Sun Lei, Wang Zhou, Liu Ruijiang
School of Pharmacy, Jiangsu University, Zhenjiang 212013, China.
College of Vanadium and Titanium, Panzhihua University, Panzhihua 617000, China.
Materials (Basel). 2025 May 1;18(9):2079. doi: 10.3390/ma18092079.
A facile low temperature hydrothermal-calcination approach was developed for the fabrication of β-FeOOH nanorods (NRs) and hollow-structure α-FeO magnetic nanorods (MNRs), and the products were characterized using SEM, TEM, XRD and VSM techniques. To achieve smaller-sized β-FeOOH NRs, the effects of Fe concentration, the volume ratio of ethanol to water in solution, hydrothermal temperature, and hydrothermal time on the structure of the precursors were systematically investigated, and the nanorods with an average length 104 nm and diameter 36 nm were fabricated at hydrothermal temperature of 100 °C for 2 h using 0.15 M ferric chloride hexahydrate in 50% ethanol solution. Subsequently, the hollow-structure α-FeO MNRs with an average length of 67 nm, diameter of 20 nm, and thickness of 5 nm were successfully obtained via the calcination process at 400 °C for 2.5 h for versatile applications.
开发了一种简便的低温水热-煅烧方法来制备β-FeOOH纳米棒（NRs）和中空结构的α-FeO磁性纳米棒（MNRs），并使用扫描电子显微镜（SEM）、透射电子显微镜（TEM）、X射线衍射（XRD）和振动样品磁强计（VSM）技术对产物进行了表征。为了制备尺寸更小的β-FeOOH NRs，系统研究了铁浓度、溶液中乙醇与水的体积比、水热温度和水热时间对前驱体结构的影响，并在100℃水热2小时的条件下，使用0.15M六水合氯化铁在50%乙醇溶液中制备出了平均长度为104nm、直径为36nm的纳米棒。随后，通过在400℃煅烧2.5小时成功获得了平均长度为67nm、直径为20nm、厚度为5nm的中空结构α-FeO MNRs，以用于多种应用。
