Hemati Sepideh, Hossain Rumana, Sahajwalla Veena
Centre for Sustainable Materials Research and Technology, SMaRT@UNSW, School of Materials Science and Engineering, UNSW, Sydney, NSW 2052, Australia.
Nanomaterials (Basel). 2021 Oct 20;11(11):2781. doi: 10.3390/nano11112781.
Automotive waste represents both a global waste challenge and the loss of valuable embedded resources. This study provides a sustainable solution to utilise the mixed plastics of automotive waste residue (ASR) as a resource that will curtail the landfilling of hazardous waste and its adverse consequences to the environment. In this research, the selective thermal transformation has been utilised to produce nano silicon carbide (SiC) using mixed plastics and glass from automotive waste as raw materials. The composition and formation mechanisms of SiC nanoparticles have been investigated by X-ray diffraction (XRD), X-ray-Photoelectron Spectroscopy (XPS) and Transmission Electron Microscopy (TEM). The as synthesised SiC nanoparticles at 1500 °C has uniform spherical shapes with the diameters of the fixed edges of about 50-100 nm with a porous structure. This facile way of synthesising SiC nanomaterials would lay the foundations for transforming complex wastes into value-added, high-performing materials, delivering significant economic and environmental benefits.
汽车废弃物既代表着全球废弃物挑战，也意味着宝贵的嵌入式资源的流失。本研究提供了一种可持续解决方案，即利用汽车废渣（ASR）中的混合塑料作为一种资源，这将减少危险废弃物的填埋及其对环境的不利影响。在本研究中，采用选择性热转化法，以汽车废弃物中的混合塑料和玻璃为原料制备纳米碳化硅（SiC）。通过X射线衍射（XRD）、X射线光电子能谱（XPS）和透射电子显微镜（TEM）研究了SiC纳米颗粒的组成和形成机理。在1500℃下合成的SiC纳米颗粒具有均匀的球形形状，固定边缘直径约为50-100nm，具有多孔结构。这种合成SiC纳米材料的简便方法将为将复杂废弃物转化为增值高性能材料奠定基础，带来显著的经济和环境效益。
