期刊
CHEMOSPHERE
卷 307, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.chemosphere.2022.136074
关键词
Heterogeneous elecrto-Fenton; High-temperature shock; Synergistic activation; H2O2 activation; Methylisothiazolinone
Fe/Mn@carbon cloth (CC) fabricated through high-temperature shock technique was used as cathode modification for methylisothiazolinone (MIT) degradation in heterogeneous electro-Fenton process. The modified cathode efficiently produces and activates H2O2, showing high electrocatalytic activity for MIT degradation.
Fe/Mn@carbon cloth (CC) was successfully fabricated through high-temperature shock (HTS) technique and used as cathode modification in heterogeneous electro-Fenton (hetero-EF) process for methylisothiazolinone (MIT) degradation. The nanocrystalline on Fe/Mn@CC electrode is doped with Fe and Mn oxides and coated with carbon layer, which could markedly enhance the electrocatalysis with high electro-chemical active area and low resistance. Fe/Mn@CC modified cathode can efficiently in-situ produce and activate H2O2, showing high elec-trocatalytic activity to MIT degradation. The 95.2% MIT degradation with in 100 min were achieved under the condition of 30 mA current, 0.75 L min(-1) aeration intensity and initial pH = 3. Based on the CV curves and stability test, the high degradation activity revealed the kinetically beneficial regeneration of Fe-II/Mn-II in Fe/ Mn@CC and activation of H2O2. The electron transfer between Fe-II/III and Mn-II/III, together with the direct Fe-II/Mn-II regeneration on the cathode, could markedly promote the H2O2 utilization, and eventually lead to MIT degradation.
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