Facile hydrothermal synthesis of plasmonic photocatalyst Ag@AgCl and degradative photocatalysis under visible light irradiation

Abstract

We put forward a new approach for the synthesis of Ag@AgCl plasmonic photocatalyst via a hydrothermal-deposition-photoreduction method. The cetylmethylammonium chloride (CTAC) was used alone as both a source of reactants and surfactant. The structure of the prepared photocatalyst was determined by XRD, SEM, EDX and UV-Vis spectroscoscopy. The photocatalytic properties were investigated by degradation of an organic pollutant, Rhodamine B, under visible light irradiation. The results reveal that the experimental conditions have a great effect on the morphology of Ag@AgCl crystals. Ag@AgCl crystal is cubic and the Ag@AgCl sample which is photoreduced for 40 min exhibits the highest photoactivity, and 80.6 % RhB is degraded after irradiation for 2 hours using this catalyst. The high photocatalytic activity observed is attributed to the surface plasmon resonance effect of Ag nanoparticles.

Keywords

Ag@AgCl / hydrothermal / plasmonic photocatalyst / degradation

References

[1] Akhavan O Graphene Nanomesh by ZnO Nanorod Photocatalysts[J]. ACS Nano., 2010 4 174-4 180.

[2] Zhang J, Xu Q, Feng Z C Importance of the Relationship Between Surface Phases and Photocatalytic Ac-tivity of TiO₂[J]. Angew. Chem. Int. Ed., 2008 1 766-1 769.

[3] Esswein A J, Nocera D G Hydrogen Production by Molecuar Photocatalysis[J]. Chem. Rev., 2007 4 022-4 047.

[4] Deng Z, Chen M, Gu G A Facile Method to Fabricate ZnO Hollow Spheres and Their Photocatalytic Prop-erty[J]. Phys. Chem. B, 2008 16-22.

[5] Chen X, Mao S S Titanium Dioxide Nanomaterials: Synthesis, Properties, Modifications, and Applica-tions[J]. Chem. Rev., 2007 2 891-2 899.

[6] Zhou X M, Liu G, Yu J G Surface Plasmon Resonance-Mediated Photocatalysis by Noble Metal-Based Composites Under Visible Light [J]. J. Mater. Chem., 2012 21 337-21 354.

[7] Yu J G, Dai G P, Huang B B Fabrication and Characterization of Visible-Light-Driven Plasmonic Photo-catalyst Ag/AgCl/TiO₂ Nanotube Arrays [J]. Phys. Chem., 2009 16 394-16 401.

[8] Papavassiliou G C Optical Properties of Small Inorganic and Organic Metal Particles[J]. Prog. Solid State Chem., 1979 185-271.

[9] Bi Y P, Ye J H Heteroepitaxial Growth of Platinum Nanocrystals on AgCl Nanotubes Via Galvanic Re-placement Reaction[J]. Chem. Commun., 2010 1 532-1 534.

[10] Wang P, Huang B B, Lou Z Z Synthesis of Highly Efficient Ag@AgCl Plasmonic Photocatalysts with Various Structures[J]. Chem. Eur. J., 2010 538-544.

[11] Wang P, Huang B B, Lou Z Z Highly Efficient Visible Light Plasmonic Photocatalyst Ag@Ag(Br.I)[J]. Chem. Eur. J., 2010 538-44.

[12] Zhu Y Q, Liu H L, Yang L B Study on the Synthesis of Ag/AgCl Nanoparticles and Their Photocatalytic Properties[J]. Mater. Res. Bull., 2012 3 452-3 458.

[13] Xu H, Li H M, Xia J X, . One-Pot Synthesis of Visible-Light-Driven Plasmonic Photocatalyst Ag/AgCl in Ionic Liquid[J]. Mater. Interfaces, 2011 22-29.

[14] Yang Y Q, Zhang G K, Xu W Facile Synthesis and Photocatalytic Properties of Ag-AgCl-TiO₂/Rectorite Composite[J]. J. Colloid Interface Sci., 2012 217-223.

[15] Kuai L, Geng B, Chen X Facile Subsequently Light-Induced Route to Highly Eficient and Stable Sunlight-Driven Ag-AgBr Plasmonic Photocatalyst[J]. Langmuir., 2010 18 723-18 727.

[16] Lou Z Z, Huang B B, Qin X Y One-Step Synthesis of AgBr Microcrystals with Different Morphologies by ILs-Assisted Hydrothermal Method[J]. Cryst. Eng. Comm., 2011 1 789-1 793.

[17] Liao J, Zhang K, Wang L J Facile Hydrothermal Synthesis of Heart-Like Ag@AgCl with Enhanced Visible Light Photocatalytic Performance[J]. Mater. Lett., 2012 136-139.

[18] Guo J F, Ma B W, Yin A Y Highly Stable and Efficient Ag/AgCl@ TiO₂ Photocatalyst: Preparation, Charac-terization, and Application in the Treatment of Aqueous Hazardous Pollutants[J]. J. Hazard. Mater., 2012 77-82.

[19] Hu C, Lan Y Q, Qu J H Ag/AgBr/TiO₂ Visible Light Photocatalyst for Destruction of Azodyes and Bacte-ria[J]. Phys. Chem. B, 2006 4 066-4 072.

[20] Elahifard M R, Rahimnejad S, Haghighi S Apatite-Coated Ag/AgBr/TiO₂ Visible-Light Photocatalyst for Destruction of Bacteria[J]. J. Am. Chem. Soc., 2007 9 552-9 553.

[21] Tierno P, Goedel W A Using Electroless Deposition for the Preparation of Micron Sized Polymer/Metal Core/Shell Particles and Hollow Metal Spheres[J]. J. Phys. Chem. B., 2006 3 043-3 050.

[22] Wang D S, Duan Y D, Luo Q Z Visible Light Photocatalytic Activities of Plasmonic Ag/AgBr Particles Synthesized by a Double Jet Method [J]. Desalination, 2012 94-96.

[23] Xu H, Li H M, Xia J X One-Pot Synthesis of Visible-Light-Driven Plasmonic Photocatalyst Ag/AgCl in Ionic Liquid[J]. Mater. Interfaces, 2011 22-29.

[24] Soni S S, Henderson M J, Bardeau J F Visible-Light Photocatalysis in Titania-Based Mesoporous Thin Films[J]. Adv. Mater., 2008 1 493-1 498.

[25] Hoffmann M R, Martin S T, Choi W Environmental Applications of Semiconductor Photocatalysis[J]. Chem. Rev., 1995 69-96.