TY - JOUR
T1 - An iridium-decorated metal–organic framework for electrocatalytic oxidation of nitrite
AU - Chang, Tzu En
AU - Chuang, Cheng Hsun
AU - Kung, Chung Wei
N1 - Funding Information:
This project was sponsored by the Ministry of Science and Technology (MOST) of Taiwan, under project MOST 107-2218-E-006-054-MY3. We are grateful for support from the Yushan Young Scholar Program, under the Ministry of Education (MOE), Taiwan. This article was also supported in part by the Higher Education Sprout Project, MOE, Taiwan to the Headquarters of University Advancement at National Cheng Kung University.
Publisher Copyright:
© 2020 The Author(s)
PY - 2021/1
Y1 - 2021/1
N2 - Spatially dispersed redox-active iridium sites are immobilized throughout the porous framework of a zirconium-based metal–organic framework (MOF), UiO-66, to enable charge hopping in the MOF. The resulting iridium sites within UiO-66 not only permit redox hopping-based electron transport within the MOF in aqueous electrolytes, but also exhibit electrocatalytic activity for the oxidation of nitrite. The pH of the electrolyte for this electrocatalysis is optimized, and the electrocatalytic mechanism occurring on the Ir-decorated UiO-66 thin films is investigated. The material is further applied for amperometric nitrite sensing in aqueous solutions. Owing to its high porosity, the Ir-decorated UiO-66 achieves a good sensitivity (168.8 μA/mM-cm2) for detecting nitrite with a low limit of detection (0.41 μM).
AB - Spatially dispersed redox-active iridium sites are immobilized throughout the porous framework of a zirconium-based metal–organic framework (MOF), UiO-66, to enable charge hopping in the MOF. The resulting iridium sites within UiO-66 not only permit redox hopping-based electron transport within the MOF in aqueous electrolytes, but also exhibit electrocatalytic activity for the oxidation of nitrite. The pH of the electrolyte for this electrocatalysis is optimized, and the electrocatalytic mechanism occurring on the Ir-decorated UiO-66 thin films is investigated. The material is further applied for amperometric nitrite sensing in aqueous solutions. Owing to its high porosity, the Ir-decorated UiO-66 achieves a good sensitivity (168.8 μA/mM-cm2) for detecting nitrite with a low limit of detection (0.41 μM).
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U2 - 10.1016/j.elecom.2020.106899
DO - 10.1016/j.elecom.2020.106899
M3 - Article
AN - SCOPUS:85097875035
VL - 122
JO - Electrochemistry Communications
JF - Electrochemistry Communications
SN - 1388-2481
M1 - 106899
ER -