Synthesis and Excellent Antibacterial Activity of Ag_(2)O-Loaded Carboxymethyl Starch Nanocomposites

作     者：WAN Lina YU Liangmin HOU Jin ZHAO Xia WAN Lina;YU Liangmin;HOU Jin;ZHAO Xia

作者机构：Key Laboratory of Marine Chemistry Theory and TechnologyMinistry of EducationCollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China Shandong Key Laboratory of Corrosion ScienceInstitute of OceanologyChinese Academy of SciencesQingdao 266100China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2023年第22卷第3期

页      面：728-734页

核心收录：

学科分类：0710[理学-生物学] 0908[农学-水产] 0707[理学-海洋科学] 08[工学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0824[工学-船舶与海洋工程] 

基　　金：supported by the National Key Research and Development Project(No.2019YFC0312103) the Open Fund of Shandong Key Laboratory of Corrosion Science(No.KLCS201905) 

主　　题：antibacterial activity silver oxide nanoparticles carboxymethyl starch 

摘      要：Carboxymethyl starch/silver oxide nanocomposites(CMS-Ag_(2)O NCs)were successfully fabricated by modifying carboxymethyl starch(CMS)with Ag_(2)O obtained from an aqueous AgNO_(3)solution as silver ***_(2)O nanoparticles(NPs)formed on the surface of CMS by ion *** on SEM images,the diameters of Ag_(2)O NPs were determined to be between 50 and 100 *** the XRD spectra of CMS-Ag_(2)O NCs,the new diffraction peaks appeared at 33.88°and 38.08°,which were attributed to the Ag_(2)O *** to the XPS analysis,Ag 3d_(5/2)and Ag 3d_(3/2)peaks in CMS-Ag_(2)O NCs were fitted into two main peaks centered at 367.6 eV and 373.6 eV,which were attributed to Ag^(+).The antibacterial efficiencies of CMS-Ag_(2)O NCs against Escherichia coli,Staphylococcus aureus,Pseudoalteromonas tetraodonis,Micrococcus luteus,and Shewanella putrefaciens were determined to be 99.6%,99.7%,99.4%,99.5%,and 99.6%,*** antibacterial efficiencies of CMS-Ag_(2)O NCs against the bacterial species were all greater than 99%.Therefore,these results indicated that CMS-Ag_(2)O NCs was highly effective as a bactericidal agent against multiple bacterial ***-Ag_(2)O NCs can be further applied to antifouling coating.