Formation of uniform size anatase nanocrystals from bis(ammonium lactato)titanium dihydroxide by thermohydrolysis

Möckel, H. J.; Giersig, Michael; Willig, F.

doi:10.1039/a905373e

Cited by 102 publications

(95 citation statements)

References 15 publications

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“…[12,13,16] It has also been demonstrated that the titanium precursor TALH adsorbed within multilayer films could form TiO 2 nanoparticles upon refluxing. Hence, the as-assembled samples were subsequently refluxed to prepare TiO 2 and TiO 2 -based composite nanomaterials.…”

Section: Resultsmentioning

confidence: 99%

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

Guo

Liang

et al. 2005

Adv Funct Materials

107

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A simple and versatile technique has been developed to prepare TiO2 and TiO2‐based composite (TiO2–CdS and TiO2–Au) nanotube arrays. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy‐dispersive X‐ray (EDX) analysis, X‐ray diffraction (XRD), thermogravimetric analysis (TGA), UV‐vis spectroscopy, and photoluminescence (PL) spectroscopy are used to characterize their morphology, structure, composition, and properties. The TiO2–CdS nanotubes contained many TiO2 and CdS quantum dots and exhibited a novel PL band in the blue‐wavelength range. The reported strategy will be useful for fabricating nanoparticle–nanoparticle composite nanostructure arrays, which are suitable for applications in catalysis, chemical sensors, nanoelectrodes, and nanodevices.

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Section: Resultsmentioning

confidence: 99%

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

Guo

Liang

et al. 2005

Adv Funct Materials

107

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“…40 Among these four polymorphs of TiO 2 , TiO 2 (anatase type) and TiO 2 (rutile type) are easy to synthesize in their pure form, and a variety of solution methods have been applied for their preparation, which include either solgel methods 1,41 based upon hydrolysis of titanium tetraalkoxides, e.g., tetraisopropoxides Ti(OCHMe 2 ) 4 in alcohol solutions in the presence of small amounts of water 4245 or hydrothermal methods 46,47 using either titanium tetrachloride (TiCl 4 ) 48 or titanium tetraisopropoxide 49 in aqueous solutions. An exceptional approach for the synthesis of TiO 2 (anatase type) was reported by Möckel et al, 50 who succeeded in forming uniform size TiO 2 (anatase type) nanocrystals by hydrothermal decomposition of bis(ammoniumhydroxolactato) titanium, (NH 4 ) 2 [Ti(la) 2 (OH) 2 ], in neutral aqueous solutions at temperatures above 100°C. It is also worthy to refer to some relevant publications reporting on selective synthesis of TiO 2 (anatase type) and TiO 2 (rutile type), their phase stability and transformation between them.…”

Section: Award Accountsmentioning

confidence: 99%

Application of Water-Soluble Titanium Complexes as Precursors for Synthesis of Titanium-Containing Oxides via Aqueous Solution Processes

Kakihana¹,

Kobayashi²,

Tomita

et al. 2010

Bulletin of the Chemical Society of Japan

123

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The growing significance of nanocrystalline inorganic functional materials in the fields of catalysis, electronics, and energy conversion together with the increasing demand of the society for safer, softer, and "greener" technologies has drawn considerable attention of the researchers toward water-based solution processes for synthesis of such materials. In this respect complex oxides, containing d 0 -transition metals, such as Ti, Nb, Ta, or Si represent an outstanding challenge for materials chemists due to the extremely narrow range or almost complete absence of suitable precursor compounds compatible with aqueous systems. In the recent 10 years, a remarkable progress has been achieved in the development of new water-soluble complexes of titanium and considerable experience was accumulated in the application of these compounds for synthesis of nanocrystalline titanium-containing materials. The essential knowledge of coordination chemistry of such water-soluble titanium complexes is reviewed in this work, which succeeded to identify the key structural features responsible for stability of the compounds against hydrolysis and to provide guidelines for synthesis of these complexes. Finally, an extensive overview of highly selective aqueous solution based synthesis of TiO 2 polymorphs as well as complex oxide materials with the help of the novel water-soluble titanium complexes is provided.

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“…[7] Bis(ammonium lactato)titanium dihydroxide (TALH), an inorganica nd water-soluble precursor that is stable in neutrala queouss olution, hasb een found to be an interesting and convenients tarting material for fabrication of TiO 2 nanoparticles and films. [8] deKrafft et al reported the synthesis of aFe 2 O 3 /TiO 2 nanocomposite. [9] By using asacrificial template, MIL-101(Fe) crystal particles were coated with an amorphouss hell of titaniab yT ALH precursor condensation but with major loss of crystallinity.T he key structural feature in MOFs is their highly porous framework with varied topology, which is crucial for their functional properties.…”

Section: Introductionmentioning

confidence: 98%

Turning Redundant Ligands into Treasure: A New Strategy for Constructing MIL‐53(Al)@Nanoscale TiO₂ Layers

Shen

et al. 2015

Chemistry A European J

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A strategy for in situ fabrication of nanoscale-thin layers of anatase TiO2 coated on the metal-organic framework (MOF) material, MIL-53(Al), is developed. The preparation conditions for crystallized TiO2 are normally incompatible with the thermal and chemical stability of MOFs. Based on our strategy, we found that the redundant organic ligands (1,4-benzenedicarboxylic acid, H2 BDC) within the pores of the as-synthesized MOF play a key function in the protection and support of the framework during hydrothermal loading of the TiO2 precursor, as well as in preventing the infiltration of the precursor into the pores. After annealing, a nanoscale-thin layer of highly crystalline anatase TiO2 , with a thickness of 6-10 nm, was successfully attached to the external surface of the MIL-53(Al) crystals, while the porous framework remains intact. The core-shell structure of the MOF@TiO2 nanocomposite endows the resulting materials with additional optical response and enhanced moisture and chemical stability.

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Formation of uniform size anatase nanocrystals from bis(ammonium lactato)titanium dihydroxide by thermohydrolysis

Cited by 102 publications

References 15 publications

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

Application of Water-Soluble Titanium Complexes as Precursors for Synthesis of Titanium-Containing Oxides via Aqueous Solution Processes

Turning Redundant Ligands into Treasure: A New Strategy for Constructing MIL‐53(Al)@Nanoscale TiO₂ Layers

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Formation of uniform size anatase nanocrystals from bis(ammonium lactato)titanium dihydroxide by thermohydrolysis

Cited by 102 publications

References 15 publications

TiO2‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

TiO2‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

Application of Water-Soluble Titanium Complexes as Precursors for Synthesis of Titanium-Containing Oxides via Aqueous Solution Processes

Turning Redundant Ligands into Treasure: A New Strategy for Constructing MIL‐53(Al)@Nanoscale TiO2 Layers

Contact Info

Product

Resources

About

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

TiO₂‐Based Composite Nanotube Arrays Prepared via Layer‐by‐Layer Assembly

Turning Redundant Ligands into Treasure: A New Strategy for Constructing MIL‐53(Al)@Nanoscale TiO₂ Layers