ZnO/CuO nanocomposites were derived from a metal-organic framework (MOF) using a simple precipitation method. The mesoporous nature, crystallinity, and fine particle size of the synthesized ZnO/CuO nanocomposites varied with CuO amounts, affecting the gas sensing ability of different gases (H₂S, CO, C₆H₆, and C₇H₈ gases). It was found that the ZnO/CuO (40 mol%) gas sensor showed the highest sensing capacity in terms of response, selectivity, and repeatability on low concentrations of H₂S gas (10 ppm). The strong sensing performance, short response time (58 s) and recovery time (273 s) were explained in terms of the texture coefficients (phase percentage, crystal size, and crystallinity) of the ZnO and CuO phase compositions, resulting in the formation of a high number of p-n junctions and quantum confinement effects in the nanocomposite, as well as the lower binding energy of H₂S. The fast sensing ability of a low H₂S concentration highlights the practical importance of these MOF-derived ZnO/CuO nanocomposites.

ZnO/CuO 纳米复合材料是使用简单的沉淀方法从金属有机骨架 (MOF) 衍生而来的。合成的 ZnO/CuO 纳米复合材料的介孔性质、结晶度和细粒度随 CuO 的含量而变化，影响不同气体（H ₂ S、CO、C ₆ H ₆和 C ₇ H ₈气体）的气敏能力。结果表明，ZnO/CuO (40 mol%) 气体传感器在低浓度 H ₂的响应、选择性和可重复性方面表现出最高的传感能力S 气体 (10 ppm)。根据ZnO和CuO相组成的织构系数（相百分比、晶体尺寸和结晶度）来解释强传感性能、短响应时间（58 s）和恢复时间（273 s），导致形成纳米复合材料中大量的 pn 结和量子限制效应，以及 H ₂ S的较低结合能。低 H ₂ S 浓度的快速传感能力突出了这些 MOF 衍生的 ZnO/CuO 纳米复合材料的实际重要性.