TY - JOUR
T1 - Persulfate activation by MnCuS nanocomposites for degradation of organic pollutants
AU - Zhou, Jin
AU - Cheng, Hao
AU - Ma, Jianfeng
AU - Peng, Mingguo
AU - Kong, Yong
AU - Komarneni, Sridhar
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China (Grant No. 21477009 and 20968005 ), “Qing Lan Project” of Jiangsu Province, the High Levels of Innovation Team and Excellence Scholars Program in Colleges of Guangxi and the Opening Project of Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control (KF201812-4). One of us (SK) was supported by the College of Agricultural Sciences under Station Research Project No. PEN04705 .
PY - 2021/4/15
Y1 - 2021/4/15
N2 - 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.
AB - 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.
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U2 - 10.1016/j.seppur.2020.118290
DO - 10.1016/j.seppur.2020.118290
M3 - Article
AN - SCOPUS:85099406276
VL - 261
JO - Separation and Purification Technology
JF - Separation and Purification Technology
SN - 1383-5866
M1 - 118290
ER -