Effects of ultraviolet irradiation and titanium(IV) oxide on greywater and domestic wastewater with a low propensity for bio-disintegration

Spychała, Marcin; Błażejewski, R.; Młynarczyk, Dariusz T.; Musiał, Joanna; Krakowiak, Rafał; Stanisz, Beata; Gośliński, Tomasz; Nguyễn, Hùng Thanh

doi:10.5004/dwt.2021.27891

Cited by 1 publication

(2 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among others, titanium(IV) oxide has been widely considered a potential photocatalyst in the photodegradation of organic compounds as a component of hybrid systems, mineral or surface-functionalized carriers [ 16 , 17 , 18 ]. Its unique feature relies on the photoactivity after irradiation with UV light, which results in the potential application of titanium(IV) oxide in the advanced oxidation processes (AOP)—a new technique for the photodegradation of pollutants [ 19 , 20 , 21 , 22 ]. However, UV light represents approx.…”

Section: Introductionmentioning

confidence: 99%

“…4% of the solar radiation spectrum and, for this reason, the usefulness of TiO 2 is limited [ 23 ]. Some strategies of surface functionalization, such as doping with metals and non-metals, and coating with selected organic compounds, were executed to enhance the photocatalytic potential of titanium(IV) oxide and widen the light wavelength range towards visible light [ 21 , 22 , 23 ]. One of the most promising ideas is the surface modification of TiO 2 nanoparticles with porphyrazines.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Photocatalytic Activity of Sulfanyl Porphyrazine/Titanium Dioxide Nanocomposites in Degradation of Organic Pollutants

et al. 2022

View full text Add to dashboard Cite

Magnesium(II) sulfanyl porphyrazine with peripheral morpholinethoxy substituents was embedded on the surface of titanium(IV) dioxide nanoparticles. The obtained nanocomposites were characterized with the use of particle size and distribution (NTA analysis), electron microscopy (SEM), thermal analysis (TGA), FTIR–ATR spectroscopy, and X-ray powder diffraction (XRD). The measured particle size of the obtained material was 327.4 ± 15.5 nm. Analysis with XRD showed no visible changes in the crystallinity of the material after deposition of porphyrazine on the TiO2 surface. However, SEM images revealed noticeable changes in the morphology of the obtained hybrid material: higher aggregation and less ordered structure of the aggregates. The TGA analysis revealed the lost 3.6% (0.4 mg) of the mass of obtained material in the range 250–550 °C. In the FTIR–ATR analysis, C-H stretching vibratins in the range of 3000–2800 cm−1, originating from porphyrazine moieties, were detected. The photocatalytic applicability of the nanomaterial was assessed in photodegradation studies of methylene blue and bisphenol A as reference environmental pollutants. In addition, the photocatalytic degradation of carbamazepine with porphyrazine/TiO2 hybrids as photocatalysts was studied, accompanied by an HPLC chromatography assessment of photodegradation. In total, 43% of the initial concentration was achieved in the case of bisphenol A, after 4 h of irradiation, whereas 57% was achieved in the case of carbamazepine. In each photodegradation reaction, the activity of the obtained photocatalytic nanomaterial was proved with almost linear degradation. The photodegradation reaction rate constants were calculated, and revealed 5.75 × 10−5 s−1 for bisphenol A and 5.66 × 10−5 s−1 for carbamazepine.

show abstract