Electrochemical pesticide sensors based on electropolymerized metallophthalocyanines

Akyüz, Duygu; Keleş, Turgut; Bıyıklıoğlu, Zekeriya

doi:10.1016/j.jelechem.2017.09.044

Cited by 55 publications

(18 citation statements)

References 55 publications

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“…The structure is closely related to that of heme-porphyrin ligands complexed with an iron molecule — a natural component in many enzymes, which attracted attention to the catalytic properties of MPc [ 70 ]. It has been shown that MPc can be easily modulated by incorporating different metal ions in its centre and various substituents [ 71 ]. Rahim et al performed a chronoamperometric oxalic acid determination under a nitrogen atmosphere in a KCl solution at a neutral pH (changing pH from 2 to 9 showed insignificant changes in response).…”

Section: Cobalt Oxidementioning

confidence: 99%

Electrochemical sensors based on metal nanoparticles with biocatalytic activity

et al. 2022

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Biosensors have attracted a great deal of attention, as they allow for the translation of the standard laboratory-based methods into small, portable devices. The field of biosensors has been growing, introducing innovations into their design to improve their sensing characteristics and reduce sample volume and user intervention. Enzymes are commonly used for determination purposes providing a high selectivity and sensitivity; however, their poor shelf-life is a limiting factor. Researchers have been studying the possibility of substituting enzymes with other materials with an enzyme-like activity and improved long-term stability and suitability for point-of-care biosensors. Extra attention is paid to metal and metal oxide nanoparticles, which are essential components of numerous enzyme-less catalytic sensors. The bottleneck of utilising metal-containing nanoparticles in sensing devices is achieving high selectivity and sensitivity. This review demonstrates similarities and differences between numerous metal nanoparticle-based sensors described in the literature to pinpoint the crucial factors determining their catalytic performance. Unlike other reviews, sensors are categorised by the type of metal to study their catalytic activity dependency on the environmental conditions. The results are based on studies on nanoparticle properties to narrow the gap between fundamental and applied research. The analysis shows that the catalytic activity of nanozymes is strongly dependent on their intrinsic properties (e.g. composition, size, shape) and external conditions (e.g. pH, type of electrolyte, and its chemical composition). Understanding the mechanisms behind the metal catalytic activity and how it can be improved helps designing a nanozyme-based sensor with the performance matching those of an enzyme-based device. Graphical abstract

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Section: Cobalt Oxidementioning

confidence: 99%

Electrochemical sensors based on metal nanoparticles with biocatalytic activity

et al. 2022

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“…As an important part of nanomaterials, metal nanomaterials have the characteristics and properties of nanomaterials, such as macroscopic quantum tunneling, quantum size effects, and surface effects [54,55,56]. It has been used in various fields, such as biosensors and electronic products.…”

Section: Nanomaterials Based Electrochemical Immunosensormentioning

confidence: 99%

Nanomaterials-Based Electrochemical Immunosensors

et al. 2019

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With the development of nanomaterials and sensor technology, nanomaterials-based electrochemical immunosensors have been widely employed in various fields. Nanomaterials for electrode modification are emerging one after another in order to improve the performance of electrochemical immunosensors. When compared with traditional detection methods, electrochemical immunosensors have the advantages of simplicity, real-time analysis, high sensitivity, miniaturization, rapid detection time, and low cost. Here, we summarize recent developments in electrochemical immunosensors based on nanomaterials, including carbon nanomaterials, metal nanomaterials, and quantum dots. Additionally, we discuss research challenges and future prospects for this field of study.

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“…Using these techniques low detection limits can be achieved obtaining results with high selectivity and accuracy. However, this kind of analysis should be performed necessarily by well-trained personnel due to the laborious sample treatments [22,23] and the complex analytical procedures. Therefore, despite the associated high costs and low throughput, these kinds of techniques are undoubtedly suitable as a confirmatory method.…”

Section: Introductionmentioning

confidence: 99%

Trends and Perspectives in Immunosensors for Determination of Currently-Used Pesticides: The Case of Glyphosate, Organophosphates, and Neonicotinoids

et al. 2019

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Pesticides, due to their intensive use and their peculiar chemical features, can persist in the environment and enter the trophic chain, thus representing an environmental risk for the ecosystems and human health. Although there are several robust and reliable standard analytical techniques for their monitoring, the high frequency of contamination caused by pesticides requires methods for massive monitoring campaigns that are capable of rapidly detecting these compounds in many samples of different origin. Immunosensors represent a potential tool for simple, rapid, and sensitive monitoring of pesticides. Antibodies coupled to electrochemical or optical transducers have resulted in effective detection devices. In this review, the new trends in immunosensor development and the application of immunosensors for the detection of pesticides of environmental concern—such as glyphosate, organophosphates, and neonicotinoids—are described.

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Electrochemical pesticide sensors based on electropolymerized metallophthalocyanines

Cited by 55 publications

References 55 publications

Electrochemical sensors based on metal nanoparticles with biocatalytic activity

Electrochemical sensors based on metal nanoparticles with biocatalytic activity

Nanomaterials-Based Electrochemical Immunosensors

Trends and Perspectives in Immunosensors for Determination of Currently-Used Pesticides: The Case of Glyphosate, Organophosphates, and Neonicotinoids

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