汪远昊 Wang Yuanhao

主题:全光谱二氧化钛光触媒在石材表面的杀菌除霉研究 


内容简介:传统的光触媒,例如二氧化钛,是一种宽带隙半导体材料,在阳光或者紫外光的照射下,可以分解吸附在表面的有机物,以及杀菌除霉菌的功效,目前广泛应用在净水处理,空气净化等领域。然而传统的二氧化钛光触媒只能吸收波长小于380纳米的紫外光,因此其应用场合大大受限。我们研究组开发了一种自掺杂型的二氧化钛光触媒,其可以在可见光区域有很好的吸收,因此可以在室内光线条件下杀菌除霉。我们尝试将该材料涂覆在石材表面,测试研究了对石材防菌防霉以及少量污染物的功效。 


演讲人:汪远昊,国家千人计划专家,中国科学院研究员,福建中美友拓科技发展有限公司首席科学家。专长领域:绿色建筑纳米材料


Topic: Researches on Sterilization and Mildew-Removing on Stone Surfaces of Full-spectrum Titanium Dioxide 

Introduction: Traditional photocatalyst, such as titanium dioxide, is a kind of broad-band-gap semiconducting material, which can decompose organism on surfaces under sunlight or ultraviolet light, realizing a sterilizing and milew-removing effect. Nowadays, it's widely applied in purifying of water and air. However, traditional titanium oxide photocatalyst can only absorb ultraviolet light with wavelength less than 380nm, resulting in a huge limit on application. Our team developed an autodoping titanium oxide photocatalyst with outstanding absorption in visible region, leading to a property of sterilization and mildew-removing under indoor light conditions. We tried to coat this material on stone surfaces and tested the effect of sterilization and mildew-removing against a small quantity of contamination. 

Speaker: Wang Yuanhao, expert of Thousand Talents Program, professor of Chinese Academy of Science, chief scientist of C&A Friendly Development Science And technology Development Company Limited. His area of research is about environmental-friendly nanometer building materials.