In-situ generation Cu2O/CuO core-shell heterostructure based on copper oxide nanowires with enhanced visible-light photocatalytic antibacterial activity was written by Han, Lu;Zhan, Weiting;Liang, Xu;Zhang, Wei;Huang, Ruibin;Chen, Rongsheng;Ni, Hongwei. And the article was included in Ceramics International in 2022.COA of Formula: CuH2O2 This article mentions the following:
As visible light-driven photocatalysts in wastewater treatment, Cu2O/CuO composites have garnered considerable attention. Herein, Cu2O/CuO core-shell nanowires were fabricated directly on a Cu mesh using a simple two-step synthesis process involving a wet chem. method and rapid annealing. Unlike conventional composite nanowires, controllable core-shell nanowires exhibit high photoelectrochem. properties and overcome the problems associated with the recovery of powder-based photocatalysts. The presence and structural distribution of the Cu2O/CuO core-shell nanowires were confirmed using X-ray diffraction, XPS and transmission electron microscopy. Among the samples subjected to different rapid annealing temperatures for 180 s, the sample exposed to rapid annealing at 350°C achieved the highest photocurrent d. of -6.96 mA cm-2. In the core-shell nanowires fabricated on the samples, the ratio of Cu2O/CuO was 1:1. The photocatalytic activity of the Cu2O/CuO nanowire samples was also determined by measuring methyl blue degradation to determine their applicability in wastewater treatment. A remarkable photocatalytic degradation rate of 91.6% was achieved at a loading bias voltage of -0.5 V. The Cu2O/CuO heterojunction enhanced the photodegradation of the samples because the different bandgaps improved the dissociation of the photogenerated electron-hole pairs. Furthermore, the antibacterial activity of the Cu2O/CuO nanowires exhibited considerable resistance against Escherichia coli and photocatalytic antibacterial treatment for only 20 min under visible light killed 106 CFU/mL of E. coli. Therefore, the Cu2O/CuO controllable core-shell nanowires with a high photodegradation performance and excellent antibacterial activity under general illumination show diverse applications in water treatment. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2COA of Formula: CuH2O2).
Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Transition metal-catalyzed chemical transformation of organic electrophiles and organometallic reagents belong to the most important cross-coupling reaction in organic synthesis. Copper of different valence states can be used to catalyze the coupling reaction, especially the Ullmann coupling reaction. COA of Formula: CuH2O2
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”