The synergy of multiple engineering strategies is an important method for constructing highly efficient photocatalytic materials. In this work, a novel three-dimensional ordered hollow spheres (3DOHs) array TiO2 was prepared by a simple colloidal template method. The crystal structure, morphology, composition, and surface physicochemical properties of the composites were characterized by various analytical methods. The results showed that the synergy between ZnO QDs and ZrO2 was used to construct a homojunction between anatase and rutile and the heterojunction between TiO2 and ZrO2, which promoted the formation of a double-junction structure in the composite. The characterization results illustrate the existence of homojunction and heterojunction in detail, and the results of photocatalytic experiments further confirm that the 3DOHs array 0.5 ZnO QDs@ZrO2–TiO2 with homojunction and heterojunction exhibits the best photodegradation and hydrogen evolution properties. The hydrogen evolution amount is 1530 times of P25, which reaches 2573 μmol g−1 in 8 h. In summary, this work provides some new insights into the construction of highly efficient photocatalytic materials and demonstrates the generality of constructing a stable three-dimensional ordered hollow sphere array structure.

多种工程策略的协同作用是构建高效光催化材料的重要方法。在这项工作中，通过简单的胶体模板方法制备了新型的三维有序空心球（3DOHs）阵列TiO2。通过各种分析方法对复合材料的晶体结构，形态，组成和表面物理化学性质进行了表征。结果表明，ZnO QDs和ZrO2之间的协同作用被用来构造锐钛矿和金红石之间的同质结以及TiO2和ZrO2之间的异质结，从而促进了复合材料中双结结构的形成。表征结果详细说明了同质结和异质结的存在，并且光催化实验的结果进一步证实了3DOHs阵列为0。具有同质结和异质结的5 ZnO QDs @ ZrO2-TiO2表现出最好的光降解和析氢性能。析氢量是P25的1530倍，在8小时内达到2573μmolg-1。总而言之，这项工作为高效光催化材料的构建提供了一些新见解，并证明了构建稳定的三维有序空心球阵列结构的普遍性。