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    Wyświetlanie 1-4 z 4
    Tytuł:
    Preparation and characterization of TiO2 and TiO2P25 nanomaterial and photocatalytic application
    Autorzy:
    Kamalakkannan, J.
    Karthikeyan, B.
    Senthilvelan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182809.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    HR-SEM
    HR-TEM
    Photocatalytic properties
    Reusable
    Opis:
    TiO2 nanomaterial was prepared by precipitation method and sonication technique. The nanomaterial was characterized by HR-SEM with EDX, TEM, XRD, FT-IR and PL analysis. The photocatalytic activity of TiO2 was much better than that of TiO2–P25 under UV-light irradiation at 365 nm. The photocatalytic activity was evaluated from the photodegradation of malachite green (MAG). The influence of operational parameters such as the effect of catalyst loading dye concentration and chemical oxygen demand measurements had also been investigated. The Photodegradation was found to follow the pseudo-first-order kinetics. Hydroxyl radical formation in the mechanism was confirmed by fluorescence quenching technique. It was proposed that the catalyst is found to be stable and reusable.
    Źródło:
    World Scientific News; 2017, 65; 81-93
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Highly developed construction of Heterostructured InWO3-InMoO3 loaded-TiO2 nanomaterial and Expanding multi-application
    Autorzy:
    Kamalakkannan, J.
    Senthilvelan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1178704.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    HR-TEM
    Photocatalytic
    antibacterial activity
    electrochemical study
    Opis:
    InWO3-InMoO3 loaded-TiO2 nanomaterial was synthesised by co-precipitation method and sonication technique. The nanomaterial was characterized by High-resolution scanning electron microscopy (HR-SEM) with elementary dispersive X-ray (EDX), High-resolution transmission electron microscopy (HR-TEM), photoluminescence spectroscopy (PL) and UV-Vis diffuse reflectance spectroscopy (DRS). The photocatalytic activity of InWO3-InMoO3 loaded-TiO2 nanomaterial was studied from the photodegradation of methyl green (MEG) and methylene blue (MB) under UV-light irradiation at 365 nm. The hydroxyl radical formation in the mechanism was confirmed by fluorescence quenching technique. The mineralization confirmed by chemical oxygen demand measurements. A flaxisible mechanism is proposed for higher catalytic activity of InWO3-InMoO3-TiO2 under UV-light for 365 nm. This catalyst was found to be stable and reusable without appreciable loss of catalytic activity up to five cycles. The InWO3- InMoO3 loaded-TiO2 nanomaterial on MEG was high photocatalytic activity that of MB so high photocatalytic activity has been discussed by first order kinetics, rate constant value and high quantum yield. This material was showed increased hydrophobicity that of TiO2 electrochemical study and antibacterial activity of the analysis was also studied.
    Źródło:
    World Scientific News; 2017, 67, 2; 338-364
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Morphology convenient flower like nanostructures of CdO-SiO2 nanomaterial and its photocatalytic application
    Autorzy:
    Kamalakkannan, J.
    Senthilvelan, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1182834.pdf
    Data publikacji:
    2017
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    FE-SEM; HR-TEM; Photocatalytic activity; •OH analysis
    Opis:
    Highly efficient CdO-SiO2 nanomaterial was synthesized by Sol-gel method and sonication technique. The nanomaterial was characterized by Field-emission Scanning electron microscopy (FE-SEM) with elementary dispersive X-ray (EDX), High-resolution transmission electron microscopy (HR-TEM), photoluminescence spectroscopy (PL) and Ultraviolet-Visible diffuse reflectance spectra (DRS). The photocatalytic activity of CdO-SiO2 nanomaterial was studied from the photodegradation of Rh B as it has maximum efficiency at pH = 7 under UV-light irradiation at 365 nm. The photodegradation of dye various Catalyst loading and dye concentration is parameters have been studied. The hydroxyl radical formation in the mechanism was confirmed by fluorescence quenching technique. The mineralization of dye is confirmed by chemical oxygen demand measurements. An achievable mechanism is proposed for higher activity of CdO-SiO2 under UV-light at 365 nm. This catalyst was found to be stable and reusable.
    Źródło:
    World Scientific News; 2017, 62; 46-63
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Preparation of Nano Aluminium Powder (NAP) using a Thermal Plasma: Process Development and Characterization
    Autorzy:
    Pant, A.
    Seth, T.
    Raut, V. B.
    Gajbhiye, V. P.
    Newale, S. P.
    Nandi, A. K.
    Prasanth, H.
    Pandey, R. K.
    Powiązania:
    https://bibliotekanauki.pl/articles/358835.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
    Tematy:
    nano aluminium
    thermal plasma
    DC arc plasma
    RF induction plasma
    aluminium content
    BET surface area
    HR-TEM
    Opis:
    A bottom up approach for the preparation of Nano Aluminium Powder (NAP) using a Transferred Arc Thermal Plasma Reactor (TAPR) is described. The aluminium block is subjected to evaporation by the application of a thermal plasma. The aluminium vapour produced is rapidly quenched to room temperature resulting in crystallization of the aluminium vapour in nano-particulate form. Various process parameters, such as the plasma torch power, reactor pressure and plasma gas composition were optimized. This paper also describes the characterization of NAP by analytical methods, for the estimation of the Active Aluminium Content (AAC), Total Aluminium Content (TAC), XRD, bulk density, BET surface area, HR-TEM etc. The results are compared with those for samples prepared in other thermal plasma reactors, such as the DC Arc Plasma Reactor (DCAPR) and the RF Induction Thermal Plasma Reactor (RFITPR), and for commercially available NAP samples (ALEX, prepared by the EEW technique).
    Źródło:
    Central European Journal of Energetic Materials; 2016, 13, 1; 53-71
    1733-7178
    Pojawia się w:
    Central European Journal of Energetic Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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