Electro-netting: Fabrication of two-dimensional nano-nets for highly sensitive trimethylamine sensing
Electro-netting: Fabrication of two-dimensional nano-nets for highly sensitive trimethylamine sensing
复制标题
电子网络：用于高灵敏度三甲胺传感的二维纳米网的制造
DOI：
10.1039/c0nr00783h
复制
发表时间：
2011-01-01
期刊：
影响因子：
6.7
通讯作者：
Sun, Gang
中科院分区：
文献类型：
--
作者：
Wang, Xianfeng;Ding, Bin;Sun, Gang
通过简单的电网状工艺，成功制备了由直径为10- 30nm的互连超薄纳米线组成的二维聚丙烯酸（PAA）纳米网。纳米网络的相分离速度快，且服从最小能量原理，具有理想和加权斯坦纳网络的明显几何特征。多功能纳米网络增强了互联性和额外的表面积，促进了分析物向膜的扩散，从而显著提高了气体扩散系数和传感性能。例如，在石英晶体微天平（QCM）的电极上，通过静电纺丝/电网沉积含有纤维和纳米片的PAA膜，用于检测三甲胺（TMA），该方法具有快速响应（180 s），低检测限（1 ppm）和室温下理想的选择性。
Two-dimensional (2D) polyacrylic acid (PAA) nano-nets that comprise interlinked ultrathin nanowires with diameters of 10-30 nm are successfully prepared by a facile electro-netting process. Nano-nets feature a clear geometric characteristic with ideal and weighted Steiner networks due to the rapid phase separation process and its obeyed minimal energy principle. The versatile nano-nets create enhanced interconnectivity and additional surface area and facilitate the diffusion of analytes into the membranes, which significantly boost the gas diffusion coefficient and sensing properties. As one example, PAA membranes containing fibers and nanonets used as sensing materials are deposited by electrospinning/electro-netting on an electrode of a quartz crystal microbalance (QCM) for trimethylamine (TMA) detection, which exhibits a quick response (similar to 180 s), low detection limit (1 ppm) and ideal selectivity at room temperature.