A photoelectrochemical aptasensor for aflatoxin B1 detection based on an energy transfer strategy between Ce-TiO<sub>2</sub>@MoSe<sub>2</sub> and Au nanoparticles

Tang, Yunfei; Liu, Xiaoqiang; Zheng, Hejie; Yang, Liwei; Li, Lele; Zhang, Si; Zhou, Yanmei; Alwarappan, Subbiah

doi:10.1039/c9nr01960j

Cited by 63 publications

(12 citation statements)

References 48 publications

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“…Due to the strong carcinogenic effect of AFB1, PEC sensors based on different strategies were developed to detect AFB1. [148][149][150][151][152][153][154][155][156][157][158] Zhang et al fabricated a signal-on PEC aptasensor to detect AFB1. 148 The affinity reaction between AFB1 and the aptamer on the surface of the modified electrode results in the detachment of the AFB1 aptamer from the electrode's surface.…”

Section: Toxinsmentioning

confidence: 99%

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

et al. 2022

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The establishment of rapid and efficient contamination detection methods in agricultural fields is of great significance for safeguarding agricultural production and human health, and for ensuring the healthy development of agricultural industries. As a booming analytical method, photoelectrochemical (PEC) sensors, which combine the advantages of electrochemical analysis and optical analysis, have received increasing research attention. Due to the complete separation of the excitation source (light) and the detection signal (current), the background signal of PEC sensors is greatly decreased, and their sensitivity is high. This review aims to cover the advances in PEC sensors for contamination analysis in agricultural fields over the past five years, including analysis of heavy metals, antibiotics, pesticides, and toxins. The future prospects in this field are also discussed.

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Section: Toxinsmentioning

confidence: 99%

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

et al. 2022

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“…Therefore, RET provides a low signal background for "signal-on" PEC sensor. Due to the RET of semiconductor (CeÀ TiO 2 @MoSe 2 ) heterostructure and AuNPs, a sandwich structure for PEC biosensor was fabricated, in which RET can be destroyed by AFB1 to increase the photocurrent [83]. CoÀ WO 3 /AuNPs loaded with short DNA strands were immobilized on the ITO to construct another aptamers-PEC biosensor [84].…”

Section: Non-competitive Type Of "Signal-on" Pec Biosensorsmentioning

confidence: 99%

Mycotoxins Detection Based on Electrochemical Approaches

et al. 2021

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Electrochemical biosensors have attracted much attention in mycotoxin bioanalysis. In this review, three electrochemical biosensor technologies for mycotoxins were reviewed, including general electrochemistry, photoelectrochemistry, and electrochemiluminescence. Based on the classification of multiple electrochemical detection methods, the design schemes, recognition mechanism and probe materials were described in detail. Moreover, the characteristics and limitations of these electrochemical biosensors were summarized. The challenges and future trends of electrochemical biosensor development in mycotoxin bioanalysis were also briefly discussed in the end. This review is expected to provide some inspirations for point-of-care testing in electrochemical sensors for mycotoxins and further electrochemical analysis application.

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“…Among the aflatoxins, AFB1 is considered the most toxic aflatoxin, and can cause cancers, such as hepatocellular carcinoma. Various 2D nanomaterial-based electrochemical biosensors have been constructed for detecting AFB 1 in various matrixes [96][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113]. Srivastava et al have developed a series of functionalized GO nanocomposite-based electrochemical biosensors for profiling AFB 1 in foods since they developed the first rGO-based AFB 1 immunosensor through the covalent conjugation of the monoclonal anti-AFB1 antibodies onto an rGO modified indium tin oxide (ITO) electrode in 2013 [96][97][98][99].…”

Section: Aflatoxinsmentioning

confidence: 99%

Two-Dimensional Layered Nanomaterial-Based Electrochemical Biosensors for Detecting Microbial Toxins

Jian

et al. 2019

Toxins

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Toxin detection is an important issue in numerous fields, such as agriculture/food safety, environmental monitoring, and homeland security. During the past two decades, nanotechnology has been extensively used to develop various biosensors for achieving fast, sensitive, selective and on-site analysis of toxins. In particular, the two dimensional layered (2D) nanomaterials (such as graphene and transition metal dichalcogenides (TMDs)) and their nanocomposites have been employed as label and/or biosensing transducers to construct electrochemical biosensors for cost-effective detection of toxins with high sensitivity and specificity. This is because the 2D nanomaterials have good electrical conductivity and a large surface area with plenty of active groups for conjugating 2D nanomaterials with the antibodies and/or aptamers of the targeted toxins. Herein, we summarize recent developments in the application of 2D nanomaterial-based electrochemical biosensors for detecting toxins with a particular focus on microbial toxins including bacterial toxins, fungal toxins and algal toxins. The integration of 2D nanomaterials with some existing antibody/aptamer technologies into electrochemical biosensors has led to an unprecedented impact on improving the assaying performance of microbial toxins, and has shown great promise in public health and environmental protection.

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A photoelectrochemical aptasensor for aflatoxin B1 detection based on an energy transfer strategy between Ce-TiO₂@MoSe₂ and Au nanoparticles

Abstract: In this work, a novel photoelectrochemical (PEC) aptasensor was developed for the sensitive detection of aflatoxin B1 (AFB1) based on a resonance energy transfer strategy between the Ce-TiO2@MoSe2 heterostructure and Au nanoparticles (AuNPs).

Cited by 63 publications

References 48 publications

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

Mycotoxins Detection Based on Electrochemical Approaches

Two-Dimensional Layered Nanomaterial-Based Electrochemical Biosensors for Detecting Microbial Toxins

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A photoelectrochemical aptasensor for aflatoxin B1 detection based on an energy transfer strategy between Ce-TiO2@MoSe2 and Au nanoparticles

Abstract: In this work, a novel photoelectrochemical (PEC) aptasensor was developed for the sensitive detection of aflatoxin B1 (AFB1) based on a resonance energy transfer strategy between the Ce-TiO2@MoSe2 heterostructure and Au nanoparticles (AuNPs).

Cited by 63 publications

References 48 publications

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

Research progress on photoelectrochemical sensors for contamination analysis in agricultural fields

Mycotoxins Detection Based on Electrochemical Approaches

Two-Dimensional Layered Nanomaterial-Based Electrochemical Biosensors for Detecting Microbial Toxins

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A photoelectrochemical aptasensor for aflatoxin B1 detection based on an energy transfer strategy between Ce-TiO₂@MoSe₂ and Au nanoparticles