A highly stable acetylcholinesterase biosensor based on chitosan-TiO2-graphene nanocomposites for detection of organophosphate pesticides

Cui, Hui‐Fang; Wu, Wenwen; Li, Mengmeng; Song, Xiaojie; Lv, Yuanxu; Zhang, Tingting

doi:10.1016/j.bios.2017.07.068

Cited by 245 publications

(62 citation statements)

References 32 publications

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“…7.0 and slightly decreasing at pH 7.5. As reported, the optimum pH for AChE is 8.0-9.0 [41]; some biosensors based on rGO also report pH 7.0 as an optimum pH for buffer solution [42,43]. Hence, pH 7.0 was chosen for use in subsequent experiments.…”

Section: Optimization Of the Gc/rgo/ache Biosensor Parametersmentioning

confidence: 99%

Determination of carbamate pesticide in food using a biosensor based on reduced graphene oxide and acetylcholinesterase enzyme

Silva

Vanzela

Defavari

et al. 2018

Sensors and Actuators B: Chemical

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Food safety is a major concern for human health and wellbeing all over the world. A novel and sensitive biosensor based on reduced graphene oxide (rGO) and the enzyme acetylcholinesterase (AChE) was developed and applied for the detection of carbaryl in food samples. The glassy carbon/rGO/AChE biosensor was characterized morphologically and electrochemically using scanning electron microscopy and cyclic voltammetry/electrochemical impedance spectroscopy, respectively. Optimum differential pulse voltammetry conditions led to a nanomolar detection limit, and determination of carbaryl in tomato was achieved.

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Section: Optimization Of the Gc/rgo/ache Biosensor Parametersmentioning

confidence: 99%

Determination of carbamate pesticide in food using a biosensor based on reduced graphene oxide and acetylcholinesterase enzyme

Silva

Vanzela

Defavari

et al. 2018

Sensors and Actuators B: Chemical

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“…Au [30][31][32] and TiO 2 [24,33,34] have been widely applied as transducers in biosensors. This is due to their high stability, biocompatibility, high surface-to-volume ratio, and strong amplification effect on signals.…”

Section: Role Of Tio 2 Nanomaterials In Biosensormentioning

confidence: 99%

State-of-the-Art on Functional Titanium Dioxide-Integrated Nano-Hybrids in Electrical Biosensors

Nadzirah

Gopinath

Parmin

et al. 2020

Critical Reviews in Analytical Chemistry

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Biosensors operating based on electrical methods are being accelerated toward rapid and efficient detection that improve the performance of the device. Continuous study in nano-and material-sciences has led to the inflection with properties of nanomaterials that fit the trend parallel to the biosensor evolution. Advancements in technology that focuses on nano-hybrid are being used to develop biosensors with better detection strategies. In this sense, titanium dioxide (TiO 2) nanomaterials have attracted extensive interest in the construction of electrical biosensors. The formation of TiO 2 nano-hybrid as an electrical transducing material has revealed good results with high performance. The modification of the sensing portion with a combination (nano-hybrid form) of nanomaterials has produced excellent sensors in terms of stability, reproducibility, and enhanced sensitivity. This review highlights recent research advancements with functional TiO 2 nano-hybrid materials, and their victorious story in the construction of electrical biosensors are discussed. Future research directions with commercialization of these devices and their extensive utilizations are also discussed.

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“…Recently, Cui et al [ 86 ] reported the use of a nanocomposite to improve the stability of AChE electrochemical biosensors. A layer of reduced graphene oxide (rGO) was introduced onto a glassy carbon electrode, followed by deposition of a titanium dioxide (TiO 2 ) porous sol–gel film mixed with chitosan (CS), a bio-compatible polymer.…”

Section: Analytesmentioning

confidence: 99%

Nanomaterial enabled sensors for environmental contaminants

2018

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The need and desire to understand the environment, especially the quality of one’s local water and air, has continued to expand with the emergence of the digital age. The bottleneck in understanding the environment has switched from being able to store all of the data collected to collecting enough data on a broad range of contaminants of environmental concern. Nanomaterial enabled sensors represent a suite of technologies developed over the last 15 years for the highly specific and sensitive detection of environmental contaminants. With the promise of facile, low cost, field-deployable technology, the ability to quantitatively understand nature in a systematic way will soon be a reality. In this review, we first introduce nanosensor design before exploring the application of nanosensors for the detection of three classes of environmental contaminants: pesticides, heavy metals, and pathogens.

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A highly stable acetylcholinesterase biosensor based on chitosan-TiO2-graphene nanocomposites for detection of organophosphate pesticides

Cited by 245 publications

References 32 publications

Determination of carbamate pesticide in food using a biosensor based on reduced graphene oxide and acetylcholinesterase enzyme

Determination of carbamate pesticide in food using a biosensor based on reduced graphene oxide and acetylcholinesterase enzyme

State-of-the-Art on Functional Titanium Dioxide-Integrated Nano-Hybrids in Electrical Biosensors

Nanomaterial enabled sensors for environmental contaminants

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