hostert, Leandro; Blaskievicz, Sirlon F.; Fonsaca, Jéssica E. S.; Domingues, Sergio H.; Zarbin, Aldo J. G.; Orth, Elisa S.

doi:10.1016/j.jcat.2017.10.008

Cited by 30 publications

(40 citation statements)

References 61 publications

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“…It was proposed (Figure15a) that the nucleophilic attack by thiolate can mimick the enzymatic reactions. Later they reported anchoring imidazole to GO, either through mild aqueous reaction or liquid/liquid functionalization, to enhance the hydrolysis efficiency in the destruction of DEDNPP and paraoxon (Figure b) …”

Section: Carbon – Based Nanomaterials For Mimicking Phosphatases and Nmentioning

confidence: 99%

Section: Carbon – Based Nanomaterials For Mimicking Phosphatases and Nmentioning

confidence: 99%

“…Therefore, a promising progress lately is the development of non‐metal catalysts, such as polymers, GO, which dominate the hydrolysis interactions, with or without metal ions. For example, addition of simple‐structured N‐methylmorpholine (NMM), imidazole, and triethylamine can significantly enhance the reaction rate of hydrolysis because the nitrogen‐containing bases may assist the deprotonation of metal‐bound water . Similar acceleration was observed in vinylimidazole‐containing polymers chelated with Co 2+ , GO complex with Cu 2+ and Zn 2+ , Au with organic corona, peptides, etc.…”

Section: Conclusion Challenges and Perspectivementioning

confidence: 99%

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From DNA to Nerve Agents – The Biomimetic Catalysts for the Hydrolysis of Phosphate Esters

et al. 2020

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The phosphate ester bonds are widely present in living organisms and in the environment. From the nucleic acids to the sparingly dispersed pesticides and chemical warfare residues, the phosphoester bond's stability against hydrolysis can be extremely high or exceptionally low. Recently, the enzyme-mimicking nanomaterials, namely 'nanozyme', have been explored for their activities in hydrolytically cleaving DNA, organophosphate and their analogues. Herein in a broad perspective these nanomaterials were summarized and compared with a view to reproducing the catalysis efficiency and selectivity of natural phosphatases and nucleases. The development of biomimetic inorganic materials would not only provide potential nanomedicine for future gene editing, but also offer alternative solutions to the environmentally friendly treatment of pesticide residues and chemical warfare stockpiles.

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Section: Carbon – Based Nanomaterials For Mimicking Phosphatases and Nmentioning

confidence: 99%

Section: Carbon – Based Nanomaterials For Mimicking Phosphatases and Nmentioning

confidence: 99%

Section: Conclusion Challenges and Perspectivementioning

confidence: 99%

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From DNA to Nerve Agents – The Biomimetic Catalysts for the Hydrolysis of Phosphate Esters

et al. 2020

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“…For the less reactive P=S family, N‐alkylation of IMZ is more favorable, which also leads to nontoxic diesters in a noncatalytic but effective process . The high efficiency and versatility of IMZ has also inspired many IMZ‐based catalysts for OP detoxification, including polymers, nanomaterials, and even waste products, reaffirming the importance of searching for new reactive scaffolds.…”

Section: Introductionmentioning

confidence: 99%

Competitive Reactivity of Tautomers in the Degradation of Organophosphates by Imidazole Derivatives

Campos

Silva

Menezes

et al. 2020

Chemistry A European J

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The harmful impact caused by pesticides on human health and the environment necessitates the developmento fe fficient degradation processes and control of prohibited stocks of such substances. Organophosphates (OPs) are among the most used agrochemicals in the world and their degradation can proceed through several possible pathways. Investigatingt he reactivity of OPs with nucleophilic speciesa llows one to propose new and efficientc atalyst scaffolds for use in detoxification. In light of the remarkable catalytic activity of imidazole (IMZ) at promoting dephosphorylation processes of OPs, the reactivity of 4(5)-hy-droxymethylimidazole( HMZ) with diethyl-2,4-dinitrophenylphosphate (DEDNPP) and Paraoxon are evaluatedb y combining experimental andtheoretical approaches.I tisobservedt hat HMZ is an efficient and regiospecific catalyst with reactivity modulated by competing tautomers. To propose an optimal IMZ-based catalyst, quantumc hemical calculations were performed for monosubstituted 4(5)IMZ derivativest hat might cleave DEDNPP.B oth inductivee ffects and hydrogen bonding by the substituents are shown to influence barriers and mechanisms.[a] Prof.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

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“…Graphene, a two-dimensional monolayer of sp 2 -hybridized carbon atoms, has been one of the most celebrated materials in recent years, due to its exceptional and intriguing properties, which makes it a promising material for application in different fields. 1 – 6 One of the most important issues in graphene research is related to the fabrication method, because it has strong influence on the resulting structure (and consequently properties) of the obtained material. Characteristics such as the presence (or not) of defects and heteroatoms, the number of stacked sheets (mono-, bi-, tri- or multi-layers), edge chirality control and lateral extension of graphene are strongly dependent on the preparation route.…”

Section: Introductionmentioning

confidence: 99%

Facile room temperature synthesis of large graphene sheets from simple molecules

et al. 2018

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Imidazole-derived graphene nanocatalysts for organophosphate destruction: Powder and thin film heterogeneous reactions

Cited by 30 publications

References 61 publications

From DNA to Nerve Agents – The Biomimetic Catalysts for the Hydrolysis of Phosphate Esters

From DNA to Nerve Agents – The Biomimetic Catalysts for the Hydrolysis of Phosphate Esters

Competitive Reactivity of Tautomers in the Degradation of Organophosphates by Imidazole Derivatives

Facile room temperature synthesis of large graphene sheets from simple molecules

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