Dual Functionality of TiO 2 /Biochar Hybrid Materials: Photocatalytic Phenol Degradation in the Liquid Phase and Selective Oxidation of Methanol in the Gas Phase
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A series of new inorganic–organic hybrid materials based on TiO 2 and new biochar-based supports (biochar obtained by pyrolysis of miscanthus straw pellets (MSP) and soft wood pellets (SWP) at 550 and 700 °C) were successfully prepared using ultrasound-assisted methodology. The resulting composites were characterized by a wide range physicochemical techniques and investigated in water and gas-phase photocatalytic test reactions. Our best composite (TiO 2 /SWP700) achieved phenol degradation of 64.1% (under UV light) and 33.6% (under visible light). In addition, it also showed an extraordinarily high activity (∼90%) in selective oxidation of methanol to methyl formate in flow gas phase, high selectivity to methyl formate (∼80%), and high yield of methyl formate (∼88%) after 240 min of illumination. It can be noticed that when TiO 2 is supported on biochar it presented a superior photocatalytic ability and could be recycled at least 5 times in both photocatalytic runs tests with reproducible high photocatalytic efficiency.
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TiO2-biochar prepared by ultrasound-assisted methodology achieved phenol degradation rates of 64.1% with UV and 33.6% with visible light, much higher than original biochar with UV and visible light (less than 6%).
“The degradation rate of phenol by TiO 2 -BC coupled with UV reached 64.1% and 33.6%, respectively, which was much higher than that by original BC with UV and visible light (less than 6%).”
From Review of organic and inorganic pollutants removal by biochar and biochar-based composites (2021) · cites this paper as Lisowski et al. (2017)
Ultrasound-assisted methodology significantly affected the physicochemical properties of biochar; TiO2-biochar surface area increased from 254 to 399 m2/g and was 65% larger than TiO2-biochar prepared by ordinary methods.
“The TiO 2 -BC surface area increased from 254 to 399 m 2 /g and was 65% larger than the TiO 2 -BC prepared by ordinary methods.”
From Review of organic and inorganic pollutants removal by biochar and biochar-based composites (2021) · cites this paper as Lisowski et al. (2017)
TiO2 and biochar combination effectively improved service life in the presence of ultrasound, with loss of reactivity only about 10% after 5 cycles.
“Furthermore, the TiO 2 and BC combination effectively improved the service life in the presence of ultrasound, and the loss of reactivity was only about 10% after 5 cycles.”
From Review of organic and inorganic pollutants removal by biochar and biochar-based composites (2021) · cites this paper as Lisowski et al. (2017)
Biochar-supported TiO2 can act as electrodes and as water splitting during hydrogen production.
“Moreover, they claimed that the biocharsupported TiO 2 can act also as electrodes as well as it can act as the water splitting during hydrogen production.”
From Mechanisms and adsorption capacities of biochar for the removal of organic and inorganic pollutants from industrial wastewater (2021) · cites this paper as Lisowski et al. (2017)
The mineralization of methanol by softwood pellets-TiO2 is due to generation of highly reactive species such as OH, O2-, and h+.
“due to the generation of highly reactive species such as OH and O 2 -and h + as shown in Fig.5.”
From Mechanisms and adsorption capacities of biochar for the removal of organic and inorganic pollutants from industrial wastewater (2021) · cites this paper as Lisowski et al. (2017)
A reactor loaded with softwood pellets-TiO2 significantly mineralizes methanol into methyl formate and carbon dioxide.
“According to Lisowski etal. (2017), a reactor loaded with softwood pellets-TiO 2 significantly mineralized methanol into methyl formate and carbon dioxide”
From Mechanisms and adsorption capacities of biochar for the removal of organic and inorganic pollutants from industrial wastewater (2021) · cites this paper as Lisowski et al. (2017)
Lisowski et al. reported a superior photocatalytic ability of TiO2/biochar with reproducible high photocatalytic efficiency.
“Lisowski et al. also reported the a superior photocatalytic ability of TiO2/biochar with reproducible high photocatalytic efficiency.141”
From Sustainable remediation with an electroactive biochar system: mechanisms and perspectives (2020) · cites this paper as [141]
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- Authors
- Lisowski, P., Colmenares, J. C., Mašek, O., Lisowski, W., Lisovytskiy, D., Kamińska, A., & Łomot, D.
- Affiliations
- Institute of Physical Chemistry (PL)
- University of Edinburgh (GB)
- Corresponding author
- Lisowski, Paweł
- Colmenares, Juan Carlos
- ORCID
- Venue
- ACS Sustainable Chemistry & Engineering
- Publisher
- American Chemical Society (ACS)
- Published
- 2017-06-08
- Volume
- 5
- Issue
- 7
- Pages
- 6274-6287
- ISSN
- 2168-0485 (ISSN-L)
- OpenAlex
- W2618434698
- Cited by
- 179
- References
- 73
- Citations by year
- 2026: 9 · 2025: 17 · 2024: 28 · 2023: 20 · 2022: 22 · 2021: 26 · 2020: 25 · 2019: 18 · 2018: 13 · 2017: 1
- FWCI
- 4.18
- Type
- journal article
- Language
- en
- Open access
- green
- hdl.handle.net
- Licence
- other-oa
- Locations
- ACS Sustainable Chemistry & Engineering (publishedVersion)
- Edinburgh Research Explorer (University of Edinburgh) (submittedVersion, other-oa)
- Funders
- Narodowe Centrum Nauki (2015/17/N/ST5/03330)
- 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
- photocatalysis, phenol degradation, methyl formate, biochar support, pyrolysis, sonochemical synthesis, visible light photocatalysis, photocatalyst reusability, organic-inorganic hybrid materials
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