Post-synthetic modification of graphitic carbon nitride with PCl3 and POCl3 for enhanced photocatalytic degradation of organic compounds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F22%3A00564314" target="_blank" >RIV/67985858:_____/22:00564314 - isvavai.cz</a>

Alternative codes found

RIV/61989100:27360/22:10250394 RIV/61989100:27710/22:10250394 RIV/61989100:27730/22:10250394

Result on the web

<a href="https://hdl.handle.net/11104/0336162" target="_blank" >https://hdl.handle.net/11104/0336162</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.diamond.2022.109439" target="_blank" >10.1016/j.diamond.2022.109439</a>

Result language

angličtina

Original language name

Post-synthetic modification of graphitic carbon nitride with PCl3 and POCl3 for enhanced photocatalytic degradation of organic compounds

Original language description

Graphitic carbon nitride (g-C3N4) was synthesised from melamine at 550 degrees C in the air for a period of 4 h. As such prepared g-C3N4 was dispersed in PCl3 and POCl3 with and without pyridine at an ambient temperature for us to dope g-C3N4 with phosphorus. The bulk structural properties of g-C3N4 examined by X-ray diffraction (XRD) and Fourier transformed infrared (FTIR) spectroscopy were not changed. On the contrary, a surface modification in terms of pore size distribution studied using physisorption of nitrogen and electron microscopy was observed. Using PCl3 (in the presence of pyridine), nitrogen vacancies were filled with phosphorus and phosphoramidate groups were formed (with and without pyridine). When POCl3 was used nitrogen vacancies were removed and the surface structure was rearranged, but no phosphorus was doped in g-C3N4. The band gap energies varied from 2.69 to 2.73 eV and specific surface areas varied from 8 to 11 m2 g-1.The g-C3N4 surface structure rearrangement was associated with altered electronic properties which led to higher photocatalytic activity observed by the degradation of Ofloxacin, Amoxicillin and Rhodamine B (RhB) under LED irradiation of 420 nm. A degradation efficiency decreased in the order: Ofloxacin > RhB > Amoxi-cillin. Superoxide radicals were found to be able to react with all the organic compounds, but holes could react only with Ofloxacin and RhB. All the modified materials were more active than the pristine g-C3N4 and the best photocatalyst was prepared through the reaction with PCl3 in the presence of pyridine.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Diamond and Related Materials

ISSN

0925-9635

e-ISSN

1879-0062

Volume of the periodical

130

Issue of the periodical within the volume

DEC 2022

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

109439

UT code for WoS article

000880001100003

EID of the result in the Scopus database

2-s2.0-85139844247