Particulate photocathode composed of (ZnSe)0.85(CuIn0.7Ga0.3Se2)0.15 synthesized with Na2S for enhanced sunlight-driven hydrogen evolution

2018 ◽  
Vol 2 (9) ◽  
pp. 1957-1965 ◽  
Author(s):  
Yosuke Kageshima ◽  
Tsutomu Minegishi ◽  
Yosuke Goto ◽  
Hiroyuki Kaneko ◽  
Kazunari Domen
Keyword(s):  
Solid Solution ◽  
Hydrogen Evolution ◽  
Flux Method ◽  
Synthesis Conditions ◽  
Particulate Solid

A particulate solid solution, (ZnSe)0.85(CuIn0.7Ga0.3Se2)0.15, was synthesized by the flux method using various amounts of a Cu precursor (to make Cu-deficient, stoichiometric, or Cu-excess specimens) and/or a Na2S additive, to assess the effects of synthesis conditions on photoelectrochemical (PEC) properties.

Controllable synthesis of inorganic–organic Zn1−xCdxS-DETA solid solution nanoflowers and their enhanced visible-light photocatalytic hydrogen-production performance

2017 ◽  
Vol 46 (34) ◽  
pp. 11335-11343 ◽  
Author(s):  
Jiali Lv ◽  
Jinfeng Zhang ◽  
Kai Dai ◽  
Changhao Liang ◽  
Guangping Zhu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Production ◽  
Visible Light ◽  
Environmental Pollution ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Production Performance ◽  
Controllable Synthesis ◽  
Visible Light Photocatalytic ◽  
Energy Shortage

Sustainable photocatalytic hydrogen evolution (PHE) of water splitting has been utilized to solve the serious environmental pollution and energy shortage problems over the last decade.

Nanocrystalline Ni-Mo alloys and their application in electrocatalysis

1994 ◽  
Vol 9 (11) ◽  
pp. 2998-3008 ◽  
Author(s):  
R. Schulz ◽  
J.Y. Huot ◽  
M.L. Trudeau ◽  
L. Dignard-Bailey ◽  
Z.H. Yan ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Evolution ◽  
Amorphous Phase ◽  
Hydrogen Evolution Reaction ◽  
Supersaturated Solid Solution ◽  
Milling Process ◽  
Alkaline Solutions ◽  
Nanocrystalline State ◽  
Mo Content ◽  
Nanocrystalline Phases

The structural and electrocatalytic properties of metastable Ni-Mo alloys have been investigated for the hydrogen evolution reaction in alkaline solutions. Amorphous and nanocrystalline phases have been prepared by mechanically alloying the elemental components under various milling conditions. Fcc nanocrystals are formed when the Mo concentration is smaller than 30 at. %. The nanocrystalline state becomes unstable with respect to the amorphous phase when the Mo content in the solid solution exceeds 30 at. %. The electroactive phase for the hydrogen evolution reaction in alkaline solutions is the nanocrystalline supersaturated solid solution. The presence of oxygen during the milling process improves the properties of the alloys.

Effect of Synthesis Conditions and Actinide Contents on Phase Composition of Actinide Bearing Ceramics

2003 ◽  
Vol 807 ◽  
Author(s):  
A. G. Ptashkin ◽  
S. V. Stefanovsky ◽  
S. V. Yudintsev ◽  
S. A. Perevalov
Keyword(s):  
Electron Microscopy ◽  
Solid Solution ◽  
Phase Composition ◽  
Fluorite Structure ◽  
X Ray Diffraction ◽  
X Ray ◽  
Synthesis Conditions ◽  
Reducing Conditions ◽  
Dispersive System ◽  
Scanning Electron

ABSTRACTPu-bearing zirconolite and pyrochlore based ceramics were prepared by melting under oxidizing and reducing conditions at 1550 °C. 239Pu content in the samples ranged between ∼10 and ∼50 wt.%. Phase composition of the ceramics and Pu partitioning were studied using X-ray diffraction (XRD) and scanning electron microscopy with energy dispersive system (SEM/EDS). Major phases in the samples were found to be the target zirconolite and pyrochlore as well as a cubic fluorite structure oxide. Normally the Pu content in the Pu host phases was 10–12 wt.%. This corresponds to the Pu content recommended for matrices for immobilization of excess weapons plutonium. At higher Pu content (up to 50 wt.%) additional phases, such as a PuO2-based cubic fluorite-structured solid solution, perovskite, and rutile were found.

Noble-metal-free NiS decorated organic-inorganic hybrid ZnxCd1−xSe-diethylenetriamine solid solution for hydrogen evolution

2020 ◽  
Vol 507 ◽  
pp. 145213 ◽  
Author(s):  
Xudong Li ◽  
Feifei Mei ◽  
Jinfeng Zhang ◽  
Kai Dai ◽  
Changhao Liang
Keyword(s):  
Solid Solution ◽  
Hydrogen Evolution ◽  
Noble Metal ◽  
Inorganic Hybrid ◽  
Metal Free

Polarisation cathodique en milieu alcalin des alliages Nb–Co

1981 ◽  
Vol 59 (8) ◽  
pp. 1261-1266 ◽  
Author(s):  
Y. Umetsu ◽  
D. L. Piron ◽  
G. Bélanger
Keyword(s):  
Solid Solution ◽  
Optical Microscopy ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Cathodic Polarization ◽  
Electrochemical Activity ◽  
Surface Degradation ◽  
Δ Phase ◽  
The One ◽  
Increased Activity

NbCo alloys were prepared and their composition characterized by optical microscopy. These alloys were evaluated for their electrochemical activity towards the hydrogen evolution reaction (HER) at 25 °C in a 25% KOH solution. The alloys between 20 and 70wt% Co showed an increased activity compared to their parent metals. However the activity is below the one observed for pure Ni. As for the NbNi alloys, the NbCo undergo some surface degradation under prolonged (6 h) cathodic polarization at 400–700 mA cm−2. This disintegration of the surfaces is observed for alloys below 50% in Co. Above this proportion, the alloys remain stable towards the RDH. This degradation is associated with the presence of the δ phase in the alloy: this phase is the solid solution of Nb in the alloy.

scholarly journals Catalysis: NiMo Solid Solution Nanowire Array Electrodes for Highly Efficient Hydrogen Evolution Reaction (Adv. Funct. Mater. 44/2019)

2019 ◽  
Vol 29 (44) ◽  
pp. 1970308
Author(s):  
Adeela Nairan ◽  
Peichao Zou ◽  
Caiwu Liang ◽  
Jiaxing Liu ◽  
Dang Wu ◽  
...  
Keyword(s):  
Solid Solution ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanowire Array ◽  
Highly Efficient

An amorphous nickel boride-modified ZnxCd1−xS solid solution for enhanced photocatalytic hydrogen evolution

2020 ◽  
Vol 49 (4) ◽  
pp. 1220-1231 ◽  
Author(s):  
Yue Cao ◽  
Guorong Wang ◽  
Qingxiang Ma ◽  
Zhiliang Jin
Keyword(s):  
Solid Solution ◽  
Hydrogen Evolution ◽  
Rational Design ◽  
Co Catalyst ◽  
Nickel Boride ◽  
Photocatalytic Hydrogen Evolution

In this work, the rational design of amorphous NixB as a co-catalyst for the modification of ZnxCd1−xS was achieved.

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