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dc.contributor.authorOishi, Silvia Sizuka
dc.contributor.authorCouto, Andrea Boldarini
dc.contributor.authorBotelho, Edson Cocchieri [UNESP]
dc.contributor.authorFerreira, Neidenei Gomes
dc.identifier.citationEnvironmental Technology. Abingdon: Taylor & Francis Ltd, 8 p., 2019.
dc.description.abstractNitrate is a serious contaminant of ground and surface water, which cause high concern in the field of health and environmental protection. In this work, a ternary composite of silver/boron-doped ultrananocrystalline diamond/reticulated vitreous carbon (Ag/B-UNCD/RVC) was prepared and its electrocatalytic activity for nitrate reduction was examined. B-UNCD films were grown by hot filament chemical vapour deposition technique on RVC after a substrate seeding process improvement using 4 nm diamond powder. Compared to conventional 0.25 mu m diamond seeding, this new procedure allowed uniform RVC coverage avoiding its etching process during diamond growth, in addition to obtaining more reproductive electrodes. In order to improve the catalytic effect of B-UNCD/RVC electrodes for nitrate reduction, silver deposition was performed on B-UNCD surface after oxidation for 10, 20 and 30 min in 0.5 mol L-1 H2SO4 solution using a potential of 2 V vs. Ag/AgCl. The most oxidized diamond film (30 min of oxidation) presented the highest silver deposit and particle adhesion. Thus the electrochemical response to nitrate of B-UNCD/RVC oxidized for 30 min was compared to that of RVC and B-UNCD/RVC electrodes showing the important Ag influence in the catalytic process. [GRAPHICS] .en
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.publisherTaylor & Francis Ltd
dc.relation.ispartofEnvironmental Technology
dc.sourceWeb of Science
dc.subjectReticulated vitreous carbon
dc.subjectboron-doped ultrananocrystalline diamond
dc.titleSilver deposition optimization process on ultrananocrystalline diamond applied to nitrate reductionen
dcterms.rightsHolderTaylor & Francis Ltd
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationINPE, Av Astronautas 1758, BR-12227010 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationUniv Estadual Paulista, UNESP, Dept Mat & Tecnol, Guaratingueta, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, UNESP, Dept Mat & Tecnol, Guaratingueta, Brazil
dc.rights.accessRightsAcesso aberto
dc.description.sponsorshipIdCNPq: 302017/2015-1
dc.description.sponsorshipIdFAPESP: 2014/27164-6
dc.description.sponsorshipIdFAPESP: 2016/13393-9
dc.description.sponsorshipIdFAPESP: 2017/10118-0
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