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Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts
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| Zeitschriftentitel: | PJCT |
|---|---|
| Personen und Körperschaften: | |
| In: | PJCT, 14, 2012, 2, S. 42-48 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Walter de Gruyter GmbH
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| Schlagwörter: |
| author_facet |
Zhang, Dongfang Zhang, Dongfang |
|---|---|
| author |
Zhang, Dongfang |
| spellingShingle |
Zhang, Dongfang PJCT Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts General Chemical Engineering General Chemistry Biotechnology |
| author_sort |
zhang, dongfang |
| spelling |
Zhang, Dongfang 1899-4741 1509-8117 Walter de Gruyter GmbH General Chemical Engineering General Chemistry Biotechnology http://dx.doi.org/10.2478/v10026-012-0069-2 <jats:title>Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<jats:sub>2</jats:sub> nanohybrid catalysts</jats:title> <jats:p>Heterogeneous photocatalytic removal of Rhodamine-B (RhB) dye by metallic Au nanopatrticles deposited TiO<jats:sub>2</jats:sub> photocatalyst was studied. For this study, a chemical reduction method by hydrazine hydrate for gold deposition was employed in order to synthesize Au/TiO<jats:sub>2</jats:sub> nanocomposite system. For the characterization of the synthesized nanomaterials, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), the Fourier transformation infrared spectroscopy (FTIR) and photoluminescence spectroscopy (PLS) techniques were performed. The obtained results show that the deposition of gold onto TiO<jats:sub>2</jats:sub> surface could effectively inhibit the recombination of the photoinduced electron and holes, improving the absorption capability for the visible light source and leading to the increased surface OH group density. The degradation experiment reveals that the efficiency of color removal from RhB aqueous solution containing Au/TiO<jats:sub>2</jats:sub> powders for the photocatalytic bleaching of RhB dye is more efficient than that of bare TiO<jats:sub>2</jats:sub> sample upon UV-vis light activation. In addition, degradation kinetics of RhB dye in aqueous suspensions can be well simulated by the Langmuir-Hinshelwood model and obeys the pseudo-first order law, with a decolorization rate of 0.0252 min<jats:sup>-1</jats:sup> to the photocatalytic removal of RhB dye.</jats:p> Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<sub>2</sub> nanohybrid catalysts PJCT |
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| title |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_unstemmed |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_full |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_fullStr |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_full_unstemmed |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_short |
Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_sort |
heterogeneous photocatalytic removal and reaction kinetics of rhodamine-b dye with au loaded tio<sub>2</sub> nanohybrid catalysts |
| topic |
General Chemical Engineering General Chemistry Biotechnology |
| url |
http://dx.doi.org/10.2478/v10026-012-0069-2 |
| publishDate |
2012 |
| physical |
42-48 |
| description |
<jats:title>Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<jats:sub>2</jats:sub> nanohybrid catalysts</jats:title>
<jats:p>Heterogeneous photocatalytic removal of Rhodamine-B (RhB) dye by metallic Au nanopatrticles deposited TiO<jats:sub>2</jats:sub> photocatalyst was studied. For this study, a chemical reduction method by hydrazine hydrate for gold deposition was employed in order to synthesize Au/TiO<jats:sub>2</jats:sub> nanocomposite system. For the characterization of the synthesized nanomaterials, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), the Fourier transformation infrared spectroscopy (FTIR) and photoluminescence spectroscopy (PLS) techniques were performed. The obtained results show that the deposition of gold onto TiO<jats:sub>2</jats:sub> surface could effectively inhibit the recombination of the photoinduced electron and holes, improving the absorption capability for the visible light source and leading to the increased surface OH group density. The degradation experiment reveals that the efficiency of color removal from RhB aqueous solution containing Au/TiO<jats:sub>2</jats:sub> powders for the photocatalytic bleaching of RhB dye is more efficient than that of bare TiO<jats:sub>2</jats:sub> sample upon UV-vis light activation. In addition, degradation kinetics of RhB dye in aqueous suspensions can be well simulated by the Langmuir-Hinshelwood model and obeys the pseudo-first order law, with a decolorization rate of 0.0252 min<jats:sup>-1</jats:sup> to the photocatalytic removal of RhB dye.</jats:p> |
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| description | <jats:title>Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<jats:sub>2</jats:sub> nanohybrid catalysts</jats:title> <jats:p>Heterogeneous photocatalytic removal of Rhodamine-B (RhB) dye by metallic Au nanopatrticles deposited TiO<jats:sub>2</jats:sub> photocatalyst was studied. For this study, a chemical reduction method by hydrazine hydrate for gold deposition was employed in order to synthesize Au/TiO<jats:sub>2</jats:sub> nanocomposite system. For the characterization of the synthesized nanomaterials, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), the Fourier transformation infrared spectroscopy (FTIR) and photoluminescence spectroscopy (PLS) techniques were performed. The obtained results show that the deposition of gold onto TiO<jats:sub>2</jats:sub> surface could effectively inhibit the recombination of the photoinduced electron and holes, improving the absorption capability for the visible light source and leading to the increased surface OH group density. The degradation experiment reveals that the efficiency of color removal from RhB aqueous solution containing Au/TiO<jats:sub>2</jats:sub> powders for the photocatalytic bleaching of RhB dye is more efficient than that of bare TiO<jats:sub>2</jats:sub> sample upon UV-vis light activation. In addition, degradation kinetics of RhB dye in aqueous suspensions can be well simulated by the Langmuir-Hinshelwood model and obeys the pseudo-first order law, with a decolorization rate of 0.0252 min<jats:sup>-1</jats:sup> to the photocatalytic removal of RhB dye.</jats:p> |
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| spelling | Zhang, Dongfang 1899-4741 1509-8117 Walter de Gruyter GmbH General Chemical Engineering General Chemistry Biotechnology http://dx.doi.org/10.2478/v10026-012-0069-2 <jats:title>Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<jats:sub>2</jats:sub> nanohybrid catalysts</jats:title> <jats:p>Heterogeneous photocatalytic removal of Rhodamine-B (RhB) dye by metallic Au nanopatrticles deposited TiO<jats:sub>2</jats:sub> photocatalyst was studied. For this study, a chemical reduction method by hydrazine hydrate for gold deposition was employed in order to synthesize Au/TiO<jats:sub>2</jats:sub> nanocomposite system. For the characterization of the synthesized nanomaterials, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectroscopy (DRS), the Fourier transformation infrared spectroscopy (FTIR) and photoluminescence spectroscopy (PLS) techniques were performed. The obtained results show that the deposition of gold onto TiO<jats:sub>2</jats:sub> surface could effectively inhibit the recombination of the photoinduced electron and holes, improving the absorption capability for the visible light source and leading to the increased surface OH group density. The degradation experiment reveals that the efficiency of color removal from RhB aqueous solution containing Au/TiO<jats:sub>2</jats:sub> powders for the photocatalytic bleaching of RhB dye is more efficient than that of bare TiO<jats:sub>2</jats:sub> sample upon UV-vis light activation. In addition, degradation kinetics of RhB dye in aqueous suspensions can be well simulated by the Langmuir-Hinshelwood model and obeys the pseudo-first order law, with a decolorization rate of 0.0252 min<jats:sup>-1</jats:sup> to the photocatalytic removal of RhB dye.</jats:p> Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO<sub>2</sub> nanohybrid catalysts PJCT |
| spellingShingle | Zhang, Dongfang, PJCT, Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts, General Chemical Engineering, General Chemistry, Biotechnology |
| title | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_full | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_fullStr | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_full_unstemmed | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_short | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| title_sort | heterogeneous photocatalytic removal and reaction kinetics of rhodamine-b dye with au loaded tio<sub>2</sub> nanohybrid catalysts |
| title_unstemmed | Heterogeneous photocatalytic removal and reaction kinetics of Rhodamine-B dye with Au loaded TiO2 nanohybrid catalysts |
| topic | General Chemical Engineering, General Chemistry, Biotechnology |
| url | http://dx.doi.org/10.2478/v10026-012-0069-2 |