Exploration of CeO2 nanoparticles as a chemi-sensor and photo-catalyst for environmental applications

被引：233
作者：
Khan, Sher Bahadar [1 ]
Faisal, M.
Rahman, Mohammed M.
Jamal, Aslam
机构：
[1] Najran Univ, Fac Sci & Arts, Ctr Adv Mat & Nanoengn CAMNE, Najran 11001, Saudi Arabia
来源：
SCIENCE OF THE TOTAL ENVIRONMENT | 2011年 / 409卷 / 15期
关键词：
CeO2; nanoparticles; Structural properties; Optical properties; Ethanol chemi-sensor; Photo-catalyst; PHOTOCATALYZED DEGRADATION; AQUEOUS SUSPENSIONS; ETHANOL; DERIVATIVES;
D O I：
10.1016/j.scitotenv.2011.04.019
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
CeO2 nanoparticles were synthesized hydrothermally and utilized as redox mediator for the fabrication of efficient ethanol chemi-sensor. The developed chemi-sensor showed an excellent performance for electrocatalytic oxidization of ethanol by exhibiting higher sensitivity (0.92 mu A-cm(-2).mM(-1)) and lower limit of detection (0.124 +/- 0.010 mM) with the linear dynamic range of 0.17 mM-0.17 M. CeO2 nanoparticles have been characterized by field emission scanning electron microscopy (FESEM). Energy dispersive spectroscopy (EDS), X-ray powder diffraction (XRD), Raman spectrum, Fourier transform infrared spectroscopy (FTIR), and UV-visible absorption spectrum which revealed that the synthesized CeO2 is an aggregated form of optically active spherical nanoparticles with the range of 15-36 nm (average size of similar to 25 +/- 10 nm) and possessing well crystalline cubic phase. Additionally, CeO2 performed well as a photo-catalyst by degrading amido black and acridine orange. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2987 / 2992
页数：6
相关论文
共 27 条
[1]   Glucose sensor based on nano-baskets of tin oxide templated in porous alumina by plasma enhanced CVD [J].
Ansari, S. G. ;
Ansari, Z. A. ;
Wahab, Rizwan ;
Kim, Young-Soon ;
Khang, Gilson ;
Shin, Hyung-Shik .
BIOSENSORS & BIOELECTRONICS, 2008, 23 (12) :1838-1842
[2]   Urea sensor based on tin oxide thin films prepared by modified plasma enhanced CVD [J].
Ansari, S. G. ;
Ansari, Z. A. ;
Seo, Hyung-Kee ;
Kim, Gil-Sung ;
Kim, Young-Soon ;
Khang, Gilson ;
Shin, Hyung-Shik .
SENSORS AND ACTUATORS B-CHEMICAL, 2008, 132 (01) :265-271
[3]   Effect of nanostructure on the urea sensing properties of sol-gel synthesized ZnO [J].
Ansari, S. G. ;
Wahab, Rizwan ;
Ansari, Z. A. ;
Kim, Young-Soon ;
Khang, Gilson ;
Al-Hajry, A. ;
Shin, Hyung-Shik .
SENSORS AND ACTUATORS B-CHEMICAL, 2009, 137 (02) :566-573
[4]   EFFECT OF ETHANOL TREATMENT ON INDEXES OF CUMULATIVE OXIDATIVE STRESS [J].
BONDY, SC ;
GUO, SX .
EUROPEAN JOURNAL OF PHARMACOLOGY-ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY SECTION, 1994, 270 (04) :349-355
[5]  
Chu XiuJuan Chu XiuJuan, 2009, Modern Applied Science, V3, P177
[6]   Photocatalysed degradation of two selected dyes in UV-irradiated aqueous suspensions of titania [J].
Faisal, M. ;
Abu Tariq, M. ;
Muneer, M. .
DYES AND PIGMENTS, 2007, 72 (02) :233-239
[7]   Semiconductor-Mediated Photo-Catalyzed Degradation of Two Selected Pesticide Derivatives, 4-Cyanophenol and 4-Aminophenol in Aqueous Suspension [J].
Faisal, M. ;
Abu Tariq, M. ;
Muneer, M. .
SCIENCE OF ADVANCED MATERIALS, 2011, 3 (01) :66-72
[8]   Ethanol chemi-sensor: Evaluation of structural, optical and sensing properties of CuO nanosheets [J].
Faisal, M. ;
Khan, Sher Bahadar ;
Rahman, Mohammed M. ;
Jamal, Aslam ;
Umar, Ahmad .
MATERIALS LETTERS, 2011, 65 (09) :1400-1403
[9]   Photocatalysed Degradation of Two Selected Herbicide Derivatives in Aqueous Suspensions of Titanium Dioxide [J].
Faisal, M. ;
Abu Tariq, M. ;
Muneer, M. .
ADVANCED SCIENCE LETTERS, 2010, 3 (04) :512-517
[10]  
FAISAL M, 2011, J MAT SCI T IN PRESS
123