Abstract
This Forum Article describes the photocatalytic oxidation of benzyl alcohol by visible-light-absorbing colloidal CdS quantum dots (QDs), with 99% selectivity for benzaldehyde or 91% selectivity for C-C coupled products (primarily hydrobenzoin). The selectivity is tuned through the number of low-valent Cd atoms photodeposited on the surfaces of the QDs in situ; this deposition is enhanced by addition of a Cd 2+ salt and suppressed by addition of an electron scavenger, anthroquinone-2-sulfonate, to the reaction mixture. In both cases, the external quantum efficiency (number of oxidative equivalents extracted from the QDs per incident photon) of the system is ∼1%.
| Original language | English |
|---|---|
| Pages (from-to) | 92-96 |
| Number of pages | 5 |
| Journal | ACS Applied Energy Materials |
| Volume | 2 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 28 2019 |
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Keywords
- Electron scavenger
- Phosphonate ligands
- Photodeposition
- Product selectivity
- Semiconductor nanocrystals
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
- Electrochemistry
- Materials Chemistry
- Electrical and Electronic Engineering
Cite this
Selective photocatalytic oxidation of benzyl alcohol to benzaldehyde or C-C coupled products by visible-light-absorbing quantum dots. / McClelland, Kevin P.; Weiss, Emily A.
In: ACS Applied Energy Materials, Vol. 2, No. 1, 28.01.2019, p. 92-96.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Selective photocatalytic oxidation of benzyl alcohol to benzaldehyde or C-C coupled products by visible-light-absorbing quantum dots
AU - McClelland, Kevin P.
AU - Weiss, Emily A
PY - 2019/1/28
Y1 - 2019/1/28
N2 - This Forum Article describes the photocatalytic oxidation of benzyl alcohol by visible-light-absorbing colloidal CdS quantum dots (QDs), with 99% selectivity for benzaldehyde or 91% selectivity for C-C coupled products (primarily hydrobenzoin). The selectivity is tuned through the number of low-valent Cd atoms photodeposited on the surfaces of the QDs in situ; this deposition is enhanced by addition of a Cd 2+ salt and suppressed by addition of an electron scavenger, anthroquinone-2-sulfonate, to the reaction mixture. In both cases, the external quantum efficiency (number of oxidative equivalents extracted from the QDs per incident photon) of the system is ∼1%.
AB - This Forum Article describes the photocatalytic oxidation of benzyl alcohol by visible-light-absorbing colloidal CdS quantum dots (QDs), with 99% selectivity for benzaldehyde or 91% selectivity for C-C coupled products (primarily hydrobenzoin). The selectivity is tuned through the number of low-valent Cd atoms photodeposited on the surfaces of the QDs in situ; this deposition is enhanced by addition of a Cd 2+ salt and suppressed by addition of an electron scavenger, anthroquinone-2-sulfonate, to the reaction mixture. In both cases, the external quantum efficiency (number of oxidative equivalents extracted from the QDs per incident photon) of the system is ∼1%.
KW - Electron scavenger
KW - Phosphonate ligands
KW - Photodeposition
KW - Product selectivity
KW - Semiconductor nanocrystals
UR - http://www.scopus.com/inward/record.url?scp=85060626998&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85060626998&partnerID=8YFLogxK
U2 - 10.1021/acsaem.8b01652
DO - 10.1021/acsaem.8b01652
M3 - Article
AN - SCOPUS:85060626998
VL - 2
SP - 92
EP - 96
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
SN - 2574-0962
IS - 1
ER -