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ABSTRACT: Currently, environmental pollution caused by organic compounds leads to severe negative consequences in the human society. Therefore, the removal of these pollutants from aqueous media has become one of the most important issues in environmental science. In the present study, CdS QDs were successfully prepared under aqueous conditions using L-arginine as the stabilizing agent. Optical property determination results reveal that the CdS QDs exhibited strong absorption and photoluminescence in a visible wavelength region. Moreover, the CdS QDs could effectively degrade two organic dyes under visible light irradiation. This suggested that the CdS QDs prepared in this work might be used as the potential photocatalyst to effectively treat the organic pollutants under visible light irradiation. 漏 2010 Elsevier B.V. All rights reserved.
Materials Letters. 01/2011; 65(3):486-489.
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ABSTRACT: Cadmium sulfide flower-like 3D assemblies were successfully prepared through a facile additive-free solvothermal process. It was found that the ethanol played an important role in the formation of the CdS assemblies. Based on the time-dependent experiments, a possible mechanism was proposed. In addition, the CdS assemblies exhibit unique optical properties and potential photocatalytic activity.
CrystEngComm. 01/2011; 13(16):5045-5048.
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ABSTRACT: Copper sulfide amorphous nanoparticles and nanocrystals were prepared successfully by a special process. These CuS nanoparticles could specifically and significantly induce the apoptosis and inhibit the proliferation of human cancer cells rather than normal cells. Moreover, the biological activities of these nanoparticles are related to their polymorphs.
Chemical Communications 04/2010; 46(20):3493-5. · 6.17 Impact Factor
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ABSTRACT: The potential application of nano-/microcrystals-based materials depends not just on the size, compositions and surface chemistry of the crystals, but also on their special morphologies and arrangements. Therefore, developing straightforward and controllable methods for self-assembly of nanostructures in 1 dimension and higher dimensions has attracted considerable attention. In this paper, cadmium sulfide 3 dimensional assemblies of nano-/microcrystals with controllable morphologies and arrangements were prepared through an efficient additive-free solvothermal process. The morphologies and arrangements of the 3 dimensional assemblies can be adjusted and controlled conveniently through the adjustment of the preparation conditions, such as the composition of the solvent, the ratio of reactants, the cadmium sources, and the pH values of the experiments. It presents a facile, efficient, and controllable method to prepare 3 dimensional architectures of nano-/micro-crystals with controlled morphologies and arrangements. 漏 2010 Bentham Science Publishers Ltd.
Current Nanoscience. 01/2010; 6(5):539-544.
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ABSTRACT: Protein-conjugated PbS nanocrystals with the average sizes of 15, 25, and 35 nm have been synthesized by adjusting the concentration of the bovine serum albumin (BSA) solution at room temperature. The obtained BSA-conjugated PbS nanoparticles have been characterized by powder X-ray diffraction, transmission electron microscopy, selected-area electron diffraction, high-resolution transmission electron microscopy, thermal analyses and photoluminescence. The quantum-confined effect of the BSA-conjugated PbS nanoparticles has been confirmed by the UV-vis spectra. The results indicated that the BSA not only induced the nucleation, but inhibited the further growth of PbS nanocrystals. The effect of Pb<sup>2+</sup> on BSA and the change of BSA conformation were studied through Fourier transform infrared spectroscopy and circular dichroism spectroscopy. The possible mechanism of BSA-conjugated PbS nanoparticles growth was also discussed. 漏 2009 Elsevier B.V. All rights reserved.
Materials Chemistry and Physics. 01/2010; 119(1-2):112-117.
