Sensors based on porous Pd-doped hematite (α-Fe2O 3) for LPG detection
| dc.contributor.affiliation | Pontificia Universidad Católica del Perú. Departamento de Ciencias | |
| dc.contributor.author | Picasso, G. | |
| dc.contributor.author | Sun-Kou, M.D.R. | |
| dc.contributor.author | Vargasmachuca, O. | |
| dc.contributor.author | Rojas, J. | |
| dc.contributor.author | Zavala, C. | |
| dc.contributor.author | López, A. | |
| dc.contributor.author | Irusta, S. | |
| dc.date.accessioned | 2026-03-13T16:58:33Z | |
| dc.date.issued | 2014 | |
| dc.description.abstract | In this work, sensors based on nanoparticles of α-Fe2O3 doped with different amounts of Pd ranging from 0.1 to 1.0 wt.% were prepared by coprecipitation for liquefied petroleum gas (LPG) detection. Solids were characterized by thermogravimetric and differential thermal analysis (TG–DTA), X-ray diffraction (XRD), adsorption–desorption of N2 (BET surface), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Sample tests of Pd-doped sensors showed much higher sensitivity than the undoped one revealing the promotion electronic effect of Pd2+ on the surface reaction. Among all samples, the sensor with 0.75 wt.% Pd presented the highest gas response at 300 °C in all gas tested concentrations, likely due to the highest BET surface, well-defined hematite crystalline structure and best surface contact over Pd surface via electronic mechanism. | |
| dc.description.sponsorship | Funding: The authors gratefully acknowledge the financial support for this work provided by CONCYTEC (Project 371-2012-CONCYTEC-OAJ), National University of Engineering-Faculty of Sciences (Project 2012), IGI-Institute of Research of National University of Engineering (Project IGI 2012) and DGI-PUCP, Research Center of Pontifical Catholic University of Peru (Project DGI 2010-0003). The authors appreciate the collaboration of Esther Ocola, Amanda Marie Bauer and Francisco Tarazona Vasquez for language assistance. | |
| dc.identifier.doi | https://doi.org/10.1016/j.micromeso.2013.11.014 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14657/205936 | |
| dc.language.iso | eng | |
| dc.publisher | Elsevier | |
| dc.relation.ispartof | urn:issn:1387-1811 | |
| dc.rights | info:eu-repo/semantics/closedAccess | |
| dc.source | Microporous and Mesoporous Materials; Vol. 185 (2014) | |
| dc.subject | Semiconductors | |
| dc.subject | Nanostructured semiconductors | |
| dc.subject.ocde | https://purl.org/pe-repo/ocde/ford#2.02.01 | |
| dc.title | Sensors based on porous Pd-doped hematite (α-Fe2O 3) for LPG detection | |
| dc.type | http://purl.org/coar/resource_type/c_6501 | |
| dc.type.other | Artículo | |
| dc.type.version | https://vocabularies.coar-repositories.org/version_types/c_970fb48d4fbd8a85/ |