Results 51 to 60 of about 45,706 (265)
Re‐evaluation of silicon dioxide (E 551) as a food additive
EFSA Journal, 2018 The EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) provides a scientific opinion re‐evaluating the safety of silicon dioxide (E 551) when used as a food additive.
EFSA Panel on Food Additives and Nutrient Sources added to Food (ANS) +30 more
doaj +1 more source
Hydrogenated graphene on silicon dioxide surfaces [PDF]
Physical Review B, 2011 Hydrogenation of graphene on the α-quartz (0001) SiO_2 substrate is studied, considering different surface terminations in order to take into account the amorphic nature of the material. Our ab initio calculations show that the formation of graphane by hydrogen adsorption on graphene is energetically favored on hydroxyl and oxygen terminated surfaces ...
Havu, P., Ijäs, M., Harju, A.
openaire +2 more sources
Advanced Materials Interfaces, EarlyView.The gas‐phase decomposition of Al(acac)3 is investigated under inert, oxygen, and water‐containing conditions. Water is found to promote selective ligand removal and suppress hydrocarbon formation, while oxygen induces faster, less selective decomposition pathways.
Ilyas Adaköy +8 more
wiley +1 more source
East European Journal of PhysicsSilicon Dioxide nanoparticles of high purity was synthesized using a novel technique of obtaining sodium metasilicate from de-aluminated metakaolin. The process involved taking the de-aluminated metakaolin through several recrystallization steps to form ...
D.B. Puzer +7 more
doaj +1 more source
Growth and Etch Rate Study of Low Temperature Anodic Silicon Dioxide Thin Films
The Scientific World Journal, 2014 Silicon dioxide (SiO2) thin films are most commonly used insulating films in the fabrication of silicon-based integrated circuits (ICs) and microelectromechanical systems (MEMS).
Akarapu Ashok, Prem Pal
doaj +1 more source
Rice husk ash and zeolite-siliceous rock as sources of amorphous silicon dioxide [PDF]
E3S Web of ConferencesThe present article is referred to the study of amorphous analogs of silicon dioxide obtained from raw materials of plant and fossil origin available on the domestic market.
Gotlib Elena +3 more
doaj +1 more source
Atomic Layer Deposition of Metallic Molybdenum Dioxide Thin Films Enabling High‐k Rutile Capacitors
Advanced Materials Interfaces, EarlyView.The first direct atomic layer deposition (ALD) process of molybdenum dioxide (MoO2) thin films is reported using molybdenum(II) acetate dimer (Mo2(OAc)4) and oxygen (O2) as precursors at 235°C–275°C. The films are crystalline, exceptionally pure, and conductive.
Alexey Ganzhinov +8 more
wiley +1 more source
Carbon-Silica Composites with Cellulose Acetate, Polyisocyanate and Copper Chloride
Фізика і хімія твердого тіла, 2016 Cellulose acetate and polyisocyanate copolymer synthesized by simultaneous mixing of cellulose acetate and polyisocyanate with acetone solution of Copper chloride and fumed silicon dioxide was carbonized in a silicon dioxide template.
V. V. Goncharuk +5 more
doaj +1 more source
Advanced Materials Interfaces, EarlyView.Chitosan–TiO2 composite hydrogels combine adsorption of organic pollutants with photocatalysis, allowing to remove 85% of a broadly diffused antibiotic (sulfamethoxazole) under direct sunlight irradiation, opening great promises for point‐of‐use, outdoor applications.
Beatrice Cerea +5 more
wiley +1 more source
Advanced Materials Interfaces, EarlyView.Schematic illustration of a sustainable nanofabrication process: chitosan derived from natural sources is used as a biodegradable thin film resist, patterned via Constant Pulse‐Assisted Force Lithography (CP‐AFL) to create tunable nanogrooves. These grooves template gold nanowire formation, enabling high‐resolution nanopatterning under ambient ...
Paolo Pellegrino +7 more
wiley +1 more source