scholarly journals Reactivation of sulfide-protected [FeFe] hydrogenase in a redox-active hydrogel

2020 ◽  
Vol 56 (69) ◽  
pp. 9958-9961
Author(s):  
Alaa A. Oughli ◽  
Steffen Hardt ◽  
Olaf Rüdiger ◽  
James A. Birrell ◽  
Nicolas Plumeré
Keyword(s):  
Oxygen Sensitivity ◽  
Active Hydrogen ◽  
Widespread Application ◽  
Highly Active ◽  
Redox Active ◽  
Inactive Form

[FeFe] hydrogenases are highly active hydrogen conversion catalysts, whose oxygen sensitivity prevents their widespread application. Here, an oxygen-stable inactive form was reactivated in a redox hydrogel enabling its practical use under air.

scholarly journals CO2Laser Cutting, 2nd Edition, John Powell. 1998. Springer-Verlag. 248 pp. $79.95. ISBN 1-852-33047-3.

2000 ◽  
Vol 18 (4) ◽  
pp. 715-717
Author(s):  
Alexander F.H. Kaplan
Keyword(s):  
Laser Cutting ◽  
State Of The Art ◽  
Practical Experience ◽  
Job Shops ◽  
Power Laser ◽  
Laser Materials ◽  
Widespread Application ◽  
Know How ◽  
Highly Active ◽  
Technical Director

This book treats the most widespread application of high-power laser materials processing, that is, CO2 laser cutting. Although called CO2 laser cutting, most of the content of the book is also valid for cutting with other lasers such as Nd:YAG or Cu Vapor lasers. The technology is described in a very useful style by emphasizing practical aspects and by replacing highly scientific phrases by clear, illustrative explanations. Nevertheless, this guide through the complex field of laser cutting is accompanied by critical physical explanations throughout the whole book. It should be emphasized that Dr. Powell is the technical director of two job shops on laser cutting, but has also been highly active in science for many years. This ideal combination of practical experience with scientific know-how is reflected throughout the whole book by highlighting the practical aspects of laser cutting, often accompanied by very critical scientific explanations. It should be noted that the present second edition of the book differs from the first edition, printed in 1993, only by several pages that had to be updated according to the state of the art.

Highly Active Hydrogen Evolution Electrodes via Co-Deposition of Platinum and Polyoxometalates

2015 ◽  
Vol 7 (21) ◽  
pp. 11648-11653 ◽  
Author(s):  
Chao Zhang ◽  
Yahui Hong ◽  
Ruihan Dai ◽  
Xinping Lin ◽  
La-Sheng Long ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Active Hydrogen ◽  
Highly Active

Femtosecond-laser structuring of Ni electrodes for highly active hydrogen evolution

2017 ◽  
Vol 247 ◽  
pp. 1130-1139 ◽  
Author(s):  
Thomas Rauscher ◽  
Christian Immanuel Müller ◽  
Andreas Gabler ◽  
Thomas Gimpel ◽  
Michael Köhring ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Hydrogen Evolution ◽  
Active Hydrogen ◽  
Highly Active ◽  
Laser Structuring

Ni-doped MoS2 nanoparticles as highly active hydrogen evolution electrocatalysts

RSC Advances ◽  
2016 ◽  
Vol 6 (20) ◽  
pp. 16656-16661 ◽  
Author(s):  
Dezhi Wang ◽  
Xiangyong Zhang ◽  
Yilin Shen ◽  
Zhuangzhi Wu
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Efficiency ◽  
Active Hydrogen ◽  
Highly Active ◽  
Mos2 Nanoparticles

The replacement of Pt with cheap metal electrocatalysts with high efficiency and superior stability for the hydrogen evolution reaction (HER) remains a great challenge.

Rhombic porous CoP2 nanowire arrays synthesized by alkaline etching as highly active hydrogen-evolution-reaction electrocatalysts

2018 ◽  
Vol 6 (39) ◽  
pp. 19038-19046 ◽  
Author(s):  
Yi Zhou ◽  
Yuying Yang ◽  
Ruijing Wang ◽  
Xiaotong Wang ◽  
Xinyuan Zhang ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Nanowire Arrays ◽  
Alkaline Media ◽  
Carbon Cloth ◽  
Active Hydrogen ◽  
Alkaline Etching ◽  
Highly Active

Rhombic arrays of porous CoP2 nanowires on carbon cloth for an efficient hydrogen evolution reaction in both acid and alkaline media.

Metal Doped TiO2 Photocatalysts for CO2 Photoreduction

2013 ◽  
Vol 757 ◽  
pp. 243-256 ◽  
Author(s):  
Amir Al-Ahmed
Keyword(s):  
Chemical Reactions ◽  
Water Oxidation ◽  
Active Species ◽  
Electron Hole ◽  
Highly Active ◽  
Redox Active ◽  
Recent Developments ◽  
Metal Doped ◽  
Generate Electron ◽  
Hole Recombination

Greenhouse gases such as CO2, CH4 and CFCs are the primary causes of global warming. Worldwide, people are exploring techniques to reduce, capture, store CO2 gas and even convert this gas in to some useful chemicals. CO2 can be transformed into hydrocarbons in a photocatalytic reaction. The advantage of photo reduction of CO2 is to use inexhaustible solar energy. Knowledge of elementary steps in photocatalytic CO2 reduction under UV irradiation is required in order to improve the photo efficiency of the photocatalyst. A semiconductor photocatalyst mediating CO2 reduction and water oxidation needs to absorb light energy, generate electron hole pairs, spatially separate them, transfer them to redox active species across the interface and minimize electron hole recombination. This requires the semiconductor to have its conduction band electrons at higher energy compared to the CO2 reduction potential while the holes in the valence band need to be able to oxidize water to O2. A single semiconductor does not usually satisfy these requirements. Some recent developments in this field have been moves towards rational photocatalyst design, the use of highly active isolated Ti-species in mesoporous and microporous materials, metal-doping of TiO2, development of catalysts active at longer wavelengths than can be achieved with commercially available titania etc. The use of transition-metal loaded titanium dioxide (TiO2) has been extensively studied as a photocatalyst in photoreactions. Unlike traditional catalysts drive chemical reactions by thermal energy, semiconducting photocatalysts can induce chemical reactions by inexhaustible sunlight and convert CO2 in to the useful hydrocarbons. In this review article we will cover different aspects of metal doped nano structured TiO2 photocatalysts, used to convert/reduce CO2 in to useful hydrocarbons.

Robust Redox-Active Hydrogen-Bonded Organic Framework for Rechargeable Batteries

2022 ◽  
Author(s):  
Xiaolin Liu ◽  
Xiya Yang ◽  
Hailong Wang ◽  
Ichiro Hisaki ◽  
Kang Wang ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Electrode Materials ◽  
Rechargeable Batteries ◽  
Active Hydrogen ◽  
Cycle Stability ◽  
Redox Active ◽  
Organic Electrode ◽  
Organic Framework ◽  
Hydrogen Bonded

The problems such as low cycle stability, poor ion mobility and weak conductivity hinder the development of organic electrode materials. Herein, one of robust porous hydrogen-bonded organic framework (HOF), CPHATN-1a,...

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