Cu₂O Nanoparticles: A Simple Synthesis, Characterization and Its Photocatalytic Performance toward Methylene Blue

Abstract

Cuprous oxide nanoparticles (Cu 2 O-NPs) were fabricated by a simple solution-phase reduction route with a one-step reduction method. The used original chemicals were the copper sulfate and the sodium sulfite. The physicochemical properties of Cu 2 O-NPs were investigated by different methods such as XRD, Raman, SEM, and UV-Vis spectra. The results show that the molar ratio of precursors ([CuSO 4 ]/[Na 2 SO 3 ]) not only affects crystal structure and morphology but also affects the crystallinity of crystals and optical characteristics of Cu 2 O-NPs samples. The photocatalytic activity of Cu 2 O-NPs was evaluated by the removal of methylene blue (MB) aqueous solution under visible light irradiation. The result shows that good photocatalytic activity with the MB degradation is higher than 98% under visible light irradiation for 40 minutes and the rate constant of 0.11281 min ¹1 .

Photocatalytic Degradation of Methylene Blue (MB) and Methyl Orange (MO) by the Highly Oxidative Properties of SnO₂–Sb₂O₃ Particles

“…These electrons oxidize organic pollutants 15,16) by producing free hydroxyl radicals (•OH) at higher concentration and faster by using UV light. 17) Photocatalyst materials have been used for environmental treatment 18,19) and, over recent decades, several inorganic semiconductors have been studied due to their high oxidative performance without requiring chemicals or high temperatures. 20) They have been used in photovoltaic and photodegradation of organic pollutants in air and water.…”

Engineering copper plasmonic chirality via ligand-induced dissolution for enantioselective recognition of amino acids

“… 50 Furthermore, Raman signals observed at 215, 500, and 640 cm −1 are associated with the second-order overtone mode 2Eu, Raman-allowed mode F 2g and Raman-allowed mode TO, respectively, for Cu 2 O. 51 …”

“…50 Furthermore, Raman signals observed at 215, 500, and 640 cm −1 are associated with the second-order overtone mode 2Eu, Raman-allowed mode F 2g and Raman-allowed mode TO, respectively, for Cu 2 O. 51 The optical properties of the synthesized CuNPs were analyzed using UV-visible and CD spectroscopy. The UV-visible spectra showed typical features in the region corresponding to the LSPR and interband transition of CuNPs: a broad absorption peak covering 500-800 nm with a shoulder at around 620 nm (Fig.…”

Facile synthesis Cu2O nanomaterials via hydrothermal method: Effect of precursors ratio on structural and morphological characteristics

“…Raw materials for the production of Cu2O are available in nature. The Cu2O fabricated processes are relatively simple and inexpensive [1][2][3][4][5][6][7]. Therefore, Cu2O is one of the fascinating semiconductor materials that is attracting attention in production and application research in many areas such as biosensors, gas sensors, lithium-ion batteries, optoelectronics, luminescence, photocatalysts for air purification, water purification by solar energy, etc.…”

“…Therefore, Cu2O is one of the fascinating semiconductor materials that is attracting attention in production and application research in many areas such as biosensors, gas sensors, lithium-ion batteries, optoelectronics, luminescence, photocatalysts for air purification, water purification by solar energy, etc. [4][5][6][7][8][9][10][11][12]. Research works have reported that Cu2O semiconductor nanomaterials in particular as well as semiconductor nanomaterials in general (ZnO, TiO2, etc.)…”