To improve the performance of ZnO in photocatalytic processes and gas sensing, ZnO was modified by coating the surface with a zeolitic-imidazolate framework-8 (ZIF-8). Partially dissolved Zn²⁺ ions from ZnO interacted with 2-methylimidazole (MeIM) to achieve a ZIF-8 coating on the ZnO surface as a ZnO@ZIF8 heterostructure. The ZnO@ZIF8 was further used as a photocatalyst for methylene blue degradation and the performance was compared with that of pure ZnO and pure ZIF-8. The result showed that the photocatalytic efficiency of ZnO@ZIF8 is better than that of pure ZnO. Furthermore, ZnO@ZIF8 was also used as a gas-sensing material for volatile organic compound (VOC) detection. The results indicated that ZnO@ZIF8 could respond to VOCs at room temperature (26 ​± ​2 ​°C) and was selective to ammonia while pure ZnO was unable to respond to all of the VOCs. The higher efficiency of ZnO@ZIF8 results from the synergistic effect between ZIF-8 and ZnO. Moreover, the combination of ZIF-8 and ZnO could be decreased by the electron-hole recombination process and also reduce the energy band gap which led to low energy operation.

为了提高ZnO在光催化过程和气体传感中的性能，可通过在表面涂上沸石-咪唑酸盐骨架8（ZIF-8）来修饰ZnO。部分溶解的Zn ²⁺来自ZnO的离子与2-甲基咪唑（MeIM）相互作用，以ZnO @ ZIF8异质结构的形式在ZnO表面形成ZIF-8涂层。ZnO @ ZIF8进一步用作亚甲基蓝降解的光催化剂，并将其性能与纯ZnO和纯ZIF-8进行了比较。结果表明，ZnO @ ZIF8的光催化效率优于纯ZnO。此外，ZnO @ ZIF8还用作用于挥发性有机化合物（VOC）检测的气敏材料。结果表明ZnO @ ZIF8可以在室温（26±2°C）下对VOC作出反应，对氨具有选择性，而纯ZnO不能对所有VOC作出反应。ZnO @ ZIF8的更高效率归因于ZIF-8和ZnO之间的协同效应。此外，