Published date:Sep 11 2017

Journal Title: KnE Life Sciences

Issue title: International Conference on Natural Resources and Life Sciences (NRLS-2016)

Pages:41-50

DOI: 10.18502/kls.v3i5.977

Atik Setyanisetyaniatikatric@gmail.comDept. of Chemistry, Faculty of Science, Semarang State University, Sekaran Street, Gunungpati, Semarang 50229, Indonesia

Sri Wahyuni

Sigit Priatmoko

Emas Agus Prastyo Wibowo

Nur Amin

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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