Investigation of catalytic and fuel additive applications of copper/copper(I) oxide/copper(II) oxide (Cu/CuO/Cu₂O) microspheres synthesized by hydrothermal method using sucrose as template

Abstract

Role of sucrose in sequential reduction of copper (II) ions is investigated. Copper/copper(I) oxide/ copper(II) oxide (Cu/CuO/Cu 2 O) microspheres are synthesized via hydrothermal method using sucrose as template. Size of microparticles lies in 9-16 μm range. Formation mechanism of spherical architecture is also proposed. Synthesized spheres are used in two major applications: (i) catalyst for degradation of methyl red (MR) and methyl blue (MB) (ii) fuel additive in commercial diesel. The rate constant of degradation of both dyes (MB and MR) is not found equal under similar conditions. Results indicated that increased concentrations of microparticles in diesel significantly affect properties.

Alternative Local Melting‐Solidification of Suspended Nanoparticles for Heterostructure Formation Enabled by Pulsed Laser Irradiation

“…As the most effective catalysts, Cu100/C and Cu200/C were investigated by in situ FTIR to reveal the products of ethanol oxidation (Figure 7c,d). The IRRAS spectral peaks corresponding to CO 2 (complete oxidation), CO, CH 3 CHO, and CH 3 COOH (partial oxidation) [81,82] are at 2360, 2100, 1340, and 1280 cm −1 , respectively (Figure S28, Supporting Information). The highest absorption was observed for CO 2 and the ratio of CO 2 /CO was measured to be 43 and 1400 for Cu200/C and Cu100/C catalysts, respectively (Figure 7c,d and Table S15, Supporting Information).…”

New Insights into Cu/Cu2O/CuO Nanocomposite Heterojunction Facilitating Photocatalytic Generation of Green Fuel and Detoxification of Organic Pollutants

“…12 Copper oxide has a variety of oxidation states, including Cu(0), Cu(I), and Cu(II), which allow for a variety of reactions. A variety of morphologies of Cu/Cu 2 O/CuO nanocomposites, including nanoparticles (NPs), nanodisks, nanosponges, microspheres, films, and so forth., are synthesized by hydrothermal, 13 exploding wire technique 14 and other methods. Cuprous oxide (Cu 2 O) and cupric oxide (CuO) are the two fundamental types of copper oxide.…”

“…27 Moreover, RhB dye was degraded using the Cu/Cu 2 O/CuO heterojunction net and sheet, 28,29 MB dye was degraded by the Cu/Cu 2 O− CuO film and powder, 30,31 and Cu/Cu 2 O/CuO microparticles were used to degrade both methyl red (MR) and MB dyes. 13 In this study, a simple wet chemical procedure was used to synthesize Cu/Cu 2 O/CuO nanocomposites. With the aid of NiO (co-catalyst) and MeOH (sacrificial agents), the produced nanocomposite serves as a photocatalyst for hydrogen production by water splitting.…”

“…Li et al used the Cu/Cu 2 O/CuO powder for photocatalytic degradation of RhB dye in less than 120 min . Moreover, RhB dye was degraded using the Cu/Cu 2 O/CuO heterojunction net and sheet, , MB dye was degraded by the Cu/Cu 2 O–CuO film and powder, , and Cu/Cu 2 O/CuO microparticles were used to degrade both methyl red (MR) and MB dyes …”

Recent advances in synthesis and characterization of iron–nickel bimetallic nanoparticles and their applications as photo-catalyst and fuel additive

“…Specically, the study focuses on synthesizing bi-metallic particles and utilizing straightforward and innovative techniques to enhance the optical, electrical, and mechanical properties of the resulting products. 44,45 The bottom-up approach utilized for synthesizing iron-nickel bimetallic nanoparticles involved a systematic procedure that started with high-purity iron and nickel precursors. 46 These precursors, such as iron chloride (FeCl 3 ) and nickel chloride (NiCl 2 ), were dissolved in an organic solvent like ethylene glycol or oleylamine, along with the use of surfactants like oleic acid or polyvinylpyrrolidone (PVP) to prevent agglomeration and control particle size.…”