Abstract
Hypocrellins, photoactive compounds isolated from fungus, were first employed as non-surfactant templates in the synthesis of ternary chalcogenide Cu3BiS3 and AgBiS2 crystallites via a facile ethanol-thermal process. It was also found that the used templates, poly (vinylpyrrolidone) (PVP), poly (ethylene glycol) (PEG), and hypocrellins had strong effect on the morphology of synthesized Cu3BiS3 and AgBiS2 and their catalytic polymerization products of an alkylsilane, C18H37SiH3 with water. In particular, the orthorhombic phase of wittichenite Cu3BiS3 with multi-armed microrods morphology and the cubic Schapbachite and hexagonal phase Matildite AgBiS2 with flower-like morphology were obtained when hypocrellins were used as templates at 180 °C for 20 h. Although, the used templates seem to have little effect on the crystalline grain size, compared with traditional PVP and PEG templates, hypocrellins have exhibited better directing actions. Furthermore, the polymerization products over Cu3BiS3 and AgBiS2 templated by hypocrellins showed good replica of the morphologies before polymerization while the polymerization products over Cu3BiS3 and AgBiS2 templated by PVP and/or PEG exhibited significant morphology change.
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Acknowledgement
The authors thank the Natural Science Foundation of China (Project 20863009, NSFC-YN U1033603), Yunnan Province (Project 20008CD065), Specialized Research Fund for the Doctoral Program of Higher Education (200806730005) and Program for Innovative Research Team (in Science and Technology) in Universities of Yunnan Province (IRTSTYN) for financial support.
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Yan, J., Yu, J., Zhang, W. et al. Synthesis of Cu3BiS3 and AgBiS2 crystallites with controlled morphology using hypocrellin template and their catalytic role in the polymerization of alkylsilane. J Mater Sci 47, 4159–4166 (2012). https://doi.org/10.1007/s10853-012-6270-0
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DOI: https://doi.org/10.1007/s10853-012-6270-0