We report on a continuous-measurement campaign carried out in Vulcano (Aeolian islands, Sicily), devoted to the simultaneous monitoring of CO2 and H2O concentrations. The measurements were performed with an absorption spectrometer based on a semiconductor laser source emitting around a 2-microm wavelength. The emitted radiation was selectively absorbed by two molecular ro-vibrational transition...

This study aims to extend the light spectrum which could be absorbed by TiO2 infrared ray (IR) loading P4O10 in order promote CO2 reduction performance of photocatalyst. Three ranges with P4O10/TiO2 film are studied, ultra violet (UV) + visible (VIS) IR, VIS and IR only. also investigates impact molar ratio CO2/H2O or CO2/NH3 on characteristics film. The largest case is obtained at CO2:H2O = 1:...

We report a planar nickel complex coordinated with a pincer-type carbene-pyridine-carbene ligand which exhibits high selectivity for electrocatalytic CO2 reduction in the presence of H2O.

Os extratos de alcalóides de Lupinus spp., obtidos por métodos convencionais (maceração/ sonicação – extração em fase sólida; maceração/sonicação –extração líquido-líquido) e por SFE (extração com fluido supercrítico) usando CO2 e CO2 modificado (CO2/MeOH, CO2/EtOH, CO2/iPrOH e CO2/H2O) foram analisados por CGAR-DIC (cromatografia gasosa de alta resolução com detector de ionização de chama) e C...

We present the first results of AKARI Infrared Camera near-infrared spectroscopic survey of the Large Magellanic Cloud (LMC). We detected absorption features of the H2O ice 3.05μm and the CO2 ice 4.27μm stretching mode toward seven massive young stellar objects (YSOs). These samples are for the first time spectroscopically confirmed to be YSOs. We used a curve-of-growth method to evaluate the c...

We successfully synthesized SrNb2O6 with nanoplate morphology by a facile hydrothermal method. The SrNb2O6 nanoplate without any promoters or co-catalysts exhibited promising photocatalytic performance for the preferential reduction of CO2 with H2O vapour to CO and CH4 due to its high electron-hole separation and high CO2 chemisorption abilities.

In this work the kinetic data demanded for kinetic modeling were obtained in temperatures 350, 400, 450 and 500 oC by conducting experimentations on a Fe-Cr nanocatalyst prepared from a novel method and a commercial Fe-Cr-Cu one. The collected data were subjected to kinetic modeling by using two models derived from redox and associative mechanisms as well as an empirical one. The coefficients o...

A novel MgO-patched TiO2 microsphere photocatalyst demonstrated 10 times higher activity toward CO production from CO2 photoreduction with H2O vapor, when the reaction temperature increased from 50 to 150 °C. The catalytic performance of hybrid MgO-TiO2 was much more stable than TiO2, particularly at a higher temperature, likely due to easier desorption of reaction intermediates and the enhance...