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Design of copper oxide nanosheets-Loaded Zeolite with Efficient Inhibition of Marine Bacteria

Journal of Ocean University of China 2022年第5期21卷 1237-1243页

作者： HOU Jin YE Yongcheng Key Laboratory of Marine Chemistry Theory and Technology Ministry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China Shandong Key Laboratory of Corrosion Science Institute of OceanologyChinese Academy of SciencesQingdao 266100China

copper oxide-loaded zeolite 4A nanocomposites(CuO-zeolite NCs)were successfully prepared by modifying zeolite 4A with CuSO_(4)aqueous solution as the copper *** 4A showed an important role in hosting copper oxide,and CuO-zeolite NCs exhibited a controlled release of copper *** patterns confirmed the appearance of new diffraction peaks of copper oxide at 35.83°and 38.83°.CuO nanosheets formed on the surface of zeolite 4A were about 30–40 nm thick over a width of 200–300 ***-zeolite NCs were primarily composed of Cu,Si,Al and O,as measured by *** 2p_(3/2) and Cu 2p_(1/2) peaks were fitted into two main peaks centered at 934.7 eV and 954.6 eV,which were attributed to Cu(II).Zeolite 4A and CuO-zeolite NC displayed reversible Langmuir isotherm(type-I)characteristics and showed maximum adsorption quantities of almost 200 cm^(3) g^(−1) at a relative pressure of 1.0 by CO_(2)adsorption-desorption *** antibacterial efficiencies of the CuO-zeolite NC were 99.4%,96.7%,and 96.8%against Pseudoalteromonas tetraodonis(***),Micrococcus luteus(***),and Shewanella putrefaciens(***),*** values showed that nano CuO-loaded zeolite 4A acted as a strong bactericide against marine ***-zeolite NCs can be further applied to marine antifouling coating.

关键词： antibacterial activities marine bacteria copper oxide nanosheets zeolite

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