dc.contributor.author |
Mavuso, MA
|
|
dc.contributor.author |
Makgwane, Peter R
|
|
dc.contributor.author |
Ray, Suprakas S
|
|
dc.date.accessioned |
2020-07-13T11:27:53Z |
|
dc.date.available |
2020-07-13T11:27:53Z |
|
dc.date.issued |
2020-04 |
|
dc.identifier.citation |
Mavuso, M.A., Makgwane, P.R. and Ray, S.S. 2020. Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates. ACS Omega, v5(17), 9775-9788. |
en_US |
dc.identifier.issn |
2470-1343 |
|
dc.identifier.uri |
https://pubs.acs.org/doi/10.1021/acsomega.9b04396?goto=supporting-info&
|
|
dc.identifier.uri |
https://dx.doi.org/10.1021/acsomega.9b04396
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/11470
|
|
dc.description |
Copyright: 2020 American Chemical Society. This is an open access article published under a Creative Commons Attribution (CC-BY) License, which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
en_US |
dc.description.abstract |
Herein, we report the enhanced photocatalytic activity of heterostructured CeO2 nanocatalysts interfaced with Cu, Co, Ni, Mn, and Fe metal oxides. The CeO2 catalysts exhibited an enhanced red shift in the visible-light response compared to CeO2. This improved absorption range effectively suppressed electron (e-)/hole (+h) recombination by forming localized energy bands associated with defect oxygen vacancies (Vo) induced by the Mn+ ions incorporated in CeO2. Under visible-light irradiation, CeO2 catalysts are active for a-pinene oxidation to the aroma oxygenates, pinene oxide, verbenol, and verbenone. Both Fe2O3-CeO2 and NiO- CeO2 gave the highest pinene conversions of 71.3 and 53.1%, respectively, with corresponding pinene oxide selectivities of 57.3 and 58.2%. The enhanced photocatalytic performance of the heterostructured CeO2 catalysts compared to CeO2 is attributed to their enhanced visible-light absorption range and efficient suppression of e-/+h recombination. The Fe2O3- CeO2 catalyst was highly recyclable and did not show any significant loss of its photoactivity. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Chemical Society |
en_US |
dc.relation.ispartofseries |
Worklist;23560 |
|
dc.subject |
CeO2 |
en_US |
dc.subject |
Biomass-derived terpene compounds |
en_US |
dc.subject |
Photocatalysis |
en_US |
dc.title |
Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Mavuso, M., Makgwane, P. R., & Ray, S. S. (2020). Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates. http://hdl.handle.net/10204/11470 |
en_ZA |
dc.identifier.chicagocitation |
Mavuso, MA, Peter R Makgwane, and Suprakas S Ray "Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates." (2020) http://hdl.handle.net/10204/11470 |
en_ZA |
dc.identifier.vancouvercitation |
Mavuso M, Makgwane PR, Ray SS. Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates. 2020; http://hdl.handle.net/10204/11470. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mavuso, MA
AU - Makgwane, Peter R
AU - Ray, Suprakas S
AB - Herein, we report the enhanced photocatalytic activity of heterostructured CeO2 nanocatalysts interfaced with Cu, Co, Ni, Mn, and Fe metal oxides. The CeO2 catalysts exhibited an enhanced red shift in the visible-light response compared to CeO2. This improved absorption range effectively suppressed electron (e-)/hole (+h) recombination by forming localized energy bands associated with defect oxygen vacancies (Vo) induced by the Mn+ ions incorporated in CeO2. Under visible-light irradiation, CeO2 catalysts are active for a-pinene oxidation to the aroma oxygenates, pinene oxide, verbenol, and verbenone. Both Fe2O3-CeO2 and NiO- CeO2 gave the highest pinene conversions of 71.3 and 53.1%, respectively, with corresponding pinene oxide selectivities of 57.3 and 58.2%. The enhanced photocatalytic performance of the heterostructured CeO2 catalysts compared to CeO2 is attributed to their enhanced visible-light absorption range and efficient suppression of e-/+h recombination. The Fe2O3- CeO2 catalyst was highly recyclable and did not show any significant loss of its photoactivity.
DA - 2020-04
DB - ResearchSpace
DP - CSIR
KW - CeO2
KW - Biomass-derived terpene compounds
KW - Photocatalysis
LK - https://researchspace.csir.co.za
PY - 2020
SM - 2470-1343
T1 - Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates
TI - Heterostructured CeO2-M (M = Co, Cu, Mn, Fe, Ni) oxide nanocatalysts for the visible-light photooxidation of pinene to aroma oxygenates
UR - http://hdl.handle.net/10204/11470
ER -
|
en_ZA |