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Article

Hydrogen Peroxide Detection by Super-Porous Hybrid CuO/Pt NP Platform: Improved Sensitivity and Selectivity

Department of Electronic Engineering, College of Electronics and Information, Kwangwoon University, Nowon-gu, Seoul 01897, Korea
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Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(10), 2034; https://doi.org/10.3390/nano10102034
Received: 9 September 2020 / Revised: 13 October 2020 / Accepted: 13 October 2020 / Published: 15 October 2020
(This article belongs to the Special Issue Nanotechnologies and Nanomaterials: Selected Papers from CCMR)
A super-porous hybrid platform can offer significantly increased number of reaction sites for the analytes and thus can offer advantages in the biosensor applications. In this work, a significantly improved sensitivity and selectivity of hydrogen peroxide (H2O2) detection is demonstrated by a super-porous hybrid CuO/Pt nanoparticle (NP) platform on Si substrate as the first demonstration. The super-porous hybrid platform is fabricated by a physiochemical approach combining the physical vapor deposition of Pt NPs and electrochemical deposition of super-porous CuO structures by adopting a dynamic hydrogen bubble technique. Under an optimized condition, the hybrid CuO/Pt biosensor demonstrates a very high sensitivity of 2205 µA/mM·cm2 and a low limit of detection (LOD) of 140 nM with a wide detection range of H2O2. This is meaningfully improved performance as compared to the previously reported CuO-based H2O2 sensors as well as to the other metal oxide-based H2O2 sensors. The hybrid CuO/Pt platform exhibits an excellent selectivity against other interfering molecules such as glucose, fructose, dopamine, sodium chloride and ascorbic acid. Due to the synergetic effect of highly porous CuO structures and underlying Pt NPs, the CuO/Pt architecture offers extremely abundant active sites for the H2O2 reduction and electron transfer pathways. View Full-Text
Keywords: H2O2 detection; super-porous CuO/Pt electrode; dynamic hydrogen bubble technique; biosensor kit H2O2 detection; super-porous CuO/Pt electrode; dynamic hydrogen bubble technique; biosensor kit
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MDPI and ACS Style

Kulkarni, R.; Kunwar, S.; Mandavkar, R.; Jeong, J.-H.; Lee, J. Hydrogen Peroxide Detection by Super-Porous Hybrid CuO/Pt NP Platform: Improved Sensitivity and Selectivity. Nanomaterials 2020, 10, 2034. https://doi.org/10.3390/nano10102034

AMA Style

Kulkarni R, Kunwar S, Mandavkar R, Jeong J-H, Lee J. Hydrogen Peroxide Detection by Super-Porous Hybrid CuO/Pt NP Platform: Improved Sensitivity and Selectivity. Nanomaterials. 2020; 10(10):2034. https://doi.org/10.3390/nano10102034

Chicago/Turabian Style

Kulkarni, Rakesh, Sundar Kunwar, Rutuja Mandavkar, Jae-Hun Jeong, and Jihoon Lee. 2020. "Hydrogen Peroxide Detection by Super-Porous Hybrid CuO/Pt NP Platform: Improved Sensitivity and Selectivity" Nanomaterials 10, no. 10: 2034. https://doi.org/10.3390/nano10102034

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