Department of Chemistry, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
Department of Soil Science, Punjab Agricultural University, Ludhiana 141004, Punjab, India.
J Nanosci Nanotechnol. 2021 Dec 1;21(12):5896-5905. doi: 10.1166/jnn.2021.19515.
Nanotechnology has the ability to produce novel nano-sized materials with excellent physical and chemical properties to act against phytopathogenic diseases, essential for revolution of agriculture and food industry. The development of facile, reliable and eco-friendly processes for the synthesis of biologically active nanomaterials is an important aspect of nanotechnology. In the present paper, we attempted to compare sonochemical and co-precipitation method for the synthesis of metal sulfide nanoparticles (MS-NPs) for their structural and antifungal properties against various phytopathogenic fungi of rice. The preparation of nanospheres (NSs) and nano rods (NRs) of CuS, FeS and MnS was monitored by UV-Visible spectroscopy complemented by transmission electron microscope (TEM), scanning electron microscope (SEM), atomic force microscopy (AFM), dynamic light scattering (DLS) and Zeta potential analyser. Sonochemical method resulted in formation of spherical shaped nanoparticles of size (7-120 nm), smaller than those of nanorods (50-200 nm) prepared by co-precipitation produced. It was observed that the metal sulfide nanospheres exhibited a better antifungal potential against as compared to rod shaped metal sulfide nanoparticles. Smaller size and large surface area of spherical shaped particles opens up an important perspective of the prepared MS-NPs.
纳米技术具有生产具有优异物理和化学性能的新型纳米材料的能力，可用于对抗植物病原菌，这对于农业和食品工业的革命至关重要。开发简便、可靠和环保的生物活性纳米材料合成工艺是纳米技术的一个重要方面。在本文中，我们尝试比较了超声化学法和共沉淀法合成金属硫化物纳米颗粒（MS-NPs），以研究其结构和对水稻各种植物病原菌的抗真菌性能。通过紫外-可见光谱法监测纳米球（NSs）和纳米棒（NRs）的制备，并辅以透射电子显微镜（TEM）、扫描电子显微镜（SEM）、原子力显微镜（AFM）、动态光散射（DLS）和Zeta 电位分析仪。超声化学法导致形成尺寸为（7-120nm）的球形纳米颗粒，比共沉淀法制备的纳米棒（50-200nm）小。观察到与棒状金属硫化物纳米颗粒相比，金属硫化物纳米球对具有更好的抗真菌潜力。球形颗粒的较小尺寸和较大的表面积为所制备的 MS-NPs 开辟了一个重要的前景。
