期刊
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
卷 101, 期 2, 页码 453-467出版社
SPRINGER
DOI: 10.1007/s10971-021-05716-6
关键词
SnO2-ZrO2; Sol-gel; Photocatalysts; Phenol degradation; SiO2
New tertiary Si-Sn-Zr oxide photocatalysts with different silica doping ratios were synthesized using (CTAB) surfactant-assisted sol-gel auto-combustion route. Characterization study revealed that silica doping increased the specific surface area, mesoporous structure, and band gap values of the catalyst, leading to enhanced photocatalytic activity for phenol degradation.
By using (CTAB) surfactant-assisted sol-gel auto-combustion route, new tertiary Si-Sn-Zr oxide photocatalysts with different portion of silica as a dopant were synthesized. Characterization study was done with the cooperation of XRD, TEM, SEM, EDX, UV-Vis/DR spectroscopy and N-2-adsoprtion-desorption analysis. The obtained data revealed that doping of the prepared catalyst with silica accompanied with the appearance of SnO2, SiO2 and ZrO2 phases, significantly increased the S-BET, led to a preferable textural behaviors with meso-pores structure, the formation of a core-shell like structure, and increasing in the band gap (E-g) values. Additionally, all samples showed photocatalytic activities towards degradation of phenol, however, the sample treated with 0.15 mol % SiO2 showed the highest conversion (88%) at the lowest degradation time compared to previous studies and can be regenerated two times. The kinetic and the mechanism efficiency of the photodegradation process were proposed. [GRAPHICS] .
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