Synergies between electronic and geometric effects of Mo-doped Au nanoparticles for effective CO2 electrochemical reduction

2020 ◽  
Vol 8 (25) ◽  
pp. 12291-12295 ◽  
Author(s):  
Kun Sun ◽  
Yujin Ji ◽  
Yuanyue Liu ◽  
Zhijiang Wang
Keyword(s):  
Electrochemical Reduction ◽  
Au Nanoparticles ◽  
Geometric Effect ◽  
Enhanced Activity ◽  
Geometric Effects

Mo-doped Au catalysts with electron rich Au sites and the geometric effect of the Mo atom exhibit enhanced activity for CO2 reduction.

Defect-rich Ni–Ti layered double hydroxide as a highly efficient support for Au nanoparticles in base-free and solvent-free selective oxidation of benzyl alcohol

2018 ◽  
Vol 47 (15) ◽  
pp. 5226-5235 ◽  
Author(s):  
Mengran Liu ◽  
Guoli Fan ◽  
Jiaying Yu ◽  
Lan Yang ◽  
Feng Li
Keyword(s):  
Benzyl Alcohol ◽  
Selective Oxidation ◽  
Layered Double Hydroxide ◽  
Au Nanoparticles ◽  
Solvent Free ◽  
Highly Efficient ◽  
Oxidation Of Benzyl Alcohol ◽  
Enhanced Activity ◽  
Double Hydroxide

Defect-rich Ni–Ti layered double hydroxide supported Au nanoparticles exhibited greatly enhanced activity in the oxidation of benzyl alcohol.

scholarly journals Bipyridine‐Assisted Assembly of Au Nanoparticles on Cu Nanowires To Enhance the Electrochemical Reduction of CO 2

2019 ◽  
Vol 131 (40) ◽  
pp. 14238-14241 ◽  
Author(s):  
Jiaju Fu ◽  
Wenlei Zhu ◽  
Ying Chen ◽  
Zhouyang Yin ◽  
Yuyang Li ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Au Nanoparticles ◽  
Cu Nanowires

scholarly journals A study on the geometric effects of a concrete filling body in remaining roadways with fully mechanised caving

2021 ◽  
Vol 18 (5) ◽  
pp. 681-690
Author(s):  
Minglei Zhang ◽  
Yue Yang ◽  
Linsheng Gao
Keyword(s):  
Bearing Capacity ◽  
Surrounding Rock ◽  
Control Effect ◽  
Reinforcement Scheme ◽  
Geometric Effect ◽  
Deformation Control ◽  
Rock Stability ◽  
Coal Deformation ◽  
Concrete Filling ◽  
Geometric Effects

Abstract To address the problem of the concrete filling body (CFB) force failing to reach test strength in remaining roadways, the weakening effects due to aspect ratio and dimensional parameters on the actual CFB strength were investigated in this study. The geometric effects of CFB (including hoop and size effects) as well as the geometric effect coefficient determination method were analysed. Through laboratory tests and PFC numerical simulations, the hoop and size effect coefficients of the CFB in the Gaohe Coal Mine were studied. Furthermore, the calculation equations of actual strength and bearing capacity of the CFB were derived. Regarding the filling body failure and coal deformation in the remaining roadway located at the No. W1319 working face, the actual bearing capacity of CFB and surrounding rock stability during secondary exploitation were theoretically studied. The investigation suggests the adoption of a grouting reinforcement scheme for surrounding rock. The field applications performed have demonstrated that the deformation control effect in the remaining-roadway surrounding rock was effectively improved during second mining and the filling body beside the roadway suffered no additional damage. Studying the geometric effect of CFB can provide some theoretical guidance and industrial significance to accurately identify the filling body strength and reduce the failure risk of surrounding rock in remaining roadways.

scholarly journals Deconvolution of hardness from data obtained from nanoindentation of rough surfaces

1999 ◽  
Vol 14 (6) ◽  
pp. 2259-2268 ◽  
Author(s):  
M. S. Bobji ◽  
S. K. Biswas
Keyword(s):  
Rough Surface ◽  
General Framework ◽  
Rough Surfaces ◽  
Surface Zone ◽  
Near Surface ◽  
Property Variation ◽  
Geometric Effect ◽  
Compound Effect ◽  
Measured Hardness ◽  
Geometric Effects

Variation of hardness with penetration in nanoindentation of a rough surface is a compound effect of variation in asperity geometry with penetration, designated geometric effect, and genuine property gradients with depth as may exist in a near-surface zone. We simulate indentation of a rough surface numerically to elucidate the geometric effects and validate it by some model “macro” experiments. Finally, we formulate a general framework to deconvolute genuine property variation by normalizing the measured hardness with the geometric effect.

scholarly journals Electrochemical preparation system for unique mesoporous hemisphere gold nanoparticles using block copolymer micelles

RSC Advances ◽  
2020 ◽  
Vol 10 (14) ◽  
pp. 8309-8313 ◽  
Author(s):  
Hyunsoo Lim ◽  
Tomota Nagaura ◽  
Minjun Kim ◽  
Kenya Kani ◽  
Jeonghun Kim ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymer ◽  
Electrochemical Reduction ◽  
Au Nanoparticles ◽  
Electrochemical Preparation ◽  
Block Copolymer Micelles ◽  
Copolymer Micelles ◽  
Self Assembled ◽  
First Time

Mesoporous hemisphere Au nanoparticles using self-assembled micelles, for the first time, are demonstrated by using electrochemical reduction on a Ti substrate.

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