Krishna Vijay, Noguchi Naoki, Koopman Ben, Moudgil Brij
Particle Engineering Research Center, 205 Particle Science and Technology Building, PO Box 116135, University of Florida, Gainesville, FL 32611, USA.
J Colloid Interface Sci. 2006 Dec 1;304(1):166-71. doi: 10.1016/j.jcis.2006.08.041. Epub 2006 Aug 24.
Fullerenes are known for their unique electronic properties including high electron affinity. Although use of fullerenes for scavenging photo-generated electrons from titanium dioxide particles has been demonstrated, no attempts have been made to utilize the unique properties of fullerenes to increase the efficacy of photocatalysis. The present study has demonstrated that a mixture of water-soluble polyhydroxy fullerenes (PHF) and titanium dioxide (anatase polymorph) enhances photocatalytic degradation of organic dye. The PHF molecules adsorbed to the surface of titanium dioxide due to electrostatic forces, with adsorption density being higher at lower pH values. The surface coverage of titanium dioxide nanoparticles by PHF molecules determined the extent of enhancement, with an optimum dosed weight ratio of PHF to titanium dioxide at 0.001. Hydroxylation and concomitant solubilization of fullerenes allow their unique electronic properties to be harnessed for photocatalysis.
富勒烯以其独特的电子性质（包括高电子亲和力）而闻名。尽管已经证明可以使用富勒烯从二氧化钛颗粒中清除光生电子，但尚未有人尝试利用富勒烯的独特性质来提高光催化效率。本研究表明，水溶性多羟基富勒烯（PHF）和二氧化钛（锐钛矿型）的混合物可增强有机染料的光催化降解。由于静电力，PHF分子吸附在二氧化钛表面，在较低pH值下吸附密度更高。PHF分子对二氧化钛纳米颗粒的表面覆盖程度决定了增强的程度，PHF与二氧化钛的最佳剂量重量比为0.001。富勒烯的羟基化和随之而来的增溶作用使其独特的电子性质可用于光催化。
Zotero 插件