This study explores the fabrication of hematite (α-Fe₂O₃) nanoparticles utilizing aqueous extracts of Plectranthus amboinicus, which act as reducing and stabilizing agents. The prepared hematite (α-Fe₂O₃) nanoparticles have been characterized by TGA, PXRD, FT-IR, Raman, DRS UV–visible, Photoluminescence, SEM, Particle size distribution, and zeta potential measurements (DLS), respectively. According to the XRD reports, hematite (α-Fe₂O₃) nanoparticles are rhombohedral with a crystallite size of 7.0 nm. As of the FT-IR spectrum, the peaks attained at 544 and 447 cm⁻¹ are attributes of Fe–O stretching in α-Fe₂O₃. As a result of Raman analysis, the existence of vibration modes of hematite (α-Fe₂O₃) nanoparticles was confirmed. Through the DRS UV–visible reflectance, the bandgap energy of hematite (α-Fe₂O₃) nanoparticles was detected to be 2.0 eV. The photoluminescence spectrum shows band edge emission at 552 nm. The morphology of hematite (α-Fe₂O₃) nanoparticles was aggregated with dense irregular shape and highly porous. Particle size distribution and zeta potential value of hematite (α-Fe₂O₃) nanoparticles were reported at 40 nm and − 35 mV, respectively. These nanoparticles exhibit strong antibacterial activity at a concentration of 30 μg/mL and also exhibit substantial minimum inhibition concentration value for gram-positive and gram-negative bacteria. The proposed strategy is therefore rapid, simple, cost-effective, and environmentally friendly which can be employed for the fabrication of hematite (α-Fe₂O₃) nanoparticles and can be used as a potent antibacterial agent.

本研究探讨赤铁矿的制造（的α-Fe ₂ ö ₃）纳米粒子利用的水提取物的左手香，其充当还原和稳定剂。将制备的赤铁矿（α-的Fe ₂ ö ₃）的纳米颗粒的特点是TGA，PXRD，FT-IR，拉曼光谱，DRS紫外可见，光致发光，SEM，粒度分布，和zeta电位测量（DLS），分别。根据XRD报告，赤铁矿（α-的Fe ₂ ö ₃）纳米颗粒是菱面体的具有7.0纳米的微晶尺寸。作为FT-IR光谱测定，在544和447厘米获得的峰^-1是在拉伸的α-Fe的铁-O属性₂O ₃。拉曼分析的结果，赤铁矿的振动模式存在（的α-Fe ₂ ö ₃）纳米颗粒得到了证实。通过DRS紫外-可见反射率，赤铁矿的带隙能量（的α-Fe ₂ ö ₃）检测的纳米颗粒为2.0电子伏特。光致发光光谱显示在552nm处的带边缘发射。赤铁矿（α-铁形态₂ ö ₃）纳米粒子与密实的不规则的形状和高度多孔的聚合。颗粒尺寸分布和赤铁矿的ζ电势值（的α-Fe ₂ ö ₃纳米颗粒分别报道在40 nm和-35 mV下。这些纳米颗粒在浓度为30μg/ mL时显示出强大的抗菌活性，并且还显示出对革兰氏阳性和革兰氏阴性细菌的最低抑菌浓度值。所提出的策略因此快速，简单，这可用于（的α-Fe的赤铁矿的制造成本高，且环保₂ ö ₃）纳米颗粒和可被用作一种有效的抗菌剂。