Morphology Control of Stolzite Microcrystals with High Hierarchy in Solution

Liu, Biao; Yu, Shu‐Hong; Fu, Pingqing; Zhang, Qiao; Zhang, Fen; Jiang, Ke

doi:10.1002/anie.200460090

Cited by 168 publications

(122 citation statements)

References 43 publications

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“…Considerable effort has led to the design of effective methods to synthesize 1D nanostructures such as nanowires, [6] nanobelts, [7] and nanotubes [8] due to the unique optical, magnetic, and catalytic properties of these structures. In contrast to 1D nanostructures, complex 3D architectures, such as branched Cu 2 O crystals, [9] hierarchical structures from the self-assembly of polyhedral mesophase crystals, [10] mesocrystals as new kinds of superstructures with complex forms, [11] and tetragonal PbWO 4 microcrystals with special hierarchical structures, [12] may offer opportunities to explore their novel properties and, thus, have attracted broad attention in materials science. However, the successful synthesis of complex architectures is difficult and remains a great challenge.…”

Section: Introductionmentioning

confidence: 99%

Shape‐Controlled Synthesis of 3D and 1D Structures of CdS in a Binary Solution with L‐Cysteine's Assistance

Xiong

Wang

Zou

et al. 2007

Chemistry A European J

137

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A facile L-cysteine-assisted route was designed for the selectively controlled synthesis of 1D and novel, interesting 3D CdS spherical nanostructures constructed from CdS nanorods (or nanopolypods) in a binary solution. By controlling reaction conditions such as the molar ratio between Cd(OAc)2 and L-cysteine and the volume ratio of the mixed solvents, the synthesis of various 3D architectural structures and 1D wirelike structures in large quantities can be controlled. This is the first reported case of the direct growth of novel 3D self-assemblies of CdS nanorods (or nanopolypods). The morphology, structure, and phase composition of the as-prepared CdS products were examined by using various techniques (X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), selected-area electron diffraction (SAED), high-resolution TEM, and Raman spectroscopy). On the basis of the results from TEM studies and our analysis, we speculate that in the present synthesis the L-cysteine dominates nucleation growth and the ethylenediamine (en)-dominated, oriented-assembly process. Interestingly, the products obtained show a gradient evolution in color from light-yellow to dark-yellow, which implies that their intrinsic optical properties change, possibly due to variations in their special morphologies and structures. This facile solution-phase L-cysteine-assisted method could be extended for the controlled preparation of other metal chalcogenides nanostructures with complex morphologies.

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Section: Introductionmentioning

confidence: 99%

Shape‐Controlled Synthesis of 3D and 1D Structures of CdS in a Binary Solution with L‐Cysteine's Assistance

Xiong

Wang

Zou

et al. 2007

Chemistry A European J

137

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show abstract

“…24,25 In addition, the optical properties of metal tungstates with different morphologies have been studied. 26 44 pulsed laser deposition, 45 and vapordeposition method. 46 We have obtained CaWO 4 crystals by means of microwave assisted hydrothermal method, allowing to faster reaction rates and shorter reaction times, thereby leading to an overall reduction in energy consumption.…”

Section: Introductionmentioning

confidence: 99%

Presence of excited electronic state in CaWO4 crystals provoked by a tetrahedral distortion: An experimental and theoretical investigation

Gracia

Longo

Cavalcante

et al. 2011

Journal of Applied Physics

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By combining experimental techniques such as x-ray diffraction, Fourier transform Raman, ultraviolet-visible, x-ray absorption near edge structure, extended x-ray absorption fine structure spectroscopy, and theoretical models, a general approach to understand the relationship among photoluminescence (PL) emissions and excited electronic states in CaWO 4 crystals is presented. First-principles calculations of model systems point out that the presence of stable electronic excited states (singlet) allow us to propose one specific way in which PL behavior can be achieved. In light of this result, we reexamine prior experiments on PL emissions of CaWO 4 .

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“…The presence of organic additives or surfactants [3][4][5][6], self-assembled organic superstructures and templates with complex functionalization patterns [7] can direct the growth of inorganic crystals with controlled morphologies and architectures [8]. Searching for new strategies toward one dimensional nanosized building blocks has attracted intensive interest because of their distinctive geometries, novel physical and chemical properties, and potential applications in nanodevices [9,10].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of flake‐like crystals by a hydrothermal process

Yang

Shen²,

Xie

2009

Cryst. Res. Technol.

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In this study, a hydrothermal method for formation of flake-like nanocrystals is described. This approach with appropriate surfactant CTAB can be successfully synthesized of compound, noble metals, and semiconductors simple substance, such as lead sulfate, gold and selenium. The products were characterized by SEM image and XRD pattern. The results show that TSA acting as a new class of inorganic scaffolds for the synthesis of materials in crystal engineering and composites design for different applications is versatile reactor and may be extended to the creation of other highly novel inorganic structures with applications in catalysis, novel optical materials and other fields.

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Morphology Control of Stolzite Microcrystals with High Hierarchy in Solution

Cited by 168 publications

References 43 publications

Shape‐Controlled Synthesis of 3D and 1D Structures of CdS in a Binary Solution with L‐Cysteine's Assistance

Shape‐Controlled Synthesis of 3D and 1D Structures of CdS in a Binary Solution with L‐Cysteine's Assistance

Presence of excited electronic state in CaWO4 crystals provoked by a tetrahedral distortion: An experimental and theoretical investigation

Synthesis of flake‐like crystals by a hydrothermal process

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