Rakhmanova Aizhan, Kalybekkyzy Sandugash, Soltabayev Baktiyar, Bissenbay Aiman, Kassenova Nazym, Bakenov Zhumabay, Mentbayeva Almagul
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
National Laboratory Astana, Nazarbayev University, Nur-Sultan 010000, Kazakhstan.
Nanomaterials (Basel). 2022 May 18;12(10):1733. doi: 10.3390/nano12101733.
Zinc oxide (ZnO) is a well-known semiconductor material due to its excellent electrical, mechanical, and unique optical properties. ZnO nanoparticles are widely used for the industrial-scale manufacture of microelectronic and optoelectronic devices, including metal oxide semiconductor (MOS) gas sensors, light-emitting diodes, transistors, capacitors, and solar cells. This study proposes optimization of synthesis parameters of nanosized ZnO by the electrospinning technique. A Box-Behnken design (BB) has been applied using response surface methodology (RSM) to optimize the selected electrospinning and sintering conditions. The effects of the applied voltage, tip-to-collector distance, and annealing temperature on the size of ZnO particles were successfully investigated. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images confirm the formation of polyvinylpyrrolidone-zinc acetate (PVP-ZnAc) fibers and nanostructured ZnO after annealing. X-ray diffraction (XRD) patterns indicate a pure phase of the hexagonal structure of ZnO with high crystallinity. Minimal-sized ZnO nanoparticles were synthesized at a constant applied potential of 16 kV, with a distance between collector and nozzle of 12 cm, flow rate of 1 mL/h, and calcination temperature of 600 °C. The results suggest that nanosized ZnO with precise control of size and morphology can be fabricated by varying electrospinning conditions, precursor solution concentration, and sintering temperature.
氧化锌（ZnO）因其优异的电学、力学和独特的光学性能而成为一种知名的半导体材料。ZnO纳米颗粒广泛用于微电子和光电器件的工业规模制造，包括金属氧化物半导体（MOS）气体传感器、发光二极管、晶体管、电容器和太阳能电池。本研究提出通过静电纺丝技术优化纳米ZnO的合成参数。采用响应面法（RSM）应用Box-Behnken设计（BB）来优化选定的静电纺丝和烧结条件。成功研究了施加电压、针尖到收集器距离和退火温度对ZnO颗粒尺寸的影响。扫描电子显微镜（SEM）和透射电子显微镜（TEM）图像证实了退火后聚乙烯吡咯烷酮-醋酸锌（PVP-ZnAc）纤维和纳米结构ZnO的形成。X射线衍射（XRD）图谱表明ZnO具有高结晶度的六方结构纯相。在16 kV的恒定施加电位、收集器与喷嘴之间的距离为12 cm、流速为1 mL/h以及煅烧温度为600℃的条件下合成了最小尺寸的ZnO纳米颗粒。结果表明，通过改变静电纺丝条件、前驱体溶液浓度和烧结温度，可以制备出尺寸和形貌得到精确控制的纳米ZnO。
