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- W3209971676 abstract "Improving light harvesting behavior and recognition sites of sensor is an effective way to achieve highly sensitive and selective detection of nano-enzymatic photoelectrochemical (PEC) L-cysteine (Cyst). In this work, the Bi2MoO6-TiO2 composite (BMO-HTNTs) with honeycomb TiO2 nanotube arrays (HTNTs) as light harvesting unit and Bi2MoO6 nanoparticles (BMO) as recognition unit was prepared. The typical honeycomb-nanoparticle heterostructure between HTNTs and BMO improves the separation efficiency of the electron-hole pairs. Moreover, BMO nanoparticles fully dispersed on HTNTs with large specific surface area provide more sites for Cyst recognition. The composite exhibited the enhanced light absorption and higher photocurrent density at 0.2 V (vs. Ag/AgCl), which was 4 times than that of HTNTs under simulated light. Ingeniously, Cyst can not only be specifically recognized through the Bi-S bonds but also act as electron donor to scavenge the photogenerated holes of BMO-HTNTs, resulting in the increase of PEC responses. The PEC sensor showed superior analytical performance for Cyst detection with two linear regression equations in the range of 500 nM to 500 μM and a detection limit of 150 nM. The results of the enzyme-free sensor on practical urine and serum samples demonstrated its promising application in biological monitoring." @default.
- W3209971676 created "2021-11-08" @default.
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- W3209971676 date "2021-01-01" @default.
- W3209971676 modified "2023-10-16" @default.
- W3209971676 title "A Nano-Enzymatic Photoelectrochemical L-Cysteine Biosensor Based on Bi2MoO6 Modified Honeycomb TiO2 Nanotube Arrays Composite" @default.
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- W3209971676 doi "https://doi.org/10.2139/ssrn.3929277" @default.
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