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Nomura Y, Inoue D, Moritomo Y. Temperature switch of electrochemical Seebeck coefficient of Fe 2+/Fe 3+ via formation of [FeCl 4] 2-/[FeCl 4] . RSC Adv 2023; 13:3971-3975. [PMID: 36756564 PMCID: PMC9890644 DOI: 10.1039/d2ra07886d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 01/19/2023] [Indexed: 01/28/2023] Open
Abstract
The electrochemical Seebeck coefficient (α = dV/dT; V and T are the redox potential and temperature, respectively) is important parameter for thermoelectric conversion. Here, we found that α of Fe2+/Fe3+ in dimethyl sulfoxide (DMSO) with small amount of 19 M LiCl aqueous solution exhibits a crossover behavior from 1.4 mV K-1 (20 °C ≤ T ≤ 40 °C) to ≈0 mV K-1 (50 °C ≤ T ≤ 80 °C). The molar absorption (ε) spectra revealed that the crossover is ascribed to the transformation of the dominant Fe3+ complex from [FeL6]3+ (L is solvent molecule) to [FeCl4]-.
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Affiliation(s)
- Yunika Nomura
- Graduate School of Pure & Applied Science, University of Tsukuba Tennodai 1-1-1 Tsukuba Ibaraki 305-8571 Japan
| | - Dai Inoue
- Graduate School of Pure & Applied Science, University of Tsukuba Tennodai 1-1-1 Tsukuba Ibaraki 305-8571 Japan
| | - Yutaka Moritomo
- Graduate School of Pure & Applied Science, University of Tsukuba Tennodai 1-1-1 Tsukuba Ibaraki 305-8571 Japan .,Faculty of Pure & Applied Science, University of Tsukuba Tennodai 1-1-1 Tsukuba Ibaraki 305-8571 Japan.,Tsukuba Research Center for Energy Materials Science (TREMS), University of Tsukuba Tsukuba Ibaraki 305-8571 Japan
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Liu B, Nakagawa Y, Li C, Yabushita M, Tomishige K. Selective C–O Hydrogenolysis of Terminal C–OH Bond in 1,2-Diols over Rutile-Titania-Supported Iridium-Iron Catalysts. ACS Catal 2022. [DOI: 10.1021/acscatal.2c04499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Affiliation(s)
- Ben Liu
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Yoshinao Nakagawa
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| | - Congcong Li
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
| | - Mizuho Yabushita
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
| | - Keiichi Tomishige
- Department of Applied Chemistry, School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
- Research Center for Rare Metal and Green Innovation, Tohoku University, 468-1, Aoba, Aramaki, Aoba-ku, Sendai 980-0845, Japan
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
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