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1. Identificação
Tipo de ReferênciaArtigo em Evento (Conference Proceedings)
Sitemtc-m21b.sid.inpe.br
Código do Detentorisadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S
Identificador8JMKD3MGP3W34P/3Q8L8HL
Repositóriosid.inpe.br/mtc-m21b/2017/12.21.18.03
Última Atualização2018:01.02.15.06.26 (UTC) administrator
Repositório de Metadadossid.inpe.br/mtc-m21b/2017/12.21.18.03.37
Última Atualização dos Metadados2018:06.04.02.28.08 (UTC) administrator
Chave SecundáriaINPE--PRE/
Chave de CitaçãoCoutoOishSardFerr:2017:ElPeTh
TítuloElectrocatalytic performance of three dimensional electrode Cu/reduced oxide graphene/ carbon fiber for nitrate reduction
Ano2017
Data de Acesso28 mar. 2024
Tipo SecundárioPRE CI
Número de Arquivos1
Tamanho1001 KiB
2. Contextualização
Autor1 Couto, Andrea Boldarini
2 Oishi, Silvia Sizuka
3 Sardinha, Andre Ferreira
4 Ferreiraa, Neidenêi Gomes
Grupo1
2 LABAS-COCTE-INPE-MCTIC-GOV-BR
3 LABAS-COCTE-INPE-MCTIC-GOV-BR
4 LABAS-COCTE-INPE-MCTIC-GOV-BR
Afiliação1
2 Instituto Nacional de Pesquisas Espaciais (INPE)
3 Instituto Nacional de Pesquisas Espaciais (INPE)
4 Instituto Nacional de Pesquisas Espaciais (INPE)
Endereço de e-Mail do Autor1
2 silvia.oishi@inpe.br
3 andre.sardinha@inpe.br
4 neidenei.ferreira@inpe.br
Nome do EventoECS Meeting, 232
Localização do EventoNational Harbor, MD
Data01-05 Oct.
Histórico (UTC)2017-12-21 18:04:40 :: simone -> administrator :: 2017
2017-12-21 19:10:48 :: administrator -> simone :: 2017
2018-01-02 15:06:26 :: simone -> administrator :: 2017
2018-06-04 02:28:08 :: administrator -> simone :: 2017
3. Conteúdo e estrutura
É a matriz ou uma cópia?é a matriz
Estágio do Conteúdoconcluido
Transferível1
Tipo do ConteúdoExternal Contribution
Tipo de Versãopublisher
ResumoNitrate ions are well-known water toxic inorganic pollutants and their high concentrations can cause a serious problem for both aquatic systems and human health. In this sense, it is of great importance to monitor nitrate ions in various kind of source [1]. Among several analytical technologies that been used for its detection, electrochemical technique offers a simple, rapid, selective, sensitive, inexpensive, safety method for this purpose, not to mention its considered green technology [2]. To improve the nitrate process performance and selectivity, novel electrode materials have been widely investigated. This work aims to develop a sensitive and reliable three dimensional electrode consisting of Cu particles/reduced oxide graphene (rGO)/carbon fiber (CF) for monitoring nitrate concentration. CF produced at heat treatment temperature of 1000 ºC was used in this study. The rGO electrodeposition on CF (1 cm2) was performed at a fixed potential of -1.25 V vs. Ag/AgCl/KCl(sat) for 15 min in a 20 mL of the graphene oxide (3mg mL-1) + 0.1 mol L-1 LiClO4 aqueous solution. The Cu electrodeposition on rGO/CF was carried out at a fixed potential of -0.7 V for 3, 6, 10, 20 min in a 10 mmol L-1 CuSO4 + 100 mmol L-1 H2SO4 aqueous solution. Cu/rGO/CF composites morphologies and structures were analyzed by field emission gun scanning electron microscopy (FEG-SEM), X-ray diffraction, and Raman spectroscopy. Nitrate electro-reduction was evaluated using cyclic voltammetry at 50 mV s-1 in 0.1 mol L-1 K2SO4 solution (pH = 3.0) with and without the presence of 10-2 mol L-1 KNO3. For rGO/CF binary composite, FEG-SEM images showed the characteristic aggregates with irregular and flakes-like shape with high particle density on CF substrate. The Cu deposits depicted small grain morphologies distributed throughout the rGO/CF surface. As expected, Cu deposit rate increased with increasing the deposition time. From X-ray diffraction analyses of the Cu particles, a mixture of phases containing cuprous oxide and metallic copper was identified. Under optimal experimental conditions, the Cu/rGO/CF electrode showed good catalytic activity for nitrate electro-reduction. This behavior can be associated to the presence of rGO and CF with high specific surface area in addition to Cu particle with high electron transfer capability. These results showed that Cu/rGO/CF composite has a great potential as new promising electrode for nitrate electroreduction application.
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4. Condições de acesso e uso
URL dos dadoshttp://urlib.net/ibi/8JMKD3MGP3W34P/3Q8L8HL
URL dos dados zipadoshttp://urlib.net/zip/8JMKD3MGP3W34P/3Q8L8HL
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Grupo de Usuáriossimone
Grupo de Leitoresadministrator
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Visibilidadeshown
Permissão de Leituraallow from all
Permissão de Atualizaçãonão transferida
5. Fontes relacionadas
Repositório Espelhosid.inpe.br/mtc-m21b/2013/09.26.14.25.22
Unidades Imediatamente Superiores8JMKD3MGPCW/3ESR3H2
Lista de Itens Citando 2
Acervo Hospedeirosid.inpe.br/mtc-m21b/2013/09.26.14.25.20
6. Notas
Campos Vaziosarchivingpolicy archivist booktitle callnumber copyholder copyright creatorhistory descriptionlevel dissemination doi e-mailaddress edition editor format isbn issn keywords label lineage mark nextedition notes numberofvolumes orcid organization pages parameterlist parentrepositories previousedition previouslowerunit progress project publisher publisheraddress resumeid rightsholder schedulinginformation secondarydate secondarymark serieseditor session shorttitle sponsor subject targetfile tertiarymark tertiarytype type url volume
7. Controle da descrição
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