Cited by 380TiO2 Photocatalysis and Solar CellsAdvanced Photocatalysis TechniquesAdvanced oxidation water treatment

A novel TiO2/biochar composite catalysts for photocatalytic degradation of methyl orange

Lu, Lili, Shan, Rui, Shi, Yueyue, Wang, Shuxiao, Yuan, Haoran·2019·Chemosphere

Abstract

A series of TiO2/biochar composite catalysts were prepared by the hydrolysis method for the degradation of methyl orange, where biochar was obtained from the pyrolysis of waste walnut shells. The catalysts were examined by scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), photoluminescence spectroscopy (PL) and X-ray photoelectron spectroscopy (XPS), elemental analysis and ultra violet-visible diffuse reflectance spectroscopy (UV-vis DRS). The photocatalytic activity results showed that the catalysts noted as CT0.1/1, CT0.2/2 and CT 0.5/1 exhibited higher catalytic activity than that of pure TiO2. Besides, catalyst CT0.2/1 exhibited the highest catalytic activity (the decolorization efficiency of 96.88% and the mineralization efficiency of 83.23% were obtained), attributed to the synergistic effect of biochar and TiO2, while CT1/1 possessed the lowest activity due to the shelter of light by the excess biochar. After 5 repeated use, the catalyst CT0.2/1 still exhibited rather high activity toward the degradation of MO, where the decolorization efficiency and mineralization efficiency of MO achieved 92.45% and 76.56%, and the loss of activity was negligible.

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Crossref · 10.1016/j.chemosphere.2019.01.132

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  • Lu et al. prepared TiO2/biochar composite catalysts for photocatalytic degradation of methyl orange; an appropriate biochar ratio promoted the activity of TiO2 and increased decolorization and mineralization efficiency by 20.8% and 51.0%, respectively, compared to a TiO2 control group.

    “Similarly, a series of TiO2/biochar composite catalysts were prepared by Lu et al. for the photocatalytic degradation of methyl orange.Appropriate biochar ratio was found to promote the activity of TiO2 and increase decolorization and mineralization efficiency by 20.8% and 51.0%, respectively, as compared to TiO2 control group.61”

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Authors
Lu, L., Shan, R., Shi, Y., Wang, S., & Yuan, H.
Affiliations
Chinese Academy of Sciences (CN)
Corresponding author
Yuan, Haoran
Venue
Chemosphere
Publisher
Elsevier BV
Published
2019-05
Volume
222
Pages
391-398
ISSN
0045-6535 (ISSN-L)
OpenAlex
W2914721939
Cited by
380
References
46
Citations by year
2026: 33 · 2025: 45 · 2024: 70 · 2023: 51 · 2022: 64 · 2021: 54 · 2020: 41 · 2019: 22
FWCI
9.61
Type
journal article
Language
en
Open access
closed
Locations
  • Chemosphere (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repository of Guangzhou Institute of Energy Research, Chinese Academy of Sciences (submittedVersion)
Funders
  • National Natural Science Funds of China (51776211, 51676194)
  • Science and Technology Project of Guangdong Province, China (2017A010104008, 2017A010104021)
  • Funds of Guangdong Province, China (2016A010105017)
  • CAS Interdisciplinary Innovation Team
Topics
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › TiO2 Photocatalysis and Solar Cells
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Advanced Photocatalysis Techniques
  • Physical Sciences › Environmental Science › Water Science and Technology › Advanced oxidation water treatment
Keywords
photocatalytic degradation, methyl orange, biochar, hydrolysis synthesis, color removal, mineralization, catalyst reusability, synergistic effect, dye wastewater treatment
MeSH terms
Azo Compounds, Catalysis, Charcoal, Hydrolysis, Microscopy, Photolysis, Spectrum Analysis, Titanium, X-Ray Diffraction, Juglans

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