| 1. Identity statement | ||||
| Reference Type | Conference Paper (Conference Proceedings) | |||
| Site | mtc-m21b.sid.inpe.br | |||
| Holder Code | isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S | |||
| Identifier | 8JMKD3MGP3W34P/3Q8L8HL | |||
| Repository | sid.inpe.br/mtc-m21b/2017/12.21.18.03 | |||
| Last Update | 2018:01.02.15.06.26 (UTC) administrator | |||
| Metadata Repository | sid.inpe.br/mtc-m21b/2017/12.21.18.03.37 | |||
| Metadata Last Update | 2018:06.04.02.28.08 (UTC) administrator | |||
| Secondary Key | INPE--PRE/ | |||
| Citation Key | CoutoOishSardFerr:2017:ElPeTh | |||
| Title | Electrocatalytic performance of three dimensional electrode Cu/reduced oxide graphene/ carbon fiber for nitrate reduction  | |||
| Year | 2017 | |||
| Access Date | 2024, Apr. 24 | |||
| Secondary Type | PRE CI | |||
| Number of Files | 1 | |||
| Size | 1001 KiB | |||
| 2. Context | ||||
| Author | 1 Couto, Andrea Boldarini 2 Oishi, Silvia Sizuka 3 Sardinha, Andre Ferreira 4 Ferreiraa, Neidenêi Gomes | |||
| Group | 1 2 LABAS-COCTE-INPE-MCTIC-GOV-BR 3 LABAS-COCTE-INPE-MCTIC-GOV-BR 4 LABAS-COCTE-INPE-MCTIC-GOV-BR | |||
| Affiliation | 1 2 Instituto Nacional de Pesquisas Espaciais (INPE) 3 Instituto Nacional de Pesquisas Espaciais (INPE) 4 Instituto Nacional de Pesquisas Espaciais (INPE) | |||
| Author e-Mail Address | 1 2 silvia.oishi@inpe.br 3 andre.sardinha@inpe.br 4 neidenei.ferreira@inpe.br | |||
| Conference Name | ECS Meeting, 232 | |||
| Conference Location | National Harbor, MD | |||
| Date | 01-05 Oct. | |||
| History (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. Content and structure | ||||
| Is the master or a copy? | is the master | |||
| Content Stage | completed | |||
| Transferable | 1 | |||
| Content Type | External Contribution | |||
| Version Type | publisher | |||
| Abstract | Nitrate 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. | |||
| Area | FISMAT | |||
| Arrangement | urlib.net > BDMCI > Fonds > Produção anterior à 2021 > LABAS > Electrocatalytic performance of... | |||
| doc Directory Content | access | |||
| source Directory Content | there are no files | |||
| agreement Directory Content |
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| 4. Conditions of access and use | ||||
| data URL | http://urlib.net/ibi/8JMKD3MGP3W34P/3Q8L8HL | |||
| zipped data URL | http://urlib.net/zip/8JMKD3MGP3W34P/3Q8L8HL | |||
| Language | en | |||
| User Group | simone | |||
| Reader Group | administrator simone | |||
| Visibility | shown | |||
| Read Permission | allow from all | |||
| Update Permission | not transferred | |||
| 5. Allied materials | ||||
| Mirror Repository | sid.inpe.br/mtc-m21b/2013/09.26.14.25.22 | |||
| Next Higher Units | 8JMKD3MGPCW/3ESR3H2 | |||
| Host Collection | sid.inpe.br/mtc-m21b/2013/09.26.14.25.20 | |||
| 6. Notes | ||||
| Empty Fields | archivingpolicy 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. Description control | ||||
| e-Mail (login) | simone | |||
| update | ||||