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Jincai Zhao - One of the best experts on this subject based on the ideXlab platform.

  • Pivotal Role and regulation of proton transfer in water oxidation on hematite photoanodes
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Hongwei Ji, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton–electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH– became the dominant hole acceptor. We further modified the proton–el...

  • Pivotal Role and Regulation of Proton Transfer in Water Oxidation on Hematite Photoanodes.
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton-electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH(-) became the dominant hole acceptor. We further modified the proton-electron transfer sequence with appropriate proton acceptors (buffer bases) and achieved a greater than 4-fold increase in the PEC water oxidation efficiency on a hematite photoanode.

Yuchao Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Pivotal Role and regulation of proton transfer in water oxidation on hematite photoanodes
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Hongwei Ji, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton–electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH– became the dominant hole acceptor. We further modified the proton–el...

  • Pivotal Role and Regulation of Proton Transfer in Water Oxidation on Hematite Photoanodes.
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton-electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH(-) became the dominant hole acceptor. We further modified the proton-electron transfer sequence with appropriate proton acceptors (buffer bases) and achieved a greater than 4-fold increase in the PEC water oxidation efficiency on a hematite photoanode.

Hongna Zhang - One of the best experts on this subject based on the ideXlab platform.

  • Pivotal Role and regulation of proton transfer in water oxidation on hematite photoanodes
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Hongwei Ji, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton–electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH– became the dominant hole acceptor. We further modified the proton–el...

  • Pivotal Role and Regulation of Proton Transfer in Water Oxidation on Hematite Photoanodes.
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton-electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH(-) became the dominant hole acceptor. We further modified the proton-electron transfer sequence with appropriate proton acceptors (buffer bases) and achieved a greater than 4-fold increase in the PEC water oxidation efficiency on a hematite photoanode.

Chuncheng Chen - One of the best experts on this subject based on the ideXlab platform.

  • Pivotal Role and regulation of proton transfer in water oxidation on hematite photoanodes
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Hongwei Ji, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton–electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH– became the dominant hole acceptor. We further modified the proton–el...

  • Pivotal Role and Regulation of Proton Transfer in Water Oxidation on Hematite Photoanodes.
    Journal of the American Chemical Society, 2016
    Co-Authors: Yuchao Zhang, Hongna Zhang, Chuncheng Chen, Jincai Zhao
    Abstract:

    Hematite is a promising material for solar water splitting; however, high efficiency remains elusive because of the kinetic limitations of interfacial charge transfer. Here, we demonstrate the Pivotal Role of proton transfer in water oxidation on hematite photoanodes using photoelectrochemical (PEC) characterization, the H/D kinetic isotope effect (KIE), and electrochemical impedance spectroscopy (EIS). We observed a concerted proton-electron transfer (CPET) characteristic for the rate-determining interfacial hole transfer, where electron transfer (ET) from molecular water to a surface-trapped hole was accompanied by proton transfer (PT) to a solvent water molecule, demonstrating a substantial KIE (∼3.5). The temperature dependency of KIE revealed a highly flexible proton transfer channel along the hydrogen bond at the hematite/electrolyte interface. A mechanistic transition in the rate-determining step from CPET to ET occurred after OH(-) became the dominant hole acceptor. We further modified the proton-electron transfer sequence with appropriate proton acceptors (buffer bases) and achieved a greater than 4-fold increase in the PEC water oxidation efficiency on a hematite photoanode.

Pulkit Datt - One of the best experts on this subject based on the ideXlab platform.

  • The Pivotal Role of Senescence in Cell Death and Aging: Where Do We Stand?
    Current Molecular Biology Reports, 2020
    Co-Authors: Sadaf, Mohammad Zeeshan Najm, Vyas Shingatgeri, Moin Uddin, Mohammad Asrar Izhari, Salman Akhtar, Atul Kathait, Subhabrata Kar, Ishita Jain, Pulkit Datt
    Abstract:

    Cellular senescence acts as a brake pedal of the car in our system to avert accidents like cancer. Recent studies provide the lines of evidence that support how senescence contributes towards aging and age-associated diseases. How senescence plays a Pivotal Role in aging and cell death and their inter-relation have been discussed in detail. The current research or advancement in the field of senescence is the emergence of senolytic drugs for the eradication of senescent cells and induction of senescence in HIV-infected patients due to HAART drugs. Senescence plays a significant Role in aging and cell death as well as shows resistance to apoptosis.

  • The Pivotal Role of Senescence in Cell Death and Aging: Where Do We Stand?
    Current Molecular Biology Reports, 2020
    Co-Authors: Mohammad Zeeshan Najm, Vyas Shingatgeri, Moin Uddin, Mohammad Asrar Izhari, Atul Kathait, Ishita Jain, Pulkit Datt, Md Salman Akhtar, Komal Komal, Anoushka Sharma
    Abstract:

    Purpose of Review Cellular senescence acts as a brake pedal of the car in our system to avert accidents like cancer. Recent studies provide the lines of evidence that support how senescence contributes towards aging and age-associated diseases. How senescence plays a Pivotal Role in aging and cell death and their inter-relation have been discussed in detail. Recent Findings The current research or advancement in the field of senescence is the emergence of senolytic drugs for the eradication of senescent cells and induction of senescence in HIV-infected patients due to HAART drugs. Summary Senescence plays a significant Role in aging and cell death as well as shows resistance to apoptosis.