Mostafa Md Shadman, Yeasmin Samia, Pranto Md Mahmodul Hassan, Reza Syeda Maliha, Rashid Taslim Ur, Das Harinarayan, Rahman Mahmudur, Habib Ahsan
Department of Electrical and Electronic Engineering, University of Dhaka Dhaka-1000 Bangladesh
Department of Computer Science and Engineering, Daffodil International University Dhaka-1216 Bangladesh.
Nanoscale Adv. 2025 Aug 5. doi: 10.1039/d5na00354g.
Being a very simple and cost-effective way to improve crop growth, nanopriming has been widely adopted as an efficient and advanced technology in agriculture. In recent years, there has been a drive to use green synthesized metal oxide nanoparticles (NPs) for nanopriming, which promotes an eco-friendly approach to material synthesis. Among various factors that influence the properties of NPs, annealing plays a critical role in altering their structural and functional characteristics. However, the role of annealing in optimizing green-synthesized NPs for effective nanopriming remains largely unexplored. Here, we present the first report on the effect of annealing on green-synthesized ZnO NPs for effective nanopriming. We analyze surface morphology, crystallinity, elemental composition, and colloidal stability by varying the annealing temperature of as-synthesized ZnO NPs. We show that colloidally stable smaller NPs (annealed at 400 °C) exhibit optimal performance in nanopriming. This finding is supported by practical data showing a significant improvement in germination percentage (up to 61.7%) and shoot length (up to 85.3%) of seeds treated with 120 mg L of ZnO NP annealed at 400 °C. This study not only provides information on the specialized synthesis of ZnO NPs but also paves the way for sustainable agricultural practices to increase food production.
纳米引发作为一种非常简单且经济高效的改善作物生长的方法，已被广泛采用为农业中的一项高效先进技术。近年来，人们推动使用绿色合成金属氧化物纳米颗粒（NPs）进行纳米引发，这促进了一种生态友好的材料合成方法。在影响纳米颗粒性质的各种因素中，退火在改变其结构和功能特性方面起着关键作用。然而，退火在优化绿色合成纳米颗粒以实现有效纳米引发方面的作用在很大程度上仍未得到探索。在此，我们首次报道了退火对用于有效纳米引发的绿色合成氧化锌纳米颗粒的影响。我们通过改变合成后氧化锌纳米颗粒的退火温度来分析其表面形态、结晶度、元素组成和胶体稳定性。我们表明，胶体稳定的较小纳米颗粒（在400°C退火）在纳米引发中表现出最佳性能。这一发现得到了实际数据的支持，该数据显示，用120 mg/L在400°C退火的氧化锌纳米颗粒处理过的种子，其发芽率（高达61.7%）和芽长（高达85.3%）有显著提高。这项研究不仅提供了有关氧化锌纳米颗粒特殊合成的信息，还为增加粮食产量的可持续农业实践铺平了道路。
