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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2023.12
- 수록면
- 111 - 128 (18page)
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초록· 키워드
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In the present study we have prepared graphene supported CeO₂-TiO₂ mixed oxide and studied its activity towards photocatalytic degradation of methylene blue (MB) dye. The mixed oxide is prepared with the variation of cerium loading to that of titanium from 2% to 10% by sol-gel method and graphene oxide (GO) is prepared by using modified Hummer’s method. The resulting adsorbent nanocomposite is synthesised by chemical reduction method with GO loading 2% by weight to that of mixed metal oxide and employed in the catalytic process through batch wise adsorption to test the optimum level of activity by varying the parameters (pH: 3-10, time: 15-75 min, dye concentration: 5-40 ppm, anions like Cl-, SO₄<SUP>2-</SUP>, NO₃<SUP>-</SUP>, HCO₃<SUP>-</SUP>) with catalyst loading 0.020 g per 0.100 L of the dye solution. It is inferred that the adsorbent catalyst nanocomposite with ceria loading up to 5% with that of titania has better catalytic activity towards the photodegradation of MB with the optimum condition of pH-10 and time-75 minutes. Degraded product characterisation is carried out by LC-MS technique, which confirmed the degradation of MB. The adsorption kinetics is being investigated through pseudo-first-order kinetics and Langmuir adsorption model with good fitting having R2 value 0.986 and 0.993 respectively.
목차
ABSTRACT
1. Introduction
2. Experimental
3. Characterisation
4. Results and Discussion
5. Photocatalytic Activity Study
6. Conclusions
References
참고문헌 (73)
참고문헌 신청
Lin J, Luo Z, Liu J, Li P. Photocatalytic degradation of methylene blue in aqueous solution by using ZnO-SnO2 nanocomposites. Mater. Sci. Semicond. Process. 2018;87:24-31. http://dx.doi.org/10.1016/j.mssp.2018.07.003.
Balu S, Uma K, Pan GT, Yang TCK, Ramaraj SK. Degradation of Methylene blue in the presence of visible light using SiO2@α-Fe2O3 Nanocomposites Deposited on SnS2 Flower. Materials. 2018;11(6):1030-1047. http://dx.doi.org/10.3390/ma11061030
Dariani RS, Esmaeili A, Mortezaali A, Dehghanpour S. Photocatalytic reaction and degradation of methylene blue on TiO2 nano-siezed particles. Optik. 2016;127:7143-7154. http://dx.doi.org/10.1016/j.ijleo.2016.04.026.
Banerrjee S, Benjwal P, Singh M, Kar KK. Graphene Oxide (rGO) - metal Oxide (TiO2/Fe3O4) based nanocomposites for the removal of methylene blue. Appl. Surf. Sci. 2018;489:560-568. https://doi.org/10.1016/j.apsusc.2018.01.085.
Li Y, Du Q, Liu T, et al. Comparative study of methylene blue dye adsorption onto activated carbon, graphene oxide and carbon nano tubes. Chem Eng Res Des 2013;91:361-368. https://doi.org/10.1016/j.cherd.2012.07.007.
Balu S, Uma K, Pan GT, Yang TCK, Ramaraj SK. Degradation of Methylene blue in the presence of visible light using SiO2@α-Fe2O3 Nanocomposites Deposited on SnS2 Flower. Materials. 2018;11(6):1030-1047. http://dx.doi.org/10.3390/ma11061030
Dariani RS, Esmaeili A, Mortezaali A, Dehghanpour S. Photocatalytic reaction and degradation of methylene blue on TiO2 nano-siezed particles. Optik. 2016;127:7143-7154. http://dx.doi.org/10.1016/j.ijleo.2016.04.026.
Banerrjee S, Benjwal P, Singh M, Kar KK. Graphene Oxide (rGO) - metal Oxide (TiO2/Fe3O4) based nanocomposites for the removal of methylene blue. Appl. Surf. Sci. 2018;489:560-568. https://doi.org/10.1016/j.apsusc.2018.01.085.
Li Y, Du Q, Liu T, et al. Comparative study of methylene blue dye adsorption onto activated carbon, graphene oxide and carbon nano tubes. Chem Eng Res Des 2013;91:361-368. https://doi.org/10.1016/j.cherd.2012.07.007.
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