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.
N1 - Funding Information:
This work was supported by the National Science Foundation (CHE-0840507, CHE-0722632, CHE-1460872, CHE-1337707, EPS-0903804). C.B. and R.M.R acknowledge funding from the Department of Energy, Office of Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division, Catalysis Sciences Program under grant number DE-SC0016192.
Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019
Y1 - 2019
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).
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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 -