聚苯并恶嗪(PBz)气凝胶具有巨大的潜力,但是他们的传统生产方法引起了环境和安全问题。这项研究通过提出一种生态友好的方法来合成聚苯并恶嗪衍生的高性能碳,从而解决了这一差距。关键创新在于使用丁香酚,乙二胺,和甲醛形成聚苯并恶嗪前体。这通过使用更安全的二甲基亚砜消除了有害溶剂。酸性催化剂起着至关重要的作用,不仅影响微观结构,而且通过促进链间连接来加强材料的骨架。值得注意的是,这种方法允许环境压力干燥,进一步增强其可持续性。聚苯并恶嗪作为前体产生两种不同的碳材料。由PBz煅烧产生的碳材料表示为PBZC,并且由PBz的凝胶化和煅烧产生的碳材料表示为PBZGC。通过不同的技术分析了这些碳材料的结构表征,如XRD,拉曼,XPS,和BET分析。BET分析显示,对于源自凝胶化方法(PBZGC)的碳,表面增加843m2g-1。PBZC和PBZGC的电化学研究表明,一种明确的形态,以及合适的孔隙率,当用作超级电容器的电极时,为提高材料的导电性铺平了道路。这项研究为利用杂原子掺杂,聚苯并恶嗪气凝胶衍生的碳作为可持续和高性能的替代传统碳材料在能源储存设备。
Polybenzoxazine (PBz) aerogels hold immense potential, but their conventional production methods raise environmental and safety concerns. This research addresses this gap by proposing an eco-friendly approach for synthesizing high-performance carbon derived from polybenzoxazine. The key innovation lies in using eugenol, ethylene diamine, and formaldehyde to create a polybenzoxazine precursor. This eliminates hazardous solvents by employing the safer dimethyl sulfoxide. An acidic catalyst plays a crucial role, not only in influencing the microstructure but also in strengthening the material\'s backbone by promoting inter-chain connections. Notably, this method allows for ambient pressure drying, further enhancing its sustainability. The polybenzoxazine acts as a precursor to produce two different carbon materials. The carbon material produced from the calcination of PBz is denoted as PBZC, and the carbon material produced from the gelation and calcination of PBz is denoted as PBZGC. The structural characterization of these carbon materials was analyzed through different techniques, such as XRD, Raman, XPS, and BET analyses. BET analysis showed increased surface of 843 m2 g-1 for the carbon derived from the gelation method (PBZGC). The electrochemical studies of PBZC and PBZGC imply that a well-defined morphology, along with suitable porosity, paves the way for increased conductivity of the materials when used as electrodes for supercapacitors. This research paves the way for utilizing heteroatom-doped, polybenzoxazine aerogel-derived carbon as a sustainable and high-performing alternative to traditional carbon materials in energy storage devices.