Mechanism of CO production around oxygen vacancy of LaMnO3: an efficient and rapid evaluation of the doping effect on the kinetics and thermodynamic driving force of CO2-splitting

2020 ◽  
Vol 8 (4) ◽  
pp. 1709-1716 ◽  
Author(s):  
Mingkai Fu ◽  
Lei Wang ◽  
Tianzeng Ma ◽  
Haitao Ma ◽  
Huajun Xu ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Driving Force ◽  
Screening Method ◽  
Doping Effect ◽  
Rapid Evaluation ◽  
Thermodynamic Driving Force ◽  
Solar Thermochemical ◽  
Kinetics And Thermodynamic

A rapid perovskite screening method for the fast and efficient solar thermochemical production of CO.

scholarly journals Thermodynamics and ordering kinetics in asymmetric PS-b-PMMA block copolymer thin films

Soft Matter ◽  
2020 ◽  
Vol 16 (23) ◽  
pp. 5525-5533 ◽  
Author(s):  
Gabriele Seguini ◽  
Fabio Zanenga ◽  
Gianluca Cannetti ◽  
Michele Perego
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Time Evolution ◽  
Correlation Length ◽  
Driving Force ◽  
Annealing Temperatures ◽  
Ordering Kinetics ◽  
Thermodynamic Driving Force ◽  
Kinetics And Thermodynamic

The coupling between kinetics and thermodynamic driving force of standing cylinder-forming PS-b-PMMA BCPs on flat and unpatterned surface is investigated following the time evolution of the correlation length at different annealing temperatures.

scholarly journals Thermodynamic driving force of transient negative capacitance of ferroelectric capacitors

2021 ◽  
Vol 119 (2) ◽  
pp. 022901
Author(s):  
Yuanyuan Zhang ◽  
Xiaoqing Sun ◽  
Junshuai Chai ◽  
Hao Xu ◽  
Xueli Ma ◽  
...  
Keyword(s):  
Driving Force ◽  
Negative Capacitance ◽  
Thermodynamic Driving Force ◽  
Ferroelectric Capacitors

Nucleation Mechanism of IGF in the HAZs of Ti-Killed HSLA Steel

2014 ◽  
Vol 898 ◽  
pp. 161-163
Author(s):  
Dong Ming Duan ◽  
Meng Xia Tang ◽  
Run Wu ◽  
Yong Bu ◽  
Xiao Chen
Keyword(s):  
Electron Microscope ◽  
Driving Force ◽  
Hsla Steel ◽  
High Strength ◽  
Nucleation Mechanism ◽  
Titanium Oxides ◽  
Lattice Matching ◽  
Transmission Electron ◽  
Thermodynamic Driving Force ◽  
Inert Substrate

The weldability of the steel can be improved by formation of intra-granular ferrite (IGF) in heat affected zones (HAZs) on the edge of weld bead. The nucleation mechanism of IGF of Ti-killed high strength low alloyed (HSLA) steel has already been investigated with the aid of transmission electron microscope. Titanium oxides (Ti2O3) particles with the diameter of 0.4μm and Si-rich complex inclusions (Ti3O5+MnS) with that of 0.5μm can serve as the nuclei of IGF. The nucleation mechanism of IGF is proposed as follows: (1) inclusions are inert substrate. (2) The depletion of the austenite former Mn local to the inclusion increases the thermodynamic driving force of γα for transformation. (3) Lattice matching between inclusion and ferrite reduces the interfacial energy of opposing nucleation.

scholarly journals Thermodynamic Driving Forces and Chemical Reaction Fluxes; Reflections on the Steady State

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 699 ◽  
Author(s):  
Miloslav Pekař
Keyword(s):  
Steady State ◽  
Chemical Reaction ◽  
Driving Force ◽  
Driving Forces ◽  
Point Of View ◽  
Fluid Mixtures ◽  
Similar Work ◽  
Chemical Potentials ◽  
Thermodynamic Driving Force ◽  
Reacting Systems

Molar balances of continuous and batch reacting systems with a simple reaction are analyzed from the point of view of finding relationships between the thermodynamic driving force and the chemical reaction rate. Special attention is focused on the steady state, which has been the core subject of previous similar work. It is argued that such relationships should also contain, besides the thermodynamic driving force, a kinetic factor, and are of a specific form for a specific reacting system. More general analysis is provided by means of the non-equilibrium thermodynamics of linear fluid mixtures. Then, the driving force can be expressed either in the Gibbs energy (affinity) form or on the basis of chemical potentials. The relationships can be generally interpreted in terms of force, resistance and flux.

Stacking Faults and 3C Quantum Wells in Hexagonal SiC Polytypes

2006 ◽  
Vol 527-529 ◽  
pp. 351-354 ◽  
Author(s):  
M.S. Miao ◽  
Walter R.L. Lambrecht
Keyword(s):  
Band Structure ◽  
Quantum Wells ◽  
First Principles ◽  
Driving Force ◽  
Stacking Faults ◽  
Band Gaps ◽  
Partial Dislocations ◽  
Band Structure Calculations ◽  
Thermodynamic Driving Force ◽  
Structure Calculations

The electronic driving force for growth of stacking faults (SF) in n-type 4H SiC under annealing and in operating devices is discussed. This involves two separate aspects: an overall thermodynamic driving force due to the capture of electrons in interface states and the barriers that need to be overcome to create dislocation kinks which advance the motion of partial dislocations and hence expansion of SF. The second problem studied in this paper is whether 3C SiC quantum wells in 4H SiC can have band gaps lower than 3C SiC. First-principles band structure calculations show that this is not the case due to the intrinsic screening of the spontaneous polarization fields.

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