Ye, Cui and Xu, Fan and Ullah, Fateh and Wang, Minqiang (2022) CdS/Ti₃C₂ heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu²⁺. Analytical and Bioanalytical Chemistry, 414 (12). pp. 3571-3580. ISSN 1618-2642. doi:10.1007/s00216-021-03870-y. https://resolver.caltech.edu/CaltechAUTHORS:20220126-933583800
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Abstract
Photoelectrochemical (PEC) detection as a potential development strategy for Cu²⁺ ion sensor has arisen extensive attention. Herein, CdS/Ti₃C₂ heterostructure was synthesized by electrostatically driven assembly and hydrothermal method. On the basis of a CdS/Ti₃C₂ heterostructure, a novel anodic PEC sensing platform was constructed for highly sensitive detection of trace amount of Cu²⁺. Carrier transport at the interface of CdS/Ti₃C₂ heterostructure was tremendously improved, due to the generation of effective Schottky junctions. Under visible light irradiation, the CdS/Ti₃C₂ heterostructure-modified PEC platform exhibits great anode photocurrent signal, and the formation of CuₓS reduces the PEC response with the presence of Cu²⁺ as a representative analyte. Thus, the linear response of Cu²⁺ ranges from 0.1 nM to 10 µM and the limits of detection (LOD, 0.05 nM) are obtained, which is lower than that of WHO’s Guidelines for Drinking-water Quality (30 μM). This idea of component reconstitution provides a new paradigm for the design of advanced PEC sensors.
| Item Type: | Article | |||||||||
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| Alternate Title: | CdS/Ti3C2 heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu2+ | |||||||||
| Additional Information: | © Springer-Verlag GmbH Germany, part of Springer Nature 2021. Received 15 November 2021; Revised 20 December 2021; Accepted 23 December 2021; Published 04 January 2022. This work was supported by the National Natural Science Foundation of China (Grant No. 21904116), Natural Science Foundation of Zhejiang Provincial (LY22B050007), and the China Postdoctoral Science Foundation (2021M692863). The authors declare no competing interests. | |||||||||
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| Subject Keywords: | Ti3C2 MXene; Photoelectrochemical; Schottky junction; Cu (II) sensing | |||||||||
| Issue or Number: | 12 | |||||||||
| DOI: | 10.1007/s00216-021-03870-y | |||||||||
| Record Number: | CaltechAUTHORS:20220126-933583800 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20220126-933583800 | |||||||||
| Official Citation: | Ye, C., Xu, F., Ullah, F. et al. CdS/Ti3C2 heterostructure–based photoelectrochemical platform for sensitive and selective detection of trace amount of Cu2+. Anal Bioanal Chem 414, 3571–3580 (2022). https://doi.org/10.1007/s00216-021-03870-y | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 113117 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Tony Diaz | |||||||||
| Deposited On: | 28 Jan 2022 19:06 | |||||||||
| Last Modified: | 27 Apr 2022 19:28 |
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