Removal of Orange II Dye in Water by Visible Light Assisted Photocatalytic Ozonation Using Bi2O3 and Au/Bi2O3 Nanorods

被引：125

作者：

Anandan, Sambandam ^{[1
,2
]}

Lee, Gang-Juan ^{[2
]}

Chen, Pei-Kuan ^{[2
]}

Fan, Chihhao ^{[3
]}

Wu, Jerry J. ^{[2
]}

机构：

[1] Natl Inst Technol, Dept Chem, Nanomat & Solar Energy Convers Lab, Tiruchirappalli 620015, India

[2] Feng Chia Univ, Dept Environm Engn & Sci, Taichung 407, Taiwan

[3] Ming Chi Univ Technol, Dept Safety Hlth & Environm Engn, Taipei, Taiwan

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2010年 / 49卷 / 20期

关键词：

TRANSITION-METAL IONS; DEPOSITION-PRECIPITATION; CHARGE-DISTRIBUTION; OXIDATION PROCESSES; GOLD NANOPARTICLES; OPTICAL-PROPERTIES; AQUEOUS-SOLUTION; THIN-FILMS; TIO2; DEGRADATION;

D O I：

10.1021/ie101361c

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

This paper presents the results of visible light assisted photocatalytic ozonation and other related oxidation processes for the removal of Orange II dye from water using Bi2O3 and Au/Bi2O3 nanorods prepared using microwave irradiation which was found effective compared to Bi2O3 particles prepared by conventional heat treatment method at 90 degrees C. Particularly, in the photocatalytie zonation using Au/Bi2O3 nanorods, a fourfold increase in the rate was observed as compared to that in the absence of Au/Bi2O3. This is because tuning semiconductor materials into nanosize could create high quantum confinement of electron and hole to increase the illumination efficiency. In addition, the deposition of nanomaterial can also be employed to enhance the mechanical strength of devices. That is, deposited Au nanoparticles act as electron traps to impede electron/hole recombination.

引用

页码：9729 / 9737

页数：9

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