Self-powered electrochromic sensing for visual determination of PSA in serum using PB as an indicator

Qin, Lei; Wang, Yu; Dong, Wanxin; Sun, Haitao; Lv, Jiaxin; Li, He

doi:10.1016/j.jelechem.2019.03.015

Cited by 13 publications

(2 citation statements)

References 31 publications

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“…This BFC-based example was also hybridized with a colorimetric sensor supported by color changes observed by the naked eye when detecting biomarkers. A self-powered electrochromic visual sensing system for detecting prostate specific antigen (PSA) was also developed toward wearable applications . The linear range of detection was 0.1–50 ng/mL PSA with a detection limit of 0.03 ng mL –1 .…”

Section: New Wearable Modalitiesmentioning

confidence: 99%

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

et al. 2019

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Section: New Wearable Modalitiesmentioning

confidence: 99%

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

et al. 2019

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“…The key elements for such devices are a photoactive working electrode and an electrochromic counter electrode, where a rational choice is required for electrode materials to achieve a sufficient photovoltaic output and the corresponding high-contrast color change. In the past few years, efficient electrode material pairs have been reported including Bi 2 S 3 -Prussian blue (PB), Ni/FeOOH/BiVO 4 -PB, g-C 3 N 4 /Au/TiO 2 -PB, N749/TiO 2 –Ni/WO 3 , and so forth, and various disease-related biomarkers including carcinoembryonic antigens, prostate-specific antigens, and pyrophosphate ions were successfully detected. Nonetheless, with the ever-growing emergency for environmental protection, more effective material pairs are still needed to meet the requirements for diverse analytical targets, especially appropriate for environmental pollutants.…”

Section: Introductionmentioning

confidence: 99%

Dual-Modal Photoelectrochemical and Visualized Detection of Copper Ions

Zhang

Dai

et al. 2022

ACS Omega

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Copper is one of the extensively utilized heavy metals in modern industry and can be easily released into the environment due to high solubility of copper ions (Cu2+). Its percolation in water and accumulation along the food chain pose a serious threat to human health. Hence, it is of great significance to explore a novel, facile, and sensitive detection method for Cu2+. Based on the intriguing photo-to-electricity conversion process of CdS QDs, as well as desirable electrochromic property of WO3 NFs, a dual-modal photoelectrochemical (PEC) and visualized detection platform for Cu2+ is fabricated. The electrochromic WO3 NFs act as a display for the Cu2+ concentration, of which the color change could be observed directly by the naked eye, while the PEC signal provides accurate data for further analysis. In this work, a sensitive detection of Cu2+ in the range of 1 × 10–5 to 5 × 10–4 M is achieved, with a detection limit of 3.2 × 10–6 M. The dual-modal analysis gives more choices for signal readouts with enhanced quantification reliability, which is adaptive for diverse application scenarios, especially for on-site investigation. This protocol offers a prototype for quick and reliable detection of the Cu2+ concentrations, and is promising for other environmental pollutants.

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Photoelectrochemical Immunosensor for Sensitive Quantification of Prostate Specific Antigen in Human Serum Samples Exploiting BaTiO₃−CdS

et al. 2020

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A novel label‐free photoelectrochemical immunosensor was developed for the determination of prostate‐specific antigen (PSA) based on fluorine‐doped tin oxide (FTO) electrode modified with barium titanate and cadmium sulfide (BaTiO3−CdS/FTO). The photoelectrochemical current density of the BaTiO3 platform sensitized with CdS for the ascorbic acid (AA) donor molecule was higher than that observed in the absence of CdS. The BaTiO3−CdS/FTO platform was modified with PSA antibodies to produce the anti‐PSA/BaTiO3−CdS/FTO immunosensor, which was incubated in solutions of PSA to inhibit the photocurrent density of the immunosensor for AA. The photocurrent density of the anti‐PSA/BaTiO3−CdS/FTO immunosensor presented a linear relationship with the logarithm of the PSA concentration ranging from 1 pg mL−1 to 1 μg mL−1 with good sensitivity. The proposed method presented an experimental detection limit of 1 pg mL−1 (S/N=3). The immunosensor was successfully employed for the determination of PSA in blood serum samples, with recoveries between 98.7 %–104.4 %.

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Self-powered electrochromic sensing for visual determination of PSA in serum using PB as an indicator

Cited by 13 publications

References 31 publications

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

Dual-Modal Photoelectrochemical and Visualized Detection of Copper Ions

Photoelectrochemical Immunosensor for Sensitive Quantification of Prostate Specific Antigen in Human Serum Samples Exploiting BaTiO₃−CdS

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Self-powered electrochromic sensing for visual determination of PSA in serum using PB as an indicator

Cited by 13 publications

References 31 publications

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

Wearable Chemical Sensors: Emerging Systems for On-Body Analytical Chemistry

Dual-Modal Photoelectrochemical and Visualized Detection of Copper Ions

Photoelectrochemical Immunosensor for Sensitive Quantification of Prostate Specific Antigen in Human Serum Samples Exploiting BaTiO3−CdS

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Photoelectrochemical Immunosensor for Sensitive Quantification of Prostate Specific Antigen in Human Serum Samples Exploiting BaTiO₃−CdS