نتایج جستجو برای: basic nanocatalyst
تعداد نتایج: 272708 فیلتر نتایج به سال:
Molecular dynamics simulation of PEMFC cathodes based on ternary Pt70Pd15Au15 and Pt50Pd25Au25 nanocatalysts dispersed on carbon indicate systematic Au segregation from the particle bulk to the surface, leading to an Au layer coating the cluster surface and to the spontaneous formation of a Pt@Pd@Au core-shell structure. For Au content below 25at%, surface PtxPdy active sites are available for ...
In this study, the effect of Fe3O4-coated graphene as a nanocatalyst on the degradation kinetics of Ammonium Perchlorate and Glysydyl Azide Polymer (AP/GAP) composite propellants is investigated in order to modify and improve the burning rate of propellants. The SEM-EDX and EDX-Mapping surface analysis methods were used for structural and morphological study of the propellant containing nanoca...
Nano-graphene oxide was synthesized by the oxidation of graphite powders. The structural nature of the nano-graphene oxide was characterized by a variety of techniques including XRD, TEM, FT-IR and UV/Vis. The functional groups on its basal planes and edges of nano-grahene oxide play important role in catalytic activity. The catalytic activity of nano-graphene oxide was investigated on Crossed-...
The fabrication of iron and carbide nanoparticles (NPs) for catalytic reactions such as the growth carbon nanotubes (CNTs) compete with challenge covering a wide range substrates perfect control NP reactivity. We present in this work novel atomic layer deposition (ALD) process to grow Fe/Fe 3 C thin films over silica flat substrates. depositions were carried out exposing surface through various...
The ozonation reaction in a bubble column reactor (BCR) has been widely used the removal of phenol from wastewater, but efficiency this type is limited because low ozone solubility and reactivity system. In present study, degradation BCR was enhanced by using α-Al2O3 as packing material ZnO nanocatalyst. diameter height were 8 cm 180 cm, respectively. gas distributor designed to include 52 hole...
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