Sigit Priatmoko, FMIPA Kimia (2017) Synthesis and Characterization of TNTs/Polyaniline Composite as Photocatalyst Degradation of Rhodamin B by Visible Light. In: International Conference on Natural Resources and Life Sciences (2016).

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Abstract

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

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