论文部分内容阅读
为了增强银纳米线与基材的结合性和提高银纳米线在基材上分布的规整性,采用恒电压沉积法,以改进的阳极氧化铝/聚乙烯醇/氟掺杂氧化锡(AAO/PVA/FTO)为模板,制备出具有不同形貌和尺寸的FTO基纳米银电极。场发射扫描电子显微镜(Field Emission Scanning Electron Microscopy,FESEM)研究结果表明沉积60min时的产物为生长在PVA膜上的长度为20~25μm的FTO基银纳米线阵列。进行了该电极对低浓度甲醛催化氧化的研究,实现了对甲醛浓度在0.1~3.7mmol/L范围的检测,检测灵敏度为48.966 0μA·cm-2·(mmol/L)-1,检测限为6.48×10-3 mmol/L。与乙醛、乙醇和丁醇相比,该电极对甲醛的选择性好,并且制备方法简便,有望作为低浓度甲醛检测传感器。
In order to enhance the binding of silver nanowires to the substrate and improve the regularity of the distribution of the silver nanowires on the substrate, a modified anodic aluminum oxide / polyvinyl alcohol / fluorine-doped tin oxide (AAO / PVA / FTO) as template to prepare FTO-based nano-silver electrodes with different morphologies and sizes. Field Emission Scanning Electron Microscopy (FESEM) results show that the deposition of 60min when the product is grown on the PVA film FTO-based silver nanowire arrays of 20 ~ 25μm in length. The catalytic oxidation of formaldehyde with low concentration was studied. The detection limit of formaldehyde was between 0.1 and 3.7mmol / L, the detection sensitivity was 48.966μA · cm-2 · (mmol / L) -1. The detection limit was 6.48 × 10-3 mmol / L. Compared with acetaldehyde, ethanol and butanol, the electrode has good selectivity to formaldehyde, and the preparation method is simple and convenient, which is expected to be used as a low-concentration formaldehyde detection sensor.