Strontium oxide modified mesoporous graphitic carbon nitride/titanium dioxide nanocomposites (SrO-mpg-CN/TiO2) as efficient heterojunction photocatalysts for the degradation of tetracycline in water

Boosting Tetracycline Degradation with an S-Scheme Heterojunction of N-Doped Carbon Quantum Dots-Decorated TiO2

“…[TC]/[trap] ratio was 1:1. KI, Na 2 SO 4 , EDTA-Na 2 , isopropyl alcohol (IPA), and benzoquinone (ρ-BQ) are served as the scavengers of free and surface OH • radical, h + , and OH • radical, h + , free OH • radical and h + , O 2 •– (superoxide) radical, respectively, ,,− and the results are illustrated in Figure e. As seen in Figure e, at the irradiation time of 120 min, the percent TC degradation was reduced from 97.73 to 81.83, 76.85, 72.81, 68.93, and 58.36% in the presence of KI, IPA, Na 2 SO 4 , EDTA, and BQ, respectively.…”

“…Building upon our prior studies , on the photodegradation mechanism pathway analysis of TC, plausible mechanisms have been proposed to elucidate the photodegradation process. It has been confirmed that no intermediates with aromatic structures persist in the final products of TC photodegradation; instead, they undergo breakdown into minuscule, undetectable molecules such as H 2 O, CO 2 , NH 3 , and similar species.…”

“…For this reason, this issue has recently become an important research topic that scientists have been working on intensely. There are several established treatment techniques, such as biological, physical, and chemical processes, that are widely applied to remove antibiotics from wastewater, but traditional treatment techniques are not effective in TC removal due to their low variability and biodegradability. , Semiconductor-based photocatalytic oxidation is a green and sustainable technology with characteristics of strong oxidation activity, low energy consumption, operability at room temperature, and ambient pressure, which is used to remove TC and other organic contaminants in water. ,, In a photocatalytic oxidation process, parameters such as the harvesting of sunlight in the UV–vis–NIR range, good separation, and transport of the photoproduced e – /h + pairs, and the construction of active reaction centers on the surface for redox reactions play a critical role . In this context, the development of an efficient photocatalytic oxidation process with the design of a photocatalyst with high activity, simple and inexpensive preparation, convincing electron–hole separation, and addition to prepared from natural sources for a sustainable environment is a very important task.…”

Green synthesis of SrO nanoparticles using leaf extract of Albizia julibrissin and its recyclable photocatalytic activity: an eco-friendly approach for treatment of industrial wastewater

“…The intense peaks located at 814 cm −1 and 736 cm −1 indicate the bending vibrations of the metal–oxygen bond which shows the formation of Sr–O. 41 A band at 1400–1000 cm −1 corresponds to methylene groups of proteins present in plant extract. 36 The bands positioned at 1435 and 1344 cm −1 reveal the presence of the metabolites and biomolecules of the Albizia julibrissin plant extract.…”

Construction of high-performance g-C3N4-based photo-Fenton catalysts by ferrate-induced defect engineering

“…1 However, water resource pollution caused by the inappropriate and extensive use of various antibiotics and other pollutants threatens living beings and constitutes a significant part of the environmental problems. 2,3 Compared with other antibiotics, tetracycline (TC) is highly persistent and undegradable in the environment. More importantly, the presence of TC residues will decrease the quality of drinking water and pose long-term potential risks to the ecosystem and human health.…”