Study on ESR and inter-related properties of vacuum-dehydrated nanotubed titanic acid

Zhang, Shunli; Li, Wei; Jin, Zhensheng; Yang, Jianjun; Zhang, Jingwei; Du, Zuliang; Zhang, Zhijun

doi:10.1016/j.jssc.2003.11.027

Cited by 130 publications

(87 citation statements)

References 15 publications

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“…According to Zhang et al [5,6,30,31] [33]. According to the authors the interlayer distance measured by ED was about 0.8 nm, which was lower than the d 020 (0.93 nm) in lepidocrocite-type titanates.…”

Section: Physico-chemical Properties Of Titanate Nanotubesmentioning

confidence: 88%

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Physico-chemical properties and possible photocatalytic applications of titanate nanotubes synthesized via hydrothermal method

Mozia¹,

Borowiak‐Palen²,

Przepiórski³

et al. 2010

Journal of Physics and Chemistry of Solids

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, Physico-chemical properties and possible photocatalytic applications of titanate nanotubes synthesized via hydrothermal method, Journal of Physics and Chemistry of Solids, doi:10.1016Solids, doi:10. /j.jpcs.2009 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting galley proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. of TNTs synthesized at 140°C was about 2.5 times higher than that generated with use of TiO 2 P25. To the best of our knowledge this is a first report on the photocatalytic generation of hydrocarbons using TNTs in the current state of the art.

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Section: Physico-chemical Properties Of Titanate Nanotubesmentioning

confidence: 88%

“…2) representing the d spacing of the (200) Fig. 1) [31]. Zhang et al [6] reported that the intensity and position of this peak depends on the amount of inter-and intralayered -OH groups.…”

Section: Physico-chemical Properties Of Titanate Nanotubesmentioning

confidence: 99%

Physico-chemical properties and possible photocatalytic applications of titanate nanotubes synthesized via hydrothermal method

Mozia¹,

Borowiak‐Palen²,

Przepiórski³

et al. 2010

Journal of Physics and Chemistry of Solids

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“…Then the residual dispersion was rinsed in turn with deionized water, acid solution, and deionized water, then dried at 60-70°C for 48 h under vacuum, and finally annealed at 100, 200, 300, 400, and 500°C for 2 h in air. The preparation process was the same as that of our previous works 26,27 expect for the drying and heating conditions. Examination of the samples' morphology was performed using a transmission electron microscope (TEM JEM-2010).…”

Section: Methodsmentioning

confidence: 99%

“…Recently we found that the H 2 Ti 2 O 4 (OH) 2 nanotubes show special optical properties in the visible region 26 and ESR response. 27 On further investigation, it was found that titanic acid nanotubes had strong and stable absorption and photoluminescence phenomenon in the visible region at room temperature in air. In this paper we present the results from this study.…”

Section: Introductionmentioning

confidence: 99%

Strong Visible Absorption and Photoluminescence of Titanic Acid Nanotubes by Hydrothermal Method

et al. 2008

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Titanic acid nanotubes (with a chemical formula H 2 Ti 2 O 4 (OH) 2 , abbreviated as TANTs) were synthesized by the hydrothermal method using commercial TiO 2 nanoparticle powder (P25, Degussa, Germany) including anatase and rutile phase as a starting material. Conversion from nanoparticles to nanotubes was achieved by treating the nanoparticle powder with 10 M NaOH aqueous solution. Absorption and photoluminescence (PL) data indicate that the nanotubes obtained under slow and suitable drying and heating conditions had very strong and stable visible absorption with three peaks at 515, 575, and 675 nm and photoluminescence at room temperature in air.

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“…2͑a͔͒ of these reduced TiO 2 nanobelts shows a single sharp symmetrical signal ͑g = 2.003͒ which can be attributed to singleelectron trapped on oxygen vacant sites, also known as singly occupied F + -centers. 12,13 Studies carried out on Codoped titanate nanotubes have shown the importance of this type of oxygen vacancies in mediating room temperature ferromagnetism, 2-5 with the widely accepted view of F-centers induced ferromagnetic coupling between Co 2+ via a donor impurity band exchange model. 18,19 The enlarged plot of the same graph ͑inset͒ also reveals the presence of active species trapped on Ti 3+ sites ͑g = 1.933͒ but the amount of these species is significantly smaller compared to that of the former.…”

mentioning

confidence: 99%

Interesting magnetic behavior from reduced titanium dioxide nanobelts

Chong

Kadowaki

Xia³

et al. 2008

Applied Physics Letters

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The magnetic behavior of titanium dioxide nanobelts has been investigated with and without Co doping. Room temperature ferromagnetism was observed when the Co-doped anatase TiO 2 nanobelts were prepared via vacuum annealing of 2.5 at. % Co-doped titanate nanobelts, while annealing them in air resulted in paramagnetic ordering. Interestingly, by vacuum annealing the undoped titanate nanobelts under the same conditions, superparamagnetic ordering was observed in the resulting anatase TiO 2 nanobelts. The electron paramagnetic resonance of this latter sample shows a strong symmetrical signal at g = 2.003 suggesting some sort of exchange interactions among the localized electrons' spin moments from single electron trapped in oxygen vacancies.

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Study on ESR and inter-related properties of vacuum-dehydrated nanotubed titanic acid

Cited by 130 publications

References 15 publications

Physico-chemical properties and possible photocatalytic applications of titanate nanotubes synthesized via hydrothermal method

Physico-chemical properties and possible photocatalytic applications of titanate nanotubes synthesized via hydrothermal method

Strong Visible Absorption and Photoluminescence of Titanic Acid Nanotubes by Hydrothermal Method

Interesting magnetic behavior from reduced titanium dioxide nanobelts

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