Photocatalytic 4-nitrophenol degradation and oxygen evolution reaction in CuO/g-C₃N₄ composites prepared by deep eutectic solvent-assisted chlorine doping

Abstract

Heterostructured Cl-CuO/g-C3N4 composite for OER and photocatalytic 4-nitrophenol degradation.

Deep Eutectic Solvent‐Assisted Synthesis of Ternary Heterojunctions for the Oxygen Evolution Reaction and Photocatalysis

“…The intensities of the spectra are directly related to the recombination of the electron–hole pairs in the material, as shown in Figure S2 in the Supporting Information. The g‐CN has a highly evident peak at 430–460 nm, which is well corroborated with previous literature . No emission peak was detected for BiOCl (3.4–3.5 eV) because of insufficient excitation energy, and the two emission peaks observed at 485 and 528 nm were attributed to BiVO 4 .…”

“…As shown in Figure c, the absorption edges of pure BOC/BVO and g‐CN are located at approximately 520 and 450 nm, which is in agreement with relative values . As shown in Figure b, the band‐gap energies for BOC/BVO/g‐CN‐15 and g‐CN were determined to be 2.39 and 2.79 eV, respectively, indicating BOC/BVO/g‐CN‐15 has the narrower band‐gap energy.…”

“…In this method, the sensitivity of the electric current response to the applied potential is analyzed, which provides information associated with the rate‐determining steps. The Tafel plots are fitted with the equation η = b log j + a , in which j is the current density, a and b are Tafel equation constants, and η is the reaction overpotential . The Tafel slope was derived from LSV at a current density of 10 mA cm −2 for BOC/BVO/g‐CN (1:0.15 weight ratio of BOC/BVO to g‐CN) (195 mV dec −1 in the dark and 146 mV dec −1 in light), which has the lowest values compared with the other ternary heterojunction photocatalysts and BOC/BVO.…”

Facile thermal exfoliation of Cu sheets towards the CuO/Cu2O heterojunction: a cost-effective photocatalyst with visible-light response for promising sustainable applications

“…In addition, the lattices measured from the selected areas illustrate the spacings of 0.16 nm and 0.25 nm, corresponding to the (202) lattice facet of monoclinic CuO and the (111) lattice plane of cubic Cu 2 O. 35,36 In addition to this, the selected area electron diffraction (SAED) pattern of CuO/Cu 2 O-3 was obtained, as shown in…”

CuFe2O4@CuO: A Magnetic Composite Synthesized by Ultrasound Irradiation and Degradation of Methylene Blue on Its Surface in the Presence of Sunlight

“…Copper oxide nanoparticles have been attracted many reseachers to use in various filds, partiulaly catalytic applications, because of having appealing properites like non-toxicity compound, chemical stability, electrochemical activity, etc. Multiply morphologies and sizes of CuO nanoparticles have been synthesized by using different synthetic ways such as thermal evaporation, thermal decomposition, thermal oxidation, electrospinning, solid-liquid arc discharge processes, chemical vapor deposition, sol-gel method, etc [13] In this context, a magnetic composite (CuFe2O4@CuO) was prepared via ultrasound irradiation in the presence ammonia solution and ethylene glycol. Also, we report on the photocatalytic degradation of methylene blue (MB) over CuFe2O4@CuO hetrojunctions under visible light irradiation…”