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Understanding Graphitic Carbon Nitride as Photocatalyst: A Case Study on Thermal Engineering of Physical and Chemical Features
Faculty of Physics, Semnan University, P.O. Box: 35195-363, Semnan, Iran.ORCID-id: 0000-0002-7585-1876
Faculty of Physics, Semnan University, P.O. Box: 35195-363, Semnan, Iran.
Faculty of Physics, Semnan University, P.O. Box: 35195-363, Semnan, Iran.
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap.ORCID-id: 0000-0001-7475-6394
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2024 (engelsk)Inngår i: Physica Status Solidi (a) applications and materials science, ISSN 1862-6300, E-ISSN 1862-6319, Vol. 221, nr 7, artikkel-id 2300844Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Rationalizing material features according to the adopted synthetic strategy, aiming then to tune them on demand, is among the most relevant purposes of investigation in materials science. Herein, the systematic analysis of the dependence of graphitic carbon nitride (g-C3N4) physical characteristics on the decomposition temperature of urea, rationalizing the impact of synthetic temperature on several characteristics of the materials (degree of N–H condensation, carbon vs nitrogen content, structural parameters, photoluminescence lifetime, surface area, pores volume), is discussed. g-C3N4 nanostructures are fabricated by thermal decomposition of urea at different temperatures under ambient atmosphere, obtaining an almost ideal stoichiometry (C/N = 0.72) when setting the temperature at 600 °C. The samples show structural, textural, compositional, and optical differences directly depending on the fabrication temperature: specific surface area, pore volume and size, intralayer distance, and speed of radiative recombination of photogenerated charges are proportionally enhanced by increasing the synthesis temperature. The role played by all the physicochemical features of the prepared samples in promoting the catalytic degradation of Rhodamine B is investigated, highlighting their synergistic role in enhancing the catalytic efficiency. Significant differences in the dye degradation are recorded when using either UV or solar simulated light, demonstrating that Rhodamine B photosensitization rules the process.

sted, utgiver, år, opplag, sider
John Wiley & Sons, 2024. Vol. 221, nr 7, artikkel-id 2300844
Emneord [en]
g-C3N4, intralayer distance, photocatalysis, photoluminescence lifetime, urea thermal decomposition
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URN: urn:nbn:se:ltu:diva-104513DOI: 10.1002/pssa.202300844Scopus ID: 2-s2.0-85185129668OAI: oai:DiVA.org:ltu-104513DiVA, id: diva2:1843079
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Validerad;2024;Nivå 2;2024-04-23 (joosat);

Full text license: CC BY-NC-ND

Tilgjengelig fra: 2024-03-07 Laget: 2024-03-07 Sist oppdatert: 2024-04-23bibliografisk kontrollert

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You, SujieConcina, Isabella

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