Photosynthesis of H<sub>2</sub> and its storage on the Bandgap Engineered Mesoporous (Ni<SUP>2+</SUP>/Ni<SUP>3+</SUP>)O @ TiO<sub>2</sub> heterostructure

Simple item page
dc.contributor.authorRaju, Kumar
dc.contributor.authorRajendran, Saravanan
dc.contributor.authorHoang, Tuan K. A.
dc.contributor.authorDurgalakshmi, D.
dc.contributor.authorQin, Jiaqian
dc.contributor.authorDiaz-Droguett, D. E.
dc.contributor.authorGracia, F.
dc.contributor.authorGracia-Pinilla, M. A.
dc.date.accessioned2025-01-23T19:51:22Z
dc.date.available2025-01-23T19:51:22Z
dc.date.issued2020
dc.description.abstractA noble-metal free and surface defect-induced mesoporous mixed valent NiO decorated TiO2 heterostructure with tuned bandgap has been successfully prepared. Its outstanding visible-light driven hydrogen evolution and its excellent H-2 storage ability have been examined and confirmed. The formation of oxygen vacancies by surface defect creates the Ni3+ and Ti3+ on the interface of the heterostructure induce the efficient H-2 evolution, benchmarked by 1200% enhancement in catalytic performance. The underlying chemistries include the near-unity occupancy of e(g) orbital (t(2g)(6) e(g)(1)) of Ni3+ which speeds up the electron transfer and significantly promote the excellent electron-hole separation efficiency, establishes the outstanding overall charge-transfer efficiency and long-term photocatalytic activity in the visible light spectrum. Multiple Ti3+ adsorption centers in the structure attract multiple intact H-2 molecules per each center via a sigma - pi bonding motif - namely the Kubas interaction - which leads to 480% higher H-2 adsorption capability against the performance of the pristine mesoporous TiO2. Not only the significant results, the study also provide an air-stable synthetic method on the basis of low-cost and abundant materials, which are strongly favoured for scaling up production.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.jpowsour.2020.228305
dc.identifier.eissn1873-2755
dc.identifier.issn0378-7753
dc.identifier.urihttps://doi.org/10.1016/j.jpowsour.2020.228305
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/100577
dc.identifier.wosidWOS:000540457100011
dc.language.isoen
dc.revistaJournal of power sources
dc.rightsacceso restringido
dc.subjectHydrogen
dc.subjectAdsorption
dc.subjectPhotocatalyst
dc.subjectNanomaterial
dc.subjectSurface defect
dc.titlePhotosynthesis of H<sub>2</sub> and its storage on the Bandgap Engineered Mesoporous (Ni<SUP>2+</SUP>/Ni<SUP>3+</SUP>)O @ TiO<sub>2</sub> heterostructure
dc.typeartículo
dc.volumen466
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
Files
Collections
Artículos de revistas