Библиографическое описание:Study on the performance and structure of low graphitized biochar prepared by silica template method for adsorbing odorous gases : научное издание / R. Wang, F. Li, H. Yan [et al.]. - Текст : непосредственный // Journal of Analytical and Applied Pyrolysis. - 2026. - Т. 193, № . - P. 107411. - This work was supported by the National Natural Science Foundation of China Fund under Grant 22278100. - ISSN 0165-2370. - ISSN 1873-250X, DOI 10.1016/j.jaap.2025.107411.
Аннотация:Research on the removal of sulfur-containing malodorous gases from air via biochar adsorption demonstrates significant application potential. In this study, silicon-modified graphitized carbon was synthesized through pyrolysis using peanut shells, rice husks, and walnut shells as precursors. Among the resulting materials, rice husk-derived biochar (DK-700–5) and walnut shell-derived biochar (HT-800–10) exhibited pronounced targeted adsorption toward CH₃SH and H₂S, respectively. The sulfur adsorption capacity of DK-700–5 was 8.3 times higher than that of unmodified rice husk biochar, while HT-800–10 achieved a 2.45-fold enhancement in H₂S adsorption compared to its unmodified counterpart. Carboxyl and oxygen vacancies on DK-700–5 were identified as critical for CH₃SH adsorption, facilitating its immobilization and gradual oxidation to sulfate (SO₄²⁻), with intermediate sulfur species such as R–SO–R, S⁰, and C–S detected. In parallel, HT-800–10 adsorbed and oxidized H₂S through its porous structure and surface superoxide radicals, converting it into elemental sulfur (S⁰) and sulfate (SO₄²⁻), thereby achieving efficient adsorption and oxidative transformation.
Издательство:Elsevier Science Publishing Company, Inc.
Источник:Journal of Analytical and Applied Pyrolysis
Выпуск:Т. 193
Номера страниц:107411
Держатель оригинала документа:FRC “Krasnoyarsk Science Center SB RAS”, Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, School of Materials Science and Chemical Engineering, Harbin University of Science and Technology
Количество экземпляров:
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