Optimization of Optical Properties of Polycrystalline TiO2 Nanoparticles
Nanocrystalline TiO2 has attracted much attention as whitening pigment,due to its high refractive index,non-toxicity and chemical stability.Recently,its applications have been extended to a photocatalysis paper that can effectively decompose toxins and kill pathogens.Herein,we have investigated the effect of crystalline phase of TiO2 nanoparticles to optimize the optical properties as it is coated on the glass slide substrate.Eleven different crystallite fractions of anatase to rutile were prepared for this study.Optical properties including opacity,brightness and CIE L*a*b* values were tested by Opacimeter,Brightimeter and X-Rite 530 SpectroDensitometer.It was found that a specific ratio of two different crystalline phases exists to ensure relatively higher optical properties,and consequently,the optimum value of phase fraction was 0.60 rutile:0.40 anatase with best optical properties.
nano-TiO2 crystalline structure brightness opacity CIE L*a*b*
HONGLI ZHU KEFU CHEN DEWEI QI
Guangdong Public Lab.of Paper Technology and Equipment,South China University of Technology;State Ke Department of Paper Engineering,Chemical Engineering and Imaging,Western Michigan University,Michiga
国际会议
第二届国际造纸与环境学术会议(The Second International Papermaking & Environment Conference)
天津
英文
1023-1025
2008-05-14（万方平台首次上网日期，不代表论文的发表时间）