Linda Jati Kusumawardani, Yulian Syahputri, Ani Iryani

Judul	:	Photocatalytic Degradation of Paraquat Dichloride using TiO2-Fe Nano Powder under Visible and Sunlight Irradiation
Abstrak	:	Paraquat dichloride, is an active herbicide with the chemical formula [(C6H7N2)]Cl2, and in the last decade became the most widely used agricultural pesticide in Indonesia. It has important role in oil palm plantations but recently appeared many problems and caused environmental pollution. In this research, photodegradation of paraquat herbicide using TiO2-Fe nano powder was investigated. The TiO2-Fe catalyst was prepared by the solgel method and characterized using XRD and DRS. The characterization results showed that Fe as a dopant on TiO2 produced a small crystal size. This condition can increase the performance of photocatalysis from the area of UV to visible light. Degradation of paraquat dichloride is carried out under visible and sunlight irradiation to significantly increase photocatalytic activity. Decreasing of paraquat content was observed for each 15 minutes and measured by spectrophotometer UV-Vis. The addition of 0.5 gram of TiO2-Fe catalyst to 50 mL of sample solution increased the degradation percent by 98.4% for 75 minutes with a concentration of Fe3+ 10% (w/w). These results indicate that the presence of Fe dopants on TiO2 can increase the photocatalytic activity of nano TiO2 particles from UV light to visible light.
Tahun	:	2020	Media Publikasi	:	Jurnal Nasional Terakreditasi A
Kategori	:	Jurnal	No/Vol/Tahun	:	Jurnal Kimia Valensi, Vol 6(1), May 2020, 55-61 / 6(1) / 2020
ISSN/ISBN	:	2548-3013
PTN/S	:	Universitas Pakuan	Program Studi	:	KIMIA
Bibliography	:	Arfi F, Safni S, Abdullah Z. 2018. Degradation of paraquat in gramoxone pesticide with addition of ZnO. Molekul. 12(2): 159-165. https://doi.org/10.20884/1.jm.2017.12.2.32 6 Badli NA, Ali R, Wan Abu Bakar WA, Yuliati L. 2017. Role of heterojunction ZrTiO4/ZrTi2O6/TiO2 photocatalyst towards the degradation of paraquat dichloride and optimization study by Box– Behnken design. Arabian Journal of Chemistry. 10(7): 935–943. https://doi.org/10.1016/j.arabjc.2016.02.01 1 Desipio MM, Thorpe R, Saha D. 2018. Photocatalytic decomposition of paraquat under visible light by carbon nitride and hydrogen peroxide. Optik. 172: 1047– 1056.https://doi.org/10.1016/j.ijleo.2018.0 7.124 Hamadi NK, Swaminathan S, Chen XD. 2004. Adsorption of Paraquat dichloride from aqueous solution by activated carbon derived from used tires. Journal of Hazardous Material. 112: 133–141. https://doi.org/10.1016/j.jhazmat.2004.04. 011 Hreniak A, GryzÅ‚o K, Boharewicz B, Sikora A, Chmielowiec J, Iwan A. 2015. Preparation and optical properties of iron-modified titanium dioxide obtained by sol – gel method. Optical Materials. 46: 45–51. https://doi.org/10.1016/j.optmat.2015.03.0 53 Jlenia M, Catanzaro I, Loddo V, Palmisano L, Sciandrello G. 2007. Photocatalytic degradation of paraquat and genotoxicity of its intermediate products. Journal of Photochemistry and Photobiology. 185:277–282. https://doi.org/10.1016/j.jphotochem.2006. 06.021 Koliyat S, Kibombo HS, Mahoney L, Wu C, Yoon M, Koodali RT. 2013. Synthesis of mixed phase anatase-TiO2 (B) by a simple wet chemical method. Materials Letters. 95: 175–177. https://doi.org/10.1016/j.matlet.2012.12.10 9 Kusumawardani LJ, Syahputri Y. 2019. Study of structural and optical properties of Fe(III)- doped TiO2 prepared by sol-gel method. IOP Conference Series: Earth and Environmental Science. 299(III): 012066. https://doi.org/10.1088/1755- 1315/299/1/012066 Marien CBD, Cottineau T, Robert D, Drogui P. 2016. TiO2 Nanotube arrays: Influence of tube length on the photocatalytic degradation of Paraquat. Applied Catalysis B: Environmental. 194(2): 1–6. https://doi.org/10.1016/j.apcatb.2016.04.0 40 Nasralla N, Yeganeh M, Astuti Y, Piticharoenphun S, Shahtahmasebi N. 2013. Structural and spectroscopic study of Fe-doped TiO2 nanoparticles prepared by sol–gel method. Scientia Iranica. 20(3): 1018–1022. https://doi.org/10.1016/j.scient.2013.05.01 7 Sood S, Umar A, Kumar S, Kumar S. 2015. Highly effective Fe-doped TiO2 nanoparticles photocatalysts for visible- light driven photocatalytic degradation of toxic organic compounds. Journal of Colloid and Interface Science. 450: 213–223. https://doi.org/10.1016/j.jcis.2015.03.018 Sorolla MG, Dalida ML, Khemthong P, Grisdanurak N. 2012. Photocatalytic degradation of paraquat using nano-sized Cu-TiO2/SBA-15 under UV and visible light. Journal of Environmental Sciences (China). 24(6): 1125–1132. https://doi.org/10.1016/S1001- 0742(11)60874-7 Sun L, Li J, Wang CL, Li SF, Chen HB, Lin CJ. 2009. An electrochemical strategy of doping Fe3+ into TiO2 nanotube array films for enhancement in photocatalytic activity. Solar Energy Materials and Solar Cells. 93(10): 1875–1880. https://doi.org/10.1016/j.solmat.2009.07.0 01
URL	:	http://journal.uinjkt.ac.id/index.php/valensi/article/view/13625