Mechanisms and degradation pathways of tetracycline by Co7Fe3 nanoparticles anchored porous carbon activated peroxymonosulfate
Source abstract
Abstract
In recent years, catalysts based on transition metals have been extensively employed for the activation of peroxymonosulfate (PMS) in the removal of tetracycline (TC) from aquatic environments. However, the efficiency of single transition metals and heterogeneous transition metals as catalysts has been somewhat limited. In this study, different bimetallic Co-Fe catalysts embedded in a porous carbon (Co 7Fe 3-500/600/700/800) were synthesized using a straightforward single-step calcination process at varying temperatures, addressing the issues of poor activation performance of single transition metals and low dispersion of active components in heterogeneous transition metals. The Co 7Fe 3-500/600/700/800 enhanced the electronic configuration, establishing electron-rich and highly active zones that promoted electron transfer between the Co and Fe transition metals. The results showed that Co 7Fe 3-600, exhibited excellent PMS activation performance, removing 95.1 % of TC from the solution within 10 min. Additionally, Co 7Fe 3-600 showed strong adaptability and resistance to interference under various environmental conditions. DFT calculations, HPLC-MS analysis and T.E.S.T analysis were used to predict potential degradation intermediates during TC degradation and assess their biological toxicity. This research introduces an innovative strategy for formulating sophisticated bimetallic alloy catalysts and contributes fresh perspectives on the mechanisms involved in the PMS activation process by bimetallic catalysts.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Catalytic Processes in Materials Science · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (89)
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