MOF-derived sandwich-structured dual Z-Scheme Co9S8@ZnIn2S4/CdSe hollow nanocages heterojunction: Target-induced ultrasensitive photoelectrochemical sensing of chlorpyrifos

Xu, Ben-Fang; Zhang, Jin; Tanjung, Aisyah Protonia; Xu, Fan; Wang, Ai-Jun; Mei, Li-Ping; Song, Pei; Feng, Jiu-Ju

doi:10.1016/j.bios.2024.116324

Biosensors and Bioelectronics

2024

DOI: 10.1016/j.bios.2024.116324

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MOF-derived sandwich-structured dual Z-Scheme Co9S8@ZnIn2S4/CdSe hollow nanocages heterojunction: Target-induced ultrasensitive photoelectrochemical sensing of chlorpyrifos

Ben-Fang Xu,

Jin Zhang,

Aisyah Protonia Tanjung

et al.

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Cited by 7 publications

References 37 publications

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Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure

Chi,

Ju,

et al. 2024

Adv Funct Materials

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The organic photoelectrochemical transistor (OPECT) biosensing relies solely on a singular signal readout inherently, which restrains the precision and dependability nestled within pertinent biological measurements. Herein, a high‐precision magnetic assisted OPECT and smartphone colorimetric (SCL) dual‐mode biosensing platform is first established for detecting harmful algal toxin okadaic acid (OA) by biocatalytic reaction. MXene@SnO2‐Ce‐MOF (MXSnO/Ce‐MOF) Z‐scheme heterojunctions with abundant oxygen vacancies are prepared as photoactive materials. Initially, in the presence of OA, the coupling of trigger DNA (tDNA) to magnetic beads (MBs) via anchor DNA (aDNA) is released through the interaction of the target analyte with the aptamer. Subsequently, the carried tDNA triggers HCR between the two hairpin sequences, producing long double helix chains to capture glucose oxidase (GOx). The obtained GOx supernatant catalyzes glucose to produce H2O2, which can oxidize Ce‐MOF, leading to the alteration of electrode color and a significant decrease in the overall photocurrent of MXSnO/Ce‐MOF. Crucially, the novel OPECT‐SCL biosensor exhibits excellent sensitivity and precision, boasting detection thresholds as low as 42.9 pM and 1.2 nM, respectively, and accomplishes the automated detection of OA within real samples. The proposed OPECT‐SCL dual‐signal measurement model constitutes a sensitive, portable, and precise platform for the quantification of marine toxins.

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Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure

Chi,

Ju,

et al. 2024

Adv Funct Materials

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show abstract

Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching

Wang,

Wan

et al. 2025

Biosensors and Bioelectronics

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HOF-derived Step-Scheme FJU-200@CdSe heterojunction: A photoelectrochemical sensing platform for sensitive detection of EGFR

Hai,

Yi,

Bai

et al. 2025

Biosensors and Bioelectronics

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MOF-derived sandwich-structured dual Z-Scheme Co9S8@ZnIn2S4/CdSe hollow nanocages heterojunction: Target-induced ultrasensitive photoelectrochemical sensing of chlorpyrifos

Cited by 7 publications

References 37 publications

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure

Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching

HOF-derived Step-Scheme FJU-200@CdSe heterojunction: A photoelectrochemical sensing platform for sensitive detection of EGFR

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MOF-derived sandwich-structured dual Z-Scheme Co9S8@ZnIn2S4/CdSe hollow nanocages heterojunction: Target-induced ultrasensitive photoelectrochemical sensing of chlorpyrifos

Cited by 7 publications

References 37 publications

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO2 Z‐Scheme Heterostructure

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO2 Z‐Scheme Heterostructure

Smartphone-based point-of-care photoelectrochemical immunoassay coupling with ascorbic acid-triggered photocurrent-polarity conversion switching

HOF-derived Step-Scheme FJU-200@CdSe heterojunction: A photoelectrochemical sensing platform for sensitive detection of EGFR

Contact Info

Product

Resources

About

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure

Integrated OPECT and Smartphone Colorimetry Dual‐Mode Detection of Okadaic Acid Based on Ce‐MOF Modified MXene@SnO₂ Z‐Scheme Heterostructure