Preparation of rare earth iodates and their decomposition activity on organic dyes and antibacterial/antiviral activities
Preparation of rare earth iodates and their decomposition activity on organic dyes and antibacterial/antiviral activities
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DOI：
10.1016/j.ceramint.2023.01.060
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发表时间：
2023-01
影响因子：
5.2
通讯作者：
K. Abe;K. Sunada;Yasuhide Mochizuki;T. Isobe;S. Matsushita;T. Nagai;H. Ishiguro;A. Nakajima
中科院分区：
文献类型：
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作者：
K. Abe;K. Sunada;Yasuhide Mochizuki;T. Isobe;S. Matsushita;T. Nagai;H. Ishiguro;A. Nakajima
在室温下用沉淀法制备了非晶态Ce（IO3）4粉末后，将溶液混合形成的沉淀物煅烧，制备了晶态Ce（IO3）3、α-La（IO3）3和δ-La（IO3）3粉末样品。所有样品都洗脱了溶液中的一些组分离子。Ce（IO3）4在黑暗条件下能分解亚甲基蓝和甲基橙子。在分解反应之前和之后测量的Ce的化合价表明Ce（IV）的氧化分解。这些样品对大肠杆菌和金黄色葡萄球菌具有较强的抗菌活性，对无包膜病毒噬菌体Q β和有包膜病毒噬菌体Φ 6也具有较强的抗病毒活性。此外，这些样品引起蛋白质变性。可以想象，从样品中泄漏的镧和铈离子的吸附，离子如Ce（IV）和IO3 −的氧化能力，以及pH值影响这些抗菌和抗病毒活性。
After amorphous Ce(IO3)4powder was prepared using precipitation method at room temperature, powder samples of crystalline Ce(IO3)3, α-La(IO3)3and δ-La(IO3)3were prepared by calcining the precipitates formed by mixing the solutions. All samples eluted some constituent ions in the solution. The Ce(IO3)4decomposed methylene blue and methyl orange in water in the dark. The valence of Ce measured before and after the decomposition reaction suggested oxidative decomposition by Ce(IV). These samples exhibited high antibacterial activity againstEscherichia coliandStaphylococcus aureus, and also high antiviral activity against the non-enveloped virus bacteriophage Qβ and the enveloped virus bacteriophage Φ6. Moreover, these samples caused protein denaturation. It is conceivable that the adsorption of lanthanum and cerium ions leaked from the sample, the oxidation power of ions such as Ce(IV) and IO3−, and pH value affected these antibacterial and antiviral activities.