The silver loaded coordination polymer (Ag-bio-MOF) was synthesized by chemical reduction using the synthetic [Cd3(dpa)(DMF)2(H2O)3]·DMF (bio-MOF) as the carrier and AgNO3 as precursor,then the structure of composite prepared were characterized by X-ray single crystal diffraction (XRSCD) and X-ray diffraction (XRD).The silver ions content loaded on composite was about 3.3wt% determined by Volhard method,and its sustained release property was determined by immersion of deionized water repeatedly.The minimum inhibition concentration (MIC) of the composite was 50μg/mL and the sterilizing efficiency (SE) was over 99% against Escherichia coli ATCC 11229(E.coli).Moreover,the SE of supernatant to Escherichia coli was still more than 99% although after 5 times consecutive soaking by deionized water,indicating that Ag particles in/on the Ag-bio-MOF had an excellent sustained release performance.
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基金资助
安徽高校自然科学基金重点项目(KJ2015A286);国家级大学生创新创业项目(201710376001)
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