Results 41 to 50 of about 552,566 (266)

Effects of Zirconium Doping Into a Monoclinic Scheelite BiVO4 Crystal on Its Structural, Photocatalytic, and Photoelectrochemical Properties

open access: yesFrontiers in Chemistry, 2018
Effects of zirconium (Zr) doping into BiVO4 powder on its structural properties and photocatalytic activity for O2 evolution were examined. The formation of BiVO4 powder crystallized in a monoclinic scheelite structure (ms-BiVO4) was achieved when the ...
Shigeru Ikeda   +7 more
doaj   +1 more source

A Simple Fabrication of Sb2S3/TiO2 Photo-Anode with Long Wavelength Visible Light Absorption for Efficient Photoelectrochemical Water Oxidation

open access: yesNanomaterials, 2022
An Sb2S3-sensitized TiO2 (Sb2S3/TiO2) photo-anode (PA) exhibiting a high photo-electrochemical (PEC) performance in water oxidation has been successfully prepared by a simple chemical bath deposition (CBD) technique.
Fei Han   +4 more
doaj   +1 more source

AscF in the mycobacterial CIII–CIV supercomplex lacks metal and nucleotide binding but links malate oxidation to respiration

open access: yesFEBS Letters, EarlyView.
The mycobacterial CIII‐CIV respiratory supercomplex is an obligate assembly, encompassing several subunits of unknown functions. We have characterized the intracellular subunit AscF, and show that it is unlikely to be a sensor for metals or nucleotides, but is required for growth on nonfermentable energy sources, and likely works as an adapter for ...
Eni Rile   +8 more
wiley   +1 more source

Preparation and Photocatalytic/Photoelectrochemical Investigation of 2D ZnO/CdS Nanocomposites

open access: yesChemEngineering, 2022
Properties of heterotructured semiconductors based on ZnO/CdS nanosheets are investigated for their possible application in photocatalytic and photoelectrochemical reactions.
Dina Bakranova   +2 more
doaj   +1 more source

Oxidation of Garbage in Supercritical Water

open access: yesJournal of the Japan Society of Waste Management Experts, 1999
生ごみを構成する食物の湿式酸化分解性および反応パラメータ (反応時間・温度, 供給酸素量および水充填率等) の影響について知見を得ることを目的とし, 22種類の試料について, バッチ式小型反応容器を用い, 超臨界水湿式酸化分解実験を行った。植物性生ごみは酸化されやすく, 種類による酸化分解のしやすさの相違はほとんどみられなかった。動物性生ごみ (魚を含む) も酸化分解されるが, 植物性生ごみに比べると難分解である。種類による酸化分解のしやすさにも大きな相違はないが, 動物性油脂類は肉類 (魚を含む) より分解率が低く, 中でも牛脂は最も酸化分解されにくい。また, すべての試料について酢酸が最後まで残存する有機物であることが明らかとなった。反応パラメータについて, 反応時間10分で分解率が99 ...
Jin, Fang-Ming   +2 more
openaire   +2 more sources

Photosynthetic water oxidation [PDF]

open access: yesFEBS Letters, 1985
A sequential four‐step chemical model for the water oxidation process in photosystem II is presented, based on the observation that a peroxide‐linked biquinone complex can be chemically formed as a result of hydroxide ion addition to quinone. In our model, the hydroxide ion intermediate is generated in photosystem II as a result of proton abstraction ...
Webber, Andrew N.   +3 more
openaire   +2 more sources

The therapeutic opportunities and pitfalls of using iron ion chelators to treat neurodegenerative diseases

open access: yesFEBS Letters, EarlyView.
Although too much iron in the brain promotes neurodegeneration, iron ion chelators have had mixed effects in clinical trials. This review explains why; some chelators do not render the iron redox‐inactive (e.g., L1) whereas others do (e.g., desferrioxamine).
Barry Halliwell
wiley   +1 more source

Water Oxidation by Ru-Polyoxometalate Catalysts: Overpotential Dependency on the Number and Charge of the Metal Centers

open access: yesInorganics, 2015
Water oxidation is efficiently catalyzed by several Ru-based polyoxometalate (POM) molecular catalysts differing in the number, local atomistic environment and oxidation state of the Ru sites.
Simone Piccinin, Stefano Fabris
doaj   +1 more source

The water-oxidation complex in photosynthesis

open access: yesBiochimica et Biophysica Acta (BBA) - Bioenergetics, 2004
Studies of the photosynthetic water-oxidation complex of photosystem II (PS II) using spectroscopic techniques have characterized not only important structural features, but also changes that occur in oxidation state of the Mn(4) cluster and in its internal organization during the accumulation of oxidizing equivalents leading to O(2) formation ...
Sauer, Kenneth, Yachandra, Vittal K.
openaire   +2 more sources

Identification of the plant mitochondrial OrfX protein: A mass spectrometry approach

open access: yesFEBS Letters, EarlyView.
The mitochondrial genome of plants contains an open reading frame, orfx, which encodes a rare protein that has so far escaped mass spectrometric detection. The protein resembles the c‐subunit of bacterial twin‐arginine‐motif‐dependent protein translocases (TatC).
Matthias Döring   +3 more
wiley   +1 more source

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