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   Articles with "oxygen evolving" as a keyword



Boosting oxygen-evolving activity via atom-stepped interfaces architected with kinetic frustration.

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recommendations! Published in 2022 at "Advanced materials"

DOI: 10.1002/adma.202206890

Abstract: A highly active interface is extremely critical for the catalytic efficiency of an electrocatalyst, however, facilely tailoring its atomic packing characteristics remains challenging. Herein, we report a simple yet effective strategy to obtain copious high-energy… read more here.

Keywords: evolving activity; oxygen evolving; kinetic frustration; boosting oxygen ... See more keywords

Oxygen-evolving photosynthetic cyanobacteria for 2D bismuthene radiosensitizer-enhanced cancer radiotherapy

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recommendations! Published in 2022 at "Bioactive Materials"

DOI: 10.1016/j.bioactmat.2022.01.014

Abstract: The local hypoxic tumor environment substantially hampers the therapeutic efficiency of radiotherapy, which typically requires the large X-ray doses for tumor treatment but induces the serious side effects. Herein, a biomimetic radiosensitized platform based on… read more here.

Keywords: photosynthetic cyanobacteria; oxygen evolving; evolving photosynthetic; tumor ... See more keywords

Sustainable oxygen-evolving electrode via in situ regenerative deposition of hexahydroxyiridate (IV)-adsorbed IrOx nanoparticles

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recommendations! Published in 2021 at "Electrochimica Acta"

DOI: 10.1016/j.electacta.2021.138291

Abstract: Abstract Water splitting is regarded as the essential reaction for converting intermittent energy into hydrogen fuel. Sustainability of the oxygen-evolving electrode determines efficient and economic hydrogen production. Using Ir derivatives in an electrolyte, we report… read more here.

Keywords: oxygen evolving; regenerative deposition; adsorbed irox; oxygen ... See more keywords
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Implications of structural heterogeneity for the electronic structure of the final oxygen-evolving intermediate in photosystem II.

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recommendations! Published in 2019 at "Journal of inorganic biochemistry"

DOI: 10.1016/j.jinorgbio.2019.110797

Abstract: Heterogeneity in intermediate catalytic states of the oxygen-evolving complex (OEC) of Photosystem II is known from a wide range of experimental and theoretical data, but its potential implications for the mechanism of water oxidation remain… read more here.

Keywords: state; electronic structure; photosystem; oxygen evolving ... See more keywords

MnIV4O4 Model of the S3 Intermediate of the Oxygen-Evolving Complex: Effect of the Dianionic Disiloxide Ligand.

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recommendations! Published in 2022 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.2c01612

Abstract: Synthetic complexes provide useful models to study the interplay between the structure and spectroscopy of the different Sn-state intermediates of the oxygen-evolving complex (OEC) of photosystem II (PSII). Complexes containing the MnIV4 core corresponding to… read more here.

Keywords: disiloxide ligand; oxygen evolving; spectroscopy; ligand ... See more keywords

Conformational Flexibility of D1-Glu189: A Crucial Determinant in Substrate Water Selection, Positioning, and Stabilization within the Oxygen-Evolving Complex of Photosystem II

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recommendations! Published in 2024 at "ACS Omega"

DOI: 10.1021/acsomega.4c09981

Abstract: Photosynthetic water oxidation is a vital process responsible for producing dioxygen and supplying the energy necessary to sustain life on Earth. This fundamental reaction is catalyzed by the oxygen-evolving complex (OEC) of photosystem II, which… read more here.

Keywords: water; conformational flexibility; flexibility glu189; evolving complex ... See more keywords

Is Deprotonation of the Oxygen-Evolving Complex of Photosystem II during the S1 → S2 Transition Suppressed by Proton Quantum Delocalization?

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recommendations! Published in 2021 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.1c00633

Abstract: We address the protonation state of the water-derived ligands in the oxygen-evolving complex (OEC) of photosystem II (PSII), prepared in the S2 state of the Kok cycle. We perform quantum mechanics/molecular mechanics calculations of isotropic… read more here.

Keywords: quantum delocalization; delocalization; proton; photosystem ... See more keywords
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Does Serial Femtosecond Crystallography Depict State-Specific Catalytic Intermediates of the Oxygen-Evolving Complex?

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recommendations! Published in 2023 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.3c00489

Abstract: Recent advances in serial femtosecond crystallography (SFX) of photosystem II (PSII), enabled by X-ray free electron lasers (XFEL), provided the first geometric models of distinct intermediates in the catalytic S-state cycle of the oxygen-evolving complex… read more here.

Keywords: oxidation; state; oxygen evolving; serial femtosecond ... See more keywords

Artificial Mn4SrO4-Cluster Mimicking the Structural Changes of the Photosynthetic Oxygen-Evolving Center.

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recommendations! Published in 2025 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.5c14817

Abstract: The oxygen-evolving center (OEC) of photosystem II (PSII) is characterized by a unique Mn4CaO5- or Mn4SrO5-cluster. Understanding the structure-function relationship and the catalytic mechanism of the OEC has been hindered by the lack of a… read more here.

Keywords: mn4sro4; cluster; oxygen evolving; evolving center ... See more keywords

Reactive Pendant Mn═O in a Synthetic Structural Model of a Proposed S4 State in the Photosynthetic Oxygen Evolving Complex.

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recommendations! Published in 2017 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.6b05906

Abstract: The molecular mechanism of the Oxygen Evolving Center of photosystem II has been under debate for decades. One frequently cited proposal is the nucleophilic attack by water hydroxide on a pendant Mn═O moiety, though no… read more here.

Keywords: oxygen; cluster; oxygen evolving; model ... See more keywords

Utilizing ion leaching effects for achieving high oxygen-evolving performance on hybrid nanocomposite with self-optimized behaviors

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recommendations! Published in 2020 at "Nature Communications"

DOI: 10.1038/s41467-020-17108-5

Abstract: Ion leaching from pure-phase oxygen-evolving electrocatalysts generally exists, leading to the collapse and loss of catalyst crystalline matrix. Here, different from previous design methodologies of pure-phase perovskites, we introduce soluble BaCl 2 and SrCl 2… read more here.

Keywords: leaching effects; self optimized; ion leaching; oxygen evolving ... See more keywords