TY - GEN
T1 - Kinetic study of methylene blue photocatalytic decolorization using zinc oxide under UV-LED irradiation
AU - Subagyo, Riki
AU - Kusumawati, Yuly
AU - Widayatno, Wahyu Bambang
N1 - Publisher Copyright:
© 2020 Author(s).
PY - 2020/6/2
Y1 - 2020/6/2
N2 - Kinetic study of methylene blue photocatalytic decolorization using zinc oxide was carried out under UV-LED lamp irradiation. Zinc oxide was prepared by precipitation method. Zinc oxide was characterized by XRD, FESEM, and N2 adsorption-desorption. Characterization results show that zinc oxide has a hexagonal crystal face, particle size between 0.125-0.3 μm, specific surface area (SBET), micropore volume, and mesopore volume are 60.20 m2/g, 0.541 cm3/g, and 0.02 cm3/g, respectively. The variations of pH and concentration of methylene blue solution were observed. The results show that the alkaline conditions had the highest methylene blue photocatalytic decolorization rate. At initial low concentration, the methylene blue photocatalytic decolorization is very high and decrease when the initial concentration of methylene blue increase. Photocatalytic decolorization reaction kinetics follow the first-order kinetic. The Langmuir-Hinshelwood kinetic analysis results show that photocatalytic reaction constant and Langmuir-Hinshelwood constant value are 2.2621 L.mg-1.min-1 and 0.0144 L.mg-1, respectively.
AB - Kinetic study of methylene blue photocatalytic decolorization using zinc oxide was carried out under UV-LED lamp irradiation. Zinc oxide was prepared by precipitation method. Zinc oxide was characterized by XRD, FESEM, and N2 adsorption-desorption. Characterization results show that zinc oxide has a hexagonal crystal face, particle size between 0.125-0.3 μm, specific surface area (SBET), micropore volume, and mesopore volume are 60.20 m2/g, 0.541 cm3/g, and 0.02 cm3/g, respectively. The variations of pH and concentration of methylene blue solution were observed. The results show that the alkaline conditions had the highest methylene blue photocatalytic decolorization rate. At initial low concentration, the methylene blue photocatalytic decolorization is very high and decrease when the initial concentration of methylene blue increase. Photocatalytic decolorization reaction kinetics follow the first-order kinetic. The Langmuir-Hinshelwood kinetic analysis results show that photocatalytic reaction constant and Langmuir-Hinshelwood constant value are 2.2621 L.mg-1.min-1 and 0.0144 L.mg-1, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85086344587&partnerID=8YFLogxK
U2 - 10.1063/5.0005263
DO - 10.1063/5.0005263
M3 - Conference contribution
AN - SCOPUS:85086344587
T3 - AIP Conference Proceedings
BT - 14th Joint Conference on Chemistry 2019
A2 - Rahmawati, Fitria
A2 - Saraswati, Teguh Endah
A2 - Nugrahaningtyas, Khoirina Dwi
A2 - Marliyana, Soerya Dewi
A2 - Kusumaningsih, Triana
PB - American Institute of Physics Inc.
T2 - 14th Joint Conference on Chemistry 2019, JCC 2019
Y2 - 10 September 2019 through 11 September 2019
ER -