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https://hdl.handle.net/11147/14018
Title: | Inverse effects of lanthanide co-doping on the photocatalytic hydrogen production and dye degradation activities of Cu doped sol-gel TiO2 | Authors: | Yurtsever, Hüsnü Arda Erzin, Kubilay Çiftçioğlu, Muhsin |
Keywords: | Co-doping Copper Lanthanide Oxidation/reduction Photocatalysis Titania |
Publisher: | Elsevier | Abstract: | Copper doped and lanthanide-copper co-doped titania powders were prepared by sol–gel technique and the effects of co-doping on the photocatalytic reduction and oxidation activities of titania were investigated in this work. Characterization studies indicated that a reduced structure was formed due to the presence of Ti3+ species in copper doped titania powder and a more stable structure was formed when lanthanides were used as co-dopants. Copper doped powder had a significantly higher activity in photocatalytic hydrogen production (1037 μmol/g/h) than the co-doped powders (∼400 μmol/g/h). The oxidation activities of co-doped powders however were determined to be about 2 times higher than that of the copper doped powder. The decrease in the reduction activity was attributed to the decrease in the number of Ti3+ sites, whereas the increase in oxidation activity was probably a result of the increase in the surface area and dye adsorption due to lanthanide co-doping. © 2023 Elsevier B.V. | URI: | https://doi.org/10.1016/j.mseb.2023.116882 https://hdl.handle.net/11147/14018 |
ISSN: | 0921-5107 |
Appears in Collections: | Chemical Engineering / Kimya Mühendisliği Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection |
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1-s2.0-S0921510723006244-main.pdf Until 2025-01-01 | 8.97 MB | Adobe PDF | View/Open Request a copy |
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