Oxidation states of the manganese cluster during the flash-induced S-state cycle of the photosynthetic oxygen-evolving complex The Mn K-edge x-ray absorption spectra for the pure S states of the tetranuclear Mn cluster of the oxygen-evolving complex of photosystem II during flash-i... TA Roelo...
The recognition in the field of the consequences of processes demonstrated in the laboratory suggests that OC may be a predominant control of both size and oxidation state of Fe in many natural waters. 展开 关键词: electrodeposition maghemite nanoparticles environmental remediation As(V adsorption DOI...
We found the highly nanostructured α-Ni(OH)2 catalyst afforded a current density of 10 mA cm(-2) at a small overpotential of a mere 0.331 V and a small Tafel slope of ~42 mV/decade, comparing favorably with the state-of-the-art RuO2 catalyst. This α-Ni(OH)2 catalyst also ...
Size effects and active state formation of cobalt oxide nanoparticles during the oxygen evolution reaction Article Open access 08 August 2022 Activating lattice oxygen in NiFe-based (oxy)hydroxide for water electrolysis Article Open access 21 April 2022 Data availability The data that support the...
Ir O4+cations have been generated and observed in mass spectra(MS),a recent letter in Nature reported[1].IX is now the highest known formal oxidation state,according to the paper.The authors have characterized[Ir O4]+·Ar by IR photodissociation spectroscopy,and the spectrum is consistent with...
Subduction zones are likely oxidised relative to the rest of the mantle, and hence represent regions where not only water is concentrated, but also Fe 3+. 展开 关键词: Experimental/ Earth mantle Fourier transform spectroscopy geochemistry high-pressure effects high-temperature effects infrared ...
23,24,25. For instance, Rh atom doped rutile VO2exhibited higher NH3BH3hydrolysis activity than Rh doped monoclinic VO2due to the higher occupied state of single Rh atoms supported on rutile VO221. Mn-C3N4showed high solar-driven water splitting activity, which was mainly dependent on its ...
whereas O-O formation limits the rate of the reaction. From the oxidized state of the catalyst shown on the bottom of the scheme, the water oxidation process can proceed through two distinct pathways: The WNA pathway involves a water molecule within the electric double layer in the rate-determ...
The Au L3-edge XANES profiles indicated that the Au species in Au1/BP nanosheets were in a mediate oxidation state (Fig. 1c), according to the mediate intensity for white line compared with Au foil and Au2O3. As shown in EXAFS in R space (Fig. 1d), the spectrum of Au1/BP ...
Our experiments demonstrate that the atomic nature of the states accumulated during the steady state of water oxidation catalysis on Ni–Fe oxyhydroxides can change depending on the amount and method of Fe incorporation into NiOOH. We find that FeOOHNiOOH, which exhibits large islands of FeOOH ...