Facile route to metal nitrides through melamine and metal oxides

2006 ◽  
Vol 16 (45) ◽  
pp. 4407 ◽  
Author(s):  
Huaizhou Zhao ◽  
Ming Lei ◽  
Xiaolong Chen ◽  
Weihua Tang
2008 ◽  
Vol 460 (1-2) ◽  
pp. 130-137 ◽  
Author(s):  
M. Lei ◽  
H.Z. Zhao ◽  
H. Yang ◽  
B. Song ◽  
L.Z. Cao ◽  
...  

Author(s):  
A. Saravanan

Nitrogen fixation is a standout amongst the most significant concoction responses in the biological system of our planet. Under the regularly pressure of the petroleum product exhaustion emergency and anthropogenic worldwide environmental change with ceaseless CO2 emanation in the 21st century, examine focusing on the union of NH3 under gentle conditions in an economical and condition agreeable way is lively and flourishing. Thusly, the focal point of this survey is the cutting edge designing of effective photocatalysts for dinitrogen (N2) obsession toward NH3 amalgamation. Creating green and feasible techniques for NH3 combination under surrounding conditions, utilizing sustainable power source, is firmly wanted, by both modern and logical scientists. Photosynthesis for ammonia synthesis, which has as of late pulled in noteworthy consideration, straightforwardly creates NH3 from daylight, and N2 and H2O by means of photocatalysis. Photocatalysts containing copious surface oxygen-opportunities and coordinative unsaturated metal locales have been demonstrated to be equipped for actuating N2 reduction under fitting photoexcitation. A few impetus materials are examined which incorporate metal oxides, metals sulfides, carbon-based impetuses, and metal nitrides which are for the most part right now being sought after for their better use of their synergist property towards nitrogen fixation. This chapter portrays the photocatalytic reduction systems of nitrate towards unwanted items (nitrite, ammonium) and the more alluring item (dinitrogen).


2020 ◽  
Vol 13 (12) ◽  
pp. 5097-5103
Author(s):  
Qi Hu ◽  
Ziyu Wang ◽  
Xiaowan Huang ◽  
Yongjie Qin ◽  
Hengpan Yang ◽  
...  

A facile route is developed for the synthesis of defective metal oxide nanoparticles within porous nanofibers by capitalizing on the distinct pyrolysis behaviors of metal–organic compounds and polymers for efficient overall water splitting.


Author(s):  
R. Ai ◽  
H.-J. Fan ◽  
L. D. Marks

It has been known for a long time that electron irradiation induces damage in maximal valence transition metal oxides such as TiO2, V2O5, and WO3, of which transition metal ions have an empty d-shell. This type of damage is excited by electronic transition and can be explained by the Knoteck-Feibelman mechanism (K-F mechanism). Although the K-F mechanism predicts that no damage should occur in transition metal oxides of which the transition metal ions have a partially filled d-shell, namely submaximal valence transition metal oxides, our recent study on ReO3 shows that submaximal valence transition metal oxides undergo damage during electron irradiation.ReO3 has a nearly cubic structure and contains a single unit in its cell: a = 3.73 Å, and α = 89°34'. TEM specimens were prepared by depositing dry powders onto a holey carbon film supported on a copper grid. Specimens were examined in Hitachi H-9000 and UHV H-9000 electron microscopes both operated at 300 keV accelerating voltage. The electron beam flux was maintained at about 10 A/cm2 during the observation.


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