Chitosan-based molecularly imprinted photoelectric sensor with ZnO/Bi2O3/Bi2S3 sensing layer for thiamethoxam determination

Xiao, Wei; Wang, Liangfeng; Wei, Xiao-Ping; Li, Jianping

doi:10.1007/s00604-022-05326-1

Cited by 10 publications

(3 citation statements)

References 37 publications

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“…The specific binding of the recognition element to the pesticide is another strategy to form steric hindrance on the photoelectrode surface. For example, when a target pesticide is captured by its aptamer, or MIP, the formation of an aptamer-pesticide complex or MIP-pesticide complex will increase the steric hindrance and decrease the conductivity for electron transfer [128][129][130][131][132][133][134]. A PEC sensor was constructed by Cao and coworkers based on a hierarchically porous Cu-BTC/g-C 3 N 4 nanosheet (Cu-BTC/CN-NS) as both a photoactive material and the recognition element for glyphosate [135] (Figure 5c).…”

Section: Steric Hindrancementioning

confidence: 99%

“…Meanwhile, long operation times might promote the formation of recognition element-target pesticide complexes and contribute to the steric hindrance. To achieve high sensitivity, some researchers optimized the incubation or adsorption time until the binding reactions reached saturation [128,131]. As the steric hindrance is caused by the formation of recognition element-target pesticide complexes, most of the sensing photoelectrodes are not reusable due to the irreversible binding reactions between the recognition elements and the target pesticides.…”

Section: Steric Hindrancementioning

confidence: 99%

See 1 more Smart Citation

Recent Progress in Photoelectrochemical Sensing of Pesticides in Food and Environmental Samples: Photoactive Materials and Signaling Mechanisms

Song,

Chen,

et al. 2024

Molecules

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Pesticides have become an integral part of modern agricultural practices, but their widespread use poses a significant threat to human health. As such, there is a pressing need to develop effective methods for detecting pesticides in food and environmental samples. Traditional chromatography methods and common rapid detection methods cannot satisfy accuracy, portability, long storage time, and solution stability at the same time. In recent years, photoelectrochemical (PEC) sensing technology has gained attention as a promising approach for detecting various pesticides due to its salient advantages, including high sensitivity, low cost, simple operation, fast response, and easy miniaturization, thus becoming a competitive candidate for real-time and on-site monitoring of pesticide levels. This review provides an overview of the recent advancements in PEC methods for pesticide detection and their applications in ensuring food and environmental safety, with a focus on the categories of photoactive materials, from single semiconductor to semiconductor–semiconductor heterojunction, and signaling mechanisms of PEC sensing platforms, including oxidation of pesticides, steric hindrance, generation/decrease in sacrificial agents, and introduction/release of photoactive materials. Additionally, this review will offer insights into future prospects and confrontations, thereby contributing novel perspectives to this evolving domain.

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Section: Steric Hindrancementioning

confidence: 99%

Section: Steric Hindrancementioning

confidence: 99%

Recent Progress in Photoelectrochemical Sensing of Pesticides in Food and Environmental Samples: Photoactive Materials and Signaling Mechanisms

Song,

Chen,

et al. 2024

Molecules

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show abstract

“…Bi 2 S 3 belongs to a family of metal chalcogenides in a class of non-toxic semiconductor materials [ 28 ], whose importance in photovoltaic and thermoelectric applications is well recognized [ 29 ]. Bi 2 S 3 is an excellent photoelectric material because of its moderate bandgap width and low binding rate of photogenerated electron holes, which can effectively convert light energy into electrical energy [ 30 ]. Therefore, Bi 2 S 3 was selected as the base material of the immunosensor in this work.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive Photoelectrochemical Immunoassay Strategy Based on Bi2S3/Ag2S for the Detection of the Inflammation Marker Procalcitonin

Zhao

Wang

et al. 2023

Biosensors

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As an inflammatory marker, procalcitonin (PCT) is more representative than other traditional inflammatory markers. In this work, a highly efficient photoelectrochemical (PEC) immunosensor was constructed based on the photoactive material Bi2S3/Ag2S to realize the sensitive detection of PCT. Bi2S3 was prepared by a hydrothermal method, and Ag2S quantum dots were deposited on the ITO/Bi2S3 surface via in situ reduction. Bi2S3 is a kind of admirable photoelectric semiconductor nanomaterial on account of its moderate bandgap width and low binding rate of photogenerated electron holes, which can effectively convert light energy into electrical energy. Therefore, based on the energy level matching principle of Bi2S3 and Ag2S, a labeled Bi2S3/Ag2S PEC immunosensor was constructed, and the sensitive detection of PCT was successfully established. The linear detection range of the PEC immunosensor was 0.50 pg∙mL−1 to 50 ng∙mL−1, and the minimum detection limit was 0.18 pg∙mL−1. Compared with the traditional PEC strategy, the proposed PEC immunosensor is simple, convenient, and has good anti-interference, sensitivity, and specificity, which could provide a meaningful theoretical basis and reference value for the clinical detection of PCT.

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A photoelectrochemical sensor based on In2O3/In2S3/ZnIn2S4 ternary Z-scheme heterojunction for ultrasensitive detection of dopamine in sweat

Zhou,

Xiao,

Tian

et al. 2024

Microchim Acta

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Chitosan-based molecularly imprinted photoelectric sensor with ZnO/Bi2O3/Bi2S3 sensing layer for thiamethoxam determination

Cited by 10 publications

References 37 publications

Recent Progress in Photoelectrochemical Sensing of Pesticides in Food and Environmental Samples: Photoactive Materials and Signaling Mechanisms

Recent Progress in Photoelectrochemical Sensing of Pesticides in Food and Environmental Samples: Photoactive Materials and Signaling Mechanisms

Ultrasensitive Photoelectrochemical Immunoassay Strategy Based on Bi2S3/Ag2S for the Detection of the Inflammation Marker Procalcitonin

A photoelectrochemical sensor based on In2O3/In2S3/ZnIn2S4 ternary Z-scheme heterojunction for ultrasensitive detection of dopamine in sweat

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