铋系纳米材料表面性质的调控及其对海洋微生物污损防治的分子机制

项目名称： 铋系纳米材料表面性质的调控及其对海洋微生物污损防治的分子机制

项目编号： No.41476068

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 张盾

作者单位： 中国科学院海洋研究所

项目金额： 87万元

中文摘要： 生物污损是海洋工程材料在服役过程中面临的重要问题之一，开发新型高效的海洋生物污损防护技术具有重要意义。本项目以具有良好可见光催化活性和环境友好特性的铋系纳米材料为基础材料，通过BiVO4、Bi2WO6和BiOI等合成材料在单体状态和复合状态下光催化过程中可产生不同类型的自由基，研究不同的自由基对材料光催化防污性能的影响和防污作用的机理，建立不同自由基类型与材料光催化防污性能间的相关性模型；研究材料的表面性质对光催化性能的影响机制，建立材料表面性质与光催化防污性能间的相关性模型；结合材料学、分子生物学等研究手段，从分子水平揭示光催化反应对典型的污损微生物附着、生长、代谢过程的作用机制。本项目是集海洋化学、材料学、海洋生物学于一体的研究，具有较强的学科交叉性。本项目的开展对深入认识光催化技术在海洋防污中的应用，理解光催化技术与污损生物间作用的分子机制有着重要意义和科学价值。

中文关键词： 海洋生物污损；铋系纳米材料；表面性质；可见光催化；分子机制

英文摘要： Marine biofouling is one of the important problems the marine engineering materials will face in practical application, so it is significant to develop novel and efficient antifouling technology. Based on the good photocatalytic activity, environment friendly property, and generation of different radicals types of bismuth series nanomaterials (BiVO4, Bi2WO6, and BiOI), this project intends to focus on the research of the effect of different radicals on the photocatalytic antifouling performance and mechanism, establishing a correlation model between radicals types and photocatalytic antifouling performance of nanomaterials. In addition, we will further investigate the effect of surface properties on the photocatalytic antifouling performance of nanomaterials, establishing a correlation model between surface properties and photocatalytic antifouling performance of nanomaterials. What's more, combined with molecular biology and materials science techniques, the mechanism of photocatalytic reaction to the metabolic process of marine biofouling microorganism will be indicated at the molecular level. This project embodies the great feature of its multi-discipline, embracing marine chemistry, materials, and biology in one building. This study will has a great significance and scientific value in deeply understanding the potential application of photocatalytic technology in marine antifouling and the molecular mechanism between photocatalytic technology and marine fouling microorganism. It will also provide a theoretical support and guidance for the selection of marine antibiofouling materials.

英文关键词： Marine biofouling;Bismuth-based nanomaterials;Surface property;Visible light photocatalysis;Molecular mechanism