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- W4226146841 abstract "Developing stable and highly efficient photoactive materials is desirable to their extensive application in photoelectrochemical (PEC) sensors. Herein, a nickel–cobalt layered double hydroxides (NiCo-LDHs) cocatalyst-modified TiO2 nanotube arrays (TiO2NTAs) photoelectrode (NiCo-LDHs/TiO2NTAs/Ti) was fabricated and used to construct a PEC sensing platform for hexavalent chromium, Cr(VI), detection. The resultant NiCo-LDHs/TiO2NTAs/Ti showed higher photocatalytic water-splitting activity than the pristine TiO2NTAs/Ti, and an enhanced anodic photocurrent was realized at a potential of 0 V (vs Ag/AgCl). On the basis of changes of the photocurrent signal induced by the interaction between photogenerated electrons and Cr(VI) as an effective electron scavenger in solution, a PEC sensor for Cr(VI) detection was developed and showed a linearly decreased photocurrent with increasing Cr(VI) concentration between 0.5−20 μM, 20−400 μM, and 400−1800 μM with a 0.12 μM detection limit under the optimized test conditions. The method showed simplicity, excellent selectivity and sensitivity, a wide linearity range, and high stability. The prepared PEC sensor succeeded in the Cr(VI) detection of river water and tap water samples, and it presented good applicability." @default.
- W4226146841 created "2022-05-05" @default.
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- W4226146841 date "2022-04-08" @default.
- W4226146841 modified "2023-10-18" @default.
- W4226146841 title "A Photoelectrochemical Sensor Based on TiO<sub>2</sub> Nanotube Arrays Decorated with Nickel-Cobalt Layered Double Hydroxides for the Effective and Sensitive Detection of Chromium(VI)" @default.
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- W4226146841 doi "https://doi.org/10.1021/acsanm.2c00521" @default.
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