Bulletin of the Korean Chemical Society

Korean Chemical Society (대한화학회)
권호 표지
DOI QR코드

DOI QR Code

Investigation of Gold and Silver Nanoparticles as Acid-base pH Indicators and Their Transition pH Ranges

  • Received : 2014.07.10
  • Accepted : 2014.08.26
  • Published : 2014.12.20
Download PDF
⟨ Previous Next ⟩

Abstract

Monitoring of pH, especially under highly alkaline conditions, is necessary in various processes in the industrial, biotechnological, agricultural, and environmental fields. However, few pH indicators that can function at highly alkaline levels are available, and most of which are organic-based pH indicators. Several years ago, it was reported that gold nanoparticles prepared using trisodium citrate dihydrate were rapidly aggregated at pH values higher than ~12.7. A shift of surface plasmon resonance for such aggregated gold nanoparticles can be applied to pH indicators, allowing for the substitution of traditional organic-based pH indicators. The most important characteristic of pH indicators is the transition pH range. Herein, gold and silver nanoparticles are prepared using different reducing agents, and their transition pH ranges are examined. The results showed that all nanoparticles prepared in this study exhibit similar transition pH ranges spanning 11.9-13.0, regardless of the nanoparticle material, reducing agents, and concentration.

Keywords

References

  1. Hecht, M.; Kraus, W.; Rurack, K. Analyst 2013, 138, 325. https://doi.org/10.1039/c2an35860c
  2. Dayanandan, A.; Kanagaraj, J.; Sounderraj, L.; Govindaraju, R.; Rajkumar, G. S. J. Clean Prod. 2013, 11, 533.
  3. Makinen, H.; Nieminen, K.; Maki, S.; Siiskonen, S. Int. J. Occup. Saf. Ergo. 2008, 14, 19. https://doi.org/10.1080/10803548.2008.11076745
  4. Moorthy, J. N.; Shevchenko, T.; Magon, A.; Bohne, C. J. Photochem. Photobiol., A 1998, 113, 189. https://doi.org/10.1016/S1010-6030(97)00332-8
  5. Canada, T. A.; Xue, Z. Anal. Chem. 2002, 74, 6073. https://doi.org/10.1021/ac0202987
  6. Li, J.; Peng, T. Anal. Chim. Acta 2003, 478, 337. https://doi.org/10.1016/S0003-2670(02)01513-1
  7. Alkali blue 6 B solution; Sigma-Aldrich Safety Data Sheet Product No. 32806, http://www.sigmaaldrich.com/safety-center.html.
  8. 1,3,5-Trinitrobenzene; Sigma-Aldrich Safety Data Sheet Product No. 442237, http://www.sigmaaldrich.com/safety-center.html.
  9. Tropaeolin O Sodium Salt; Sigma-Aldrich Safety Data Sheet Product No. 32663, http://www.sigmaaldrich.com/safety-center.html.
  10. Lim, J. K.; Joo, S.-W. Appl. Spectrosc. 2006, 60, 847. https://doi.org/10.1366/000370206778062183
  11. Kim, T.; Lee, K.; Gong, M.-S.; Joo, S.-W. Langmuir 2005, 21, 9524. https://doi.org/10.1021/la0504560
  12. Israelachvili, J. N. Intermolecular and Surface Forces, 3rd ed.; Academic Press: Amsterdam, Netherlands, 2011; Chap. 13.
  13. Lee, P. C.; Meisel, D. J. Phys. Chem. 1982, 86, 3391. https://doi.org/10.1021/j100214a025
  14. Lim, J. K.; Kim, Y.; Kwon, O.; Joo, S.-W. ChemPhysChem 2008, 9, 1781. https://doi.org/10.1002/cphc.200800175
  15. Lim, J. K.; Kwon, O.; Joo, S.-W. J. Phys. Chem. C 2008, 112, 6816. https://doi.org/10.1021/jp077409w
  16. Lee, K. Y.; Kim, M.; Kwon, S. S.; Han, S. W. Mater. Lett. 2006, 60, 1622. https://doi.org/10.1016/j.matlet.2005.11.095
  17. Hedberg, J.; Lundin, M.; Lowe, T.; Blomberg, E.; Wold, S.; Wallinder, I. O. J. Colloid Interface Sci. 2012, 369, 193. https://doi.org/10.1016/j.jcis.2011.12.004
  18. Kim, J.-W.; Kim, J. H.; Chung, S. J.; Chung, B. H. Analyst 2009, 137, 1291.
  19. Vujacic, A.; Vasic, V.; Dramicanin, M.; Sovilj, S. P.; Bibic, N.; Hranisavlijevic, J.; Wiederrecht, G. P. J. Phys. Chem. C 2012, 116, 4655.
  20. Csapo, E.; Patakfalvi, R.; Hornok, V.; Toth, L. T.; Sipos, A.; Szalai, A.; Csete, M.; Dekany, I. Colloids Surf., B 2012, 98, 43. https://doi.org/10.1016/j.colsurfb.2012.03.036