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MoS 2 microflowers are fabricated by a facile hydrothermal route with polyquaternary ammonium salt (Polyquaternium-11, PQA) as a soft template. The experimental results indicate that the MoS 2 microflowers are of hexagonal phases and have a hierarchical flower-like morphology, which are assembled by numerous few-layered nanosheets. A probable assembly process is proposed to illustrate the formation of the MoS 2 microflowers. Additionally, as an electrode material for supercapacitor, the resultant MoS 2 microflowers demonstrate a superior electrochemical property which could be attributed to their robust hierarchical architectures and few-layered feature. [ABSTRACT FROM AUTHOR]

Abstract: Novel flower-like CeF3 nanostructures with a mean diameter of 190nm were successfully synthesized via a rapid and facile microwave irradiation route using ethylenediaminetetraacetic acid disodium as the complexing reagent. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and photoluminescence (PL). XRD patterns showed that the CeF3 nanoflowers were hexagonal phase and had good crystallinity and purity. TEM and SEM images showed that the as-prepared CeF3 samples displayed 3D flower-like nanostructures and had uniform sizes and morphologies. The experimental results revealed that the as-prepared CeF3 nanoflowers might be assembled by nanodisks. The formation process of the CeF3 nanoflowers was preliminarily investigated. [Copyright &y& Elsevier]

Abstract: Flower-like MoS2 microspheres with high purity were successfully synthesized via a facile hydrothermal route by adding sodium silicate as an additive. The products were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM). XRD patterns showed that the MoS2 microspheres had good crystallinity with well-stacked layered structure. TEM and SEM images showed that the MoS2 microspheres had uniform sizes with mean diameter about 480 nm and were constructed with MoS2 sheets with thickness of several nanometers. It was found that the possible precursor H4SiMo12O40 obtained by sodium silicate reacting with sodium molybdate played a crucial role in the formation of the flower-like MoS2 microspheres in our experiment. A possible formation mechanism of MoS2 microspheres was preliminarily presented. [Copyright &y& Elsevier]

Flower-like MoS2 microspheres were successfully synthesized via a facile hydrothermal route followed by annealing treatment using biopolymer (sodium alginate, SA) as an additive. The experimental results indicated that the MoS2 products were of hexagonal phases and had a hierarchical flower-like morphology, which were constructed with MoS2 nanosheets. A probable SA-induced assembly process was presented to account for the formation of the flower-like microspheres. Additionally, as an electrode material for supercapacitor, this MoS2 microsphere delivered a high specific capacitance at a large current density with good cycle ability. [ABSTRACT FROM AUTHOR]