Metal-doped zinc oxide nanostructures (ZONSs) of schemes Cu_xZn_1−xO and Mg_xZn_1−xO (x = 0, 0.01, 0.1 and 0.5 M) were synthesized via co-precipitation technique. The structural parameters of as-prepared ZONSs were investigated from XRD technique and doping concentration limit for both types of dopant was found, causing a shift in the E_g value based on the availability of density of states for that dopant. SEM analysis confirmed thin sheet-like nanocrystalline morphologies of all samples within size range 78–450 nm. Optical analysis revealed that higher concentration of Cu in the sample resulted in overlapped impurity states following a considerable increase in its E_g value. Among all samples, Cu_0.1 and Mg_0.01 samples with reduced PL emission, exhibited maximum degradation of MB dye under direct-sunlight exposure of few seconds. As positively charged metal-doped ZONSs attract more toward Gram-negative bacterial membrane, the suggested samples have shown improved antibacterial performance against Klabsiella strains.

通过共沉淀技术合成了Cu _x Zn _1-x O 和 Mg _x Zn _1-x O（x = 0、0.01、0.1和 0.5 M）方案的金属掺杂氧化锌纳米结构（ZONS）。通过 XRD 技术研究了所制备的 ZONS 的结构参数，并发现了两种类型的掺杂剂的掺杂浓度限制，导致E _g值基于该掺杂剂的状态密度的可用性发生变化。SEM 分析证实了尺寸范围为 78-450 nm 的所有样品的薄片状纳米晶形貌。光学分析表明，样品中较高浓度的 Cu 在其E _g显着增加后导致重叠的杂质状态价值。在所有样品中，具有减少的 PL 发射的Cu _0.1和 Mg _0.01样品在几秒钟的阳光直射下表现出最大的 MB 染料降解。由于带正电荷的金属掺杂 ZONS 对革兰氏阴性细菌膜的吸引力更大，因此建议的样品对Klabsiella菌株的抗菌性能有所提高。