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Activity and mechanism of macroporous carbon/nano-TiO2 composite photocatalyst for treatment of cyanide wastewater by Peize Li; Yali Zhang; Yaoguo Huang; Linlin Chen is a Materials Science article available to read on EtoBox.

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Photocatalytic oxidation can effectively treat cyanide wastewater generated from cyanide plating and gold cyanidation extraction process. In this study, monodisperse SiO2 microspheres were prepared by stober method, and macroporous carbon was prepared by template method with SiO2 as template and sucrose as carbon source, and the macroporous carbon/nano-TiO2 composite photocatalyst were prepared by solid-phase dispersion method. The material was characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD),UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS), photoluminescence (PL), energy spectrometry (EDS), N2 adsorption–desorption test, thermogravimetric analysis (TGA), Raman spectra, and X-ray photoelectron spectroscopy (XPS). The results show that the material has a large specific surface area, excellent pore structure, and light absorption properties. The photocatalytic treatment of cyanide wastewater was carried out by changing variables such as the loading amount of nano-TiO2, light wavelength, and catalyst dosage. The data showed that when the loading amount of nano-TiO2 was 15 wt% and the catalyst dosage was 3 g/L,

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Author

Peize Li; Yali Zhang; Yaoguo Huang; Linlin Chen

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Materials Science (Physical Sciences)