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- W620510999 abstract "Mesoporous 0.25Cr2O3–0.75ZrO2 binary oxide catalysts (CZ-H) with high specific surface areas were successfully synthesized by hydrothermal treatment. The effect of synthesis conditions, such as hydrothermal temperature and time of CZ-H nanomaterials were investigated by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HR-TEM), energy dispersive spectroscopic (EDS), UV–vis diffuse reflectance spectroscopy (DRS) and N2 adsorption–desorption measurements (BET). The XRD analysis indicated the formation of amorphous materials of binary oxides. The results showed that hydrothermal temperature and time of CZ-H nanomaterials had great influence on the average particle diameter and surface area. Under the optimum synthesis conditions, the best CZ-H nanomaterial synthesized at 210 °C for 3 h (i.e., CZ-H213), presented spherical structure with smallest average particle diameter found to be 1.5 nm and possessed highest surface area of 526.6 m2/g. Optical studies by UV–vis spectroscopy for the different CZ-H nanomaterials exhibit slightly blue shift from 3.20 to 3.33 eV due to quantum confined exciton absorption. Moreover, hydrothermal synthesis leads to catalysts with higher surface area and with better acid–base properties than conventional co-precipitation method. Compared to the other nanomaterials, the CZ-H213 catalyst appears to be the best candidate for further application in acid–base catalysis and reusability." @default.
- W620510999 created "2016-06-24" @default.
- W620510999 creator A5081029029 @default.
- W620510999 date "2015-07-01" @default.
- W620510999 modified "2023-10-16" @default.
- W620510999 title "Effect of hydrothermal treatment on catalytic activity of amorphous mesoporous Cr2O3–ZrO2 nanomaterials for ethanol oxidation" @default.
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- W620510999 doi "https://doi.org/10.1016/j.matchemphys.2015.04.053" @default.
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