Results 111 to 120 of about 18,900 (300)

The Importance of Metal‐Organic Framework Linker Atoms for CO2 Reduction: A DFT Study

open access: yesAdvanced Science, EarlyView.
Using DFT, we examine the role of linker atoms in CO2 reduction on copper‐based metal organic frameworks (Cu MOFs). Our calculations reveal that linker atoms may serve as both CO2 and H‐shuttling sites and suggest linker electrostatics as a descriptor for linker activity. ABSTRACT Although the metal within the secondary building unit of a metal‐organic
Ugochukwu Nwosu, Samira Siahrostami
wiley   +1 more source

Analysis and Research on Associated Elements Nb, Zr, Ga and Sc in Sedimentary Rare Earth Ores

open access: yesKuangchan zonghe liyong
Through comparative studies of different digestion methods for five ore samples with varying grades collected from adjacent mining areas in Yunnan and Guizhou Provinces, combined with optimization of instrumental parameters and accuracy precision tests ...
Shujun LIU   +4 more
doaj   +1 more source

Architected Inverse Nacre Hydrogels With High Strength and Crack‐Insensitive Toughness

open access: yesAdvanced Science, EarlyView.
Hydrogels hold promise for biomedical and engineering applications, yet their practical use is fundamentally limited by the strength‐toughness trade‐off and poor fatigue resistance. In this study, a bioinspired inverse nacre architecture constructed via a scalable thermo‐calendering process is introduced, which overcomes these classic limitations ...
Haidi Wu   +10 more
wiley   +1 more source

Novel Extraction Process Of Rare Earth Elements From NdFeB Powders Via Alkaline Treatment

open access: yesArchives of Metallurgy and Materials, 2015
The alkaline treatment of NdFeB powders in NaOH solution at various equivalent amounts of NaOH at 100°C was performed. The resultant powders were then leached in 0.5M H2SO4 solution at 25°C for 2 minutes.
Chung K.W., Kim C.-J., Yoon H.-S.
doaj   +1 more source

Highly Flexible and Conformable ZnO/FeGa Magnetoelectric Heterostructures for Skin wound Healing

open access: yesAdvanced Science, EarlyView.
The magnetic field‐induced electric field generated by a highly flexile ZnO(piezoelectric)/FeGa(magnetostrictive) magnetoelectric heterostructure embedded in the low Young's modulus elastomer PDMS has been used to stimulate the wound healing processes.
Filippos Perdikos   +17 more
wiley   +1 more source

The influence of mechanical activation of chalcopyrite on the selective leaching of copper by sulphuric acid [PDF]

open access: yesMetalurgija, 2006
In this paper chalcopyrite, CuFeS2, has been selective leached by H2SO4 as leaching agent (170 g/dm3) in procedure of hydrometallurgical production of copper. Mechanical activation of the chalcopyrite resulted in mechanochemical surface oxidation as well
Achimovičová, M.   +2 more
doaj  

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