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La-Ongthong K, Chantarojsiri T, Soorukram D, Leowanawat P, Reutrakul V, Kuhakarn C. Electro-oxidative Methylation of 2-Isocyanobiaryls Using N,N-dimethylformamide (DMF) as Carbon Source: Synthesis of 6-Methylphenanthridines. Chem Asian J 2024; 19:e202400176. [PMID: 38489229 DOI: 10.1002/asia.202400176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/14/2024] [Accepted: 03/14/2024] [Indexed: 03/17/2024]
Abstract
A benign electrochemical method to access 6-methylphenanthridines from 2-isocyanobiaryls using N,N-dimethylformamide (DMF) as a methyl source is reported. The protocol operates at ambient temperature without the need for harmful methylating reagents. Mechanistic studies suggested that DMF delivered a methylene synthon, followed by reduction at the cathode and tautomerization. The method offers environmental benefits by avoiding metal-based reagents and harsh conditions.
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Affiliation(s)
- Kannika La-Ongthong
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Teera Chantarojsiri
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Darunee Soorukram
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Pawaret Leowanawat
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Vichai Reutrakul
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry, Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
- Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
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2
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Kobus M, Friedrich T, Zorn E, Burmeister N, Maison W. Medicinal Chemistry of Drugs with N-Oxide Functionalities. J Med Chem 2024; 67:5168-5184. [PMID: 38549449 PMCID: PMC11017254 DOI: 10.1021/acs.jmedchem.4c00254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/08/2024] [Accepted: 03/21/2024] [Indexed: 04/12/2024]
Abstract
Molecules with N-oxide functionalities are omnipresent in nature and play an important role in Medicinal Chemistry. They are synthetic or biosynthetic intermediates, prodrugs, drugs, or polymers for applications in drug development and surface engineering. Typically, the N-oxide group is critical for biomedical applications of these molecules. It may provide water solubility or decrease membrane permeability or immunogenicity. In other cases, the N-oxide has a special redox reactivity which is important for drug targeting and/or cytotoxicity. Many of the underlying mechanisms have only recently been discovered, and the number of applications of N-oxides in the healthcare field is rapidly growing. This Perspective article gives a short summary of the properties of N-oxides and their synthesis. It also provides a discussion of current applications of N-oxides in the biomedical field and explains the basic molecular mechanisms responsible for their biological activity.
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Affiliation(s)
- Michelle Kobus
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Timo Friedrich
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Eilika Zorn
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Nils Burmeister
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
| | - Wolfgang Maison
- Universität Hamburg, Department of Chemistry, Bundesstrasse 45, 20146 Hamburg, Germany
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3
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da Silva VB, Mahy JP, Brazzolotto X, Renard PY, Ricoux R, Legros J. Detoxification of V-Nerve Agents Assisted by a Microperoxidase: New Pathway Revealed by the Use of a Relevant VX Simulant. Chembiochem 2024:e202400137. [PMID: 38591336 DOI: 10.1002/cbic.202400137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/10/2024]
Abstract
The biocatalyzed oxidative detoxification of the V-series simulant PhX, by mean of the microperoxidase AcMP11, affords the corresponding phosphonothioate as the prominent product instead of the classical P-S and P-O bond cleavage. While PhX is structurally very close to the live agent VX (the methyl group is replaced by a phenyl), assessment with other surrogates missing the nucleophilic amino function displayed more resistance under the same conditions with no phosphonothioate observed. These encouraging results highlight 1) the efficacy of AcMP11 microperoxidase to efficiently detoxify V-series organophosphorus nerve agents (OPNA), and 2) the necessity to use representative alkyl or aryl phosphonothioates simulants such as PhX bearing the appropriate side chain as well as the P-O and P-S cleavable bond to mimic accurately the V-series OPNA to prevent false positive or false negative results.
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Affiliation(s)
| | - Jean-Pierre Mahy
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91400, Orsay, France
| | - Xavier Brazzolotto
- Département de Toxicologie et Risques Chimiques, Institut de Recherche Biomédicale des Armées, 91220, Brétigny-sur-Orge, France
| | - Pierre-Yves Renard
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA, F-76000, Rouen, France
| | - Rémy Ricoux
- Université Paris-Saclay, CNRS, Institut de Chimie Moléculaire et des Matériaux d'Orsay, 91400, Orsay, France
| | - Julien Legros
- Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, COBRA, F-76000, Rouen, France
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4
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Farshadfar K, Laasonen K. DFT Mechanistic Investigation into Ni(II)-Catalyzed Hydroxylation of Benzene to Phenol by H 2O 2. Inorg Chem 2024; 63:5509-5519. [PMID: 38471975 PMCID: PMC11186014 DOI: 10.1021/acs.inorgchem.3c04461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 01/31/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024]
Abstract
Introduction of oxygen into aromatic C-H bonds is intriguing from both fundamental and practical perspectives. Although the 3d metal-catalyzed hydroxylation of arenes by H2O2 has been developed by several prominent researchers, a definitive mechanism for these crucial transformations remains elusive. Herein, density functional theory calculations were used to shed light on the mechanism of the established hydroxylation reaction of benzene with H2O2, catalyzed by [NiII(tepa)]2+ (tepa = tris[2-(pyridin-2-yl)ethyl]amine). Dinickel(III) bis(μ-oxo) species have been proposed as the key intermediate responsible for the benzene hydroxylation reaction. Our findings indicate that while the dinickel dioxygen species can be generated as a stable structure, it cannot serve as an active catalyst in this transformation. The calculations allowed us to unveil an unprecedented mechanism composed of six main steps as follows: (i) deprotonation of coordinated H2O2, (ii) oxidative addition, (iii) water elimination, (iv) benzene addition, (v) ketone generation, and (vi) tautomerization and regeneration of the active catalyst. Addition of benzene to oxygen, which occurs via a radical mechanism, turns out to be the rate-determining step in the overall reaction. This study demonstrates the critical role of Ni-oxyl species in such transformations, highlighting how the unpaired spin density value on oxygen and positive charges on the Ni-O• complex affect the activation barrier for benzene addition.
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Affiliation(s)
- Kaveh Farshadfar
- Department of Chemistry and
Material Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
| | - Kari Laasonen
- Department of Chemistry and
Material Science, School of Chemical Engineering, Aalto University, 02150 Espoo, Finland
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5
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Song R, Zhang J, Yang G, Wu Y, Yu J, Zhu H. A Non-Disposable Electrochemical Sensor Based on Laser-Synthesized Pd/LIG Nanocomposite-Modified Screen-Printed Electrodes for the Detection of H 2O 2. SENSORS (BASEL, SWITZERLAND) 2024; 24:2043. [PMID: 38610254 PMCID: PMC11014152 DOI: 10.3390/s24072043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024]
Abstract
There have been many studies on the significant correlation between the hydrogen peroxide content of different tissues or cells in the human body and the risk of disease, so the preparation of biosensors for detecting hydrogen peroxide concentration has been a hot topic for researchers. In this paper, palladium nanoparticles (PdNPs) and laser-induced graphene (LIG) were prepared by liquid-phase pulsed laser ablation and laser-induced technology, respectively. The complexes were prepared by stirring and used for the modification of screen-printed electrodes to develop a non-enzymatic hydrogen peroxide biosensor that is low cost and mass preparable. The PdNPs prepared with anhydrous ethanol as a solvent have a uniform particle size distribution. The LIG prepared by laser direct writing has good electrical conductivity, and its loose porous structure provides more adsorption sites. The electrochemical properties of the modified electrode were characterized by cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. Compared with bare screen-printed electrodes, the modified electrodes are more sensitive for the detection of hydrogen peroxide. The sensor has a linear response range of 5 µM-0.9 mM and 0.9 mM-5 mM. The limit of detection is 0.37 µM. The above conclusions indicate that the hydrogen peroxide electrochemical biosensor prepared in this paper has great advantages and potential in electrochemical catalysis.
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Affiliation(s)
- Ruijie Song
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Jianwei Zhang
- Department of the School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China;
| | - Ge Yang
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Yu Wu
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Jun Yu
- Department of the School of Medicine, Dalian University of Technology, Dalian 116024, China; (R.S.); (G.Y.); (Y.W.); (J.Y.)
| | - Huichao Zhu
- Department of the School of Control Science and Engineering, Dalian University of Technology, Dalian 116024, China;
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6
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Tan D, Fan X. COF-Based Photocatalysts for Enhanced Synthesis of Hydrogen Peroxide. Polymers (Basel) 2024; 16:659. [PMID: 38475342 DOI: 10.3390/polym16050659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/04/2023] [Accepted: 12/04/2023] [Indexed: 03/14/2024] Open
Abstract
Covalent Organic Frameworks (COFs), with their intrinsic structural regularity and modifiable chemical functionality, have burgeoned as a pivotal material in the realm of photocatalytic hydrogen peroxide (H2O2) synthesis. This article reviews the recent advancements and multifaceted approaches employed in using the unique properties of COFs for high-efficient photocatalytic H2O2 production. We first introduced COFs and their advantages in the photocatalytic synthesis of H2O2. Subsequently, we spotlight the principles and evaluation of photocatalytic H2O2 generation, followed by various strategies for the incorporation of active sites aiming to optimize the separation and transfer of photoinduced charge carriers. Finally, we explore the challenges and future prospects, emphasizing the necessity for a deeper mechanistic understanding and the development of scalable and economically viable COF-based photocatalysts for sustainable H2O2 production.
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Affiliation(s)
- Deming Tan
- School of Mechanical Engineering, Chengdu University, Chengdu 610106, China
| | - Xuelin Fan
- Institute for Advanced Study, Chengdu University, Chengdu 610106, China
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7
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Targhan H, Rezaei A, Aliabadi A, Ramazani A, Zhao Z, Zheng H. Palladium-based pseudohomogeneous catalyst for highly selective aerobic oxidation of benzylic alcohols to aldehydes. Sci Rep 2024; 14:536. [PMID: 38177209 PMCID: PMC10766977 DOI: 10.1038/s41598-023-49526-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Accepted: 12/08/2023] [Indexed: 01/06/2024] Open
Abstract
This study presents a novel class of pseudohomogeneous catalysts (PHC) based on carbon quantum dots functionalized with terpyridine ligands (CQDs-Tpy) to immobilize and stabilize palladium nanoparticles (Pd NPs). Extensive characterization techniques clearly confirmed the successful stabilization of Pd NPs on CQDs-Tpy. The effectiveness of the catalyst was demonstrated in the selective aerobic oxidation of primary and secondary of benzylic alcohols to aldehydes in the absence of additives and phase transfer catalyst (PTC). Remarkably, the reactions predominantly yielded aldehydes without further oxidation to carboxylic acids. By employing low catalyst loadings (0.13 mol%), high conversions (up to 89%) and excellent selectivity (> 99%) of the aldehyde derivatives were achieved. Moreover, the CQDs-Tpy/Pd NPs catalyst displayed suitable catalytic activity and recyclability, offering potential economic advantages. This promising approach opens up new opportunities in the field of catalysis for designing subnanometric metal-based PHCs.
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Affiliation(s)
- Homa Targhan
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Aram Rezaei
- Nano Drug Delivery Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Alireza Aliabadi
- Pharmaceutical Sciences Research Center, School of Pharmacy, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, Zanjan, 45371-38791, Iran.
| | - Zhefei Zhao
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou, 310032, China
| | - Huajun Zheng
- Department of Applied Chemistry, Zhejiang University of Technology, Hangzhou, 310032, China.
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8
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Hagelskjær O, Le Roux G, Liu R, Dubreuil B, Behra P, Sonke JE. The recovery of aerosol-sized microplastics in highly refractory vegetal matrices for identification by automated Raman microspectroscopy. CHEMOSPHERE 2023; 328:138487. [PMID: 37004825 DOI: 10.1016/j.chemosphere.2023.138487] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/17/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
Ombrotrophic peatlands are fed uniquely by atmospheric inputs and therefore have much potential as temporal archives of atmospheric microplastic (MP) deposition, yet the recovery and detection of MP within an almost purely organic matrix is challenging. This study presents a novel peat digestion protocol using sodium hypochlorite (NaClO) as a reagent for biogenic matrix removal. NaClO is more efficient than hydrogen peroxide (H2O2). By using purged air-assisted digestion, NaClO (50 vol%) reached 99% matrix digestion compared with 28% and 75% by H2O2 (30 vol%) and Fenton's reagent, respectively. At a concentration of 50 vol% NaClO did however chemically disintegrate small amounts (<10 mass %) of polyethylene terephthalate (PET) and polyamide (PA) fragments in the millimeter size range. Observation of PA6 in natural peat samples, while not found in the procedural blanks, questions whether PA is fully disintegrated by NaClO. The protocol was applied to three commercial sphagnum moss test samples, in which MP particles in the range of 0.8-65.4 μm were detected by Raman microspectroscopy. The MP mass% was determined at 0.012% corresponding to 129 thousand MP particles/g, of which 62% were smaller than 5 μm and 80% were smaller than 10 μm, yet were accountable for only 0.4% (500 ng) and 3.2% (4 μg) of the total mass of MP, respectively. These findings underline the importance of the identification of particles Ø < 5 μm when investigating atmospheric MP deposition. The MP counts were corrected for MP recovery loss and procedural blank contamination. MP spike recovery following the full protocol was estimated at 60%. The protocol offers an efficient way of isolating and pre-concentrating most aerosol sized MPs in large quantities of refractory vegetal matrices and enables the automated μRaman scanning of thousands of particles at a spatial resolution on the order of 1 μm.
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Affiliation(s)
- O Hagelskjær
- Laboratoire écologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Avenue de l'Agrobiopole, 31326, Toulouse, France; Géosciences Environnement Toulouse, CNRS UMR5563 - IRD UR 234, Université Paul Sabatier, 14 Avenue Edouard Belin, 31400, Toulouse, France.
| | - G Le Roux
- Laboratoire écologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Avenue de l'Agrobiopole, 31326, Toulouse, France
| | - R Liu
- Laboratoire écologie Fonctionnelle et Environnement, Université de Toulouse, CNRS, Avenue de l'Agrobiopole, 31326, Toulouse, France
| | - B Dubreuil
- Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRAE, 4 Allée Emile Monso, 31030, Toulouse Cedex, France
| | - P Behra
- Laboratoire de Chimie Agro-industrielle, LCA, Université de Toulouse, INRAE, 4 Allée Emile Monso, 31030, Toulouse Cedex, France
| | - J E Sonke
- Géosciences Environnement Toulouse, CNRS UMR5563 - IRD UR 234, Université Paul Sabatier, 14 Avenue Edouard Belin, 31400, Toulouse, France
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9
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Mohammed MS, Targhan H, Bahrami K. Design and introduction of quaternary ammonium hydroxide-functionalized graphene oxide quantum dots as a pseudo-homogeneous catalyst for epoxidation of α,β-unsaturated ketones. Sci Rep 2023; 13:8140. [PMID: 37208347 DOI: 10.1038/s41598-023-34635-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 05/04/2023] [Indexed: 05/21/2023] Open
Abstract
In present work, design and synthesis of a novel pseudo-homogeneous catalyst is described. For this purpose, amine-functionalized graphene oxide quantum dots (N-GOQDs) were prepared from graphene oxide (GO) by a facile one-step oxidative fragmentation approach. The prepared N-GOQDs were then modified with quaternary ammonium hydroxide groups. Various characterization techniques clearly revealed that the quaternary ammonium hydroxide-functionalized GOQDs (N-GOQDs/OH-) have been successfully synthesized. TEM image revealed that the GOQDs particles are almost regularly spherical in shape and mono-dispersed with particle sizes < 10 nm. The efficiency of the synthesized N-GOQDs/OH- as a pseudo-homogeneous catalyst in epoxidation of α,β-unsaturated ketones in the presence of aqueous H2O2 as an oxidant at room temperature was investigated. The corresponding epoxide products were obtained in good to high yields. This procedure has the advantages of a green oxidant, high yields, involvement of non-toxic reagents and reusability of the catalyst without discernible loss in activity.
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Affiliation(s)
- Mohammed Salim Mohammed
- Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, 67144-14971, Iran
| | - Homa Targhan
- Department of Organic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, 67144-14971, Iran
| | - Kiumars Bahrami
- Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, 67144-14971, Iran.
- Department of Organic Chemistry, Faculty of Chemistry, Razi University, Kermanshah, 67144-14971, Iran.
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10
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da Silva MJ, da Silva Andrade PH. Tungstic Acid: A Simple and Effective Solid Catalyst in Terpene Alcohol Oxidation Reactions with Hydrogen Peroxide. CATALYSIS SURVEYS FROM ASIA 2023. [DOI: 10.1007/s10563-023-09387-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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11
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Epoxidation of Fatty Acid Methyl Esters with Hydrogen Peroxide Catalyzed by Peroxopolyoxotungstate PW4 Encapsulated in the MIL-100(Cr) Framework. Catalysts 2023. [DOI: 10.3390/catal13010138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
The MIL-100(Cr), PW12@MIL-100(Cr) and PW4@MIL-100(Cr) catalysts were prepared and characterized through XRD, FTIR, BET, SEM, EDS and Raman spectroscopy. A comparison of the catalytic properties of the synthesized materials in the epoxidation of FAMEs with hydrogen peroxide was made. The PW4@MIL-100(Cr) catalyst exhibited the highest catalytic activity and provided a high selectivity for the formation of epoxides. The effects of the reaction temperature, catalyst loading, reaction time and FAME:hydrogen peroxide molar ratio on the reaction performance were investigated, and the optimal process conditions were determined. An epoxide yield of 73% with a selectivity of 77% could be obtained using PW4@MIL-100(Cr) after 4 h at 40 °C. The catalytic stability test showed that PW4@MIL-100(Cr) could be easily separated and reused without any treatment for at least five consecutive cycles without a loss of activity or selectivity.
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12
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Morais A, Rijo P, Batanero B, Nicolai M. Low Platinum-Content Electrocatalysts for Highly Sensitive Detection of Endogenously Released H2O2. BIOSENSORS 2022; 12:bios12090672. [PMID: 36140056 PMCID: PMC9496631 DOI: 10.3390/bios12090672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 08/05/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022]
Abstract
The commercial viability of electrochemical sensors requires high catalytic efficiency electrode materials. A sluggish reaction of the sensor’s primary target species will require a high overpotential and, consequently, an excessive load of catalyst material to be used. Therefore, it is essential to understand nanocatalysts’ fundamental structures and typical catalytic properties to choose the most efficient material according to the biosensor target species. Catalytic activities of Pt-based catalysts have been significantly improved over the decades. Thus, electrodes using platinum nanocatalysts have demonstrated high power densities, with Pt loading considerably reduced on the electrodes. The high surface-to-volume ratio, higher electron transfer rate, and the simple functionalisation process are the main reasons that transition metal NPs have gained much attention in constructing high-sensitivity sensors. This study has designed to describe and highlight the performances of the different Pt-based bimetallic nanoparticles and alloys as an enzyme-free catalytic material for the sensitive electrochemical detection of H2O2. The current analysis may provide a promising platform for the prospective construction of Pt-based electrodes and their affinity matrix.
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Affiliation(s)
- Ana Morais
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- Department of Organic Chemistry & Inorganic Chemistry, University of Alcala, 28805 Alcala de Henares, Spain
| | - Patrícia Rijo
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- iMed.Ulisboa—Research Institute for Medicines and Pharmaceutical Sciences, Faculty of Pharmacy, University of Lisbon, Av. Prof. Gama Pinto, 1649-003 Lisbon, Portugal
| | - Belen Batanero
- Department of Organic Chemistry & Inorganic Chemistry, University of Alcala, 28805 Alcala de Henares, Spain
| | - Marisa Nicolai
- CBIOS—Universidade Lusófona´s Research Centre for Biosciences & Health Technologies, Campo Grande 376, 1749-024 Lisbon, Portugal
- Correspondence:
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13
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Photoelectrocatalytic hydrogen peroxide production based on transition-metal-oxide semiconductors. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)64028-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Emmanuel López Muñoz P, Rodríguez Tzompantzi T, Bernès S, Luisa Meza-León R. Regio-, chemo- and stereoselective epoxidation of the 7,3-lactone-xylofuranose and some related chiral lactones. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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15
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16
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Catalytic Oxidations with Meta-Chloroperoxybenzoic Acid (m-CPBA) and Mono- and Polynuclear Complexes of Nickel: A Mechanistic Outlook. Catalysts 2021. [DOI: 10.3390/catal11101148] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Selective catalytic functionalization of organic substrates using peroxides as terminal oxidants remains a challenge in modern chemistry. The high complexity of interactions between metal catalysts and organic peroxide compounds complicates the targeted construction of efficient catalytic systems. Among the members of the peroxide family, m-chloroperoxybenzoic acid (m-CPBA) exhibits quite complex behavior, where numerous reactive species could be formed upon reaction with a metal complex catalyst. Although m-CPBA finds plenty of applications in fine organic synthesis and catalysis, the factors that discriminate its decomposition routes under catalytic conditions are still poorly understood. The present review covers the advances in catalytic C–H oxidation and olefine epoxidation with m-CPBA catalyzed by mono- and polynuclear complexes of nickel, a cheap and abundant first-row transition metal. The reaction mechanisms are critically discussed, with special attention to the O–O bond splitting route. Selectivity parameters using recognized model hydrocarbon substrates are summarized and important factors that could improve further catalytic studies are outlined.
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