TY - JOUR
T1 - Persulfate activation of CuS@Ti3C2-based MXene with Bi-active centers toward Orange II removal under visible light
AU - Wang, Qi
AU - Mei, Yu
AU - Zhou, Ruoxue
AU - Komarneni, Sridhar
AU - Ma, Jianfeng
N1 - Funding Information:
This work was supported by “Qing Lan Project” of Jiangsu Province, “333 Project" of Jiangsu Province, Postgraduate Research & Practice Innovation Program of Jiangsu Province, the Natural Science Foundation of Zhejiang Province (No. LGF20E020002).
Funding Information:
This work was supported by “ Qing Lan Project ” of Jiangsu Province, “ 333 Project " of Jiangsu Province, Postgraduate Research & Practice Innovation Program of Jiangsu Province , the Natural Science Foundation of Zhejiang Province (No. LGF20E020002 ).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/9/5
Y1 - 2022/9/5
N2 - The Ti3C2-based MXene with unique lamellar nanostructure and high conductivity is expected to effectively improve photocatalytic ability of composites as a cocatalyst. Herein, two dimensional Ti3C2-based MXene nanosheets decorated with copper sulfide particles (CuS@MXene) were synthesized by hydrothermal treatment to boost catalytic persulfate (PS) activation under light, exhibiting remarkable reactivity and stability for the rapid removal of Orange II. The phase composition of CuS@MXene was detected by X-ray diffraction (XRD), the morphology of CuS@MXene was characterized by scanning electron microscope (SEM), and the results of X-ray photoelectron spectroscopy (XPS) proved the elemental composition and valence state of elements in the CuS@MXene. The dosage of PS and initial pH of solution were the main factors affecting the removal rate of Orange II, and the quenching experiment showed that 1O2 was the primary reactive species for the removal of Orange II in CuS@MXene -PS system. In addition, this study showed that CuS@MXene provided bi-active centers for PS activation, which was mainly attributed to the rapid charge transfer between dual electron-rich active centers of Cu and Ti. This system may be applicable to the degradation of other challenging organic pollutants.
AB - The Ti3C2-based MXene with unique lamellar nanostructure and high conductivity is expected to effectively improve photocatalytic ability of composites as a cocatalyst. Herein, two dimensional Ti3C2-based MXene nanosheets decorated with copper sulfide particles (CuS@MXene) were synthesized by hydrothermal treatment to boost catalytic persulfate (PS) activation under light, exhibiting remarkable reactivity and stability for the rapid removal of Orange II. The phase composition of CuS@MXene was detected by X-ray diffraction (XRD), the morphology of CuS@MXene was characterized by scanning electron microscope (SEM), and the results of X-ray photoelectron spectroscopy (XPS) proved the elemental composition and valence state of elements in the CuS@MXene. The dosage of PS and initial pH of solution were the main factors affecting the removal rate of Orange II, and the quenching experiment showed that 1O2 was the primary reactive species for the removal of Orange II in CuS@MXene -PS system. In addition, this study showed that CuS@MXene provided bi-active centers for PS activation, which was mainly attributed to the rapid charge transfer between dual electron-rich active centers of Cu and Ti. This system may be applicable to the degradation of other challenging organic pollutants.
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U2 - 10.1016/j.colsurfa.2022.129315
DO - 10.1016/j.colsurfa.2022.129315
M3 - Article
AN - SCOPUS:85130954007
SN - 0927-7757
VL - 648
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
M1 - 129315
ER -