Abstract
We report a thermolytic reduction of silver precursors in the presence of anatase TiO2 nanorods to form Ag-TiO2 hybrid nanocrystals (HNCs). Upon changing the reaction conditions, the size and number density of Ag on the HNCs could be adjusted. The size and number density of Ag on the HNCs were found to have an inverse relation. We assess the hydrogen evolution of TiO2 nanorods, P25 TiO2, and Ag-TiO2 HNCs in methanol/water under xenon lamp irradiation. The turnover frequency for hydrogen evolution on silica-supported Ag-TiO2 was 1.4 × 10-4 s-1, greater than that of the anatase TiO2 nanorods (9.8 × 10-6 s-1) or the coupled anatase/rutile TiO2 (P25 catalyst; 5.2 × 10-5 s-1).
| Original language | English (US) |
|---|---|
| Journal | ACS Applied Energy Materials |
| DOIs | |
| State | Accepted/In press - Jan 1 2019 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Chemical Engineering (miscellaneous)
- Energy Engineering and Power Technology
- Electrochemistry
- Materials Chemistry
- Electrical and Electronic Engineering
Cite this
}
Ag-TiO2 Hybrid Nanocrystal Photocatalyst : Hydrogen Evolution under UV Irradiation but Not under Visible-Light Irradiation. / Varapragasam, Shelton J.P.; Mia, Shahzahan; Wieting, Carly; Balasanthiran, Choumini; Hossan, Md Yeathad; Baride, Aravind; Rioux, Robert M.; Hoefelmeyer, James D.
In: ACS Applied Energy Materials, 01.01.2019.Research output: Contribution to journal › Article
TY - JOUR
T1 - Ag-TiO2 Hybrid Nanocrystal Photocatalyst
T2 - Hydrogen Evolution under UV Irradiation but Not under Visible-Light Irradiation
AU - Varapragasam, Shelton J.P.
AU - Mia, Shahzahan
AU - Wieting, Carly
AU - Balasanthiran, Choumini
AU - Hossan, Md Yeathad
AU - Baride, Aravind
AU - Rioux, Robert M.
AU - Hoefelmeyer, James D.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - We report a thermolytic reduction of silver precursors in the presence of anatase TiO2 nanorods to form Ag-TiO2 hybrid nanocrystals (HNCs). Upon changing the reaction conditions, the size and number density of Ag on the HNCs could be adjusted. The size and number density of Ag on the HNCs were found to have an inverse relation. We assess the hydrogen evolution of TiO2 nanorods, P25 TiO2, and Ag-TiO2 HNCs in methanol/water under xenon lamp irradiation. The turnover frequency for hydrogen evolution on silica-supported Ag-TiO2 was 1.4 × 10-4 s-1, greater than that of the anatase TiO2 nanorods (9.8 × 10-6 s-1) or the coupled anatase/rutile TiO2 (P25 catalyst; 5.2 × 10-5 s-1).
AB - We report a thermolytic reduction of silver precursors in the presence of anatase TiO2 nanorods to form Ag-TiO2 hybrid nanocrystals (HNCs). Upon changing the reaction conditions, the size and number density of Ag on the HNCs could be adjusted. The size and number density of Ag on the HNCs were found to have an inverse relation. We assess the hydrogen evolution of TiO2 nanorods, P25 TiO2, and Ag-TiO2 HNCs in methanol/water under xenon lamp irradiation. The turnover frequency for hydrogen evolution on silica-supported Ag-TiO2 was 1.4 × 10-4 s-1, greater than that of the anatase TiO2 nanorods (9.8 × 10-6 s-1) or the coupled anatase/rutile TiO2 (P25 catalyst; 5.2 × 10-5 s-1).
UR - http://www.scopus.com/inward/record.url?scp=85075034196&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85075034196&partnerID=8YFLogxK
U2 - 10.1021/acsaem.9b01730
DO - 10.1021/acsaem.9b01730
M3 - Article
AN - SCOPUS:85075034196
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
SN - 2574-0962
ER -