Characterization of nanoparticles of biochars from different biomass

Patryk Oleszczuk, Wiesława Ćwikła-Bundyra, Aleksandra Bogusz, Ewa Skwarek, Yong Sik Ok

Research output: Contribution to journalArticlepeer-review

99 Citations (Scopus)


The research on biochar is focused primarily on the estimation of biochar as a "macro" fraction, and not much attention is devoted to its fractions with finer particles. The aim of the study was to characterize the physicochemical properties of biochar nanoparticles (biochar-NPs). The properties of the biochar-NPs were also compared to the properties of initial biochars. The results of this study indicate that the properties of biochar-NPs differ from the properties of their macro-counterparts. The differences were observed in the pH, cation exchange capacity, content of particular elements, and aromaticity/polarity not only based on the type of biochars, but also the regularities in the differences between their macro- and nano-forms. The nano-biochars had a larger surface area and smaller pore sizes than the corresponding macro-biochars and were characterized by a higher negative zeta potential and greater diversity of crystalline forms than the macro-biochar. Moreover, nano-biochar had significantly lower levels of C, H, and N compared to macro biochars.

Original languageEnglish
Pages (from-to)165-172
Number of pages8
JournalJournal of Analytical and Applied Pyrolysis
Publication statusPublished - 2016 Sept 1
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.


  • Biochar
  • Black carbon
  • Charcoal
  • Nanomaterial
  • Nanoparticle

ASJC Scopus subject areas

  • Analytical Chemistry
  • Fuel Technology


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