Mesoporous cerium oxide nanospheres for the visible-light driven photocatalytic degradation of dyes

被引：59

作者：

Muduli, Subas K. ^{[1
]}

Wang, Songling ^{[2
]}

Chen, Shi ^{[3
]}

Ng, Chin Fan ^{[3
]}

Huan, Cheng Hon Alfred ^{[3
,4
]}

Sum, Tze Chien ^{[3
,5
,6
]}

Soo, Han Sen ^{[1
,6
]}

机构：

[1] Nanyang Technol Univ, Sch Math & Phys Sci, Div Chem & Biol Chem, Singapore 637371, Singapore

[2] Natl Univ Singapore, Dept Chem, Singapore 119260, Singapore

[3] Nanyang Technol Univ, Sch Math & Phys Sci, Div Phys & Appl Phys, Singapore 637371, Singapore

[4] Agcy Sci Technol & Res, Inst High Performance Comp, Singapore 138632, Singapore

[5] Energy Res Inst NTU ERI N, Singapore 637141, Singapore

[6] Singapore Berkeley Res Initiat Sustainable Energy, Singapore 138602, Singapore

来源：

BEILSTEIN JOURNAL OF NANOTECHNOLOGY | 2014年 / 5卷

基金：

新加坡国家研究基金会;

关键词：

cerium oxide; dye degradation; mesoporous; photocatalysis; visible light; NEUTRON-DIFFRACTION; SOLAR-CELLS; X-RAY; DIOXIDE; WATER; CEO2; NANOPARTICLES; NANOMATERIALS; MECHANISM; OXIDATION;

D O I：

10.3762/bjnano.5.60

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A facile, solvothermal synthesis of mesoporous cerium oxide nanospheres is reported for the purpose of the photocatalytic degradation of organic dyes and future applications in sustainable energy research. The earth-abundant, relatively affordable, mixed valence cerium oxide sample, which consists of predominantly Ce7O12, has been characterized by powder X-ray diffraction, X-ray photoelectron and UV-vis spectroscopy, and transmission electron microscopy. Together with N-2 sorption experiments, the data confirms that the new cerium oxide material is mesoporous and absorbs visible light. The photocatalytic degradation of rhodamin B is investigated with a series of radical scavengers, suggesting that the mechanism of photocatalytic activity under visible-light irradiation involves predominantly hydroxyl radicals as the active species.

引用

页码：517 / 523

页数：7

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