纳米氧化亚铜的形貌控制合成及光催化降解有机染料的研究进展

Research progress in controllable synthesis of Cu_2O with different morphologies and their property for photodegrading organic dye

回顾了近年来不同形貌Cu2O纳米晶体、Cu2O纳米笼和纳米骨架的合成及最新研究进展,着重介绍了一维Cu2O纳米材料的合成过程,比较了不同形貌Cu2O的制备方法并指出了合成的关键步骤。比较了不同形貌Cu2O晶体的光催化性能,总结指出具有更多高活性{110}晶面或高指数晶面的Cu2O晶体有显著的光催化性能。最后总结了不同形貌Cu2O的控制合成方法,指出Cu2O的可控合成机理研究、非传统多晶面的Cu2O及具有完整晶面Cu2O纳米笼的合成是未来的研究重点;提出Cu2O在光催化领域的主要问题是稳定性较差且光催化效率不高。

This review provides a brief summary of research progress in Cu2O with different morphologies, including nanocrystals and nanocages and nanoframes. The synthesis and research development, including one-dimension Cu2O structures,were emphatically introduced. The fabrication methods of Cu2O were compared and the key steps of synthesis were pointed out. Furthermore,the properties of photogradation of different crystals were discussed,it indicated that Cu2O crystals with more photoactive {110} planes or polyhedral crystals with more high-index facet have higher photocatalytic performance for dye gradation. Finally,ways to prepare different morphology Cu2O were summarized and the mechanism of morphologically controlled synthesis and the synthesis of Cu2O with more crystal faces and nanocage with integrated crystal face are very important fundamental research. The main problems of Cu2O crystals for the photogradation application are the poor stability and low efficiency.