Effective reduced graphene oxide sheets/hierarchical flower-like NiO composites for methanol sensing under high humidity
| dc.contributor.author | Zito, Cecilia A. [UNESP] | |
| dc.contributor.author | Perfecto, Tarcísio M. [UNESP] | |
| dc.contributor.author | Fonseca, Cristiane S. [UNESP] | |
| dc.contributor.author | Volanti, Diogo P. [UNESP] | |
| dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
| dc.date.accessioned | 2018-12-11T16:53:48Z | |
| dc.date.available | 2018-12-11T16:53:48Z | |
| dc.date.issued | 2018-01-01 | |
| dc.description.abstract | Recent advances in NiO-based gas sensors have been reported, but high working temperatures and dry conditions are usually required. Herein, we report the volatile organic compound (VOC) sensing performance of flower-like (FL) NiO hierarchical structures modified with reduced graphene oxide (RGO) sheets under high humidity. RGO/FL-NiO composites were synthesized by a simple and template-free microwave-assisted hydrothermal method and subsequent calcination at 250 °C. The VOC-sensing properties were investigated for several VOCs, such as acetone, ethanol, methanol, m-xylene, and toluene, at 90% relative humidity. The RGO/FL-NiO composites exhibited a decrease in the optimal operating temperature and enhanced methanol responses compared to pure FL-NiO. In addition, the 5% RGO/FL-NiO composite exhibited the highest response of 61.51% to 100 ppm of methanol at 180 °C, which was 1.4-9.9 times superior to responses to other VOCs, indicating the sensor's great selectivity. The improved methanol sensing properties could be attributed to the NiO/RGO heterointerface. | en |
| dc.description.affiliation | Laboratory of Materials for Sustainability (LabMatSus) Ibilce São Paulo State University (Unesp), R. Cristóvão Colombo 2265 | |
| dc.description.affiliationUnesp | Laboratory of Materials for Sustainability (LabMatSus) Ibilce São Paulo State University (Unesp), R. Cristóvão Colombo 2265 | |
| dc.description.sponsorship | Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) | |
| dc.description.sponsorship | Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) | |
| dc.description.sponsorshipId | FAPESP: 2013/23886-4 | |
| dc.description.sponsorshipId | FAPESP: 2016/04371-1 | |
| dc.description.sponsorshipId | FAPESP: 2016/25267-8 | |
| dc.description.sponsorshipId | FAPESP: 2017/01267-1 | |
| dc.description.sponsorshipId | CNPq: 444926/2014-3 | |
| dc.format.extent | 8638-8645 | |
| dc.identifier | http://dx.doi.org/10.1039/c8nj01061g | |
| dc.identifier.citation | New Journal of Chemistry, v. 42, n. 11, p. 8638-8645, 2018. | |
| dc.identifier.doi | 10.1039/c8nj01061g | |
| dc.identifier.issn | 1369-9261 | |
| dc.identifier.issn | 1144-0546 | |
| dc.identifier.lattes | 2354739980406725 | |
| dc.identifier.orcid | 0000-0001-9315-9392 | |
| dc.identifier.scopus | 2-s2.0-85047984994 | |
| dc.identifier.uri | http://hdl.handle.net/11449/171078 | |
| dc.language.iso | eng | |
| dc.relation.ispartof | New Journal of Chemistry | |
| dc.relation.ispartofsjr | 0,864 | |
| dc.relation.ispartofsjr | 0,864 | |
| dc.rights.accessRights | Acesso restrito | |
| dc.source | Scopus | |
| dc.title | Effective reduced graphene oxide sheets/hierarchical flower-like NiO composites for methanol sensing under high humidity | en |
| dc.type | Artigo | |
| unesp.author.lattes | 2354739980406725[4] | |
| unesp.author.orcid | 0000-0001-9315-9392[4] |