TY - JOUR
T1 - Super-porous Pt/CuO/Pt hybrid platform for ultra-sensitive and selective H2O2 detection
AU - Mandavkar, Rutuja
AU - Kulkarni, Rakesh
AU - Ahasan Habib, Md
AU - Burse, Shalmali
AU - Lin, Shusen
AU - Kunwar, Sundar
AU - Najar, Adel
AU - Assa Aravindh, S.
AU - Jeong, Jae Hun
AU - Lee, Jihoon
N1 - Funding Information:
Financial support by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (no. NRF-2019R1A2C4069438 and NRF-2018R1A6A1A03025242, NRF-2020R1I1A1A01060937), the NNSA’s Laboratory Directed Research and Development Program of USA (89233218CNA000001), United Arab Emirates University (no. 31S464) and the research grant of Kwangwoon University in 2022 is gratefully acknowledged. CSC-IT center for Science, Finland is acknowledged for the computational resources.
Funding Information:
Financial support by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (no. NRF-2019R1A2C4069438 and NRF-2018R1A6A1A03025242, NRF-2020R1I1A1A01060937), the NNSA's Laboratory Directed Research and Development Program of USA (89233218CNA000001), United Arab Emirates University (no. 31S464) and the research grant of Kwangwoon University in 2022 is gratefully acknowledged. CSC-IT center for Science, Finland is acknowledged for the computational resources.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/8/15
Y1 - 2022/8/15
N2 - A super-porous Pt/CuO/Pt hybrid electrode is demonstrated with extremely high sensing performance parameters for the hydrogen peroxide (H2O2) detection. A unique physiochemical approach is adapted for the fabrication of 3-D super-porous Pt/CuO/Pt sensing platform. The super-porous Pt/CuO/Pt hybrid platform demonstrates a superior sensitivity of 16,694 µA mM−1 cm−2 with a limit of detection of 2.91 nM (S/N = 3). It also demonstrates an excellent selectivity against the interfering molecules such as NaCl, fructose, ascorbic acid, citric acid, dopamine and glucose with a wide linear range. The demonstrated performance ranks the Pt/CuO/Pt hybrid platform as one of the best H2O2 sensors as summarized in the Table 2. The super-porous CuO layer is fabricated by a dynamic hydrogen bubbling technique of electrochemical deposition and metallic Pt NP decoration is achieved by the physical vapor deposition (PVD) and post-annealing. The super-porous CuO layer offers a drastically improved electrochemical active surface area, and the Pt NP decoration offers a significantly improved conductivity and improved charge accumulation for the H2O2 reduction. The DFT simulations confirm the predominance of CuO over Cu2O and Pt over Pd for the H2O2 detection based on the adsorption energy, density of states and charge accumulation calculations.
AB - A super-porous Pt/CuO/Pt hybrid electrode is demonstrated with extremely high sensing performance parameters for the hydrogen peroxide (H2O2) detection. A unique physiochemical approach is adapted for the fabrication of 3-D super-porous Pt/CuO/Pt sensing platform. The super-porous Pt/CuO/Pt hybrid platform demonstrates a superior sensitivity of 16,694 µA mM−1 cm−2 with a limit of detection of 2.91 nM (S/N = 3). It also demonstrates an excellent selectivity against the interfering molecules such as NaCl, fructose, ascorbic acid, citric acid, dopamine and glucose with a wide linear range. The demonstrated performance ranks the Pt/CuO/Pt hybrid platform as one of the best H2O2 sensors as summarized in the Table 2. The super-porous CuO layer is fabricated by a dynamic hydrogen bubbling technique of electrochemical deposition and metallic Pt NP decoration is achieved by the physical vapor deposition (PVD) and post-annealing. The super-porous CuO layer offers a drastically improved electrochemical active surface area, and the Pt NP decoration offers a significantly improved conductivity and improved charge accumulation for the H2O2 reduction. The DFT simulations confirm the predominance of CuO over Cu2O and Pt over Pd for the H2O2 detection based on the adsorption energy, density of states and charge accumulation calculations.
KW - DFT simulation
KW - HO detectors
KW - Hybrid Pt/CuO/Pt platform
KW - Super porous CuO
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U2 - 10.1016/j.apsusc.2022.153454
DO - 10.1016/j.apsusc.2022.153454
M3 - Article
AN - SCOPUS:85129530234
SN - 0169-4332
VL - 593
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 153454
ER -