Статья

Green synthesis of Co-doped ZnO via the accumulation of cobalt ion onto Eichhornia crassipes plant tissue and the photocatalytic degradation efficiency under visible light

Osman Ahmed ZelekewDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaSetegn Geta AragawDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaFedlu Kedir SabirDepartment of Applied Chemistry, Adama Science and Technology University, Adama, EthiopiaDinsefa Mensur AndosheDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaAlemayehu Dubale DumaDong–Hau KuoDepartment of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, TaiwanXiaoyun ChenCollege of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002, ChinaTemesgen Debelo DesissaDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaBelay Brehane TesfamariamDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaGebisa Bekele FeyisaDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, EthiopiaHairus AbdullahUniversitas Prima Indonesia, Department of Industrial Engineering, Medan-IndonesiaEneyew Tilahun BekeleDepartment of Applied Chemistry, Adama Science and Technology University, Adama, EthiopiaFekadu Gochole AgaDepartment of Materials Science and Engineering, Adama Science and Technology University, Adama, Ethiopia

2021en

ABI

Аннотация

Abstract Nowadays, water pollution is a major concern to the globe. For this reason, various research works has been done to access pure water thereby minimizing the effect of pollutants. In this work, the cobalt doped ZnO (Co-doped ZnO) via the accumulation of cobalt ion onto Eichhornia crassipes plant tissue for different days and combined with zinc precursor was synthesized. The resulting catalyst powder samples were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), X-Ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FE-SEM), and Ultraviolet–vis (UV–vis) spectroscopy, and microwave plasma atomic emission spectrometer (MP-AES). The catalysts were also tested for the photocatalytic degradation of methylene blue (MB) in the presence of H 2 O 2 under visible light irradiation. The best catalytic activity was gained by the 8th-days accumulation of cobalt ion onto the Eichhornia crassipes plant tissue and 99.6% of the dye was degraded within 45 min. However, 69.6, 65.7, 73.6, and 94.8% of MB dye was degraded by 1, 2, 4, and 6 days accumulations. Hence, removal of toxic heavy metal by using Eichhornia crassipes plant and recycling in the wastewater treatment gain is highly appreciated. Moreover, the Co-doped ZnO photocatalysts could enhance the photocatalytic activities due to suppressing of the electron and hole recombination and the porosity of the catalysts resulted from the Eichhornia crassipes plant after calcination.

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Идентификаторы

DOI: 10.1088/2053-1591/abe2d6

Цитирования и источники

Цитирований: 3Использованных источников: 0

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