Antibacterial polyvinyl alcohol nanofiltration membrane incorporated with Cu(OH)2 nanowires for dye/salt wastewater treatment was written by Chen, Yingdong;Sun, Rongze;Yan, Wentao;Wu, Mengyao;Zhou, Yong;Gao, CongJie. And the article was included in Science of the Total Environment in 2022.Synthetic Route of CuH2O2 This article mentions the following:
In many important industries, such as the textile printing industry, a large amount of dye/salt wastewater is often discharged, which can destroy the ecol. environment of the water body. Membrane technol. has a great potential in the treatment of environmental problems caused by dye/salt wastewater. Polyvinyl alc. (PVA) nanofiltration (NF) membrane has a bright future in dye/salt wastewater treatment, however, works on this are rare. Herein, antibacterial PVA NF membrane incorporated with Cu(OH)2 nanowires for the dye/salt wastewater treatment is reported. The membrane was prepared via coating the solutions containing PVA, glutaraldehyde and Cu(OH)2 nanowires on the polyethersulfone ultrafiltration membrane. Cu(OH)2 nanowires has a diameter of 60 nm and was successfully introduced into the membrane. The introduction of nanowires improved the membrane hydrophilicity and roughness, which is conducive to the improvement of membrane flux. Membrane separation performance for one component solution and dye/salt solution were investigated. The introduction of Cu(OH)2 increases the flux of the membrane obviously (the highest increase is 178.78% from 21.49 to 38.42 L·m-2·h-1·bar-1, for NaCl solution as the feed). Besides, the membrane doped with nanowires also possessed a high dye/salt selectivity. For one component solution, the dye removal rate was over 97.00% while the salt rejection was low (the lowest was 13.18% (NaCl)). For the dye/salt solution, the dye (Congo Red) rejection kept at a high level (98.91%) and the salt (NaCl) rejection was still low (13.71%), while the flux was also high (37.56 L·m-2·h-1·bar-1). The performance is superior to that of many membranes reported in previous works. Moreover, the Cu(OH)2 nanowires endowed the membrane with an improved and high antibacterial property. The sterilization rate of Escherichia coli and Staphylococcus aureus reached more than 99.99%. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Synthetic Route of CuH2O2).
Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper has continued to be one of the most utilized and important transition metal catalysts in synthetic organic chemistry. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Synthetic Route of CuH2O2
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”