Photocatalytic degradation characteristics of heterojunction SnO2-CuxO nanopowders of methylene blue under UV light

Kiryung Eom; Il Han Yoo; Shankara Sharanappa Kalanur; Hyungtak Seo

Korean Journal of Chemical Engineering, Vol.38, No.3, 617-623, March, 2021

DOI10.1007/s11814-020-0700-5 Export Citation

Photocatalytic degradation characteristics of heterojunction SnO2-CuxO nanopowders of methylene blue under UV light

Kiryung Eom¹, Il Han Yoo¹, Shankara Sharanappa Kalanur^{2, †}, and Hyungtak Seo^{1, 3, †}

¹Department of Energy Systems Research, Ajou University, Suwon 16499, Korea
²Department of Materials Science and Engineering, Ajou University, Suwon 16499, Korea
³Department of Materials Science and Engineering,, Ajou University, Suwon 16499, Korea

E-mail:,

p-n heterojunction was constructed using p-type Cupric oxide (CuO) and n-type Tin (IV) oxide (SnO2) nanoparticles using chemical synthesis and annealing method. The synthesized SnO2-CuO nanoparticles were characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), etc. The methylene blue (MB) degradation ability of the synthesized SnO2-CuO nanocomposite was investigated under UV illumination. Compared to the undoped SnO2, the SnO2-CuO p-n heterojunction exhibited enhanced MB degradation capability due the effective separation of electron-holes pair that suppresses the recombination. Based on the experimental results, the charge dynamics and the probable dye degradation mechanism via SnO2-CuO nanoparticles was proposed.

Keywords:SnO2;CuO;Photocatalyst;Heterojunction;Nanoparticles

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[2] Zheng XJ, Wei YJ, Wei LF, Xie B, Wei MB, Int. J. Hydrog. Energy, 35(21), 11709 (2010)

[3] Khairol NF, Sapawe N, Danish M, Mater. Today: Proceedings, 19, 1333 (2019)

[4] Shivaramu PD, Patil A, Murthy M, Tubaki S, Shastri M, Manjunath S, Gangaraju V, Rangappa D, Mater. Today: Proceedings, 4, 12314 (2017)

[5] Xia HI, Zhuang HS, Zhang T, Xiao DC, J. Environ. Sci., 19, 1141 (2007)

[6] Enesca A, Isac L, Duta A, Thin Solid Films, 542, 31 (2013)

[7] Bessekhouad Y, Robert D, Weber J, J. Photochem. Photobiol. A-Chem., 163, 569 (2004)

[8] Kohtani S, Tomohiro M, Tokumura K, Nakagaki R, Appl. Catal. B: Environ., 58(3-4), 265 (2005)

[9] Mamaghani AH, Haghighat F, Lee CS, Appl. Catal. B: Environ., 203, 247 (2017)

[10] Zaleska A, Recent Patents on Eng., 2, 157 (2008).

[11] Ahmad M, Ahmed E, Zhang YW, Khalid NR, Xu JF, Ullah M, Hong ZL, Curr. Appl. Phys., 13(4), 697 (2013)

[12] Dozzi MV, Selli E, J. Photochem. Photobiol. C: Photochem. Rev., 14, 13 (2013).

[13] Gavade NL, Babar SB, Kadam AN, Gophane AD, Garadkar KM, Ind. Eng. Chem. Res., 56(49), 14489 (2017)

[14] Kumar R, Kumar G, Umar A, Mater. Lett., 97, 100 (2013)

[15] Lee J, Lee Y, Youn JK, Na HB, Yu T, Kim H, Lee SM, Koo YM, Kwak JH, Park HC, Small, 4, 143 (2008)

[16] Lin C, Song Y, Cao L, Chen S, J. Chin. Adv. Mater. Soc., 1, 188 (2013)

[17] Saravanan R, Karthikeyan S, Gupta V, Sekaran G, Narayanan V, Stephen A, Mater. Sci. Eng. C-Biomimetic Supramol. Syst., 33, 91 (2013)

[18] Mounkachi O, Salmani E, Lakhal M, Ez-Zahraouy H, Hamedoun M, Benaissa M, Kara A, Ennaoui A, Benyoussef A, Sol. Energy Mater. Sol. Cells, 148, 34 (2016)

[19] Babu B, Kadam A, Ravikumar R, Byon C, J. Alloy. Compd., 703, 330 (2017)

[20] Leontyev IN, Chernyshov DY, Guterman VE, Pakhomova EV, Guterman AV, Appl. Catal. A: Gen., 357(1), 1 (2009)

[21] Thanh NTK, Maclean N, Mahiddine S, Chem. Rev., 114(15), 7610 (2014)

[22] Uddin MT, Nicolas Y, Olivier C, Toupance T, Servant L, Muller MM, Kleebe HJ, Ziegler J, Jaegermann W, Inorg. Chem., 51(14), 7764 (2012)

[23] Poulston S, Parlett P, Stone P, Bowker M, Surf. Interface Anal., 24, 811 (1996)

[24] Chen W, Li Q, Gan H, Zeng W, Adv. Appl. Ceram.., 113, 139 (2014)

[25] Chuai M, Chen X, Zhang K, Zhang J, Zhang M, J. Mater. Chem. A, 7, 1160 (2019)