Enhanced hydrogen adsorption properties of mesoporous nano-TiO2@SnO2

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dc.contributor.authorRajendran, Saravanan
dc.contributor.authorGnanasekaran, Lalitha
dc.contributor.authorHoang, Tuan K. A.
dc.contributor.authorDiaz-Droguett, D. E.
dc.contributor.authorGracia, F.
dc.contributor.authorGracia-Pinilla, M. A.
dc.date.accessioned2025-01-20T20:18:50Z
dc.date.available2025-01-20T20:18:50Z
dc.date.issued2023
dc.description.abstractToday, hydrogen as being one of the most advantageous energy supplies for various applications and specifically not with carbon emissions, alluring strategies are made possible for its production and storage. Since the metal oxides (MOs) semiconductors give rise to the development of new technologies related to renewable energy and environmental issues, this work is envisioned to study the hydrogen adsorption properties of TiO2@SnO2 catalyst synthesized via novel approach by integrating sol-gel and thermal decomposition methods. The synthesized TiO2 and its composite have been analyzed by sophisticated instruments to reveal the drastic enhancement of hydrogen adsorption. In this work, hydrogen measurements were accomplished by quartz crystal (QC) microbalance method. The Raman scattering experiment of the composite revealed the lower peak intensity compared with pure TiO2, which demonstrated the surface defects that created oxygen vacancies with reduced oxidation states of the metal centers. Meanwhile, the mesoporous nanostructure of TiO2@SnO2 could be confirmed via High resolution transmission electron (HR-TEM) microscopic analysis. Besides, the intermediate states of the composite were analyzed through Photoluminescence (PL) spectra which demonstrated the delay in recombining charges. The Barrett-Joyner- Halenda (BJH) method illustrated the larger pore size and pore volume with decreased surface area of the composite. The addition of SnO2 into TiO2 has reported 4 times greater the adsorption of pristine TiO2 particles, because of the capacity of SnO2 to hinder pores. Moreover, the titania oxidation states play a predominant role in the procurement of larger H2 adsorption. Also, the Ti4+ and Sn4+ reveal fragile Kubas type of adsorption that facilitated the hydrogen storage.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.fuel.2022.126686
dc.identifier.eissn1873-7153
dc.identifier.issn0016-2361
dc.identifier.urihttps://doi.org/10.1016/j.fuel.2022.126686
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/92486
dc.identifier.wosidWOS:000917719400001
dc.language.isoen
dc.revistaFuel
dc.rightsacceso restringido
dc.subjectMetal oxides
dc.subjectHydrogen adsorption
dc.subjectQC microbalance
dc.subjectMesoporous
dc.subjectKubas type
dc.subject.ods07 Affordable and Clean Energy
dc.subject.odspa07 Energía asequible y no contaminante
dc.titleEnhanced hydrogen adsorption properties of mesoporous nano-TiO2@SnO2
dc.typeartículo
dc.volumen334
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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