In the present work, a novel bio-synthesis of highly crystalline cubic MgO nanoparticles from aqueous extracts obtained from date pits is reported. The synthesised cubic MgO nanoparticles were annealed at 500 and 700 °C for 2 h in air. Characterization of the samples was carried out using various characterization techniques. To show the photocatalytic effectiveness of date pits mediated MgO nanoparticles, degradation ability with Methylene blue (MB) under visible irradiation was evaluated.

HRTEM analysis of the samples reveals a spherical-like structure of the nanoparticles while selected area electron diffraction and XRD patterns showed that the annealed nanoparticles are crystalline. The photocatalysis efficiency showed 64 and 52% degradation ability for MB of MgO nanoparticles annealed at 500 and 700 °C, respectively.

在目前的工作中，报道了一种新的生物合成方法，该方法是从枣核中提取的水性提取物合成高度结晶的立方MgO纳米颗粒。将合成的立方MgO纳米颗粒在500和700°C的空气中退火2小时。样品的表征使用多种表征技术进行。为了显示枣核介导的MgO纳米颗粒的光催化效果，评估了在可见光照射下亚甲基蓝（MB）的降解能力。

样品的HRTEM分析显示了纳米颗粒的球形结构，而选定区域的电子衍射和XRD图谱显示退火的纳米颗粒是结晶的。对于分别在500和700°C退火的MgO纳米颗粒MB，光催化效率分别显示64％和52％的降解能力。