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dc.contributor.authorCastillo, Nikola C.-
dc.contributor.authorHeel, Andre-
dc.contributor.authorGraule, Thomas-
dc.contributor.authorPulgarin, Cesar-
dc.date.accessioned2018-08-20T14:30:32Z-
dc.date.available2018-08-20T14:30:32Z-
dc.date.issued2010-
dc.identifier.issn0926-3373de_CH
dc.identifier.urihttps://digitalcollection.zhaw.ch/handle/11475/9274-
dc.description.abstractThe synthesis of bismuth vanadate (BiVO4) nanoparticles has drawn considerable attention to their application as a visible-light-driven photocatalyst. Several techniques are addressing the enlargement of surface area, but some of them can cause impurities and lower the performance of the material. In this work, flame spray synthesis technique was used as a simple, easy upscalable technique to produce BiVO4 powders. The effect of process parameters on particle properties such as size, morphology and crystallinity were investigated by several techniques: BET, XRD, DSC, TEM, DRS and ζ potential. Spherical BiVO4 nanoparticles with either amorphous or monoclinic phase-pure crystal structure, along with specific surface areas (SSA) between 10 and 75 m2 g−1 were obtained by a setup including an in situ crystallization step at T≥ 270°C on the powder collection site, sometimes followed by a mild or severe annealing post-treatment. Traditional synthesis routes usually require such annealing post-treatment which implies considerable loss of SSA. The photocatalytic activity of the as-prepared powders was investigated by the degradation of the cationic dye methylene blue (MB). N-demethylation of the dye was clearly identified as one of the degradation pathways, while ring cleavage was only observed with crystalline samples. Crystallinity and SSA were crucial parameters for the photocatalytic activity of different samples of BiVO4 depending on the pH of the solutions. The control of these two parameters during the synthesis of BiVO4 qualifies this method for a potential large scale production.de_CH
dc.language.isoende_CH
dc.publisherElsevierde_CH
dc.relation.ispartofApplied Catalysis B: Environmentalde_CH
dc.rightsLicence according to publishing contractde_CH
dc.subjectNanocrystalline materialsde_CH
dc.subjectBismuth vanadatede_CH
dc.subjectVisible light photocatalysisde_CH
dc.subjectMethylene bluede_CH
dc.subjectN-demethylationde_CH
dc.subject.ddc540: Chemiede_CH
dc.titleFlame-assisted synthesis of nanoscale, amorphous and crystalline, spherical BiVO4 with visible-light photocatalytic activityde_CH
dc.typeBeitrag in wissenschaftlicher Zeitschriftde_CH
dcterms.typeTextde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Materials and Process Engineering (IMPE)de_CH
dc.identifier.doi10.1016/j.apcatb.2010.01.012de_CH
zhaw.funding.euNode_CH
zhaw.issue3-4de_CH
zhaw.originated.zhawNode_CH
zhaw.pages.end347de_CH
zhaw.pages.start335de_CH
zhaw.publication.statuspublishedVersionde_CH
zhaw.volume95de_CH
zhaw.publication.reviewPeer review (Publikation)de_CH
zhaw.webfeedProzesstechnikde_CH
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Castillo, N. C., Heel, A., Graule, T., & Pulgarin, C. (2010). Flame-assisted synthesis of nanoscale, amorphous and crystalline, spherical BiVO4 with visible-light photocatalytic activity. Applied Catalysis B: Environmental, 95(3-4), 335–347. https://doi.org/10.1016/j.apcatb.2010.01.012
Castillo, N.C. et al. (2010) ‘Flame-assisted synthesis of nanoscale, amorphous and crystalline, spherical BiVO4 with visible-light photocatalytic activity’, Applied Catalysis B: Environmental, 95(3-4), pp. 335–347. Available at: https://doi.org/10.1016/j.apcatb.2010.01.012.
N. C. Castillo, A. Heel, T. Graule, and C. Pulgarin, “Flame-assisted synthesis of nanoscale, amorphous and crystalline, spherical BiVO4 with visible-light photocatalytic activity,” Applied Catalysis B: Environmental, vol. 95, no. 3-4, pp. 335–347, 2010, doi: 10.1016/j.apcatb.2010.01.012.
CASTILLO, Nikola C., Andre HEEL, Thomas GRAULE und Cesar PULGARIN, 2010. Flame-assisted synthesis of nanoscale, amorphous and crystalline, spherical BiVO4 with visible-light photocatalytic activity. Applied Catalysis B: Environmental. 2010. Bd. 95, Nr. 3-4, S. 335–347. DOI 10.1016/j.apcatb.2010.01.012
Castillo, Nikola C., Andre Heel, Thomas Graule, and Cesar Pulgarin. 2010. “Flame-Assisted Synthesis of Nanoscale, Amorphous and Crystalline, Spherical BiVO4 with Visible-Light Photocatalytic Activity.” Applied Catalysis B: Environmental 95 (3-4): 335–47. https://doi.org/10.1016/j.apcatb.2010.01.012.
Castillo, Nikola C., et al. “Flame-Assisted Synthesis of Nanoscale, Amorphous and Crystalline, Spherical BiVO4 with Visible-Light Photocatalytic Activity.” Applied Catalysis B: Environmental, vol. 95, no. 3-4, 2010, pp. 335–47, https://doi.org/10.1016/j.apcatb.2010.01.012.


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