Abstract
A new composite photocatalyst AgBr/BiOBr was prepared by loading AgBr on a BiOBr substrate via deposition-precipitation and characterized by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy and UV-vis diffuse reflectance spectroscopy. The as-prepared AgBr/BiOBr comprised face-centered cubic AgBr and tetragonal BiOBr particles. The average crystalline sizes of AgBr in the AgBr/BiOBr composites were less than 28.5 nm. The absorption edges of AgBr/BiOBr in visible-light region had a red shift with increasing AgBr content. Photocatalytic degradation of methyl orange results show that the AgBr/BiOBr composites could degrade methyl orange efficiently under visible-light irradiation (λ>420 nm). The optimal molar percentage of AgBr was 50 mol% with corresponding maximum k app of 0.00619 min−1. Active ·O −2 played a major role for methyl orange degradation while h+ and ·OH had little effect on the photocatalytic process. The enhancement of photocatalytic activity of AgBr/BiOBr is mainly ascribed to the heterojunction effect between AgBr and BiOBr.
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References
Inumaru K, Murashima M, Kasahara T, et al. Enhanced photocatalytic decomposition of 4-nonylphenol by surface-organografted TiO2: A combination of molecular selective adsorption and photocatalysis. Appl Catal B: Environ. 2004, 52: 275–280
Yamazakia S, Moria T, Katoua T, et al. Photocatalytic degradation of 4-tert-octylphenol in water and the effect of peroxydisulfate as additives. J Photochem Photobiol A: Chem. 2008, 199: 330–335
Tsai W T, Lee M K, Su T Y, et al. Photodegradation of bisphenol-A in a batch TiO2 suspension reactor. J Hazard Mater. 2009, 168: 269–275
Wang R, Ren D, Xia S, et al. Photocatalytic degradation of bisphenol A (BPA) using immobilized TiO2 and UV illumination in a horizontal circulating bed photocatalytic reactor (HCBPR). J Hazard Mater. 2009, 169: 926–932
Zhao W, Ma W H, Chen C C, et al. Efficient degradation of toxic organic pollutants with Ni2O3/TiO2−x Bx under visible irradiation. J Am Chem Soc. 2004, 126: 4782–4783
Yu J C, Ho W K, Yu J G, et al. Efficient visible-light-induced photocatalytic disinfection on sulfur-doped nanocrystalline titania. Environ Sci Technol. 2005, 39: 1175–1179
Ho W, Yu J C, Lee S C. Low-temperature hydrothermal synthesis of S-doped TiO2 with visible light photocatalytic activity. J Solid State Chem. 2006, 179: 1171–1176
Sun Q, Xu Y M. Sensitization of TiO2 with aluminum phthalocyanine: Factors influencing the efficiency for chlorophenol degradation in water under visible light. J Phys Chem C. 2009, 113: 12387–12394
Arabatzis I M, Stergiopoulos T, Bernard M C, et al. Silver modified titanium dioxide thin films for efficient photodegradation of methyl orange. Appl Catal B: Environ. 2003, 42: 187–201
Ishibai Y, Sato J, Nishikawa T, et al. Synthesis of visible-light active TiO2 photocatalyst with Pt-modification: Role of TiO2 substrate for high photocatalytic activity. Appl Catal B: Environ. 2008, 79: 117–121
Li G S, Zhang D Q, Yu J C. Ordered mesoporous BiVO4 through anocasting: A superior visible light-driven photocatalyst. Chem Mater. 2008, 20: 3983–3992
Tang J W, Zou Z G, Ye J H. Effects of substituting Sr2+ and Ba2+ for Ca2+ on the structural properties and photocatalytic behaviors of CaIn2O4. Chem Mater. 2004, 16: 1644–1649
Yamasita D, Takata T, Hara M, et al. Recent progress of visible-light-driven heterogeneous photocatalysts for overall water splitting. Solid State Ionics. 2004, 172: 591–595
Shi R, Lin J, Wang Y J, et al. Visible-light photocatalytic degradation of BiTaO4 photocatalyst and mechanism of photocorrosion suppression. J Phys Chem C. 2010, 114: 6472–6477
Shang M, Wang W Z, Zhang L. Preparation of BiOBr lamellar structure with high photocatalytic activity by CTAB as Br source and template. J Hazard Mater. 2009, 167: 803–809
Zhang J, Shi F J, Lin J, et al. Self-assembled 3-D architectures of BiOBr as a visible light-driven photocatalyst. Chem Mater. 2008, 20: 2937–2941
Zhang X, Ai Z H, Jia F L, et al. Generalized one-pot synthesis, characterization and photocatalytic activity of hierarchical BiOX (X=Cl, Br, I) nanoplate microspheres. J Phys Chem C. 2008, 112: 747–753
Jiang Z, Yang F, Yang G D, et al. The hydrothermal synthesis of BiOBr flakes for visible-light-responsive photocatalytic degradation of methyl orange. J Photochem Photobiol A: Chem. 2010, 212: 8–13
Chang X F, Huang J, Cheng C, et al. BiOX (X=Cl, Br, I) photocatalysts prepared using NaBiO3 as the Bi source: Characterization and catalytic performance. Catal Commun. 2010, 11: 460–464
An H Z, Du Y, Wang T M, et al. Photocatalytic properties of BiOX (X=Cl, Br, and I). Rare Metals. 2008, 27: 243–250
Wang W D, Huang F Q, Lin X P, et al. Visible-light-responsive photocatalysts xBiOBr-(1−x)BiOI. Catal Commun. 2008, 9: 8–12
Henle J, Simon P, Frenzel A, et al. Nanosized BiOX (X=Cl, Br, I) particles synthesized in reverse microemulsions. Chem Mater. 2007, 19: 366–373
Zhang X, Zhang L Z, Xie T F, et al. Low-temperature synthesis and high visible-light-induced photocatalytic activity of BiOI/TiO2 heterostructures. J Phys Chem C. 2009, 113: 7371–7378
Cheng H F, Huang B B, Dai Y, et al. One-step synthesis of the nanostructured AgI/BiOI composites with highly enhanced visible-light photocatalytic performances. Langmuir. 2010, 26: 6618–6624
Li Y Y, Wang J S, Yao H C, et al. Chemical etching preparation of BiOI/Bi2O3 heterostructures with enhanced photocatalytic activities. Catal Commun. 2011, 12: 660–664
Chang X F, Yu G, Huang J, et al. Enhancement of photocatalytic activity over NaBiO3/BiOCl composite prepared by an in situ formation strategy. Catal Today. 2010, 153: 193–199
Zhang L, Wang W Z, Zhou L, et al. Fe3O4 coupled BiOCl: A highly efficient magnetic photocatalyst. Appl Catal B: Environ. 2009, 90: 458–462
Chai S Y, Kim Y J, Jung M H, et al. Heterojunctioned BiOCl/Bi2O3, a new visible light photocatalyst. J Catal. 2009, 262: 144–149
Shamaila S, Sajjad A K L, Chen F, et al. WO3/BiOCl, a novel heterojunction as visible light photocatalyst. J Colloid Interface Sci. 2011, 356: 465–472
Kakuta N, Goto N, Ohkita H, et al. Silver bromide as a photocatalyst for hydrogen generation from CH3OH/H2O solution. J Phys Chem B. 1999, 103: 517–519
Hu C, Lan Y Q, Qu J H, et al. Ag/AgBr/TiO2 visible light photocatalyst for destruction of azodyes and bacteria. J Phys Chem B. 2006, 110: 4066–4072
Lan Y Q, Hu C, Hu X X, et al. Efficient destruction of pathogenic bacteria with AgBr/TiO2 under visible light irradiation. Appl Catal B: Environ. 2007, 73: 354–360
Elahifard M R, Rahimnejad S, Haghighi S, et al. Apatite-coated Ag/AgBr/TiO2 visible-light photocatalyst for destruction of bacteria. J Am Chem Soc. 2007, 129: 9552–9553
Zang Y J, Ramin F. Photocatalytic activity of AgBr/TiO2 in water under simulated sunlight irradiation. Appl Catal B: Environ. 2008, 79: 334–340
Pourahmad A, Sohrabnezhad S, Kashefian E. AgBr/nanoAlMCM-41 visible light photocatalyst for degradation of methylene blue dye. Spectrochim Acta Part A. 2010, 77: 1108–1114
Zhou X F, Hu C, Hu X X, et al. Plasmon-assited degradation of toxic pollutions with Ag-AgBr/Al2O3 under visible-light irradiation. J Phys Chem C. 2010, 114: 2746–2750
Rodrigues S, Uma S, Martyanov I N, et al. AgBr/Al-MCM-41 visible-light photocatalyst for gas-phase decomposition of CH3CHO. J Catal. 2005, 233: 405–410
Zang Y J, Farnood R, Currie J. Photocatalytic activities of AgBr/Y-zeolite in water under visible light irradiation. Chem Eng Sci. 2009, 64: 2881–2886
Li G T, Wong H K, Zhang X W, et al. Degradation of acid orange 7 using magnetic AgBr under visible light: The roles of oxidizing species. Chemosphere. 2009, 76: 1185–1191
Wang P, Huang B B, Qin X Y, et al. Ag/AgBr/WO3·H2O: Visible-light photocatalyst for bacteria destruction. Inorg Chem. 2009, 48: 10697–10702
Zhang L S, Wong K H, Chen Z G, et al. AgBr-Ag-Br2WO6 nanojunction system: A novel and efficient photocatalyst with double visible-light active components. Appl Catal A: Gen. 2009, 363: 211–229
Zhang L S, Wong K H, Yip H Y, et al. Effective photocatalytic disinfection of E. coli K-12 using AgBr-Ag-Bi2WO6 nanojunction system irradiated by visible light: The role of diffusing hydroxyl radicals. Environ Sci Technol. 2010, 44: 1392–1398
Asi M A, He C, Su M H, et al. Photocatalytic reduction of CO2 to hydrocarbons using AgBr/TiO2 nanocomposites under visible light. Catal Today. 2011, 175: 256–263
Cao J, Luo B D, Lin H L, et al. Photocatalytic activity of novel AgBr/WO3 composite photocatalyst under visible light irradiation for methyl orange degradation. J Hazard Mater. 2011, 190: 700–706
Victora R H. Calculated electronic structure of silver halide crystals. Phys Rev B. 1997, 56: 4417–4421
Cheng H F, Huang B B, Wang P, et al. In situ ion exchange synthesis of the novel Ag/AgBr/BiOBr hybrid with highly efficient decontamination of pollutants. Chem Commun. 2011, 47: 7054–7056
Galceran M, Pujol M C, Zaldo C, et al. Synthesis, structural, and optical properties in monoclinic Er:KYb(WO4)2 nanocrystals. J Phys Chem C. 2009, 113: 15497–15506
Jiang R, Zhu H Y, Li X D, et al. Visible light photocatalytic decolourization of C. I. Acid Red 66 by chitosan capped CdS composite nanoparticles. Chem Eng J, 2009, 152: 537–542
Dong X, Ding W, Zhang X, et al. Mechanism and kinetics model of degradation of synthetic dyes by UV-vis/H2O2/Freeioxallate complexes. Dye Pigments. 2007, 74: 470–476
Li Y, Li X, Li J, et al. Photocatalytic degradation of methyl orange by TiO2-coated activated carbon and kinetic study. Water Res. 2006, 40: 1119–1126
Sun J H, Wang X L, Sun J Y, et al. Photocatalytic degradation and kinetics of Orange G using nano-sized Sn(IV)/TiO2/AC photocatalyst. J Mol Catal A: Chem. 2006, 260: 241–246
Wu C, Chang H, Chen J. Basic dye decomposition kinetics in a photocatalytic slurry reactor. J Hazard Mater. 2006, 137: 336–343
Zhang N, Liu S Q, Fu X Z, et al. Synthesis of M@TiO2 (M=Au, Pd, Pt) core-shell nanocomposites with tunable photoreactivity. J Phys Chem C. 2011, 115: 9136–9145
Butler M A, Ginley D S. Prediction of flatband potentials at semiconductor-electrolyte interfaces from atomic electronegativities. J Electrochem Soc. 1978, 125: 228–232
Chang X F, Huang J, Tan Q Y, et al. Photocatalytic degradation of PCP-Na over BiOI nanosheets under simulated sunlight irradiation. Catal Commun. 2009, 10: 1957–1961
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Lin, H., Cao, J., Luo, B. et al. Visible-light photocatalytic activity and mechanism of novel AgBr/BiOBr prepared by deposition-precipitation. Chin. Sci. Bull. 57, 2901–2907 (2012). https://doi.org/10.1007/s11434-012-5260-6
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DOI: https://doi.org/10.1007/s11434-012-5260-6