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在微流控芯片中采用水热法合成ZnO纳米棒。使用扫描电子显微镜(SEM)和X射线衍射(XRD)分别对ZnO纳米棒的微观形貌和晶体结构进行分析和表征。结果表明,在微流控芯片中制备的致密的ZnO纳米棒具有良好的结晶性和c轴取向性,ZnO纳米棒的直径和长度随制备时间和在通道中的不同位置发生变化。利用异硫氰酸荧光素(FITC)标记的羊抗牛IgG对ZnO纳米棒的荧光检测性能进行测试,实验结果表明,制备时间为3 h的ZnO纳米棒具有最优的荧光检测性能。在对人甲胎蛋白(AFP)进行检测时,其质量浓度检测限可达10-3 ng/mL,且具有较宽的检测范围(质量浓度为10~(-3)~10 ng/mL~(-1))。
Hydrothermal Synthesis of ZnO Nanorods in Microfluidic Chip. The morphology and crystal structure of ZnO nanorods were analyzed and characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the dense ZnO nanorods prepared in the microfluidic chip have good crystallinity and c-axis orientation. The diameter and length of the ZnO nanorods vary with the preparation time and the different positions in the channel. The fluorescence detection performance of ZnO nanorods with goat anti-bovine IgG labeled with fluorescein isothiocyanate (FITC) was tested. The experimental results show that ZnO nanorods with the best preparation time of 3 h have the best fluorescence detection performance. The limit of detection of AFP is 10-3 ng / mL with a wide detection range (mass concentration of 10 -3 to 10 ng / mL ~ (-1)).