An eco-friendly and economical, green synthesis method has been employed for the synthesis of iron-oxide (Fe2O3) nanoparticles by using orange peel extract as a stabilizing agent. The thermody-namic properties were evaluated using thermogravimetric analysis-diffraction scanning calorimetry (TGA-DSC), the formation of Fe2O3 nanoparticles was confirmed using fourier transform infra-red spectroscopy (FTIR), X-Ray diffraction (XRD) and scanning electron microscopy-energy dispersive X-ray (SEM-EDX) spectroscopy. The hydrodynamic diameter was observed using a dynamic laser scattering-particle size analyser (DLS-PSA). The green synthesized nanoparticles were used to evaluate their antibacterial activity via the agar well diffusion method against gram positive (Bacillus subtilis, Staphylococcus aureusb) and gram negative (Escherichia coli., Pseudomonas aeruginosa) bacteria while keeping benzalkonium chloride, chlorhexidine, hexachlorophene and phenol as controls.

中文翻译：

---

橙皮提取物中Fe2O3纳米颗粒的绿色合成及其抗菌活性研究

以橙皮提取物为稳定剂，采用环保、经济、绿色的合成方法合成氧化铁（Fe2O3）纳米颗粒。使用热重分析-衍射扫描量热法 (TGA-DSC) 评估热力学性能，使用傅里叶变换红外光谱 (FTIR)、X 射线衍射 (XRD) 和扫描电子显微镜确认 Fe2O3 纳米颗粒的形成-能量色散 X 射线 (SEM-EDX) 光谱。使用动态激光散射粒度分析仪（DLS-PSA）观察流体动力学直径。绿色合成纳米颗粒用于通过琼脂井扩散法评估其对革兰氏阳性菌（枯草芽孢杆菌、金黄色葡萄球菌）和革兰氏阴性菌（大肠杆菌）的抗菌活性。