Abstract The electroreduction of water for sustainable hydrogen production is a critical component several developing clean-energy technologies, such as splitting and fuel cells. However, finding cheap efficient alternative catalyst to replace currently used platinum-based catalysts still prerequisite the commercialization these technologies. Here we report robust highly active evolution reaction that constructed by in situ growth molybdenum disulfide on surface cobalt diselenide. In acidic...

The design of efficient, cheap, and abundant oxygen evolution reaction (OER) catalysts is crucial to the development sustainable energy sources for powering fuel cells. We describe here a novel Mn(3)O(4)/CoSe(2) hybrid which could be promising candidate such electrocatalysts. Possibly due synergetic chemical coupling effects between Mn(3)O(4) CoSe(2), constructed displayed superior OER catalytic performance relative its parent CoSe(2)/DETA nanobelts. Notably, earth-abundant cobalt (Co)-based...

The slow kinetics of the oxygen evolution reaction (OER) greatly hinders large-scale production hydrogen fuel from water splitting. Although many OER electrocatalysts have been developed to negotiate this difficult reaction, substantial progresses in design cheap, robust, and efficient catalysts are still required considered a huge challenge. Here, we report composite material consisting CoSe2 nanobelts anchored on nitrogen-doped reduced graphene oxides (denoted as NG-CoSe2) highly...

Not noble but effective: A novel Ni/NiO/CoSe2 hybrid material has been synthesized as an efficient catalyst for the hydrogen evolution reaction (HER; see picture). This new a cathodic onset potential at −0.03 V, Tafel slope of 39 mV per decade, and represents currently best Pt-free electrocatalyst HER in acidic medium. As service to our authors readers, this journal provides supporting information supplied by authors. Such materials are peer reviewed may be re-organized online delivery, not...

Nickel (Ni)-based nanomaterials have been intensively explored as promising noble-metal-free hydrogen evolution reaction (HER) electrocatalysts. Here, we report that uniform sea urchin-like NiSe nanofiber assemblies can be prepared on a large scale by ternary mixed solvent strategy. The new exhibits very high HER activity in 0.5 M H2SO4, comparable to the best performance of well-studied MoS2 catalysts. Tafel slope ∼64 mV per decade was observed for catalyst, suggesting Volmer–Heyrovsky...

Nicht edel, aber wirksam: Ein neues Ni/NiO/CoSe2-Hybridmaterial wurde als wirksamer Katalysator für die Wasserstoffentwicklung (siehe Bild) hergestellt. Dieser neue hat ein kathodisches Anfangspotential von −0.03 V und eine Tafel-Steigung 39 mV pro Dekade ist zurzeit der beste Platin-freie Elektrokatalysator in saurem Medium.

The friction and wear response of hard coatings is complex, which largely depends on a good combination hardness toughness, their service life difficult to predict. Hence, in this work, yet tough TiN were deposited using high-power impulse magnetron sputtering at 5–10 kW. With increasing power, the showed transition crystal texture from (200) (111), along with refinement microstructure, leading an improvement (H) 29.8–31.2 GPa effective Young’s modulus (E*) 310–365 GPa. 6.5 kW exhibited...

Enhancing the selectivity of catalytic processes has potential for substantially increasing sustainability chemical production. Herein, we establish relationships between reaction and molecular structure a homologous series key intermediates oxidative coupling alcohols on gold using combination experiment theory. We scale binding molecules with different alkyl structures chain lengths thereby demonstrate critical nature noncovalent van der Waals interactions in determining by modulating...

The non-oxidative dehydrogenation of alcohols is considered as an important method to produce aldehydes for the chemical industry and hydrogen gas. However, current industrial processes are oxidative, meaning that formed along with water, which, in addition being less energy efficient, poses separation problems. Herein production from methanol ethanol on clean dry Cu(111) Cu(110) surfaces was investigated order understand catalytic anhydrous alcohols. Both preferentially react under...

Developing a reliable technique to organize nanoscale building blocks into ordered one‐dimensional assemblies is of particular interest in range practical applications. Here, for the first time, it reported that platinum (Pt) nanoparticle chain networks can be assembled spontaneously solution on large scale. The in‐situ induced magnetic dipoles are believed driving force producing such elegant nanochains. alterant electronic structure Pt modified by very thin layer polyvinylpyrrolidone (PVP)...

The critical role of noncovalent van der Waals (vdW) interactions in determining the relative thermodynamic stability alkoxy intermediates has been demonstrated for Cu(110) surface using a combination experiment and theory. results may be significant selectivity control copper-based reactions alcohols. Previous examination this effect on Au(110) was also extended to include higher molecular weight alcohols; hierarchy strength binding alkoxys found same within experimental accuracy, with...

ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionORIGINAL ARTICLEThis notice is a correctionCorrection to "Water Oxidation Electrocatalyzed by an Efficient Mn3O4/CoSe2 Nanocomposite"Min-Rui Gao, Yun-Fei Xu, Jun Jiang, Ya-Rong Zheng, and Shu-Hong Yu*Cite this: J. Am. Chem. Soc. 2013, 135, 16, 6378Publication Date (Web):April 10, 2013Publication History Published online10 April 2013Published inissue 24...

Abstract Review: 403 refs.

Unique chain-like networks of platinum (Pt) nanocrystals can be self-organized spontaneously in a polyol solution. On page 916, S. H. Yu and co-workers find that situ-formed magnetic dipoles originating from the alterant Pt electronic structure modified by capped polyvinylpyrrolidone (PVP) molecules are found to driving force this self-assembled structures.

In this paper, based on the concept about system's decomposition and synthetical integration of subsystems, we propose an idea using intelligent agents to construct developing platform for system. platform, main control agent organizes with various functions makes them work collaboratively solve problems through communication cooperation mechanism. We use object-oriented method manage kinds resources in resource base. other words, system can effectively semi-structured unstructured by ways...