In situ enhanced catalytic degradation behavior of antibiotics by graphite anodes from spent lithium-ion batteries: the unique role of self-doped metals
Duanmei Song, Jiadong Yu, Jing Wu, Beikai Zhang, Jinhui Li
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引用次数: 0
Abstract
The research on recycling secondary resources and addressing emerging pollutants has earned global interest. In this study, we recycled spent graphite (SG) from retired lithium-ion batteries (LIBs) and prepared graphite catalyst (PMG) via pyrolysis and mechanical activation for tetracycline hydrochloride (TC) adsorption. The carbon materials were characterized by various analysis methods, which illustrated SG contained self-doped metals (SDMs) like Cu, Fe, and synthesized PMG had an extensive specific surface area (237.2 m2/g). These unique properties made PMG a highly potential catalyst for aqueous antibiotics contamination. The results showed the rapid degradation of TC (2 min, 98.3%) with 0.5 vol.% H2O2 and 250 mg/L TC and high adsorption capacity (495 mg/g) highlighted the exceptional catalytic activity of the PMG, mainly attributed to SDMs. Through studies of the mechanism, we found that TC degradation was driven by generated free radicals and singlet oxygen, with •O2-/HO2• radicals playing a dominant role.
期刊介绍:
The Journal of Cleaner Production is an international, transdisciplinary journal that addresses and discusses theoretical and practical Cleaner Production, Environmental, and Sustainability issues. It aims to help societies become more sustainable by focusing on the concept of 'Cleaner Production', which aims at preventing waste production and increasing efficiencies in energy, water, resources, and human capital use. The journal serves as a platform for corporations, governments, education institutions, regions, and societies to engage in discussions and research related to Cleaner Production, environmental, and sustainability practices.