通过水热法合成了异质结纳米复合材料(ZnO:NiO:CuO),并在三种不同的温度(400°C,600°C,和800°C)。结构,光学,和电性能进行了测试,采用XRD,SEM,UV-Vis,FTIR,和LCR计技术来研究退火的影响。提高退火温度导致纳米复合材料(NCP)表现出增强的结晶度,纯度,光学性质,和改善的电气和介电性能。对于退火温度400°C,NCP的计算晶体尺寸(Debye-Scherrer方法)确定为21、26和34nm,600°C,800°C,分别。合成样品的计算带隙在2.92-2.55eV的范围内。这种温度相关的退火过程显著影响颗粒尺寸,形态学,带隙特性,和光催化效率。EDX剖析肯定了样品的纯度,有锌的元素峰,Cu,Ni,和O.这些NCP对各种染料溶液(甲基橙(MO),亚甲蓝(MB),和染料的混合溶液)在阳光下,并且通过圆盘扩散法评估也显示出良好的抗菌性能。值得注意的是,在400°C下退火的纳米复合材料通过在阳光下仅90分钟内降解96%MB和91%MO而表现出特别高的降解效率。
Heterojunction nanocomposites (ZnO:NiO:CuO) were synthesized via a hydrothermal method and annealed at three different temperatures (400 °C, 600 °C, and 800 °C). The structural, optical, and electrical properties were examined by employing XRD, SEM, UV-Vis, FTIR, and LCR meter techniques to investigate the effects of annealing. Increasing the annealing temperature resulted in the nanocomposites (NCPs) exhibiting enhanced crystallinity, purity, optical properties, and improved electrical and dielectric behavior. The calculated crystalline sizes (Debye-Scherrer method) of the NCPs were determined to be 21, 26 and 34 nm for annealing temperature 400 °C, 600 °C, and 800 °C, respectively. The calculated bandgaps of synthesized samples were found in the range of 2.92-2.55 eV. This temperature-dependent annealing process notably influenced particle size, morphology, band-gap characteristics, and photocatalytic efficiency. EDX analysis affirmed the sample purity, with elemental peaks of Zn, Cu, Ni, and O. These NCPs demonstrated exceptional photocatalytic activity against various dyes solutions (Methyl orange (MO), Methylene Blue (MB), and mixed solution of dyes) under sunlight and also showed good antibacterial properties assessed by the disc diffusion method. Notably, the nanocomposite annealed at 400 °C exhibited a particularly high degradation efficiency by degrading 96% MB and 91% MO in just 90 min under sunlight.