Park, JongeeKapusuz, DeryaPark, JongeeOzturk, AbdullahMetallurgical and Materials Engineering2024-07-052024-07-052013410022-36971879-255310.1016/j.jpcs.2013.02.0222-s2.0-84876022504https://doi.org/10.1016/j.jpcs.2013.02.022https://hdl.handle.net/20.500.14411/389Kapusuz Yavuz, Derya/0000-0002-6935-9762; Park, Jongee/0000-0003-1415-6906; Ozturk, Abdullah/0000-0002-1525-1561; Ozturk, Abdullah/0000-0002-1525-1561Effects of boron (B) and/or zirconium (Zr) doping on photocatalytic activity of sol-gel derived titania (TiO2) powders were investigated. A conventional, non-hydrous sol-gel technique was applied to synthesize the B, Zr doped/co-doped TiO2 powders. Doping was made at molar ratios of Ti/B=1 and Ti/Zr=10. Sol-gel derived xero-gels were calcined at 500 degrees C for 3 h. The crystal chemistry and the morphology of the undoped and B, Zr doped/co-doped TiO2 nanoparticles were investigated using X-ray diffractometer and scanning electron microscope. Nano-scale (9-46 nm) TiO2 crystallites were obtained after calcination. Doping and co-doping decreased the crystallite size. Photocatalytic activity was measured through the degradation of methylene blue (MB) under 1 h UV-irradiation using a UV-vis spectrophotometer. Results revealed that B doping into anatase caused the formation of oxygen vacancies, whereas Zr addition caused Ti substitution. Both B and Zr ions had a profound effect on the particle morphology and photocatalytic activity of TiO2. The photocatalytic activity of B and Zr doped TiO2 particles increased from 27% to 77% and 57%, respectively. The best activity (88.5%) was achieved by co-doping. (C) 2013 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessOxidesSol-gel growthArticleQ274710261031WOS:000318329000022