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dc.contributor.authorZhang, Dongen
dc.contributor.authorWu, Jinbo
dc.contributor.authorZhou, Bingpu
dc.contributor.authorHong, Yaying
dc.contributor.authorLi, Shunbo
dc.contributor.authorWen, Weijia
dc.date.accessioned2016-02-28T08:00:01Z
dc.date.available2016-02-28T08:00:01Z
dc.date.issued2013
dc.identifier.citationZhang D, Wu J, Zhou B, Hong Y, Li S, et al. (2013) Efficient photocatalytic activity with carbon-doped SiO2 nanoparticles. Nanoscale 5: 6167. Available: http://dx.doi.org/10.1039/c3nr01314f.
dc.identifier.issn2040-3364
dc.identifier.issn2040-3372
dc.identifier.pmid23727825
dc.identifier.doi10.1039/c3nr01314f
dc.identifier.urihttp://hdl.handle.net/10754/600251
dc.description.abstractPhotocatalysis provides a 'green' approach to completely eliminate various kinds of contaminants that are fatal for current environmental and energy issues. Semiconductors are one of the most frequently used photocatalysts as they can absorb light over a wide spectral range. However, it is also well known that naked SiO2 is not an efficient photocatalyst due to its relatively large band gap, which could only absorb shortwave ultraviolet light. In this report, nanoscale particles of carbon-doped silicon dioxide (C-doped SiO2) for use in photocatalysis were successfully prepared by a facile one-pot thermal process using tetraethylorthosilicate (TEOS) as the source of both silicon and carbon. These particles were subsequently characterized by thermogravimetric analysis, X-ray diffraction, standard and high resolution transmission electron microscopy and X-ray photoelectron spectroscopy. The C-doped SiO2 displayed outstanding photocatalytic properties, as evidenced by its catalysis of Rhodamine B degradation under near-UV irradiation. We propose that carbon doping of the SiO2 lattice creates new energy states between the bottom of the conduction band and the top of the valence band, which narrows the band gap of the material. As a result, the C-doped SiO2 nanoparticles exhibit excellent photocatalytic activities in a neutral environment. The novel synthesis reported herein for this material is both energy efficient and environmentally friendly and as such shows promise as a technique for low-cost, readily scalable industrial production. © 2013 The Royal Society of Chemistry.
dc.description.sponsorshipThis work is supported by Hong Kong GRC grants 604710 and 605411.
dc.publisherRoyal Society of Chemistry (RSC)
dc.titleEfficient photocatalytic activity with carbon-doped SiO2 nanoparticles
dc.typeArticle
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)
dc.identifier.journalNanoscale
dc.contributor.institutionNano Science and Technology Program, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
dc.contributor.institutionDepartment of Chemical Engineering, Huaihai Institute of Technology, No.59 Cangwu Road, Lianyungang 222005, China
kaust.personZhang, Dongen
kaust.personWu, Jinbo
kaust.personHong, Yaying
kaust.personLi, Shunbo
kaust.personWen, Weijia
kaust.grant.fundedcenterKAUST-HKUST Micro/Nanofluidic Joint Laboratory


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