Photocatalytic study of two-dimensional ZnO nanopellets in the decomposition of methylene blue

被引：116

作者：

Chiu, W. S. ^{[1
]}

Khiew, P. S. ^{[1
]}

Cloke, M. ^{[1
]}

Isa, D. ^{[1
]}

Tan, T. K. ^{[1
]}

Radiman, S. ^{[2
]}

Abd-Shukor, R. ^{[2
]}

Abd Hamid, M. A. ^{[2
]}

Huang, N. M. ^{[3
]}

Lim, H. N. ^{[4
]}

Chia, C. H. ^{[3
]}

机构：

[1] Univ Nottingham, Fac Engn, Dept Chem Engn, Semenyih 43500, Selangor Darul, Malaysia

[2] Univ Kebangsaan Malaysia, Fac Sci & Technol UKM, Sch Appl Phys, Bangi 43600, Selangor Darul, Malaysia

[3] Univ Malaya, Fac Sci, Dept Phys, Kuala Lumpur 50603, Malaysia

[4] Univ Putra Malaysia, Fac Sci, Dept Chem, Upm Serdang 43400, Selangor Darul, Malaysia

来源：

CHEMICAL ENGINEERING JOURNAL | 2010年 / 158卷 / 02期

关键词：

Zinc oxide; Two-dimensional nanopellets; Characterization; Photocatalyst; Methylene blue; Pseudo-first-order; METAL-OXIDE PARTICLES/CLUSTERS; MAGNESIUM-OXIDE; NANOCRYSTALS; NANOPARTICLES; TIO2; ADSORPTION; DIOXIDE; ARRAYS; NANOSTRUCTURES; DEGRADATION;

D O I：

10.1016/j.cej.2010.01.052

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We report several significant photoclecomposition rates of methylene blue (MB) obtained before and after the refluxing process of own-synthesized two-dimensional (2D) zinc oxide (ZnO) nanopellets. Each photodecomposition rate of MB was found highly dependent on the weight of photocatalyst. The existing photodecomposition rate has been successfully improved to a factor of 22.0 times through refluxing process in excessive pyridine where the surface capping ligand (oleic acid) is removed from the 2D ZnO nanopellets. On the other hand, the refluxed photocatalyst (0.04 g) in this study was found to exhibit excellent recyclability up to three cycles. Furthermore. X-ray powder diffraction spectrums for the refluxed photocatatalyst, respectively, before and after three cycles of photocatalytic reactions, has generated the same patterns showing that the photocatalyst is stable and feasible to be used as an efficient photocatalyst material. Hence, these 20 ZnO nanopellets would provide a new alternative route as a highly efficient photocatalyst for wastewater treatment. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：345 / 352

页数：8

共 51 条

[1] Sum Frequency Generation and Catalytic Reaction Studies of the Removal of Organic Capping Agents from Pt Nanoparticles by UV-Ozone Treatment
Aliaga, Cesar
Park, Jeong Y.
Yamada, Yusuke
Lee, Hyun Sook
Tsung, Chia-Kuang
Yang, Peidong
Somorjai, Gabor A.
[J]. JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (15) : 6150 - 6155
[2] The use of nanocrystals in biological detection
Alivisatos, P
[J]. NATURE BIOTECHNOLOGY, 2004, 22 (01) : 47 - 52
[3] Semiconductor nanocrystals as fluorescent biological labels
Bruchez, M
Moronne, M
Gin, P
Weiss, S
Alivisatos, AP
[J]. SCIENCE, 1998, 281 (5385) : 2013 - 2016
[4] Quantum dot bioconjugates for ultrasensitive nonisotopic detection
Chan, WCW
Nie, SM
[J]. SCIENCE, 1998, 281 (5385) : 2016 - 2018
[5] Synthesis of two-dimensional ZnO nanopellets by pyrolysis of zinc oleate
Chiu, W. S.
Khiew, P. S.
Isa, D.
Cloke, M.
Radiman, S.
Abd-Shukor, R.
Abdullah, M. H.
Huang, N. M.
[J]. CHEMICAL ENGINEERING JOURNAL, 2008, 142 (03) : 337 - 343
[6] Tunable coercivity of CoFe2O4 nanoparticles via thermal annealing treatment
Chiu, W. S.
Radiman, S.
Abd-Shukor, R.
Abdullah, M. H.
Khiew, P. S.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 459 (1-2) : 291 - 297
[7] One pot synthesis of monodisperse Fe3O4 nanocrystals by pyrolysis reaction of organometallic compound
Chiu, W. S.
Radiman, S.
Abdullah, M. H.
Khiew, P. S.
Huang, N. M.
Abd-Shukor, R.
[J]. MATERIALS CHEMISTRY AND PHYSICS, 2007, 106 (2-3) : 231 - 235
[8] COLVIN VL, 1994, NATURE, V370, P354, DOI 10.1038/370354a0
[9] EMSLEY J., 2001, Titanium. Nature's Building Bocks: An A-Z Guide to the Elements
[10] Functionalization of electrospun TiO2 nanofibers with Pt nanoparticles and nanowires for catalytic applications
Formo, Eric
Lee, Eric
Campbell, Dean
Xia, Younan
[J]. NANO LETTERS, 2008, 8 (02) : 668 - 672

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