Dy2Cu2O5 nanostructures: Sonochemical fabrication, characterization, and investigation of photocatalytic ability for elimination of organic contaminants

• Published in: Journal of molecular liquids Vol. 344; p. 117883
• Main Authors: Milad Tabatabaeinejad, Seyed, Amiri, Omid, Ghanbari, Mojgan, Salavati-Niasari, Masoud
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.12.2021
• Subjects: Photodegradation; Rare earth-copper double oxides; Sonochemistry; Textile dyes; Wastewater; Photodegradation; Textile dyes; Rare earth-copper double oxides; Sonochemistry; Wastewater
• ISSN: 0167-7322; 1873-3166
• DOI: 10.1016/j.molliq.2021.117883

[Display omitted] •The low cost sonochemical method used to fabricate Dy2Cu2O5 nanostructures.•Investigation of several conditions on purity, structure, size, and morphology of the product.•Photocatalytic activity investigated through different organic coloring agents.•Degradation of phenol red about 96.4% using Dy2Cu2O5 nanostructures.•O2− performed the major role in phenol red degradation. Economical elimination of organic contamination from sewage has become an enthusiastic study subject owing to its environmental and ecological significance. Conventional water purification techniques, including adsorption, membrane separation, and coagulation, suffer from great operating expenses and even produce secondary contaminations. Photocatalysis on semiconductor photocatalysts has exhibited efficacy in decomposing a wide variety of organic compounds into less poisonous organic mixtures or biodegradable compounds, along with inorganic H2O, PO43−, CO2, NO3−, and halide ions. Therefore, Dy2Cu2O5 nanostructures have been synthesized through the uncomplicated and affordable sonochemical approach. The effect of sonication power and time was investigated on the particle size, morphology, and shape of products. Dy2Cu2O5 nanostructures possess a suitable bandgap (3.2 eV) in the UV area. The photocatalytic ability of Dy2Cu2O5 was surveyed for the elimination of various organic colorants below UV and visible radiation and exposed that this compound could decolorize and remove 96.4 % of phenol red. Moreover, the possible reaction rate coefficient (k) of dyes was determined relying on the Langmuir–Hinshelwood reaction, showing that maximum photocatalytic performance was achieved in a larger reaction rate constant (k = 0.029 min−1).