Results 211 to 220 of about 174,174 (316)

Chemodiversity of Essential Oils From Eugenia uniflora L. Collected in Different Phytophysiognomies of the Coastal Region of Rio de Janeiro

open access: yesChemistry &Biodiversity, EarlyView.
Essential oils from Eugenia uniflora collected in different coastal phytophysiognomies of Rio de Janeiro showed notable chemodiversity. GC‐MS and GC‐FID analyses revealed nine chemotypes, mainly rich in curzerene and selina‐1,3,7(11)‐trien‐8‐one. ABSTRACT This study aimed to evaluate the yield, color, and chemical composition of Eugenia uniflora ...
Eduardo Barros Duarte Junior   +13 more
wiley   +1 more source

Size Effects of TiO2 Nanoparticles as Supports for W‐ and NiW‐Catalysts for Selective 3‐Methylthiophene Desulfurization

open access: yesChemCatChem, EarlyView.
Rounded TiO2 nanoparticles we sucesfully synthesized with modulated sizes from 109 to 22 nm. We observed the WS2 and NiWS active phases forming parallel slabs to the surface. The presence of Ni helped W to be better dispersed, especially on the smallest nanoparticles, which resulted in the highest activity detected among the series.
Eduardo D. Gutiérrez‐López   +7 more
wiley   +1 more source

Thermally Assisted Photocatalytic Hydrogen Production Using TiO₂/Cu: Evaluation of Performance and Stability

open access: yesChemCatChem, EarlyView.
Thermal enhancement of TiO2/Cu photocatalysis boosts H2 production from 3,847 µmol g−1 h−1 at 40°C to 10,421 µmol g−1 h−1 at 70 °C. Elevated temperatures improve charge separation and reaction kinetics while maintaining catalyst stability. The synergistic photothermal approach demonstrates Cu/TiO2 as an efficient, noble‐metal‐free system for ...
Emanoel J. R. Sousa   +9 more
wiley   +1 more source

Wafer-scale radio frequency ZnO Schottky diodes and arithmetic circuits. [PDF]

open access: yesSci Rep
Mazo-Mantilla HF   +8 more
europepmc   +1 more source

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