Articles written in Bulletin of Materials Science

    • Experiment and prediction on thermal conductivity of Al2O3/ZnO nano thin film interface structure

      Ping Yang Liqiang Zhang Haiying Yang Dongjing Liu Xialong Li

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      We predict that there is a critical value of Al2O3/ZnO nano thin interface thickness based on two assumptions according to an interesting phenomenon, which the thermal conductivity (TC) trend of Al2O3/ZnO nano thin interface is consistent with that of relevant single nano thin interface when the nano thin interface thickness is > 300 nm; however, TC of Al2O3/ZnO nano thin interface is higher than that of relevant single nano thin interface when the thin films thickness is < 10 nm. This prediction may build a basis for the understanding of interface between two different oxide materials. It implies an idea for new generation of semiconductor devices manufacturing.

    • A facile approach for the synthesis of porous KTiNbO$_5$ catalyst with good activity for hydrogenation of p-nitrophenol


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      Through simple ions exchange and hydrothermal reaction, the porous structure of MnO$_2$-pillared KTiNbO$_5$ composites were synthesized. The fabricated porous structure makes KTiNbO$_5$ as good absorbance property for methylthionine chloride (MB). Furthermore, the as-synthesized porous KTiNbO$_5$ can perform photocatalytic degradation of MB with good effectivity. What’s more, after loading Au nanoparticles into it, a novel catalyst for catalytic hydrogenation of p-nitrophenolwas obtained. The possible ‘layer-by-layer quilt expose’ mode of Au-MnO$_2$-KTiNbO$_5$ composites for catalytichydrogenation of p-nitrophenol was proposed.

    • Sn$^{4+}$-doped TiO$_2$ nanorod array film with enhanced visible light photocatalytic activity


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      Sn$^{4+}$-doped TiO$_2$ nanorod array film (NAF) on the fluorine-doped tin oxide (FTO) conducting glass was successfully synthesized using the facile hydrothermal method. The NAF photocatalysts were characterized by the scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV–Vis diffuse reflectance spectra (DRS). The SEM images showed that both doped and pure TiO2 NAFs exhibited a good nanorod array structure. Sn$^{4+}$-doped TiO$_2$ NAF still maintains rutile crystal structure, which was identical to that of pure TiO$_2$ sample. By means of the DRS measurement, it was found thatthe Sn$^{4+}$ doping in TiO$_2$ nanorod could induce an obvious enhancement of visible light absorption owing to the introduction of doping energy level in the band gap of TiO$_2$. The degradation of methyl orange (MO) demonstrated that the Sn$^{4+}$-doped TiO$_2$ NAF exhibited an enhanced photocatalytic activity than pure TiO$_2$ NAF under the visible light ($\lambda > 400$ nm) irradiation,which should be attributed to the enhanced visible light response and improved separation efficiency of photogenerated carriers of Sn$^{4+}$-doped TiO$_2$.

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