Enhanced optical, visible light catalytic and electrochemical properties of Au@TiO2 nanocomposites

Mohammad Mansoob Khan; Sajid Ali Ansari; Jintae Lee; Moo Hwan Cho

Journal of Industrial and Engineering Chemistry, Vol.19, No.6, 1845-1850, November, 2013

DOI10.1016/j.jiec.2013.02.030 Export Citation

Enhanced optical, visible light catalytic and electrochemical properties of Au@TiO2 nanocomposites

Mohammad Mansoob Khan, Sajid Ali Ansari, Jintae Lee, and Moo Hwan Cho^†

School of Chemical Engineering, Yeungnam University, Gyeongsan-si, Gyeongbuk 712-749, South Korea

E-mail:

Au@TiO2 nanocomposites and pure TiO2 were successfully used to know the effect of Au on TiO2 and their comparative optical, visible light catalytic and electrochemical activities were investigated. Optical parameters such as band gap energy (Eg = 2.4 eV), absorption coefficient (α), refractive index (n) and dielectric constants (s) have been determined using different methods. Visible light (l = ~590 nm) catalytic activity of Au@TiO2 nanocomposites was performed for reducing methyl orange (MO) under visible light irradiation. CV, EIS and DPV studies demonstrate that Au@TiO2 nanocomposites exhibit redox behavior, charged its surface by accumulating electrons, store and release the electrons.

Keywords:Optical properties;Visible light;Heterogeneous catalysis;Electrochemical studies;Nanocomposites

[References]

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[Referenced By]

[1] Ikeda S, Sugiyama N, Pal B, Marci G, Palmisano L, Noguchi H, Uosaki K, Ohtani B, Physical Chemistry Chemical Physics., 3, 267 (2001)

[2] Ismail AA, Bahnemann DW, Bannat I, Wark M, Journal of Physical Chemistry C., 113, 7429 (2009)

[3] Eustis S, El-Sayed MA, Chemical Society Reviews., 35, 209 (2006)

[4] Li W, Li D, Xian J, Chen W, Hu Y, Shao Y, Fu X, Journal of Physical Chemistry C., 114, 21482 (2010)

[5] Li HX, Bian ZF, Zhu J, Huo YN, Li H, Lu YF, J. Am. Chem. Soc., 129(15), 4538 (2007)

[6] Silva CG, Juarez R, Marino T, Molinari R, Garcia H, J. Am. Chem. Soc., 133(3), 595 (2011)

[7] Subramanian V, Wolf EE, Kamat PV, Langmuir, 19(2), 469 (2003)

[8] Chou CS, Yang RY, Yeh CK, Lin YJ, Powder Technol., 194(1-2), 95 (2009)

[9] Yang J, Chen CC, Ji HW, Ma WH, Zhao JC, J. Phys. Chem. B, 109(46), 21900 (2005)

[10] Chen J, Su H, Song F, Moon WJ, Kim YS, Zhang D, Journal of Colloids and Interface Science., 370, 117 (2012)

[11] Thomas J, Yoon M, Applied Catalysis B: Environmental., 111-112, 502 (2012)

[12] Xiao Q, Zhang J, Xiao C, Si Z, Tan X, Solar Energy., 82, 706 (2008)

[13] Silva CG, Juarez R, Marino T, Molinari R, Garcia H, J. Am. Chem. Soc., 133(3), 595 (2011)

[14] Chen XB, Liu L, Yu PY, Mao SS, Science, 331(6018), 746 (2011)

[15] May RA, Patel MN, Johnston KP, Stevenson KJ, Langmuir, 25(8), 4498 (2009)

[16] Hashmi ASK, Hutchings GJ, Angewandte Chemie International Edition., 45, 7896 (2006)

[17] Carregal-Romero S, Perez-Juste J, Herves P, Liz-Marzan LM, Mulvaney P, Langmuir, 26(2), 1271 (2010)

[18] Corma A, Gracia H, Chemical Society Reviews., 37, 2096 (2008)

[19] Primo A, Corma A, Gracia H, Physical Chemistry Chemical Physics., 13, 886 (2011)

[20] Diebold U, Surface Science Reports., 48, 53 (2003)

[21] Selhofer H, Thin Films., 2, 15 (1999)

[22] Sambrano JR, Andres J, Beltran A, Sensato FR, Leite FR, Stamato FMLG, Longo E, International Journal of Quantum Chemistry., 65, 625 (1997)

[23] Khan MM, Kalathil S, Lee J, Cho MH, Bulletin of the Korean Chemical Society., 33, 1753 (2012)

[24] Lopez R, Gomez R, Journal of Sol.Gel Science and Technology., 61, 1 (2012)

[25] Chen Y, Gu X, Nie CG, Jiang ZY, Xie ZX, Lin CJ, Chemical Communications., 33(418), 1 (2005)

[26] Li X, Fan T, Zhou H, Zhu B, Ding J, Zhang D, Microporous and Mesoporous Materials., 116, 478 (2008)

[27] Yang L, Li GH, Zhang LD, Applied Physics Letters., 76, 1537 (2000)

[28] Jakob M, Levanon H, Kamat PV, Nano Letters., 3, 353 (2003)

[29] Loganathan K, Bommusamy P, Muthaiahpillai P, Velayutham M, Environmental Engineering Research., 16, 81 (2011)

[30] Tauc J, Grigorovici R, Vanuc A, Physica Status Solidi., 15, 627 (1966)

[31] Khan MA M, Khan MW, Alhoshan M, Alsalhi MS, Aldwayyan AS, Applied Physics A., 100, 45 (2010)

[32] Shimakawa K, Narushima S, Hosono S, Kawazoe H, Philosophical Magazine Letters., 79, 755 (1999)

[33] Wemple SH, DiDomenico M, Physical Review B., 3, 1338 (1971)

[34] Sahu N, Parida KM, Kinetics and Catalysis., 53, 197 (2012)

[35] Hosseini M, Momeni MM, Journal of Solid State Electrochemistry., 14, 1109 (2010)

[36] Hosseini MG, Faraji M, Momeni MM, Thin Solid Films, 519(11), 3457 (2011)

[37] Nam SH, Shim HS, Kim YS, Dar MA, Kim JG, Kim WB, ACS Applied Materials & Interfaces., 2, 2046 (2010)

[38] Murray RW, Chem. Rev., 108(7), 2688 (2008)

[39] Chen S, Ingram RS, Hostetler MJ, Pietron JJ, Murray RW, Schaaff TJ, Khoury JT, Alvarez MM, Whetten RL, Science., 280, 2098 (1998)