2000
DOI: 10.1039/b004384m
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Characterisation and activity of sol–gel-prepared TiO2 photocatalysts modified with Ca, Sr or Ba ion additives

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Cited by 100 publications
(52 citation statements)
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References 35 publications
(27 reference statements)
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“…Properties in#uencing the photocatalytic activity of TiO particles have been suggested to include the surface area, crystallinity, crystallite size and crystal structure (1,5). For TiO , there are three polymorphs, anatase, rutile and brookite.…”
Section: Introductionmentioning
confidence: 99%
“…Properties in#uencing the photocatalytic activity of TiO particles have been suggested to include the surface area, crystallinity, crystallite size and crystal structure (1,5). For TiO , there are three polymorphs, anatase, rutile and brookite.…”
Section: Introductionmentioning
confidence: 99%
“…[1,2] However, due to the band gap energy of about 3.2 eV (for crystalline anatase), the photocatalytic capability of TiO 2 , namely of anatase, only exists under ultraviolet (UV) light (wavelength λ < 400 nm), thus restricting its utility to very limited applications. The second typical drawback of TiO 2 is its low rate of electron transfer to oxygen with a high rate of recombination between excited electron-hole pairs, resulting in a low quantum yield rate and, consequently, in a limited photooxidation rate.…”
Section: Introductionmentioning
confidence: 99%
“…Функ-циональные свойства диоксида титана можно контроли-ровать путем модифицирования его различными добав-ками. В ряде работ для этой цели диоксид титана ле-гировали ионами щелочно-земельных металлов: (Ca 2+ , Sr 2+ и Ва 2+ ) [4]; переходных металлов: Fe 3+ [5], Co 2+ [6], Cr 3+ , Ni 2+ , Cu 2+ , Nb 5+ [7], а также редкоземельных эле-ментов: La 3+ , Ce 3+ , Sm 3+ [8,9]. Катионы металлов могут либо замещать титан, либо внедряться в междоузлия, но механизм легирования диоксида титана не всегда ясен.…”
Section: Introductionunclassified