Selective growth of Ag3PO4 submicro-cubes on Ag nanowires to fabricate necklace-like heterostructures for photocatalytic applications

Selective growth of Ag3PO4 submicro-cubes on Ag nanowires to construct necklace-like hetero-photocatalysts has been demonstrated. This novel hetero-structure exhibits much higher activities than both pure Ag3PO4 cubes and Ag nanowires for degradation of organic contaminants under visible light irradiation, which may be primarily ascribed to highly efficient charge separation at the contact interfaces as well as rapid electron export through Ag nanowires.

[1]  J. Hemminger,et al.  Photodeposition of Ag or Pt onto TiO2 nanoparticles decorated on step edges of HOPG. , 2011, ACS nano.

[2]  Shuxin Ouyang,et al.  Photocatalytic and photoelectric properties of cubic Ag3PO4 sub-microcrystals with sharp corners and edges. , 2012, Chemical communications.

[3]  P. Kamat PHOTOCHEMISTRY ON NONREACTIVE AND REACTIVE (SEMICONDUCTOR) SURFACES , 1993 .

[4]  Hui Yang,et al.  An orthophosphate semiconductor with photooxidation properties under visible-light irradiation. , 2010, Nature materials.

[5]  Shuxin Ouyang,et al.  Nano‐photocatalytic Materials: Possibilities and Challenges , 2012, Advanced materials.

[6]  H. Fu,et al.  Preparation and Characterization of Stable Biphase TiO2 Photocatalyst with High Crystallinity, Large Surface Area, and Enhanced Photoactivity , 2008 .

[7]  A. J. Bhattacharyya,et al.  Extremely High Silver Ionic Conductivity in Composites of Silver Halide (AgBr, AgI) and Mesoporous Alumina , 2006 .

[8]  Jinhua Ye,et al.  Efficient photocatalytic decomposition of organic contaminants over CaBi2O4 under visible-light irradiation. , 2004, Angewandte Chemie.

[9]  T. Hyeon,et al.  Colloidal Synthesis of Ultrathin Two‐Dimensional Semiconductor Nanocrystals , 2011, Advanced materials.

[10]  Xitao Wang,et al.  Photoluminescence and photocatalysis of the flower-like nano-ZnO photocatalysts prepared by a facile hydrothermal method with or without ultrasonic assistance , 2011 .

[11]  Shikuan Yang,et al.  Controllable Pt/ZnO Porous Nanocages with Improved Photocatalytic Activity , 2008 .

[12]  Taeghwan Hyeon,et al.  Nanorod‐Based Dye‐Sensitized Solar Cells with Improved Charge Collection Efficiency , 2008 .

[13]  Eiichi Kojima,et al.  Light-induced amphiphilic surfaces , 1997, Nature.

[14]  P. Kamat,et al.  Charge Distribution between UV-Irradiated TiO2 and Gold Nanoparticles: Determination of Shift in the Fermi Level , 2003 .

[15]  Chao Ma,et al.  Synthesis and characterization of high efficiency and stable Ag3PO4/TiO2 visible light photocatalyst for the degradation of methylene blue and rhodamine B solutions , 2012 .

[16]  Ying Dai,et al.  Highly efficient visible-light plasmonic photocatalyst Ag@AgBr. , 2009, Chemistry.

[17]  Jinhua Ye,et al.  Efficient photocatalytic decomposition of acetaldehyde over a solid-solution perovskite (Ag0.75Sr0.25)(Nb0.75Ti0.25)O3 under visible-light irradiation. , 2008, Journal of the American Chemical Society.

[18]  R. Amal,et al.  Reduced graphene oxide as a solid-state electron mediator in Z-scheme photocatalytic water splitting under visible light. , 2011, Journal of the American Chemical Society.

[19]  P. Lianos,et al.  Production of electricity by photoelectrochemical oxidation of ethanol in a PhotoFuelCell , 2010 .

[20]  Jinhua Ye,et al.  Nitrogen‐doped Lamellar Niobic Acid with Visible Light‐responsive Photocatalytic Activity , 2008 .

[21]  Hua Wang,et al.  A facile way to rejuvenate Ag3PO4 as a recyclable highly efficient photocatalyst. , 2012, Chemistry.

[22]  Jinhua Ye,et al.  Heteroepitaxial growth of platinum nanocrystals on AgCl nanotubes via galvanic replacement reaction. , 2010, Chemical communications.

[23]  S. Neophytides,et al.  Silver-modified titanium dioxide thin films for efficient photodegradation of methyl orange , 2003 .

[24]  Prashant V Kamat,et al.  Charge separation and catalytic activity of Ag@TiO2 core-shell composite clusters under UV-irradiation. , 2005, Journal of the American Chemical Society.

[25]  Xiaoyan Qin,et al.  Ag@AgCl: a highly efficient and stable photocatalyst active under visible light. , 2008, Angewandte Chemie.

[26]  A. Fujishima,et al.  Electrochemical Photolysis of Water at a Semiconductor Electrode , 1972, Nature.

[27]  Kangnian Fan,et al.  Dependence of Ag Deposition Methods on the Photocatalytic Activity and Surface State of TiO2 with Twistlike Helix Structure , 2009 .

[28]  E. Wolf,et al.  Green emission to probe photoinduced charging events in ZnO-Au nanoparticles. Charge distribution and fermi-level equilibration , 2003 .

[29]  H. Tada,et al.  Drastic enhancement of TiO2-photocatalyzed reduction of nitrobenzene by loading Ag clusters. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[30]  W. Cai,et al.  ZnO Hierarchical Micro/Nanoarchitectures: Solvothermal Synthesis and Structurally Enhanced Photocatalytic Performance , 2008 .

[31]  T. Hyeon,et al.  Synthesis of uniform goethite nanotubes with parallelogram cross section. , 2007, Journal of the American Chemical Society.

[32]  Can Li,et al.  Enhancement of photocatalytic H2 evolution on CdS by loading MoS2 as Cocatalyst under visible light irradiation. , 2008, Journal of the American Chemical Society.

[33]  T. Kanda,et al.  Preparation of highly dispersed core/shell-type titania nanocapsules containing a single Ag nanoparticle. , 2006, Journal of the American Chemical Society.

[34]  Tetsu Tatsuma,et al.  Mechanisms and applications of plasmon-induced charge separation at TiO2 films loaded with gold nanoparticles. , 2005, Journal of the American Chemical Society.

[35]  T. Tatsuma,et al.  Photocatalytic remote oxidation with various photocatalysts and enhancement of its activity , 2005 .

[36]  K. Domen,et al.  Oxysulfide Sm2Ti2S2O5 as a Stable Photocatalyst for Water Oxidation and Reduction under Visible Light Irradiation (λ ≤ 650 nm) , 2002 .

[37]  N. Umezawa,et al.  Facet effect of single-crystalline Ag3PO4 sub-microcrystals on photocatalytic properties. , 2011, Journal of the American Chemical Society.

[38]  H. Ming,et al.  Carbon quantum dots/Ag3PO4 complex photocatalysts with enhanced photocatalytic activity and stability under visible light , 2012 .

[39]  P. Kamat Meeting the Clean Energy Demand: Nanostructure Architectures for Solar Energy Conversion , 2007 .

[40]  H. Fu,et al.  Effects of simultaneously doped and deposited Ag on the photocatalytic activity and surface states of TiO2. , 2005, The journal of physical chemistry. B.

[41]  Shuxin Ouyang,et al.  Facile synthesis of rhombic dodecahedral AgX/Ag3PO4 (X = Cl, Br, I) heterocrystals with enhanced photocatalytic properties and stabilities. , 2011, Physical chemistry chemical physics : PCCP.

[42]  E. Wolf,et al.  Catalysis with TiO2/gold nanocomposites. Effect of metal particle size on the Fermi level equilibration. , 2004, Journal of the American Chemical Society.

[43]  Jin Zou,et al.  Anatase TiO2 single crystals with a large percentage of reactive facets , 2008, Nature.

[44]  Can Li,et al.  Importance of the relationship between surface phases and photocatalytic activity of TiO2. , 2008, Angewandte Chemie.

[45]  Chuncheng Chen,et al.  Efficient degradation of toxic organic pollutants with Ni2O3/TiO(2-x)Bx under visible irradiation. , 2004, Journal of the American Chemical Society.

[46]  M. Gholami,et al.  Apatite-coated Ag/AgBr/TiO(2) visible-light photocatalyst for destruction of bacteria. , 2007, Journal of the American Chemical Society.

[47]  Cao-Thang Dinh,et al.  Large-scale synthesis of uniform silver orthophosphate colloidal nanocrystals exhibiting high visible light photocatalytic activity. , 2011, Chemical communications.

[48]  S. Ono,et al.  Electronic structure and diffusion paths of Ag ions in rocksalt structured AgI , 2007 .

[49]  M. Barteau,et al.  Preparation of highly uniform Ag/TiO2 and Au/TiO2 supported nanoparticle catalysts by photodeposition. , 2005, Langmuir : the ACS journal of surfaces and colloids.

[50]  W. Park,et al.  Photocatalysis Using ZnO Thin Films and Nanoneedles Grown by Metal–Organic Chemical Vapor Deposition , 2004 .

[51]  V. Rives,et al.  Inorganic gels as precursors of TiO2 photocatalysts prepared by low temperature microwave or thermal treatment , 2008 .

[52]  Suljo Linic,et al.  Water splitting on composite plasmonic-metal/semiconductor photoelectrodes: evidence for selective plasmon-induced formation of charge carriers near the semiconductor surface. , 2011, Journal of the American Chemical Society.

[53]  T. Tatsuma,et al.  UV‐Light‐Induced Swelling and Visible‐Light‐Induced Shrinking of a TiO2‐Containing Redox Gel , 2007 .

[54]  Prashant V Kamat,et al.  Photoinduced electron storage and surface plasmon modulation in Ag@TiO2 clusters. , 2004, Langmuir : the ACS journal of surfaces and colloids.