Abstract
The Co3O4/CN-x%CeO2 (x = 0, 3, 6) composites for enhanced photocatalytic degradation of formaldehyde (HCHO) performance were prepared by hydrothermal-calcination method. The structure, microstructure and surface functional groups of samples were investigated by using the X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy and Fourier transform infrared spectrometer, and the degradation mechanism of Co3O4/CN-3%CeO2 was also discussed this paper. The results showed that the Co3O4/CN-3%CeO2 sample could degrade 91.5% of HCHO within 9 h which was 190% higher than that of the CN, and maintained excellent performance for 24 h. The sample was in the form of irregular block-based flakes and particles, the specific surface area was 111.92 m2/g which was 2.5 times than that of the CN sample. The sample was composed of CN and Co3O4 phases, existed O–H, N–H, C=O, C–N, Co–O, Ce–O functional group and mesoporous structure with pore size distribution of 2 to 20 nm.
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Funding
This work was supported by the National Natural Science Foundation of China (No.21467002); Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection (Guangxi Normal University), Ministry of Education, China, (No. ERESEP2020Z13); Innovation Project of Guangxi Graduate Education (XYCSZ2020045).
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M.J. Yan contributed to conceptualization, methodology, formal analysis and writing original draft; Z.H. Lin contributed to conceptualization and investigation; H. Huang provided resources and software; H. Wang contributed to project administration and validation; M.W. Meng did supervision, writing—review & editing; Y.L. Liu was involved in investigation and formal analysis; Y.L Zhou performed visualization and software. All authors reviewed the manuscript.
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Yan, M., Lin, Z., Huang, H. et al. The Co3O4/CN-x%CeO2 (x = 0, 3, 6) composites for photocatalytic degradation of HCHO under visible-light irradiation: Performance and characterization. Res Chem Intermed 49, 1179–1196 (2023). https://doi.org/10.1007/s11164-022-04946-9
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DOI: https://doi.org/10.1007/s11164-022-04946-9