Journal
NANOSCALE
Volume 3, Issue 3, Pages 911-915Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c0nr00783h
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Funding
- National Natural Science Foundation of China [50803009, 10872048]
- 111 Project [111-2-04, B07024]
- Shanghai Committee of Science and Technology [10JC1400600]
- National Basic Research Program of China [2011CB606100]
- Shanghai Municipal Education Commission
- Fundamental Research Funds for the Central Universities
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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.
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