Birkin Besancon Proceeding paper printed view.doc

105 figure 3 plot of current versus time detected by

  • No School
  • AA 1
  • 6

This preview shows page 5 - 6 out of 6 pages.

105 Figure 3. Plot of current versus time detected by a 25 m Pt microelectrode positioned at approximately 20 m from the bubble wall where a sound field of 2.08 kHz at 51.74 Pa (measured in the bubble location in the absence of the bubble) was alternated between off and on in 30 s intervals. The solution used was an aerobic solution of 5 mmol dm -3 Fe(CN) 6 3- in 0.2 mol dm -3 Sr(NO 3 ) 2 . The solution temperature was 18-22 o C. ‘A’ indicates sound irradiation, ‘B’ termination of sound irradiation and ‘C’ initiation of sound irradiation for second period. The dotted horizontal line indicates the expected current under silent conditions if the bubble where not to change in size during the experiment.
Image of page 5

Subscribe to view the full document.

Conclusions The acoustoelectrochemical technique has been shown to be able to measure the rate of bubble growth due to rectified diffusion of gas from the liquid to gas phase. The bubble radius growth rate determined using this technique was 0.0371 µm s -1 under the conditions stated. This is considerably smaller than previously determined but at lower frequency and acoustic pressure amplitude. Acknowledgements The authors thank the EPSRC (Grant GR/M24615/01) for support. TGL would like to thank the Royal Society Leverhulme trust for a Senior Research Fellowship References (1) G. O. H. Whillock, B. F. Harvey, Ultrasonics Sonochemistry, 4, (1997), 33. (2) G. O. H. Whillock, B. F. Harvey, Ultrasonics Sonochemistry, 4, (1997), 23. (3) P. R. Birkin, R. O'Connor, C. Rapple, S. S. Martinez, Journal of the Chemical Society Faraday Transactions, 94, (1998), 3365. (4) A. Weissler, Journal of the American Chemical Society, 81, (1959), 1077. (5) K. Makino, M. M. Mossoba, P. Riesz, Journal of the American Chemical Society, 104, (1982), 3537. (6) C. Petrier, M. F. Lamy, Journal of Physical Chemistry US, 98, (1994), 10514. (7) M. R. Hoffmann, I. Hua, R. Hoechemer, Ultrasonics Sonochemistry, 3, (1996), s163. (8) T. G. Leighton, The Acoustic Bubble Academic Press, London, 1994. (9) Y. E. Watson, P. R. Birkin, T. G. Leighton, Ultrasonics Sonochemistry, 10, (2003), 65. (10) P. R. Birkin, Y. E. Watson, T. G. Leighton, Journal of the Chemical Society Chemical Communications (2001), 2650. (11) P. R. Birkin, Y. E. Watson, T. G. Leighton, K. L. Smith, Langmuir, 18, (2002), 2135. (12) G. Denuault In Chemistry in Industry , 1996; Vol. 18, pp 678. (13) J. Kwak, A. J. Bard, Analytical Chemistry, 61, (1989), 1221. (14) J. L. Amphlett, G. Denuault, Journal of Physical Chemistry B, 102, (1998), 9946. (15) P. R. Birkin, T. G. Leighton, Y. E. Watson, J. F. Power In Acoustics Bulletin , 2001; Vol. Sept/Oct, pp 24. (16) C. C. Church, Journal of the Acoustics Society of America, 84, (1988), 1758. (17) E. I. Eller, Journal of the Acoustics Society of America, 46, (1969), 1246. (18) P. R. Birkin, T. G. Leighton, Y. E. Watson, Ultrasonics Sonochemistry (2003) In Preparation. 106
Image of page 6
  • Fall '19
  • Fluid Dynamics, Michael Faraday, microelectrode, P. R. Birkin, Ultrasonics Sonochemistry

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern