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http://dx.doi.org/10.14478/ace.2020.1041

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)
Publication Information
Applied Chemistry for Engineering / v.31, no.4, 2020 , pp. 390-397 More about this Journal
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
${\alpha}-Al_2O_3$ nanoplates; $TiO_2$ shell; Roughness control; Adhesiveness; Pigment;
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1 M. Kaempgen, G. S. Duesberg, and S. Roth, Transparent carbon nanotube coatings, Appl. Surf. Sci., 252, 425-429 (2005).   DOI
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).   DOI
3 A. Kumar and C. Zhou, The race to replace tin-doped indium oxide: which material will win?, ACS Nano., 4, 11-14 (2010).   DOI
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).   DOI
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).   DOI
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).   DOI
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).   DOI
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).   DOI
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).   DOI
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).   DOI
11 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).   DOI
12 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).   DOI
13 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).   DOI
14 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).   DOI
15 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).   DOI
16 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).   DOI
17 H. Kim, Y. Miura, and C. W. Macosko, Graphene/polyurethane nanocomposites for improved gas barrier and electrical conductivity, Chem. Mater., 22, 3441-3450 (2010).   DOI
18 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).   DOI
19 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).
20 G. Pfaff, Special effect pigments based on silica flakes, Inorg. Mater., 39, 123-126 (2003).   DOI
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).   DOI
24 E. Hecht, Optics, 4th ed., Pearson Education Inc., Addison Wesley (2001).
25 H. Cheng, J. Ma, Z. Zhao, and L. Qi, Hydrothermal preparation of uniform nanosize rutile and anatase particles, Chem. Mater., 7, 663-671 (1995).   DOI
26 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).   DOI