TY - JOUR
T1 - Co3O4/CoO ceramic catalyst
T2 - Bisulfite assisted catalytic degradation of methylene blue
AU - Guo, Beiyang
AU - Ma, Jianfeng
AU - Shi, Yichao
AU - Zheng, Kewen
AU - Wu, Minghong
AU - Ren, Guofa
AU - Komarneni, Sridhar
N1 - Funding Information:
We are grateful to the support from the following Funding Projects: National Key R&D Plan ( 2019YFC1805501 ); the National Natural Scientific Foundation of China ( 20107073 , 41773106 ); the Natural Science Foundation of Shanghai ( 19ZR1418200 ), and Innovative Research Team in University ( IRT13078 ).
Publisher Copyright:
© 2021 Elsevier Ltd and Techna Group S.r.l.
PY - 2021
Y1 - 2021
N2 - Here in, a system of Co3O4/CoO catalyst activated with the aid of bisulfite (NaHSO3) was established for the decomposition of methylene blue (MB). The Co3O4/CoO material was designed by a two-step uniform precipitation and calcination method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), vibrating sample magnetometer (VSM), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectroscopy to detect the crystallinity, morphology, magnetic ability, element valence and the different types of free radicals, respectively. The efficient degradation of MB relies on the synergistic effect between the Co3O4/CoO catalyst and bisulfite (NaHSO3) to generate some strongly oxidizing radicals, which could achieve a MB degradation rate of 90.7% within 40 min using this novel system. Additionally, the ferromagnetic property of Co3O4/CoO catalyst is expected to supply an excellent magnetic separation ability to help separate the solid catalyst from the aqueous solution. The novel catalyst system of Co3O4/CoO/NaHSO3 may serve as a promising new system for wastewater treatment.
AB - Here in, a system of Co3O4/CoO catalyst activated with the aid of bisulfite (NaHSO3) was established for the decomposition of methylene blue (MB). The Co3O4/CoO material was designed by a two-step uniform precipitation and calcination method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), vibrating sample magnetometer (VSM), X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) spectroscopy to detect the crystallinity, morphology, magnetic ability, element valence and the different types of free radicals, respectively. The efficient degradation of MB relies on the synergistic effect between the Co3O4/CoO catalyst and bisulfite (NaHSO3) to generate some strongly oxidizing radicals, which could achieve a MB degradation rate of 90.7% within 40 min using this novel system. Additionally, the ferromagnetic property of Co3O4/CoO catalyst is expected to supply an excellent magnetic separation ability to help separate the solid catalyst from the aqueous solution. The novel catalyst system of Co3O4/CoO/NaHSO3 may serve as a promising new system for wastewater treatment.
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U2 - 10.1016/j.ceramint.2021.06.186
DO - 10.1016/j.ceramint.2021.06.186
M3 - Article
AN - SCOPUS:85108959647
JO - Ceramics International
JF - Ceramics International
SN - 0272-8842
ER -