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Browsing by Author "Hemmati-Eslamlu, Paria"

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    Article
    Anchoring Modified G-C3n4 With Bi5o7br: S-Scheme Photocatalysts With Boosted Activities in Elimination of Inorganic and Organic Pollutants
    (Elsevier, 2023) Jalalat, Zahra; Habibi-Yangjeh, Aziz; Hemmati-Eslamlu, Paria; Akinay, Yuksel
    In this research, modified g-C3N4 with hydrogen peroxide was decorated with Bi5O7Br nanoparticles (abbreviated as g-C3N4(M)/Bi5O7Br) via a facile precipitation procedure. The s-scheme g-C3N4(M)/Bi5O7Br (20 %) nanocomposite showed superior photocatalytic ability in degradation to tetracycline (TC), as a pharmaceutical pollutant, upon visible light. The maximal removal constant was 34.3 and 6.83-folds premier than g-C3N4 and g-C3N4 (M) systems, respectively. Interestingly, the g-C3N4(M)/Bi5O7Br (20 %) nanocomposite demonstrated excellent activity in visible-light elimination of amoxicillin (AMX) (an antibiotic), methyl orange (an anionic pollutant), rhodamine B and Fuchsine (cationic pollutants), and also photoconversion of Cr (VI) into Cr (III) upon visible light, that was about 15.5, 18.9, 22.4, 21.7, and 23.2-folds preferable than that of g-C3N4, respectively. The spectrophotometric, photoluminescence, and electrochemical studies approved the production of more charges upon visible light, and promoted segregation/movement of the generated charges within the binary g-C3N4(M)/Bi5O7Br (20 %) photocatalyst. The impressive segregation of charges was assigned to developing an s-scheme structure between Bi5O7Br and g-C3N4 (M) semiconductors. Scavenging tests revealed that superoxide anion radicals, holes, and hydroxide radicals were crucial species in the reactions. Eventually, the biocompatibility of the treated solution was confirmed via the successful growth of wheat seeds. In conclusion, the s-scheme g-C3N4(M)/Bi5O7Br system can be used as a suitable sample for environmental detoxification.
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    Article
    Novel G-C3n4 Nanorods/Cu3bis3 Nanocomposites: Outstanding Photocatalysts With P-N Heterojunction for Impressively Detoxification of Water Under Visible Light
    (Elsevier Science Sa, 2023) Hemmati-Eslamlu, Paria; Habibi-Yangjeh, Aziz; Akinay, Yuksel; Cetin, Tayfun
    Novel g-C3N4 nanorods/Cu3BiS3 (abbreviated as R-GCN/Cu3BiS3) nanocomposites were fabricated via a facile hydrothermal procedure, and they were used for the removal of tetracycline (TC), amoxicillin (AMX), methyl orange (MO), rhodamine B (RhB), and Cr (VI) upon visible light. The XRD, EDX, XPS, and FTIR analyses affirmed anchoring Cu3BiS3 nanoparticles over the R-GCN component. An utmost amount of TC removal was gained when 30 wt% of Cu3BiS3 was anchored on R-GCN. The photoactivity of R-GCN/Cu3BiS3 (30%) nanocomposite for the removal of TC was 62.5 and 5.41-folds premier than GCN and T-GCN photocatalysts, respectively. The R-GCN/ Cu3BiS3 (30%) nanocomposite demonstrated significant activity even after four cycles of application. The anchored Cu3BiS3 component not only improved the extent of visible-light absorption, but also facilitated segregation and migration of charges, which were confirmed by UV-vis DRS, PL, EIS, and photocurrent analyses. Regarding the facile fabrication procedure, and outstanding activity, this research can be a good reference for construction of GCN-based visible-light-induced photocatalysts for treatment of various contaminants in wastewaters.