| Easy and Fast Synthesis of Pd-MWCNT/TiO2 by the Sol-Gel Method and its Recyclic Photodegradation of Rhodamine B |
| Shu Ye, Kefayat Ullah, Lei Zhu, Ze-Da Meng, Qian Sun, Won-Chun Oh |
| Department of Advanced Materials Science & Engineering, Hanseo University |
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| ABSTRACT |
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Multiwalled carbon nanotubes (MWCNTs) modified with Pd and $TiO_2$ composite catalysts were synthesized by the sol-gel method followed by solvothermal treatment at low temperature. The chemical composition and surface structure were characterized by X-ray diffraction (XRD), energy-dispersive X-ray (EDX) spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Photocatalytic recycle degradation experiments were carried out under both UV and visible light irradiation in the presence of MWCNT/$TiO_2$ and Pd-MWCNT/$TiO_2$ composites. As expected, the nanosized Pd-MWCNT/$TiO_2$ photocatalysts had enhanced activity over the non Pd treated MWCNT/$TiO_2$ material in the degradation of a rhodamine B (Rh.B) solution. An increase in photocatalytic activity was observed and attributed to an increase in the photo-absorption effect by MWCNTs and the cooperative effect of Pd and $TiO_2$ nanoparticles. According to the recycled results, the as-prepared Pd-MWCNT/$TiO_2$ sample had a good effect on it. |
| Key words:
Pd, MWCNT, $TiO_2$, Sol-gel, Photodegradation, Rh.B |
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