Application of Ultrasound for Sonodynamic Photocatalysis
Ultrasound has long been recognized as a means of effecting change at the cellular and tissue levels l-3, which may be enhanced in the presence of photosensitive agents 4-6, During insonation, the presence of bubbles can also play a role, creating strong microstreaming effects in solution and in more dramatic circumstances leading to the formation of energetic microjets 7, plasmas 8, and the production of other highly reactive species 9. Such sonodynamic activity has generated particular excitement in the medical community as it Moreover the dual role for microbubbles as both an adjunct to therapy and a diagnostic echogenicity enhancer has seen industry take a proactive role in their development. In the present paper we studied the role of ultrasound driven sonoluminescent light on the degradation of a fluorescent test species (rhodamine) in the presence of an archetypal photocatalyst material, TiO2, with a view to exploring its exploitation potential for downstream medical applications. We found that, whilst the efficiency of this process is seen to be low compared with conventional ultra-violet sources, we advocate the further exploration of the sonoluminescent approach given its potential for non-invasive applications. A strategy for enhancing the effect is also suggested.
Paul A Campbell Ian Campbell Pauline Axford Yaoyao Cui Peter KJ Robertson
Carnegie Physics Laboratory at the University of Dundee School of Engineering,Robert Gordon University, Schoolhill, Aberdeen AB10 1FR previously an undergraduate at Dundee, and is now undertaking doctoral research at the University of Medical Imaging Department of the Suzhou Institute of Biomedical Engineering and Technology (SIBET),
国际会议
2011 International Symposium on Bioelectronics and Bioinformatics(第二届国际生物医学电子学与生物信息学学术会议 ISBB 2011)
苏州
英文
80-83
2011-11-03（万方平台首次上网日期，不代表论文的发表时间）