This study explored a scalable decomposition-catalysis route to effectively valorize disposable COVID-19 face mask into tunable value-added products. The metal-doping carbonaceous catalysts (M/Cs) were successfully synthesized through a single-step energy-efficient thermal process. The modest decomposition-catalysis of face mask over Zn/C gave rise to a relatively high yield (73.52%) of liquid oil with 99% of selectivity toward jet fuel range (C₈ – C₁₆) hydrocarbons. Besides, the scalable decomposition-catalysis of face mask over Ni(50)/C at 800 ℃ was observed to thoroughly transform face mask into gas with the cumulative gas yield of 967 NmL/g_mask, involving 49.90 vol% of H₂ and 40.90 vol% of CH₄. Moreover, a dense, entangled growth of carbon nanotubes were formed on the surface of M/Cs. In brief, this study developed a scalable and promising route by using M/Cs for the valorization of COVID-19 face mask into hydrocarbon fuel or coupling harvest of H₂-enriched fuel gas and carbon nanotubes.

本研究探索了一种可扩展的分解催化途径，以有效地将一次性 COVID-19 口罩转化为可调节的增值产品。通过一步节能热工艺成功合成了金属掺杂碳质催化剂（M/Cs）。面罩在 Zn/C 上的适度分解催化产生了相对较高产率 (73.52%) 的液体油，对喷气燃料范围 (C ₈ - C ₁₆ ) 烃类具有 99% 的选择性。_{此外，在Ni(50)/C上，800 ℃下，口罩的可扩展分解催化将口罩}彻底转化为气体，累计产气量为967 NmL/g ，其中H 2为49.90 vol%，H ₂为40.90 。 CH _{4的体积百分比}. 此外，在 M/Cs 的表面上形成了密集的、纠缠的碳纳米管生长。简而言之，本研究通过使用 M/C 将 COVID-19 面罩稳定化为碳氢化合物燃料或耦合收获富含 H ₂的燃料气体和碳纳米管，开发了一条可扩展且有前景的路线。