“…As revealed by Thalgaspitiya et al, WO 3 fabricated at a higher calcination temperature and shorter reaction time exhibited a smaller specific surface area because of sintering. 73 Eventually, the decrement of active sites brings about lower catalytic activity in ODS. Recently, Zhang et al impregnated W precursors in the structure of poly(methyl methacrylate) and performed calcination to eliminate the template and oxidize the W to engineer 3D nanoporous WO 3 with oxygen defects (3DOM WO x ).…”
Section: Application Of Metal Oxides In Odsmentioning
Ceaseless heightening of pollution cases owing to the tremendous consumption of fossil fuels has navigated the world population towards environmental crisis and given urgency to the curtailing of noxious sulfur...
“…As revealed by Thalgaspitiya et al, WO 3 fabricated at a higher calcination temperature and shorter reaction time exhibited a smaller specific surface area because of sintering. 73 Eventually, the decrement of active sites brings about lower catalytic activity in ODS. Recently, Zhang et al impregnated W precursors in the structure of poly(methyl methacrylate) and performed calcination to eliminate the template and oxidize the W to engineer 3D nanoporous WO 3 with oxygen defects (3DOM WO x ).…”
Section: Application Of Metal Oxides In Odsmentioning
Ceaseless heightening of pollution cases owing to the tremendous consumption of fossil fuels has navigated the world population towards environmental crisis and given urgency to the curtailing of noxious sulfur...
“…AFM imaging (Figure B) revealed the material is only 5.6 nm thick, with a 2D sheetlike morphology (Figure C) mainly composed of W and O elements (Figure D). XPS revealed the element of W with an oxidation state of +6. − This evidence indicated that the ultrathin material was tungsten trioxide. That is also consistent with TGA analysis (Figure F) up to 700 °C in the nitrogen atmosphere (weight loss of 63.6 wt % calculated and 60.6 wt % experimental).…”
Controllable
self-assembly is of great significance to the design
and development of materials, determined by a complex interplay between
the molecular interactions, kinetics, and entropic effects at the
interface. So any comprehensive understanding of self-assembly behaviors
was considered to be a challenge. We report a step-by-step mechanical
action of the W-based complex powder and recorded the self-assembly
behaviors like cine film with TEM images. The whole assembly process
of a W-based complex from nanoparticle to nanosheets and, finally,
to 1D well-shaped hollow nanotubes was presented completely. When
affected by hydrogen bonding of water, the same complex was assembled
to 3D spongy structures which transformated to an ultrathin 2D WO3 film with a superficial area as large as 80 mm2 after heating at 700 °C.
“…This observation emphasizes the significance of both the oxidant and catalyst in the reaction, indicating that the elimination of DBT cannot be accomplished through adsorption on the SnO 2 –MoO 3 surface. Hence for DBT oxidation to occur, it needs both catalyst and oxidant [ 77 , 78 ], and in this work, 99.8% was removed when SnO 2 –MoO 3 catalyst in the presence of H 2 O 2 as an oxidant was used. Fig.…”
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