Abstract
The conduction band edge (CBE) of WO3 quantum dots (QDs) was determined experimentally and engineered by size control to around one nanometer. Photocatalytic reactions of proton and molecular oxygen were tuned by changing the CBE of WO3-QDs.
Highlights
The conduction band edge (CBE) of WO3 quantum dots (QDs) was determined experimentally and engineered by size control to around one nanometer
Photocatalytic reactions of proton and molecular oxygen were tuned by changing the CBE of WO3-QDs
We observed the remarkable expansion of the bandgap of WO3-QDs using the pores of supermicroporous silicas (SMPSs) as templates.[13]
Summary
The conduction band edge (CBE) of WO3 quantum dots (QDs) was determined experimentally and engineered by size control to around one nanometer. We observed remarkably enhanced photoreduction of proton and molecular oxygen by the upshift of the CBE of WO3-QDs. The band engineering using the quantum size effect is found to be useful for tuning the efficiency of specific photocatalytic reactions.
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