Carbon-based nanomaterials have attracted much research interest in recent years due to their excellent chemical and physiological properties such as chemical stability, low cytotoxicity, and biocompatibility. The traditional methods to prepare hollow carbon nanospheres require complicated instrumentation and harsh chemicals, including high-temperature furnace, gas inlets, and hydrogen fluoride etching. Herein, we propose a new strategy to prepare hollow carbon nanospheres in a simple and fast manner by using microwave radiation. Polypyrrole-coated silica core-shell nanoparticles (SiO₂@PPy NPs) were firstly prepared and subsequently processed by microwave radiation and aqueous alkaline solution to obtain the hollow carbon nanospheres. This facile method has potent potential to be utilized in the preparation of different types of hollow carbon nanospheres with various microstructure and elemental composition.

中文翻译：

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微波辐射轻松合成空心碳纳米球

碳基纳米材料由于其优异的化学和生理特性，例如化学稳定性，低细胞毒性和生物相容性，近年来引起了很多研究兴趣。制备空心碳纳米球的传统方法需要复杂的仪器和苛刻的化学药品，包括高温炉，进气口和氟化氢蚀刻。在本文中，我们提出了一种通过微波辐射以简单快速的方式制备空心碳纳米球的新策略。聚吡咯涂层二氧化硅核壳纳米粒子（SiO ₂首先制备PPPPy NPs，然后通过微波辐射和碱性水溶液进行处理，以获得中空的碳纳米球。这种简便的方法具有潜在的潜力，可用于制备具有各种微观结构和元素组成的不同类型的中空碳纳米球。