Synthesis, structure and photocatalytic properties of Fe(III)-doped TiO2 prepared from TiCl3

Ambrus, Zoltán; Balázs, Nándor; Alapi, Tünde; Wittmann, Gyula; Sipos, Pál; Dombi, András; Mogyorósi, Károly

doi:10.1016/j.apcatb.2007.11.041

Cited by 254 publications

(151 citation statements)

References 48 publications

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“…[66][67][68][69][70][71][72][73] Much less is known about the ternary Ti-Fe-O diagram when dealing with nanoparticle synthesis in water. [74][75][76] In the 2-6 pH range, both metal ions first form an amorphous or very poorly organized hydroxide precipitate. Consequently, we used a subsequent microwave assisted hydrothermal treatment to enable the oxide crystallization.…”

Section: Nanoparticle Characterizationsmentioning

confidence: 99%

How Should Iron and Titanium be Combined in Oxides to Improve Photoelectrochemical Properties?

et al. 2016

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We discuss here for the first time how to combine iron and titanium metal ions to achieve a high photo-electrochemical activity for TiO 2 -based photo-anodes in water splitting devices. To do so, a wide range of photoelectrode materials with tailored Ti/Fe ratio and element vicinity were synthesized by using the versatility of aqueous sol-gel chemistry in combination with a microwave-assisted crystallization process. At low ferric concentrations, single phase TiO 2 anatase doped with various Fe amounts were prepared. Strikingly, at higher ferric concentrations, propose that the nature of the heterojunction impacts charge carrier recombination. The results presented herein not only answer whether iron and titanium should be combined in the same structure or into heterostructured systems, but also on the importance of the arrangement of ions in the structure to improve the performances of the photoanode.

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Section: Nanoparticle Characterizationsmentioning

confidence: 99%

How Should Iron and Titanium be Combined in Oxides to Improve Photoelectrochemical Properties?

et al. 2016

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“…These percentages indicated that we could incorporate approximately 40 % of the iron in the synthesis. Other researchers have reported that samples with higher iron content (i.e., higher than 1.2%) have a loss of iron of approximately 20-25% related to the amount added in the synthesis process (37). Adan et al, (2007) (32) reported a loss of iron of about 25%-50%.…”

Section: X-ray Fluorescence Xrfmentioning

confidence: 99%

“…This behavior states that there are small shifts in the bands with increments in the calcination temperature, i.e., the E g (ν1) band increased slightly from 637. 37 …”

Section: +mentioning

confidence: 99%

Characterization and Photocatalytic Evaluation (UV-Visible) of Fe-doped TiO2 Systems Calcined at Different Temperatures

Vargas

Marín

Restrepo

2015

Journal of Advanced Oxidation Technologies

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Abstract:There is growing interest in obtaining compounds with photocatalytic activity in the solar spectrum, and this has led to intense research on the topic. In our laboratory, Fe-doped TiO 2 was synthesized using the sol-gel method combined with the solvothermal technique at 200°C and calcined at temperatures between 350 o C and 620 o C. The samples were characterized by X-ray diffraction, Micro-Raman spectroscopy, Brunauer-Emmett-Teller specific surface area, diffuse reflectance spectroscopy, X-ray fluorescence and photocatalytic activity. All materials crystallized in the anatase phase. Additionally the 0.05% Fe-doped TiO 2 calcined at 620°C showed the presence of the rutile phase while 0.1% Fe-doped TiO 2 calcined at 620°C showed the presence of the brookite phase. Photoactivity was observed in the visible spectrum for 0.05% and 0.1% Fe-doped TiO 2 , calcined at 620 o C. Visible activity was attributed to the presence of rutile and an absorption shift to the visible spectrum. Because of the temperature increment, the crystal size grew and the surface area decreased.

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“…A csepegtetés során sárgás színű szuszpenzió keletkezett, melyet lecentrifugáltunk, majd az üledéket 80°C-on szárítottuk be [71]. A kapott halvány sárga port kalcináló csőkemencében 600 °C-on hőkezeltük 10 percig, a Pap Zsolt munkatársam által kidolgozott RHSE (rapid heating, short exposurevagyis gyorsfelfűtés, rövid hőkezelés) módszert alkalmazva [50].…”

Section: Vassal Módosított Titán-dioxid Előállításaunclassified

“…A módszer lényege, hogy a kívánt hőmérsékletet rövid idő alatt, nagy felfűtési sebességgel érjük el, és a mintát mindösszesen 10 percig tartjuk az adott hőmérsékleten, és ezután rögtön kivesszük a kvarccsónakot a kemencéből. A kapott mintákat kihűlés és porítás után centrifugálásos mosással valamint UV megvilágítással tisztítottuk, végül 80 °C-on beszárítottuk és porítottuk [71].…”

Section: Vassal Módosított Titán-dioxid Előállításaunclassified

Környezeti szennyezők ártalmatlanítása UV- és látható fényre aktív titán-dioxid alapú fotokatalizátorokkal

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Synthesis, structure and photocatalytic properties of Fe(III)-doped TiO2 prepared from TiCl3

Cited by 254 publications

References 48 publications

How Should Iron and Titanium be Combined in Oxides to Improve Photoelectrochemical Properties?

How Should Iron and Titanium be Combined in Oxides to Improve Photoelectrochemical Properties?

Characterization and Photocatalytic Evaluation (UV-Visible) of Fe-doped TiO2 Systems Calcined at Different Temperatures

Környezeti szennyezők ártalmatlanítása UV- és látható fényre aktív titán-dioxid alapú fotokatalizátorokkal

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