Persulfate activation by MnCuS nanocomposites for degradation of organic pollutants

Jin Zhou, Hao Cheng, Jianfeng Ma, Mingguo Peng, Yong Kong, Sridhar Komarneni

Research output: Contribution to journalArticlepeer-review

Abstract

MnCuS nanocomposites were prepared by one-pot simple hydrothermal method, the crystallinity and morphology were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Transmission Electron Microscope (TEM), and Brunauer, Emmett and Teller (BET) respectively. Then, the materials were then used to activate persulfate (Na2S2O8) in Orange II degradation. The degradation efficiency of MnCuS with Mn:Cu mole ratio of 1:1 reached 98.2% within 120 min under visible light, which have higher efficiency than other mole ratios of samples or pure MnS and CuS, Furthermore, the nanocomposites also showed good recycling stability performance, and the degradation efficiency could still reach 97.1% even after three degradation cycles. The mechanism of activating Na2S2O8 by MnCuS is proposed as follows: the cycling of active sites of Cu(Ⅰ)/Cu(Ⅱ) and Mn(Ⅱ)/Mn(III) catalyzed Na2S2O8 to produce sulfate radicals (SO4•−), which improved the catalytic degradation ability of MnCuS/Na2S2O8/visible light system.

Original languageEnglish (US)
Article number118290
JournalSeparation and Purification Technology
Volume261
DOIs
StatePublished - Apr 15 2021

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Filtration and Separation

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