Synthesis and Characterization of TNTs/Polyaniline Composite as Photocatalyst Degradation of Rhodamin B by Visible Light
The purpose of this research is to study the effect of the amount of aniline on their photocatalytic activity. Nano TiO2 was synthesized using sol-gel method with TiPP precursor. XRD characterization results showed that nano TiO2 with calcination temperature of 450 °C had size of 13.8 nm with high crystalline. The diffraction peaks of nano TiO2 at 2θ are 24.45°; 37.075°; 47.26° and 53.18°. Nano TiO2 was then synthesized with hydrothermal treatment 24 h of 140 °C to produce TNTs. The results of XRD analysis shows anatase phase with field (004) and (200). The morphology of TNTs begins to form at the calcinations temperature of 600 °C with textural coefficient value of 0.998 3 . Synthesis of composite TNTs/PANI (polyaniline) was done by in situ polymerization technique of aniline which was already contained nano TiO2. The molar ratio of aniline and APS in the synthesis of a composite is 1:1.5 with the addition of aniline of 15 %; 20 % and 25 % (w/w %). Characterization using FTIR showed the stretching vibration of the C=N in wavelength of 1 600 cm–1 to mark the formation of quinonoid compounds of polyaniline. The test of the rhodamine B degradation gave the best results on the 25 % TNTs/PANI composite, with the degradation percentage of 58.73 %. The characterization results using dr-uv proved that the decrease of energy gap in the TNTs/PANI composite which as evidenced with Kubelka-Munk calculation equation that was 25 % TNTs/PANI amounting to 3.19 eV and TNTs at 3.24 eV.
 Wijaya K, Sughiarto E., Fatimah I, Sudiono S, Kurniaysih D. Utilisasi TiO2-zeolit uv UV light for photodegradation material. congo red. TEKNOIN 2006;16(3):27–35.
 Xia PY, Sun Y, Wu Y, Mayers B, Gates B, Yin Y, Kim F, Yan , et al. One-dimensional nanostructures: Synthesis, characterization, and applications. Journal of Advanced Materials. 2003;15(5):353–389.
 Gratzel M, O’Regan B. A low-cost high-efficiency solar cell based on dye sensinitized colloidal TiO2 films. Journal of Nature 1991; 353: 737–740.
 Fujhisima A, Zhang X. Titanium dioxide photocatalysis: Present situation and future approaches. Comptes Rendus Chimie 2005;9(5–6):750–760.
 Xuyen L, Wang D, Cheng G, Luo Q, An J, Wang Y. Precipitation of polyanilinemodified TiO2 NPs and their photocatalytic activity under visible light iluminitation. Applied Catalysis B: Environmental 2008;81(3–4):267–273.
 Xiao Y. The preparation of titania nanotubes an1d its application in flexible dyesensitized solar cells. Elechtrochimica Acta 2010;55 (15):4573–4578.
 Kolen’ko YV, Kirill A, Kovnir AI, Gavrilov AV, Garshev, JF, Oleg LL. et al. M. Hydrothermal synthesis and characterization of nanorods of various titanates and titanium dioxide. Journal Physics Chemistry 2006;110(9):4030–4038.
 Ashraf M, El-Fattah MA, Dardir MM. Synthesis and characterization of titanium oxide nanotubes and its performance in epoxy nanocomposite coating. Journal of Coatings Technology and Research 2014;78:83–89.
 Poudel B, Wang WZ, Dames C. Huang JY, Kunwar S, Wang DZ, Banerjee D, et al. Formation of crystallized titania nanotubes and their transformation into nanowires. Jornal of Nanotechnoly 2005;16(9):1935–1940.
 Olad A, Behboudi S, Entezami AA. Preparation, characterization and photocatalytic activity of TiO2
/polyaniline core-shell nanocomposite. Bulletin of Materials Science 2011;35(5):801–809.
 Gunlazuardi J, Tjahjanto RT. Preparasi lapisan tipis TiO2 sebagai fotokatalis: Keterkaitan antara ketebalan dan aktivitas fotokatalis [Preparation of TiO2 thin film as photocatalyst: Linkage between thickness and photocatalytic activity]. Makara Jurnal Penelitian Universitas Indonesia 2001;5(2):81–91. [in Bahasa Indonesia].