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Hefei, China

Anhui Jianzhu University is a public university based in Hefei, Anhui province in China. Wikipedia.

To prepare microcapsules composed of chitosan (CS), a templating method is developed using poly(styrene sulfonate) (PSS)-doped porous calcium carbonate (CaCO3) templates as sacrificial templates. First, CS is absorbed onto PSS-doped porous CaCO3 templates, and then the absorbed CS is covalently cross-linked with each other by using glutaraldehyde. Porous CaCO3 templates are dissolved with disodium ethylenediaminetetraacetate dihydrate and the resultant CS capsules ranged from 2 to 5 μm in diameter. Nitrogen adsorption-desorption analysis are applied to characterize the porous CaCO3 templates, the BET surface area and total pore volume are 220 m2/g and 0.36 cm3/g, respectively. Field-emission scanning electron microscopy and transmission electron microscopy were used to characterize the CS capsules morphology. Confocal laser scanning microscopy images reveal that the capsules have been labeled with green fluorescein isothiocyanate. The gradual deformation of capsule in response to bulk osmotic pressure created by CS solutions has also been discussed. © 2012 Springer-Verlag. Source

Zhou J.,Anhui University of Architecture
Advances in Information Sciences and Service Sciences | Year: 2012

In this paper, we investigate the multiple attribute decision making (MADM) problems for appraisal model of venture capital investing project based on high-tech outcome transformation with uncertain linguistic information. We utilize the uncertain linguistic weighted geometric mean (ULWGM) operator to aggregate the uncertain linguistic information corresponding to each alternative and get the overall value of the alternatives, then rank the alternatives and select the most desirable one(s) by using the formula of the degree of possibility for the comparison between two uncertain linguistic variables. Finally an illustrative example for appraisal model of venture capital investing project based on high-tech outcome transformation with uncertain linguistic information has been given to show the developed approach and to demonstrate its feasibility and practicality. Source

Zhou X.,Hefei University of Technology | Shi T.,Hefei University of Technology | Zhou H.,Anhui University of Architecture
Applied Surface Science | Year: 2012

Hydrothermal method was utilized to prepare reduced graphene oxide (RGO) and fabricate ZnO-RGO hybrid (ZnO-RGO) with zinc nitrate hexahydrate and graphene oxide (GO) as raw materials under pH value of 11 adjusted by ammonia water. During the process of reduction of GO, hydrothermal condition with ammonia provided thermal and chemical factors to synthesize RGO. The retained functional groups on RGO planes played an important role in anchoring ZnO to RGO, which was characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning and transmission electron microscopy and photoluminescence spectra. The various mass ratios of zinc nitrate hexahydrate to GO used to prepare ZnO-RGO impacted significantly on the morphology of ZnO nanostructures such as nanoparticles and nanorods. And, the RGO sheets wrapped ZnO nanoparticles and nanorods very tightly. After the emission of photo electrons from ZnO, RGO in ZnO-RGO can effectively transfer the photo electrons to exhibit a high performance and reproducibility in photocatalytic degradation toward methylene blue (MB) absorbed on the surface of RGO through π-π conjugation. © 2012 Elsevier B.V. Source

Zhang Y.C.,Yangzhou University | Li J.,Yangzhou University | Xu H.Y.,Anhui University of Architecture
Applied Catalysis B: Environmental | Year: 2012

SnS 2/TiO 2 nanocomposites with adjustable TiO 2 contents were synthesized directly via the solvothermal reactions of SnCl 4·5H 2O, thioacetamide and different amounts of tetrabutyl titanate in the mixed solvents of ethanol and acetic acid at 180°C for 12h. The structures, compositions, Brunauer-Emmett-Teller (BET) specific surface areas and optical properties of the as-synthesized products were characterized by X-ray diffraction, energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, high resolution transmission electron microscopy, N 2 adsorption and UV-vis diffuse reflectance spectra, and their photocatalytic properties were tested for the reduction of aqueous Cr(VI) under visible light (λ>420nm) irradiation. Furthermore, contrast photocatalytic experiments were also conducted for different doses of the as-synthesized SnS 2/TiO 2 nanocomposite, SnS 2 and physical mixture of SnS 2 and TiO 2. It was found that the as-synthesized SnS 2/TiO 2 nanocomposite with a suitable TiO 2 content (e.g., 44.5mass% TiO 2) not only exhibited extraordinary superior photocatalytic activity to SnS 2, TiO 2 and physical mixture of SnS 2 and TiO 2 (44.5mass%) at different catalyst doses, but also had good photocatalytic stability. Moreover, Cr(VI) can be reduced to Cr(III) by SnS 2/TiO 2-mediated photocatalysis. The tight heterojunction structure of the as-synthesized SnS 2/TiO 2 nanocomposite, which can facilitate interfacial electron transfer and reduce the separation and self-agglomeration of two components, was considered to play an important role in achieving its greatly improved photocatalytic performance. © 2012 Elsevier B.V. Source

Wang G.,Anhui University of Architecture
Zeitschrift fur Angewandte Mathematik und Physik | Year: 2013

The Riemann problem for the nonlinear chromatography system is considered. Existence and admissibility of δ-shock type solution in both variables are established for this system. By the interactions of δ-shock wave with elementary waves, the generalized Riemann problem for this system is presented, the global solutions are constructed, and the large time-asymptotic behavior of the solutions are analyzed. Moreover, by studying the limits of the solutions as perturbed parameter e{open} tends to zero, one can observe that the Riemann solutions are stable for such perturbations of the initial data. © 2013 The Author(s). Source

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