Annealing induced surface restructuring in hydrothermally synthesized gallium oxide nano-cuboids

2021 ◽  
Vol 554 ◽  
pp. 125946
Author(s):  
Siddhartha Suman ◽  
Nagaraju Mukurala ◽  
Ajay K. Kushwaha
2016 ◽  
Vol 136 (4) ◽  
pp. 479-483
Author(s):  
Masataka Higashiwaki ◽  
Kohei Sasaki ◽  
Hisashi Murakami ◽  
Yoshinao Kumagai ◽  
Akito Kuramata

2020 ◽  
Author(s):  
Jin Soo Lim ◽  
Jonathan Vandermause ◽  
Matthijs A. van Spronsen ◽  
Albert Musaelian ◽  
Christopher R. O’Connor ◽  
...  

Restructuring of interface plays a crucial role in materials science and heterogeneous catalysis. Bimetallic systems, in particular, often adopt very different composition and morphology at surfaces compared to the bulk. For the first time, we reveal a detailed atomistic picture of the long-timescale restructuring of Pd deposited on Ag, using microscopy, spectroscopy, and novel simulation methods. Encapsulation of Pd by Ag always precedes layer-by-layer dissolution of Pd, resulting in significant Ag migration out of the surface and extensive vacancy pits. These metastable structures are of vital catalytic importance, as Ag-encapsulated Pd remains much more accessible to reactants than bulk-dissolved Pd. The underlying mechanisms are uncovered by performing fast and large-scale machine-learning molecular dynamics, followed by our newly developed method for complete characterization of atomic surface restructuring events. Our approach is broadly applicable to other multimetallic systems of interest and enables the previously impractical mechanistic investigation of restructuring dynamics.


2019 ◽  
Vol 1410 ◽  
pp. 012233 ◽  
Author(s):  
R V Tominov ◽  
N A Polupanov ◽  
V I Avilov ◽  
M S Solodovnik ◽  
N V Parshina ◽  
...  

2021 ◽  
Vol 129 (8) ◽  
pp. 085301
Author(s):  
Robert H. Montgomery ◽  
Yuewei Zhang ◽  
Chao Yuan ◽  
Samuel Kim ◽  
Jingjing Shi ◽  
...  

2021 ◽  
Vol 133 ◽  
pp. 105939
Author(s):  
Pengcheng Gao ◽  
Baimei Tan ◽  
Fan Yang ◽  
Hui Li ◽  
Na Bian ◽  
...  

2021 ◽  
Vol 289 ◽  
pp. 129378
Author(s):  
Wei Liu ◽  
Baoqin Wang ◽  
Chenchen Cui ◽  
Yiwen Zhang ◽  
Lixuan Wang ◽  
...  

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