Turkish Journal of Chemistry
Abstract
The removal of color arising from water-soluble dyes in wastewaters is necessary to counter the threat to health. Because of thedifficulty in elimination of these dyes by conventional methods, their photodegradation using photosensitizers such as phthalocyanines(Pcs) has been employed recently. When compared to peripherally substituted derivatives, silicon Pcs are reported to be morebiocompatible with low toxicity. Thus a new silicon Pc substituted with two quaternized dimethylamino phenoxy units (compound 1)and its quaternized derivative (compound 2) were synthesized to test its photocatalytic ability employing the dyes methylene blue (MB),eosin B (EB), erythrosine (ERB), sulforhodamine B (SRB), and brilliant blue FCF (BRB), some of whose absorption bands overlap withthose of Pcs. The overlapped absorption bands were split using first-order derivative UV-vis spectra. The photodegradation rates ofBRB, MB, and ERB were 41%, 38%, and 29%, respectively, under 30-s short time irradiation in the presence of compound 2. The plotsof the natural logarithm of the concentrations of dyes versus time fit the first-order reaction model. According to the experimental data,compound 2 could be used as a photocatalyst due to singlet oxygen generation for photodegradation of pollutant dyes MB, ERB, andBRB with higher photodegradation rates.
DOI
10.55730/1300-0527.3715
Keywords
Phthalocyanines, dyes, photocatalysis, first-order UV-vis spectroscopy
First Page
118
Last Page
132
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
KAYA, DAMLA NUR and SESALAN, BEHİCE SEBNEM
(2025)
"A new water-soluble silicon phthalocyanine that catalyzes the photodegradation of pollutant dyes,"
Turkish Journal of Chemistry: Vol. 49:
No.
1, Article 10.
https://doi.org/10.55730/1300-0527.3715
Available at:
https://journals.tubitak.gov.tr/chem/vol49/iss1/10
