The impressive photocatalytic performance of Zn-MOF as a novel photocatalyst for the effective purification of dyes under solar exposure

被引:41
作者
Zaamouchi, Imane [1 ]
Kaci, Mohamed Mehdi [2 ]
Zidane, Youcef [3 ]
Belaid, Sabrina [1 ]
Bouacida, Sofiane [4 ,5 ]
Benmerad, Belkacem [1 ]
机构
[1] Univ Bejaia, Fac Sci Exactes, Lab Phys Chim Mat & Catalyse, Bejaia 06000, Algeria
[2] USTHB, Lab React Engn, Fac Mech & Proc Engn, BP 32, Algiers 16111, Algeria
[3] Univ Bejaia, Fac Sci Exact, Dept Chem, Bejaia 06000, Algeria
[4] Univ Larbi Ben Mhidi, Fac Sci exactes & Sci Nat & vie, Dept Sci matiere, Oum El Bouaghi, Algeria
[5] Univ freres Mentouri Constantine 1, Unie Rech Chim Environm & Mol Struct, CHEMS, Constantine 25000, Algeria
关键词
Water pollutants; Zn-MOF; Photocatalysis; Solar light driven; METAL-ORGANIC FRAMEWORKS; LANTHANIDE COORDINATION POLYMERS; VISIBLE-LIGHT; CRYSTAL-STRUCTURE; DEGRADATION; EFFICIENT; ACID; NANOCOMPOSITES; SPECTRA; COMPLEX;
D O I
10.1016/j.molstruc.2023.137070
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The pollution induced by organic dyes is one of the paramount concerns worldwide. Therefore, it is critical to design an efficient preventative plan to address this issue. A novel photocatalyst Zn-MOF was successfully synthesized through the slow evaporation method for effective photocatalytic degradation upon solar light. The compound was characterized using varied characterization approaches, including XRD, TGA, SEM/EDS, XPS, FTIR, UV-vis, and EIS spectroscopy. Photocatalytic efficiencies were assessed by removing MV, RhB, and MB under solar exposure. Within 180 min, the findings revealed abatements of 94.3, 94.2, and 93 % for MV, RhB, and MB dyes, respectively. Additionally, Zn-MOF possesses outstanding reusability without losing activity for the first 5 cycles. Moreover, quenching experiments showed that center dot O-2(-), h(+), and (OH)-O-center dot recreated a pivotal role in the degradation process. An appropriate mechanism was proposed in light of previous Mott-Schottky and UV-vis spectroscopy findings. Altogether, this work illustrates that the Zn-MOF photocatalyst could be a promising prospect for environmental purification.
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页数:8
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