Barzinjy Azeez Abdullah, Hamad Samir Mustafa, Faris Vinos Mushir, Abdulrahman Ahmed Fattah, Khan Mohammad Mansoob, Ahmad Amir Abdulrahman
Scientific Research Center, Soran University, Kurdistan-Region, Iraq.
Physics Education Department, Faculty of Education, Tishk International University, Kurdistan-Region, Iraq.
Biomater Sci. 2023 May 16;11(10):3656-3668. doi: 10.1039/d2bm02132c.
A low-cost, simple, inexpensive, and environmentally friendly method has been employed for synthesizing magnetite nanoparticles (FeO NPs). In this study, weeping willow ( L.) aqueous leaf extract has been utilized as a reducing, capping, and stabilizing agent. The synthesized FeO NPs were characterized by ultraviolet-visible (UV-Vis) spectroscopy, FT-IR spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), dynamic light scattering (DLS), zeta potential analysis, differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The localized surface plasmon resonance (LSPR) performance of the FeO NPs was examined. It has been shown that the biosynthesized FeO NPs once dispersed in water can raise the temperature of water significantly when they absorb solar radiation through surface plasmon resonance (SPR). The impact of the pH value on the FeO NPs was also investigated. It has been shown that the optimum pH value among the examined pH values was pH 6. At this pH, the biosynthesized FeO NPs were able to increase the temperature of water from 25 °C to ∼36 °C. This dramatic increase in temperature was owing to the FeO NPs synthesized at pH 6 which acquired high crystallinity, monodispersity, high purity, minimum agglomeration, a small particle size, and high stability. In addition, the mechanism of converting solar energy to thermal energy has been discussed intensively. To the best of our knowledge, this study is unique and the novelty of this investigation is that FeO NPs acquire plasmonic-like properties under solar radiation. Also, they are anticipated to be an innovative photothermal adaptation material for solar-based water heating and heat absorption.
一种低成本、简单、廉价且环保的方法已被用于合成磁铁矿纳米颗粒（FeO NPs）。在本研究中，垂柳（L.）叶水提取物被用作还原剂、封端剂和稳定剂。通过紫外可见（UV-Vis）光谱、傅里叶变换红外（FT-IR）光谱、扫描电子显微镜（SEM）、能量色散X射线光谱（EDX）、X射线衍射（XRD）、动态光散射（DLS）、zeta电位分析、差示扫描量热法（DSC）和热重分析（TGA）对合成的FeO NPs进行了表征。研究了FeO NPs的局域表面等离子体共振（LSPR）性能。结果表明，生物合成的FeO NPs一旦分散在水中，当它们通过表面等离子体共振（SPR）吸收太阳辐射时，能显著提高水温。还研究了pH值对FeO NPs的影响。结果表明，在所研究的pH值中，最佳pH值为pH 6。在此pH值下，生物合成的FeO NPs能够将水温从25℃提高到约36℃。温度的这种显著升高归因于在pH 6合成的FeO NPs，其具有高结晶度、单分散性、高纯度、最小团聚、小粒径和高稳定性。此外，还深入讨论了将太阳能转化为热能的机制。据我们所知，本研究是独特的，该研究的新颖之处在于FeO NPs在太阳辐射下具有类似等离子体的性质。此外，它们有望成为用于太阳能水加热和热吸收的创新光热适配材料。
