Abstract
We report a new, environmentally and economically friendly photocatalytic process with unprecedentedly high activity for partial cyclohexane oxidation. Mesoporous silicas containing isolated tetrahedrally coordinated Ti and Fe oxide nanoparticles immobilized on the pore surface were synthesized by reacting SBA-15 with Ti(iv) acetylacetonate and Fe(iii) acetylacetonate successively. A variety of characterizations suggested that the grafted tetrahedrally coordinated Ti species were coupled with Fe oxide nanoparticles via Ti-O-Fe bonds. The SBA-15 photocatalysts showed a high yield (up to sub-mmol) and nearly 100% selectivity for the production of cyclohexanol and cyclohexanone with molecular O2 under solar light. The unprecedentedly high activity could be explained by the lengthened lifetime of the active Ti species by electron delocalization over Ti-O-Fe bonds and the visible light (λ > 420 nm)-induced activity endowed by Fe oxide nanoparticles coupled to the Ti species.
| Original language | English |
|---|---|
| Pages (from-to) | 15829-15835 |
| Number of pages | 7 |
| Journal | Journal of Materials Chemistry A |
| Volume | 4 |
| Issue number | 41 |
| DOIs | |
| Publication status | Published - 2016 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
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Fe oxide nanoparticles/Ti-modified mesoporous silica as a photo-catalyst for efficient and selective cyclohexane conversion with O2 and solar light. / Ide, Y.; Iwata, M.; Yagenji, Y.; Tsunoji, N.; Sohmiya, M.; Komaguchi, K.; Sano, T.; Sugahara, Yoshiyuki.
In: Journal of Materials Chemistry A, Vol. 4, No. 41, 2016, p. 15829-15835.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fe oxide nanoparticles/Ti-modified mesoporous silica as a photo-catalyst for efficient and selective cyclohexane conversion with O2 and solar light
AU - Ide, Y.
AU - Iwata, M.
AU - Yagenji, Y.
AU - Tsunoji, N.
AU - Sohmiya, M.
AU - Komaguchi, K.
AU - Sano, T.
AU - Sugahara, Yoshiyuki
PY - 2016
Y1 - 2016
N2 - We report a new, environmentally and economically friendly photocatalytic process with unprecedentedly high activity for partial cyclohexane oxidation. Mesoporous silicas containing isolated tetrahedrally coordinated Ti and Fe oxide nanoparticles immobilized on the pore surface were synthesized by reacting SBA-15 with Ti(iv) acetylacetonate and Fe(iii) acetylacetonate successively. A variety of characterizations suggested that the grafted tetrahedrally coordinated Ti species were coupled with Fe oxide nanoparticles via Ti-O-Fe bonds. The SBA-15 photocatalysts showed a high yield (up to sub-mmol) and nearly 100% selectivity for the production of cyclohexanol and cyclohexanone with molecular O2 under solar light. The unprecedentedly high activity could be explained by the lengthened lifetime of the active Ti species by electron delocalization over Ti-O-Fe bonds and the visible light (λ > 420 nm)-induced activity endowed by Fe oxide nanoparticles coupled to the Ti species.
AB - We report a new, environmentally and economically friendly photocatalytic process with unprecedentedly high activity for partial cyclohexane oxidation. Mesoporous silicas containing isolated tetrahedrally coordinated Ti and Fe oxide nanoparticles immobilized on the pore surface were synthesized by reacting SBA-15 with Ti(iv) acetylacetonate and Fe(iii) acetylacetonate successively. A variety of characterizations suggested that the grafted tetrahedrally coordinated Ti species were coupled with Fe oxide nanoparticles via Ti-O-Fe bonds. The SBA-15 photocatalysts showed a high yield (up to sub-mmol) and nearly 100% selectivity for the production of cyclohexanol and cyclohexanone with molecular O2 under solar light. The unprecedentedly high activity could be explained by the lengthened lifetime of the active Ti species by electron delocalization over Ti-O-Fe bonds and the visible light (λ > 420 nm)-induced activity endowed by Fe oxide nanoparticles coupled to the Ti species.
UR - http://www.scopus.com/inward/record.url?scp=84992212942&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84992212942&partnerID=8YFLogxK
U2 - 10.1039/c6ta04222h
DO - 10.1039/c6ta04222h
M3 - Article
AN - SCOPUS:84992212942
VL - 4
SP - 15829
EP - 15835
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 41
ER -