Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
권호 표지
DOI QR코드

DOI QR Code

Synthesis of Metallic Gold Colored α-Al2O3 Nanoplate-TiO2 Core-Shell Pigments with Robust and Photo-Stable Smooth TiO2 Shell

  • Lee, Su Jin (Functional Crystallization Center (ERC), Department of Chemical Engineering, Kyung Hee University) ;
  • You, Myoung Sang (Functional Crystallization Center (ERC), Department of Chemical Engineering, Kyung Hee University) ;
  • Park, Jin Kyoung (Department of Chemical and Biological Engineering, Korea University) ;
  • Park, Bum Jun (Functional Crystallization Center (ERC), Department of Chemical Engineering, Kyung Hee University) ;
  • Im, Sang Hyuk (Department of Chemical and Biological Engineering, Korea University)
  • Received : 2020.06.24
  • Accepted : 2020.07.09
  • Published : 2020.08.10
Download PDF
⟨ Previous Next ⟩

Abstract

To synthesize non-corrosive metallic gold colored α-Al2O3 nanoplate-TiO2 core-shell pigments with controlled roughness, we systematically checked the morphological variation of the TiO2 shell with the mole ratio of TiCl4 and NaOH from 1 : 1 to 1 : 1.5, 1 : 2, 1 : 2.5, 1 : 3, 1 : 3.5, and 1 : 4. The more increased mole ratio of TiCl4 and NaOH resulted in the smoother TiO2 shell due to the promoted formation of anatase TiO2 than that of the rutile one. By the heat-treatment of pigments at 500 ℃, we could improve the adhesiveness between TiO2 shell and α-Al2O3 nanoplates without changing their topology and roughness. In addition, the α-Al2O3 nanoplate with the robust TiO2 by heat-treatment exhibited comparable photo-stability against photo-catalytic degradation by UV exposure compared with the commercially available α-Al2O3/TiO2 lustering pigment.

Keywords

References

  1. M. Kaempgen, G. S. Duesberg, and S. Roth, Transparent carbon nanotube coatings, Appl. Surf. Sci., 252, 425-429 (2005). https://doi.org/10.1016/j.apsusc.2005.01.020
  2. J.-Y. Lee, S. T. Connor, Y. Cui, and P. Peumans, Solution-processed metal nanowire mesh transparent electrodes, Nano Lett., 8, 689-692 (2008). https://doi.org/10.1021/nl073296g
  3. A. Kumar and C. Zhou, The race to replace tin-doped indium oxide: which material will win?, ACS Nano., 4, 11-14 (2010). https://doi.org/10.1021/nn901903b
  4. D. Hectht and L. Hu, Emerging transparent electrodes based on thin films of carbon nanotubes, graphene, and metallic nanostructures, Adv. Mater., 23, 1482-1513 (2011). https://doi.org/10.1002/adma.201003188
  5. A. R. Rathmell, S. M. Bergin. Y.-L. Hua, Z.-Y. Lin, and B. J. Wiley, The growth mechanism of copper nanowires and their properties in flexible, transparent conducting films, Adv. Mater., 22, 3558-3563 (2010). https://doi.org/10.1002/adma.201000775
  6. P. M. Ajayan, L. S. Schadler, C. Giannaris, and A. Rubio, Single-walled carbon nanotube-polymer composites: strength and weakness, Adv. Mater., 12, 750-753 (2000). https://doi.org/10.1002/(SICI)1521-4095(200005)12:10<750::AID-ADMA750>3.0.CO;2-6
  7. H. Ye, H. Lam, N. Titchenal, Y. Gogotsi, and F. Ko, Reinforcement and rupture behavior of carbon nanotubes-polymer nanofibers, Appl. Phys. Lett., 85, 1775-1777 (2004). https://doi.org/10.1063/1.1787892
  8. A. D. Franklin, M. Luisier, S.-J. Han, G. Tulevski, C. M. Breslin, L. Gignac, M. S. Lundstrom, and W. Haensch, Sub-10 nm carbon nanotube transistor, Nano Lett., 12, 758-762 (2012). https://doi.org/10.1021/nl203701g
  9. A. I. Boukai, Y. Bunimovich, J. T.-K., J.-K. Yu, Wl. A. Goddard, and J. R. Heath, Silicon nanowires as efficient thermoelectric materials, Nature, 451, 168-171 (2008). https://doi.org/10.1038/nature06458
  10. M. J. Biercuk, M. C. Llaguno, M. Radosavljevic, J. K. Hyun, and A. T. Johnson, Carbon nanotube composites for thermal management, Appl. Phys. Lett., 80, 2767 (2002). https://doi.org/10.1063/1.1469696
  11. K. S. Kim, Y. Zhao, H. Jang, S. Y. Lee, J. M. Kim, K. S. Kim, J.-H. Ahn, P. Kim, J.-Y. Choi, and B. H. Hong, Large-scale pattern growth of graphene films for stretchable transparent electrodes, Nature, 457, 706-710 (2009). https://doi.org/10.1038/nature07719
  12. S. Bae, H. Kim, Y. Lee, X. Xu, J.-S. Park, Y. Zheng, J. Balakrishnan, T. Lei, H. R. kim, Y. I. Song, Y.-J. Kim, K. S. Kim, B. Özyilmaz, J.-H. Ahn, B. H. Hong, and S. Ijima, Roll-to-roll production of 30-inch graphene films for transparent electrodes, Nat. Nanotechnol., 5, 574-578 (2010). https://doi.org/10.1038/nnano.2010.132
  13. J. Wu, H. A. Becerril, Z. Bao, Z. Liu, Y. Chen and P. Peumans, Organic solar cells with solution-processed graphene transparent electrodes, Appl. Phys. Lett., 92, 263302 (2008). https://doi.org/10.1063/1.2924771
  14. G. D. Moon, G.-H. Lim, J. H. Song, M. Shin, T. Yu, B. Lim, and U. Jeong, Highly stretchable patterned gold electrodes made of Au nanosheets, Adv. Mater., 25, 2707-2712 (2013). https://doi.org/10.1002/adma.201300794
  15. Y. G. Seol, T. Q. Trung, O.-J. Yoon, I.-Y. Sohn, and N.-E. Lee, Nanocomposites of reduced graphene oxide nanosheets and conducting polymer for stretchable transparent conducting electrodes, J. Mater. Chem., 22, 23759-23766 (2012). https://doi.org/10.1039/c2jm33949h
  16. H. Kim, Y. Miura, and C. W. Macosko, Graphene/polyurethane nanocomposites for improved gas barrier and electrical conductivity, Chem. Mater., 22, 3441-3450 (2010). https://doi.org/10.1021/cm100477v
  17. Y. Su, V. G. Kravets, S. L. Wong, J. Waters, A. K. Geim, and R. R. Nair, Impermeable barrier films and protective coatings based on reduced graphene oxide, Nat. Commun., 5, 4843 (2014). https://doi.org/10.1038/ncomms5843
  18. M. Debeljak, A. Hladnik, L. Cerne, and D. Gregor-Svetec, Use of effect pigments for quality enhancement of offset printed specialty papers, Color Res. Appl., 38, 168-176 (2012).
  19. G. Pfaff, Special effect pigments based on silica flakes, Inorg. Mater., 39, 123-126 (2003). https://doi.org/10.1023/A:1022138427835
  20. V. Štengl, J. Šubrt, S. Bakardjieva, A. Kalendova, and P. Kalenda, The preparation and characteristics of pigments based on mica coated with metal oxides, Dyes Pigm., 58, 239-244 (2003). https://doi.org/10.1016/S0143-7208(03)00086-X
  21. S. Teaney, G. Pfaff, and K. Nitta, New effect pigments using innovative substrates, Eur. Coat. J., 4, 90-96 (1999).
  22. S. Sharrock and N. Schuel, New effect pigments based on $SiO_2$ and $Al_2O_3$ flakes, Eur. Coat. J., 1/2, 20-23 (2000).
  23. M. W. Suh, S. J. Lee, M. S. You, S. B. Park, and S. H. Im, Non-corroding $\alpha$-$Al_2O_3$@$TiO_2$ core-shell nanoplates appearing metallic gold in colour, RSC Adv., 5, 56954-56958 (2015). https://doi.org/10.1039/c5ra07784b
  24. E. Hecht, Optics, 4th ed., Pearson Education Inc., Addison Wesley (2001).
  25. H. K. Song, B. K. Park, and J. M. Lee, Preparation of flaky $\alpha$- $Al_2O_3$ crystals by transition metal salts addition, J. Korean Ceram. Soc., 42, 384-390 (2005). https://doi.org/10.4191/KCERS.2005.42.6.384
  26. H. Cheng, J. Ma, Z. Zhao, and L. Qi, Hydrothermal preparation of uniform nanosize rutile and anatase particles, Chem. Mater., 7, 663-671 (1995). https://doi.org/10.1021/cm00052a01