Abstract

Nickel-oxide nanoparticles (NiO NPs) using aqueous Rauvolfia serpentine leaf extract were tested against Callosobruchus maculatus. Synthesis of NiO NPs was confirmed by various physiochemical methods such as UV-visible spectroscopy, powder X-ray diffraction, Fourier transform infrared spectroscopy etc. The sharp and strong reflections (111, 200, 220, 311 and 222 crystal planes) of the monoclinic phase and cubic NiO NPs were observed. The crystallite sizes varied in Scherrer's and W–H plots from 9.42 (20 ml) to 4.89 nm (15 ml) and 20.0 nm (10 ml) to 10.12nm (15 ml), respectively. The highest strain was observed in 15 ml (93.8 × 10⁻⁴) and the lowest (37.9 × 10⁻⁴) in 20ml extract. The C. maculatus on black gram seeds with 5, 10, 20 and 40ppm NiO NPs showed decreased fecundity and an increased developmental period in a dose-dependent manner. The longevity of the insect did not differ significantly. Seed germination was significantly reduced at 40ppm (79.12%)

摘要

使用水性萝芙木蛇纹石叶提取物的氧化镍纳米粒子 (NiO NPs)进行了针对Callosobruchus maculatus 的测试。NiO NPs 的合成通过各种物理化学方法得到证实，如紫外可见光谱、粉末 X 射线衍射、傅里叶变换红外光谱等。观察到相和立方 NiO NPs。Scherrer 和 W-H 图中的微晶尺寸分别从 9.42（20 毫升）到 4.89 纳米（15 毫升）和 20.0 纳米（10 毫升）到 10.12 纳米（15 毫升）不等。在 15 ml (93.8 × 10 ^-4 )中观察到最高菌株，在 20 ml提取物中观察到最低 (37.9 × 10 ^-4 )。在四纹豆象在含有 5、10、20 和 40 ppm NiO NPs 的黑克种子上，以剂量依赖性方式显示繁殖力下降和发育期延长。昆虫的寿命没有显着差异。40ppm (79.12%) 时种子发芽率显着降低