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Nde DT, Park J, Lee SH, Lee J, Lee HJ. Ultrawide Hydrazine Concentration Monitoring Sensor Comprising Ir-Ni Nanoparticles Decorated with Multi-Walled Carbon Nanotubes in On-Site Alkaline Fuel Cell Operation. ChemSusChem 2023; 16:e202201608. [PMID: 36480310 DOI: 10.1002/cssc.202201608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 10/21/2022] [Indexed: 06/17/2023]
Abstract
A highly sensitive amperometric hydrazine monitoring sensor offering an ultrawide dynamic range of 5 μM to 1 M in alkaline media (e. g., 1 M KOH) was developed via co-electrodepositing iridium-nickel alloy nanoparticles (NPs) functionalized with multi-walled carbon nanotubes (Ir-Ni-MWCNTs) on a disposable screen-printed carbon electrode. The synergistic interaction of MWCNTs with Ir-Ni alloy NPs resulted in enlarged active surface area, rapid electron transfer, and alkaline media stability with an onset potential of -0.12 V (vs. Ag/AgCl) toward hydrazine oxidation. A limit of detection for hydrazine was 0.81 μM with guaranteed reproducibility, repeatability, and storage stability alongside a superb selectivity toward ethanolamine, urea, dopamine, NaBH4 , NH4 OH, NaNO2 , and Na2 CO3 . The sensor was finally applied to on-site monitoring of the carbon-free hydrazine concentration at the anode and cathode of a hydrazine fuel cell, providing more insight into the hydrazine oxidation process during cell operation.
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Affiliation(s)
- Dieudonne Tanue Nde
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 41566, Republic of Korea
| | - Jihyeon Park
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
- International Future Research Center of Chemical Energy Storage and Conversion Processes (iFRC-CHESS), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Sang Hyuk Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 41566, Republic of Korea
| | - Jaeyoung Lee
- School of Earth Sciences and Environmental Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
- International Future Research Center of Chemical Energy Storage and Conversion Processes (iFRC-CHESS), Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
- Ertl Center for Electrochemical and Catalysis, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Hye Jin Lee
- Department of Chemistry and Green-Nano Materials Research Center, Kyungpook National University, 80 Daehakro, Buk-gu, Daegu-city, 41566, Republic of Korea
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Nde DT, Jhung SH, Lee HJ. Electrocatalytic Determination of Hydrazine Concentrations with Polyelectrolyte Supported AuCo Nanoparticles on Carbon Electrodes. Catal Today 2022. [DOI: 10.1016/j.cattod.2022.03.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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