Twins in polyhedral 26-facet Cu7S4 cages: Synthesis, characterization and their enhancing photochemical activities
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发布时间：2025-04-30
发布时间：2025-04-30
论文名称：Twins in polyhedral 26-facet Cu7S4 cages: Synthesis, characterization and their enhancing photochemical activities
发表刊物：Dalton Trans.
摘要：Unusual polyhedral 26-facet Cu7S4 cages wholly exposed with amazingly unique nanotwinned structures as building blocks were successfully synthesized via a facile ethanol-assisted sacrificial Cu2O templates approach. Furthermore, a solvent-controlled abrication of polyhedral copper sulfides (Cu7S4 and CuS) with different stoichiometries and microstructures can be artificially achieved, which is determined by the intrinsic difference of the surface states of Cu2O templates. Structural and morphological evolutions were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM) and field-emission scanning electron microscopy (FESEM). Stoichiometric-dependent characteristics were demonstrated in the UV–vis absorption investigations. The as-prepared Cu7S4 microcages exhibit higher photocatalytic activity for enhancing degradation of methylene blue, which might be attributed to their special nanotwinned building blocks. This study is of great importance in “bottom-up” assembly of unusual ordering hollow copper sulfides superstructures, but also offers a good opportunity to understand the fundamental significance of nanotwinned structures for their potential applications.
合写作者：Sun SD; Deng DC; Kong CC; Song XP; Yang ZM*
卷号：2012, 41, 3214–3222
页面范围：3214–3222
是否译文：否
发表时间：2011-12-21