Template-directed synthesis of MS (M=Cd, Zn) hollow microsphere via hydrothermal method

Wang, Shiming; Qiong-sheng, Wang; Qing-li, Wan

doi:10.1016/j.jcrysgro.2008.01.035

Cited by 13 publications

(5 citation statements)

References 30 publications

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“…Secondly, since the elimination of the polysaccharide generally maintains the size and monodispersity of the beads in parallel with the apparition of a large porosity, highly structured materials are obtained, which may be used for example in cosmetics, 23 or in catalysis. 24 Inorganic beads such as boehmite, 23 silica, 16,[24][25][26] alumina, 27 zinc or cadmium sulfide, 28 cobalt, copper or nickel oxide, 29 or cobalt 30 have been thus produced. All these materials are characterised by a single inorganic phase and the synthesis of composite inorganic beads has not been yet described.…”

Section: Introductionmentioning

confidence: 99%

Highly porous and monodisperse magnetic silica beads prepared by a green templating method

et al. 2010

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49-3 FIELD Section Title:Industrial Inorganic Chemicals 60, 61, 77 Laboratoire de Physicochimie des Electrolytes, Colloides et Sciences Analytiques, (PECSA-UMR 7195 UPMC-CNRS-ESPCI) UPMC - 4, Paris, Fr. FIELD URL: written in EnglishWe describe the prepn. of magnetic silica nanocomposite millimetric beads using alginate as a green biopolymer template. The simple and soft method which is used here is particularly suitable since the alginate template allows a multiscale control of the structure of the material, both its morphol. characteristics at the millimetric scale and its porosity at the nanometric level. These nanocomposites are characterized by a high monodispersity, a perfect spherical shape, a very large and multiscale porosity with pore diams. ranging from 2 nm to more than 50 nm, a homogeneous dispersion of the magnetic nanoparticles in the silica matrix and a high magnetic susceptibility which increases linearly with the vol. fraction of the nanoparticles. These highly porous materials which can be used as magnetic adsorbents in water treatment, showed a good sorption capacity for methylene blue, chosen as a model dye. [on SciFinder(R)

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Section: Introductionmentioning

confidence: 99%

Highly porous and monodisperse magnetic silica beads prepared by a green templating method

et al. 2010

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“…In conclusion, the phase transformation of ZnS from zinc blende-to-wurtzite, in the presence of EN, has been demonstrated experimentally and by DFT calculations. There are many reports on the synthesis of ZnS with surface-active molecules like CTAB, TTAB, DTAB, SL, SDBS, Triton X-100 ( t -octyl-(OCH 2 CH 2 ) x OH, where x = 9 and 10), ammonium salt of 2-undecyl-1-dithioureido-ethyl-imidazoline (SUDEI), EN, EDTA, and the list goes on. − In most cases, the zinc blende structure or some complex intermediate phases of ZnS were developed. Very few reports are on the direct synthesis of the wurtzite phase.…”

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confidence: 99%

Ethylenediamine-Mediated Wurtzite Phase Formation in ZnS

Acharya

Maheshwari

Tatikondewar

et al. 2013

Crystal Growth & Design

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Computational detailsElectronic structure calculations based on density functional theory (DFT) [1] are carried out using accurate plane augmented wave (PAW) method [2] as implemented in Vienna Ab initio Simulations Package (VASP) [3]. The exchange-correlation energy functional as given by Perdew, Burke and Ernzerhof (PBE) [4] is used, since it is known to provide descent estimates for electronic properties. The valence electronic configurations used for Zn and S are 4s 2 3d 10

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“…Li et al reported the ZnS holely microspheres were fabricated in solution containing ethylenediamine and CS 2 [8]. Cheng et al also indicated that a chitosan template was employed to synthesize ZnS hollow microspheres at 150 °C for 12 h [9]. Wang et al have largescale synthesized well-dispersed ZnS microspheres using poly (vinlyl pyrrolidone) (Mr =10000) as the surfactant at 150 °C for 15 h by a hydrothermal method [10].…”

Section: Introductionmentioning

confidence: 99%

Self‐template hydrothermal synthesis ZnS microspheres

Zhang

Pan

Zhang

et al. 2011

Cryst. Res. Technol.

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Zinc sulfide (ZnS) microspheres were synthesized by a self-template hydrothermal route using thiourea as sulphur source. The formation of these hollow spheres was mainly attributed to the oriented aggregation of ZnS nanocystals around the gas-liquid interface between gas (H 2 S, NH 3 , or CO 2 ) and water followed by an Ostwald ripening process. The gas bubbles of H 2 S, NH 3 , or CO 2 produced during the reaction might play a soft-template to form ZnS hollow microspheres. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), selected area electron diffraction (SAED), electron diffraction (ED), and photoluminescence (PL). The crystal structure of prepared ZnS microspheres is hexagonal phase polycrystalline. The average microspheres diameter is 1.5 -6 µm.

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Template-directed synthesis of MS (M=Cd, Zn) hollow microsphere via hydrothermal method

Cited by 13 publications

References 30 publications

Highly porous and monodisperse magnetic silica beads prepared by a green templating method

Highly porous and monodisperse magnetic silica beads prepared by a green templating method

Ethylenediamine-Mediated Wurtzite Phase Formation in ZnS

Self‐template hydrothermal synthesis ZnS microspheres

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