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以TiO2为载体制备了TiO2-Cu[HgI4]纳米复合材料，利用HRTEM、XRD、DSC、UV-Vis等方法对该材料的结构及其热致变色性能进行了研究。研究表明，TiO2-Cu[HgI4]纳米复合材料具有较好的热致变色性能，随着nTiO2/nCu[HgI4]摩尔比值的增大，其可见光吸收性能增强，相变温度也相应升高。“,”TiO2-Cu[HgI4] nanocomposite was synthesized by using TiO2 as carrier. HRTEM, XRD, DSC and UV-Vis were employed to characterize the structure and investigate the thermochromic performance of the nanocomposite. Results indicate that TiO2-Cu[HgI4] nanocomposite has good thermochromic performance. The visible light absorption is strengthened with the increase of nTiO2/nCu[HgI4] mole ratio, and the phase transition temperature rises accordingly.