Reusable PdO/Al2O3-Nd2O3 photocatalysts in the UV photodegradation of phenol

被引：27
作者：
Barrera, A. [1 ]
Tzompantzi, F. [2 ]
Padilla, J. M. [1 ]
Casillas, J. E. [1 ]
Jacome-Acatitla, G. [2 ]
Cano, M. E. [1 ]
Gomez, R. [2 ]
机构：
[1] Univ Guadalajara, Ctr Univ Cienega, Lab Nanomat Cataliticos, Ocotlan 47820, Jalisco, Mexico
[2] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2014年 / 144卷
关键词：
PdO photocatalysts; Al2O3-Nd2O3; Sol-Gel; Photodegradation; Phenol; SOL-GEL METHOD; LAYERED DOUBLE HYDROXIDES; AQUEOUS-SOLUTION; CATALYTIC-ACTIVITY; IRON-OXIDES; BISPHENOL-A; DEGRADATION; TIO2; ACID; NANOPARTICLES;
D O I：
10.1016/j.apcatb.2013.07.024
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The UV photodegradation of phenol in aqueous medium using PdO supported on binary Al2O3-Nd2O3 oxides as photocatalysts was studied. The PdO/Al2O3-Nd2O3 photocatalysts were prepared by the sol-gel method and characterized by N-2 physisorption, XRD, Raman spectroscopy and UV-vis diffuse reflectance spectroscopy. Bare PdO/gamma-Al2O3 was found active for the photodegradation of phenol in aqueous medium. However, the addition of Nd2O3 to the gamma-Al2O3 improves the photocatalytic activity of PdO photocatalysts as well as the decrease of dissolved organic carbon in aqueous milieu. Highest photocatalytic activity of PdO photocatalysts was observed for 10 wt% of Nd2O3 added to the gamma-Al2O3 increasing the activity by a factor of two with respect to that of PdO/gamma-Al2O3 after six hours of irradiation. The photocatalytic activity in the degradation of phenol by using the recovered PdO/Al-Nd photocatalysts is preserved after reaction. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：362 / 368
页数：7
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