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- W2800104041 abstract "A CdS sensitized hydrogenated TiO2 nanorod arrays ([email protected]) film was developed for the selective visible-light-driven photoelectrochemical (PEC) sensing of Cu2+ ion. The sensitive determination was based on extremely high PEC activity of the as-prepared [email protected], i.e, the photocurrent density of the as-prepared [email protected] electrode could reach up to 10.1 mA cm−2, which was 33.7 times higher than that of the pure HTNRs film. Dramatic photocurrent quenching was observed upon immersion of the [email protected] electrode into Cu2+ solution. The analytical principle is based on significant quenching of photocurrent, i.e, the formation of CuS and subsequent CuxS (x = 1, 2) produced on the electrode surface under illumination reduces the absorption of light and boosts the electron-hole recombination, respectively. Due to the large photocurrent density of the as-prepared [email protected] and the high selectivity of chemical recognition reaction between CdS and Cu2+, the photocurrent quenching of CuxS, is proposed to be sensitive and selective in detecting Cu2+ ion. The linear detection range could be 0.8 nM to 82.0 μM with the detection limit of 0.3 nM via controlling recognition reaction time to be 7 min. The sensor was also successfully applied in the detecting Cu2+ ion in real samples such as tap water, lake water and urine." @default.
- W2800104041 created "2018-05-17" @default.
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- W2800104041 date "2018-10-01" @default.
- W2800104041 modified "2023-10-03" @default.
- W2800104041 title "Visible-light-driven photoelectrochemical determination of Cu2+ based on CdS sensitized hydrogenated TiO2 nanorod arrays" @default.
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- W2800104041 doi "https://doi.org/10.1016/j.snb.2018.05.056" @default.
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