S. Priatmoko, R.P. Sadewo, Harjito, S.K. Rakainsa
Fe-N-TiO2 photocatalyst has been used in water splitting to produce hydrogen. Templating agent and dopant modification intends to determine the optimum composition with the best characterization and the highest production rate in visible light. Fe-N-TiO2 is synthesized using a sol-gel method with a various PEG and N weight percent. The variation of PEG is 2, 3, and 4% while N is 20, 25, and 30%w/w. Photocatalyst is characterized using DR-UV to find the band gap, XRD to see the crystallinity, and FTIR to know the functional group. Hydrogen gas from water splitting is analyzed using GC-TCD. Fe-N-TiO2 with 20wt% N can decrease up band gap to 2.56 eV. Photocatalyst with 4% PEG accelerates gelation time to 164.33 hours. The calculation of PEG anatase phase is 86.86% while the crystallite size is 44.26 nm. Synthesized Fe-N-TiO2 has major absorbtion at 520 cm-1 which is a region of Ti-O. From the activity test, Fe-N-TiO2 with 2% PEG and 20wt% N produces 0.076 μmol/hour hydrogen. © Published under licence by IOP Publishing Ltd.
Chemistry Department, Faculty of Mathematics and Natural Sciences, Universitas Negeri Semarang, Indonesia
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