Manipulating the water dissociation kinetics of Ni3N nanosheets via in situ interfacial engineering

2019 ◽  
Vol 7 (18) ◽  
pp. 10924-10929 ◽  
Author(s):  
Shuwen Niu ◽  
Yanyan Fang ◽  
Jianbin Zhou ◽  
Jinyan Cai ◽  
Yipeng Zang ◽  
...  
Keyword(s):  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Interfacial Engineering ◽  
Kinetics Of

The sluggish water dissociation kinetics of Ni3N is significantly accelerated by in situ interfacial engineering. Owing to the unique synergy between Ni3N and MoO2, Ni3N/MoO2 displays exceptional alkaline HER activity.

Accelerating water dissociation kinetics of Ni3N by tuning interfacial orbital coupling

Nano Research ◽  
2021 ◽  
Author(s):  
Yishang Wu ◽  
Yufang Xie ◽  
Shuwen Niu ◽  
Yipeng Zang ◽  
Jinyan Cai ◽  
...  
Keyword(s):  
Water Dissociation ◽  
Dissociation Kinetics ◽  
Kinetics Of

scholarly journals Oxygen Affinity of Transition Metal Cations: A Coherent Descriptor in Catalytic Oxygenate Transformations

2021 ◽  
Author(s):  
Huixiang Li ◽  
Peifang Yan ◽  
B.Q. Xu ◽  
Conrad Zhang
Keyword(s):  
Interaction Strength ◽  
Oxygen Affinity ◽  
Metal Cations ◽  
Intrinsic Property ◽  
Far Infrared ◽  
Dissociation Kinetics ◽  
Metal Chlorides ◽  
Glucose Isomerization ◽  
Kinetics Of

This work reports a complementary descriptor to acidity for metal cations, oxygen affinity, to scale the interaction strength of metal cations with oxygenate groups. A method for measuring oxygen affinity is developed in alkyl methylimidazolium chloride solvents using in-situ far infrared (FIR) spectroscopy. The relative oxygen affinity values of metal cations in metal chlorides with model compounds including cyclopentanol (for alcohols), cyclohexanone (for ketones), ethylene glycol diethyl ether (for ethers), and H2O are measured from the dissociation kinetics of the metal-oxygenate complexes. The concentrations of metal-chloride and metal-oxygenate complexes are determined during evaporative removal of oxygenate molecules according to the FIR absorbance of metal-Cl bonds. The oxygen affinity values are shown to reasonably account for the catalytic performances of metal cations in furfural-acetone condensation and glucose isomerization reactions. The oxygen affinity descriptor could be potentially exploited as an intrinsic property of metal cations broadly in metal chlorides and metal oxides.

In situ formed oxy/hydroxide antennas accelerating the water dissociation kinetics on a Co@N-doped carbon core–shell assembly for hydrogen production in alkaline solution

2019 ◽  
Vol 48 (31) ◽  
pp. 11927-11933 ◽  
Author(s):  
Tao Yang ◽  
Lang Pei ◽  
Shicheng Yan ◽  
Zhentao Yu ◽  
Tao Yu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Alkaline Solution ◽  
Water Dissociation ◽  
Core Shell ◽  
Dissociation Kinetics ◽  
Alkaline Electrolytes ◽  
Carbon Core

The hydrogen evolution reaction (HER) in alkaline electrolytes is restricted severely by sluggish water dissociation in the Volmer step.

In-Situ Formed Hydroxide Accelerating Water Dissociation Kinetics on Co3N for Hydrogen Production in Alkaline Solution

2018 ◽  
Vol 10 (26) ◽  
pp. 22102-22109 ◽  
Author(s):  
Zhe Xu ◽  
Wenchao Li ◽  
Yadong Yan ◽  
HongXu Wang ◽  
Heng Zhu ◽  
...  
Keyword(s):  
Hydrogen Production ◽  
Alkaline Solution ◽  
Water Dissociation ◽  
Dissociation Kinetics

In Situ Raman Study of the Formation and Dissociation Kinetics of Methane and Methane/Propane Hydrates

2020 ◽  
Vol 34 (5) ◽  
pp. 6288-6297
Author(s):  
Hai S. Truong-Lam ◽  
SeongDeok Seo ◽  
Suhkmann Kim ◽  
Yongwon Seo ◽  
Ju Dong Lee
Keyword(s):  
Dissociation Kinetics ◽  
In Situ Raman ◽  
Raman Study ◽  
Kinetics Of

In situ growth of a POMOF-derived nitride based composite on Cu foam to produce hydrogen with enhanced water dissociation kinetics

2019 ◽  
Vol 7 (22) ◽  
pp. 13559-13566 ◽  
Author(s):  
Yu-Jia Tang ◽  
Yu Wang ◽  
Hong-Jing Zhu ◽  
Kun Zhou ◽  
Ya-Qian Lan
Keyword(s):  
Water Dissociation ◽  
In Situ Growth ◽  
Dissociation Kinetics ◽  
Copper Foam ◽  
Cu Foam

A polyoxometalate-based MOFs and derived nitride-based composite was synthesized in situ on copper foam as an efficient HER electrocatalyst with enhanced water dissociation kinetics.

In situ study of electron beam-induced chemical vapor deposition of Au in an environmental TEM

1995 ◽  
Vol 53 ◽  
pp. 256-257
Author(s):  
J. Drucker ◽  
R. Sharma ◽  
J. Kouvetakis ◽  
K.H.J. Weiss
Keyword(s):  
Electron Beam ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Quantum Effect ◽  
Line Drawing ◽  
Chemical Vapor ◽  
Environmental Cell ◽  
Engineering Changes ◽  
Kinetics Of

Patterning of metals is a key element in the fabrication of integrated microelectronics. For circuit repair and engineering changes constructive lithography, writing techniques, based on electron, ion or photon beam-induced decomposition of precursor molecule and its deposition on top of a structure have gained wide acceptance Recently, scanning probe techniques have been used for line drawing and wire growth of W on a silicon substrate for quantum effect devices. The kinetics of electron beam induced W deposition from WF6 gas has been studied by adsorbing the gas on SiO2 surface and measuring the growth in a TEM for various exposure times. Our environmental cell allows us to control not only electron exposure time but also the gas pressure flow and the temperature. We have studied the growth kinetics of Au Chemical vapor deposition (CVD), in situ, at different temperatures with/without the electron beam on highly clean Si surfaces in an environmental cell fitted inside a TEM column.

In situ observation of the martensitic transformation in (Mg,Y)-PSZ

1986 ◽  
Vol 44 ◽  
pp. 500-501
Author(s):  
R-R. Lee
Keyword(s):  
Martensitic Transformation ◽  
High Strength ◽  
Nucleation And Growth ◽  
In Situ Observation ◽  
Considerable Potential ◽  
Transmission Electron ◽  
Structural Applications ◽  
Applied Stresses ◽  
Kinetics Of

Partially-stabilized ZrO2 (PSZ) ceramics have considerable potential for advanced structural applications because of their high strength and toughness. These properties derive from small tetragonal ZrO2 (t-ZrO2) precipitates in a cubic (c) ZrO2 matrix, which transform martensitically to monoclinic (m) symmetry under applied stresses. The kinetics of the martensitic transformation is believed to be nucleation controlled and the nucleation is always stress induced. In situ observation of the martensitic transformation using transmission electron microscopy provides considerable information about the nucleation and growth aspects of the transformation.

Growth kinetics of Al2Cu in an Al-1.5Cu thin film by in Situ TEM

1993 ◽  
Vol 51 ◽  
pp. 1172-1173
Author(s):  
M. Park ◽  
S.J. Krause ◽  
S.R. Wilson
Keyword(s):  
Thin Film ◽  
In Situ Tem ◽  
Collector Plate ◽  
Transmission Electron ◽  
Device Processing ◽  
Corrosion Susceptibility ◽  
Precipitation Phenomena ◽  
Semiconductor Chips ◽  
Kinetics Of

Cu alloying in Al interconnection lines on semiconductor chips improves their resistance to electromigration and hillock growth. Excess Cu in Al can result in the formation of Cu-rich Al2Cu (θ) precipitates. These precipitates can significantly increase corrosion susceptibility due to the galvanic action between the θ-phase and the adjacent Cu-depleted matrix. The size and distribution of the θ-phase are also closely related to the film susceptibility to electromigration voiding. Thus, an important issue is the precipitation phenomena which occur during thermal device processing steps. In bulk alloys, it was found that the θ precipitates can grow via the grain boundary “collector plate mechanism” at rates far greater than allowed by volume diffusion. In a thin film, however, one might expect that the growth rate of a θ precipitate might be altered by interfacial diffusion. In this work, we report on the growth (lengthening) kinetics of the θ-phase in Al-Cu thin films as examined by in-situ isothermal aging in transmission electron microscopy (TEM).

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