Design and Fabrication of TiO2/Lignocellulosic Carbon Materials: Relevance of Low-temperature Sonocrystallization to Photocatalysts Performance

Pawel Lisowski, Juan Carlos Colmenares, Ondřej Mašek, Wojciech Lisowski, Dmytro Lisovytskiy, Justyna Grzonka, Krzysztof Kurzydłowski

Research output: Contribution to journalArticlepeer-review


We present a facile and green approach to produce crystalline TiO2 nanoparticles on a surface of different carbonaceous materials derived from lignocellulosic biomass such as STARBON-800® obtained by carbonization at 800°C and biochar-SWP700 (Soft Wood Pellets (SWP) obtained by pyrolysis at 700°C) via novel low-temperature ultrasound-promoted green methodology coupled with citric acid as a cross-linking agent. In comparison to other methods, the developed method has several significant benefits such as simplicity, great ability to get crystalline TiO2 particles (elimination of high-temperature treatment (material calcination at >300°C) needed in the conventional sol-gel method, which is extremely important in transforming amorphous TiO2 into a photoactive crystalline phase) elimination of risky chemicals and oxidizing agent, and also ability to change some parameters (e.g. ultrasound intensity). Prepared materials were characterized by XRD, DR UV-vis, N2 physisorption, HR-XPS, XRF, HR-TEM, FT-IR and subsequently tested for their photocatalytic activities both in photocatalytic phenol degradation (in water) and oxidation of methanol (in air) under UV and visible light irradiation.

Original languageEnglish
Publication statusPublished - 30 Aug 2018


  • Citric acid
  • Lignocellulosic biomass
  • TiO
  • Ultrasound assisted sol-gel method
  • Water and Air purification

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