Modified hydrothermal synthesis and characterization of reduced graphene oxide-silver selenide nanocomposites with enhanced reactive oxygen species generation

doi:10.1016/S1872-2067(14)60275-8

Abstract

Abstract:

A visible-light photocatalyst containing Ag₂Se and reduced graphene oxide (RGO) was synthesized by a facile sonochemical-assisted hydrothermal method. X-ray diffraction, scanning electron microscopy with energy-dispersive X-ray analysis, and ultraviolet-visible diffuse reflectance spectroscopy results indicated that the RGO-Ag₂Se nanocomposite contained small crystalline Ag₂Se nanoparticles dispersed over graphene nanosheets and absorbed visible light. The high crystallinity of the nanoparticles increased photocatalytic activity by facilitating charge transport. N₂ adsorption-desorption measurements revealed that the RGO-Ag₂Se nanocomposite contained numerous pores with an average diameter of 9 nm, which should allow reactant molecules to readily access the Ag₂Se nanoparticles. The RGO-Ag₂Se nanocomposite exhibited higher photocatalytic activity than bulk Ag₂Se nanoparticles to degrade organic pollutant rhodamine B and industrial dye Texbrite BA-L under visible-light irradiation (λ > 420 nm). The generation of reactive oxygen species in RGO-Ag₂Se was evaluated through its ability to oxidize 1,5-diphenylcarbazide to 1,5-diphenylcarbazone. The small size of the Ag₂Se nanoparticles in RGO-Ag₂Se was related to the use of ultrasonication during their formation, revealing that this approach is attractive to form porous RGO-Ag₂Se materials with high photocatalytic activity under visible light.

Key words: Graphene, Silver selenide, Sonochemical method, Hydrothermal method, Rhodamine B, Texbrite BA-L

Lei Zhu, Shu Ye, Asghar Ali, Kefayat Ulla, Kwang Youn Cho, Won-Chun Oh. Modified hydrothermal synthesis and characterization of reduced graphene oxide-silver selenide nanocomposites with enhanced reactive oxygen species generation[J]. Chinese Journal of Catalysis, 2015, 36(4): 603-611.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(14)60275-8

https://www.cjcatal.com/EN/Y2015/V36/I4/603

References

[1] Ghosh T, Cho K Y, Ullah K, Nikam V, Park C Y, Meng Z D, Oh W C. J Ind Eng Chem, 2013, 19: 797
[2] Helmes C T, Sigman C C, Fung V A, Thompson K, Doeltz M K, Mackie M, Klein T E, Lent D. J Environ Sci Health A, 1984, 19: 97
[3] Pazarbasi M B, Kocyigit A, Ozdemir G, Yasa I, Karaboz I. Fresen Environ Bull, 2012, 21: 1410
[4] Rauf M A, Meetani M A, Khaleel A, Ahmed A. Chem Eng J, 2010, 157: 373
[5] Aliabadi M, Ghahremani H, Izadkhah F, Sagharigar T. Fresen Environ Bull, 2012, 21: 2120
[6] Das V D, Karunakaran D. Phys Rev B, 1989, 39: 10872
[7] Cao H Q, Xiao Y J, Lu Y X, Yin J F, Li B J, Wu S S, Wu X M. Nano Res, 2010, 3: 863
[8] Haubner K, Murawski J, Olk P, Eng L M, Ziegler C, Adolphi B, Jaehne E. Chem Phys Chem, 2010, 11: 2131
[9] Lupo F, Kamalakaran R, Scheu C, Grobert N, Rühle M. Carbon, 2004, 42: 1995
[10] Zhang X Y, Li H P, Cui X L, Lin Y H. J Mater Chem, 2010, 20: 2801
[11] Abdullah A Z, Ling P Y. J Hazard Mater, 2010, 173: 159
[12] Khallaf H, Chen C T, Chang L B, Lupan O, Dutta A, Heinrich H, Shenouda A, Chow L. Appl Surf Sci, 2011, 257: 9237
[13] Wu N, Losovyj Y B, Wisbey D, Belashchenko K, Manno M, Wang L, Leighton C, Dowben P A. J Phys Condens Matter, 2007, 19: 156
[14] Nilsun H I, Gökce T G. Ultrasonics, 2004, 42: 591
[15] Tai G A, Guo W L. Ultrason Sonochem, 2008, 15: 350
[16] Meng Z D, Zhu L, Oh W C. J Ind Eng Chem, 2012, 18: 2004
[17] Zhu L, Ghosh T, Park C Y, Meng Z D, Oh W C. Chin J Catal (催化学报), 2012, 33: 1276
[18] Oh W C, Zhang F J. Asia J Chem, 2011, 23: 875
[19] Chen X J, Xu H H, Wang Y J, Hu S, Zhang Z X, Zhang Y M. Agric Sci China, 2007, 6: 458
[20] Yang X Y, Zhang X Y, Ma Y F, Huang Y, Wang Y S, Chen Y S. J Mater Chem, 2009, 19: 2710
[21] Chen G Y, Wang D J, Liang C, Wei Z Y, Zhang W X, Liang J C, Wang D M. Rare Metal Mater Eng, 2012, 41: 1153
[22] Yu C C, Yu M, Li C X, Zhang C M, Yang P P, Lin J. Cryst Growth Des, 2009, 9: 783
[23] Oh W C, Chen M L, Zhang K, Zhang F J, Jang W K, Zhang F J. J Korean Phys Soc, 2010, 56: 1097
[24] Zhan Y Q, Meng F B, Lei Y J, Zhao R, Zhong J C, Liu X B. Mater Lett, 2011, 65: 1737
[25] Shigesato Y, Murayama A, Kamimori T, Matsuhiro K. Appl Surf Sci, 1988, 33: 804
[26] Krings L H M, Talen W. Sol Energy Mater Sol Cells, 1998, 54: 27
[27] Chen R Z, Xu D S, Guo G L, Tang Y Q. J Mater Chem, 2002, 12: 1437
[28] Wuttig M. Nat Mater, 2005, 4: 265
[29] Schoen D T, Xie C, Cui Y. J Am Chem Soc, 2007, 129: 4116
[30] Meng Z D, Ullah K, Zhu L, Ye S, Oh W C. Mater Sci Semicon Proc, 2014, 27: 173
[31] Low J X, Yu J G, Li Q, Cheng B. Phys Chem Chem Phys, 2014, 16: 1111
[32] Meng Z D, Ghosh T, Zhu L, Choi J G, Park C Y, Oh W C. J Mater Chem, 2012, 22: 16127
[33] Munter R. Proc Estonian Acad Sci Chem, 2001, 50: 59