TY - JOUR ID - 22798 TI - Silver Doped TiO2 Nanoparticles: Preparation, Characterization and Efficient Degradation of 2,4-dichlorophenol Under Visible Light JO - Journal of Water and Environmental Nanotechnology JA - JWENT LA - en SN - 2476-7204 AU - Sarteep, Zahra AU - Ebrahimian Pirbazari, Azadeh AU - Aroon, Mohammad Ali AD - Fouman Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran AD - Fouman Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran AD - Caspian Faculty of Engineering, College of Engineering, University of Tehran, Tehran, Iran Y1 - 2016 PY - 2016 VL - 1 IS - 2 SP - 135 EP - 144 KW - 2,4-dichlorophenol KW - Degradation KW - Silver KW - TiO2 DO - 10.7508/jwent.2016.02.007 N2 - Hydrothermally synthesized TiO2 nanoparticles containing different amounts of silver were characterized by X-Ray diffraction (XRD), Fourier transform infrared (FT-IR) and scanning electron microscopy equipped with energy dispersive X-ray microanalysis (SEM/EDX) techniques. XRD results showed prepared samples include 100% anatase phase. The presence of silver in TiO2 nanoparticle network was established by XRD, SEM/EDX and FT-IR techniques. The photocatalytic performance of the prepared catalysts was tested for the degradation of 2,4-dichlorophenol (2,4-DCP) under visible light.. The experiments demonstrated that 2,4-DCP was effectively degraded in the presence of Ag/TiO2 samples. It was confirmed that the presence of Ag on TiO2 catalysts could enhance the photocatalytic degradation of 2,4-DCP in aqueous suspension. It was found that an optimal dosage of 1.68 wt% Ag in TiO2 achieved the fastest 2,4-DCP degradation (95% after 180 min irradiation) under the experimental conditions. On the basis of various characterizations of the photocatalysts, the reactions involved to explain the photocatalytic activity enhancement due to Ag doping include a better separation of photogenerated charge carriers. GC-MS analysis showed the major intermediates of 2,4-DCP degradation are simple acids like oxalic acid, acetic acid, etc. as the final products. UR - https://www.jwent.net/article_22798.html L1 - https://www.jwent.net/article_22798_036fc4c3b06607480b9ae3547e0fcca8.pdf ER -