NDLI: A facile and high-yield approach to synthesize one-dimensional CeO<sub>2</sub> nanotubes with well-shaped hollow interior as a photocatalyst for degradation of toxic pollutants

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A facile and high-yield approach to synthesize one-dimensional CeO₂ nanotubes with well-shaped hollow interior as a photocatalyst for degradation of toxic pollutants

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Yanhui Xu, Yi-Jun Tang, Zi-Rong
Copyright Year	2011
Abstract	A facile, template-free and high-yield synthesis of single-crystalline cerium dioxide nanotubes (CeO2-NT) has been reported via a “casually-modified” approach based on the hydrothermal treatment of Ce(OH)CO3 precursors with alkali solution in an aqueous phase. This simple modification in synthesis procedures not only improves the yield of CeO2-NT remarkably, but also gives rise to the formation of CeO2-NT featuring excellent nanotubular open-ended structure with a well-shaped hollow interior. The collection techniques of BET, UV/visible diffuse reflectance spectra (DRS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM) analysis have been employed to characterize the morphology and optical properties of the as-prepared CeO2-NT. Significantly, we demonstrate that CeO2-NT exhibits a markedly enhanced photocatalytic activity and stability as compared with its counterpart of CeO2 nanoparticles and commercial TiO2 (P25) toward the degradation of aromatic benzene, a well-known toxic pollutant that commonly occurs in urban ambient air and is of significant concern regarding environmental health because of its toxic, mutagenic, or carcinogenic properties. This represents a first example to demonstrate the advantage of CeO2 nanotubes as photocatalyst as compared to its counterpart of CeO2 nanoparticles, clearly suggesting the morphology/shape-dependent photocatalytic behaviour of CeO2 materials. Therefore, our current work not only offers a simple approach for fabrication of open-ended CeO2-NT with well-shaped hollow interior, but also demonstrates the promising potential of the applications of CeO2-NT, CeO2-NT-based and other metal oxide nanotube-based materials in the area of photocatalysis, which will inevitably enrich the intriguing chemistry of morphology/shape-dependent heterogeneous photocatalysis and thermal catalysis.
Starting Page	1772
Ending Page	1777
Page Count	6
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	1
Issue Number	9
Journal	RSC Advances
DOI	10.1039/c1ra00518a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	BET Hydrolysis Organic chemistry Hydrothermal synthesis Transmission electron microscopy Benzene Photocatalysis Cerium(IV) oxide Environmental health Scanning electron microscope
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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