| Title | Comparative study of Ti-alkaline biochar and Ti-acidic biochar photo catalysts for degradation of methyl orange |
|---|---|
| ID_Doc | 8312 |
| Authors | Huang, HL; Huang, ZH; Zhou, WJ |
| Title | Comparative study of Ti-alkaline biochar and Ti-acidic biochar photo catalysts for degradation of methyl orange |
| Year | 2023 |
| Published | Clean Technologies And Environmental Policy, 25.0, 3 |
| Abstract | The photocatalytic degradation of dyes that are mutagen and carcinogen in humans can be applied in the advanced oxidation process. In a circular economy, the biochar derived from wood waste via pyrolysis can be used to improve photocatalyst activities and reduce costs. The biochar with pH 9.7 was comprised of titanium species named Ti-alkaline biochar. By a simple way of acidification, the acidic biochar with pH 3.66 was also comprised of titanium species named Ti-acidic biochar. Using X-ray powder diffraction (XRD), the anatase TiO2 nanoparticles were synthesized in Ti-alkaline biochar and Ti-acidic biochar via the solvothermal method at a low temperature (453 K). During the degradation of methyl orange, the by-products were barely observed when Ti-acidic biochar was used as a photocatalyst under UV light at 254 nm. Via X-ray photoelectron spectroscopy (XPS), the formation of C-Ti in Ti-acidic biochar played an important role in the enhanced and complete degradation of methyl orange without the by-product formation. This work has implications in that Ti-acidic biochar is a suitable photocatalyst for the degradation of dyes under UV light. |
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