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Tada H. Hydrogen peroxide photo-fuel cells. Dalton Trans 2023; 52:14733-14741. [PMID: 37807856 DOI: 10.1039/d3dt02518g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Hydrogen peroxide (H2O2) possesses both strong oxidizing and moderate reducing ability. Due to the unique chemical reactivity, one-compartmentalization of fuel cells is possible by using H2O2 as both the fuel and oxidant for fuel cells (H2O2-FC). To enhance the anode reaction (H2O2 → O2 + 2H+ + 2e-) of the H2O2-FC, a noble metal-free H2O2-photo fuel cell (PFC) has been newly developed for enhancing the conversion from chemical energy to electric energy with only emission of water and oxygen. The H2O2-photo fuel cells (PFC) take several significant advantages over the conventional hydrogen-oxygen fuel cells. With the realization of a solar-driven energy cycle with H2O2 as the key substance in mind, this Frontier article highlights the H2O2-PFCs. Firstly, the fundamentals of the H2O2-PFC are dealt with by treating the prototype using TiO2 as the photoanode. Then, recent progress in the H2O2-PFCs and an emerging application to self-powered biosensors are described. Finally, the conclusions are summarized with the future outlook.
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Affiliation(s)
- Hiroaki Tada
- Institutes of Innovation for Future Society, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
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Akita A, Fujishima M, Tada H. Optical Hot Spot Generation by the Plasmonic Coupling of Au Nanoparticles in the Nanospaces of Mesoporous Titanium(IV) Oxide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:1838-1842. [PMID: 33513306 DOI: 10.1021/acs.langmuir.0c03184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
An in situ reduction technique consisting of chemisorption of 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS) and subsequent reaction with HAuCl4 has been developed for depositing Au nanoparticles (NPs) uniformly in the depth direction of a mesoporous TiO2 nanocrystalline film (Au/TMCTS/mp-TiO2). The TMCTS monolayer is further converted into silicon oxide by heating in the air (Au/SiOx/mp-TiO2). In the absorption spectra of Au/SiOx/mp-TiO2 prepared at varying HAuCl4 concentrations (C), the localized surface plasmon resonance (LSPR) band of Au NPs significantly broadens C ≈ 1.22 mM at 546 nm to be split into two peaks around 500 and 700 nm at C ≥ 2.43 mM, whereas such a phenomenon is not observed for the usual Au NP-loaded TiO2 particles. Three-dimensional-finite difference time domain simulations showed that the unique optical property of Au/SiOx/mp-TiO2 stems from the effective LSPR coupling of very close Au NPs and partial fusions in the nanospaces of mp-TiO2. Further, the optical hot spots in Au/TMCTS/mp-TiO2 as well as Au/SiOx/mp-TiO2 generate an intense local electric field giving increase to a great enhancement of the absorption in the infrared spectrum of the TMCTS monolayer on mp-TiO2.
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Affiliation(s)
- Atsunobu Akita
- Graduate School of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Musashi Fujishima
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Hiroaki Tada
- Graduate School of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1, Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
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Tian J, Zhao P, Zhang S, Huo G, Suo Z, Yue Z, Zhang S, Huang W, Zhu B. Platinum and Iridium Oxide Co-modified TiO 2 Nanotubes Array Based Photoelectrochemical Sensors for Glutathione. NANOMATERIALS 2020; 10:nano10030522. [PMID: 32183132 PMCID: PMC7153253 DOI: 10.3390/nano10030522] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 03/05/2020] [Accepted: 03/10/2020] [Indexed: 12/20/2022]
Abstract
Oriented TiO2 nanotubes, which are fabricated by anodic oxidation method, are prospective in photoelectrochemical analysis and sensors. In this work, Pt and IrO2 co-modified TiO2 nanotubes array was prepared via a two-step deposition process involving the photoreductive deposition of Pt and chemical deposition of IrO2 on the oriented TiO2 nanotubes. Due to the improved separation of photo-generated electrons and holes, Pt-IrO2 co-modified TiO2 nanotubes presented significantly higher PEC activity than pure TiO2 nanotubes or mono-modified TiO2 nanotubes. The PEC sensitivity of Pt-IrO2 co-modified TiO2 nanotubes for glutathione was also monitored and good sensitivity was observed.
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Affiliation(s)
- Jing Tian
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Peng Zhao
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Shasha Zhang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Guona Huo
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Zhaochen Suo
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Zhao Yue
- Department of Microelectronics, Nankai University, Tianjin 300350, China
- Correspondence: (Z.Y.); (B.Z.)
| | - Shoumin Zhang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Weiping Huang
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
| | - Baolin Zhu
- College of Chemistry, The Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Metal and Molecule-based Material Chemistry, Nankai University, Tianjin 300071, China; (J.T.); (P.Z.); (S.Z.); (G.H.); (Z.S.); (S.Z.); (W.H.)
- National Demonstration Center for Experimental Chemistry Education (Nankai University), Tianjin 300071, China
- Correspondence: (Z.Y.); (B.Z.)
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