Highly Durable N-Doped Graphene/CdS Nanocomposites with Enhanced Photocatalytic Hydrogen Evolution from Water under Visible Light Irradiation

A series of N-doped graphene (N-graphene)/CdS nanocomposites were synthesized by calcination and characterized by X-ray diffraction, transmission electron microscopy, high-resolution transmission electron microscopy, Raman spectroscopy, N2 adsorption analysis, ultraviolet–visible diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy. The photocatalytic activity of as-prepared N-graphene/CdS for hydrogen production from water under visible light irradiation at λ ≥ 420 nm was investigated. The results show that N-graphene/CdS nanocomposites have a higher photocatalytic activity than pure CdS. Transient photocurrents measured with a photoelectrochemical test device show that the photocurrent of the N-graphene/CdS sample is much increased as compared to the sole CdS. This enhanced photoresponse indicates that the photoinduced electrons in the CdS prefer separately transferring to the N-doped graphene. As a consequence, the radiative recombination of the electron–hole pairs is hampered and the...

[1]  A. Mills,et al.  Photosensitised dissociation of water using dispersed suspensions of n-type semiconductors , 1982 .

[2]  A. Xu,et al.  The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO2 nanoparticles , 2002 .

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

[4]  K. Domen,et al.  Photocatalyst releasing hydrogen from water , 2006, Nature.

[5]  A. Kashuba.  Conductivity of defectless graphene , 2008, 0802.2216.

[6]  H. Dai,et al.  Highly conducting graphene sheets and Langmuir-Blodgett films. , 2008, Nature nanotechnology.

[7]  O. Eriksson,et al.  Defect-controlled electronic transport in single, bilayer, and N-doped graphene : Theory , 2010 .

[8]  Chang Ming Li,et al.  Layered graphene/quantum dots for photovoltaic devices. , 2010, Angewandte Chemie.

[9]  Quan-hong Yang,et al.  Dual Raman features of double coaxial carbon nanotubes with N-doped and B-doped multiwalls. , 2005, Nano letters.

[10]  G. Wallace,et al.  Processable aqueous dispersions of graphene nanosheets. , 2008, Nature nanotechnology.

[11]  I. Willner,et al.  Efficient generation of photocurrents by using CdS/carbon nanotube assemblies on electrodes. , 2004, Angewandte Chemie.

[12]  H. Gerischer,et al.  Zum Mechanismus der Elektronenübertragung und der Korrosion an einer Cadmiumsulfid-Elektrode im Redoxsystem J3−/J− , 1971 .

[13]  M. Prato,et al.  CNT-CdTe versatile donor-acceptor nanohybrids. , 2006, Journal of the American Chemical Society.

[14]  H. Estrade-szwarckopf.  XPS photoemission in carbonaceous materials: A “defect” peak beside the graphitic asymmetric peak , 2004 .

[15]  Growth, nitrogen doping and characterization of isolated single-wall carbon nanotubes using liquid precursors , 2005 .

[16]  Zhanping Li,et al.  A strategy for producing pure single-layer graphene sheets based on a confined self-assembly approach. , 2009, Angewandte Chemie.

[17]  Andre K. Geim,et al.  Electric Field Effect in Atomically Thin Carbon Films , 2004, Science.

[18]  F. Illas,et al.  Origin of the Large N 1s Binding Energy in X-ray Photoelectron Spectra of Calcined Carbonaceous Materials , 1996 .

[19]  Jennifer K. Hensel,et al.  Synergistic effect of CdSe quantum dot sensitization and nitrogen doping of TiO(2) nanostructures for photoelectrochemical solar hydrogen generation. , 2010, Nano letters.

[20]  Andre K. Geim,et al.  The rise of graphene. , 2007, Nature materials.

[21]  K. Loh,et al.  One-pot synthesis of fluorescent carbon nanoribbons, nanoparticles, and graphene by the exfoliation of graphite in ionic liquids. , 2009, ACS nano.

[22]  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.

[23]  Lei Fu,et al.  A new method to synthesize complicated multi-branched carbon nanotubes with controlled architecture and composition. , 2006, Nano letters.

[24]  Qian Liu,et al.  Organic Photovoltaic Devices Based on a Novel Acceptor Material: Graphene , 2008 .

[25]  T. Mallouk,et al.  Direct deposition of trivalent rhodium hydroxide nanoparticles onto a semiconducting layered calcium niobate for photocatalytic hydrogen evolution. , 2008, Nano letters.

[26]  M. Matsumura,et al.  Photocatalytic hydrogen production from solutions of sulfite using platinized cadmium sulfide powder , 1983 .

[27]  H. Dai,et al.  Solvothermal reduction of chemically exfoliated graphene sheets. , 2009, Journal of the American Chemical Society.

[28]  J. Hou,et al.  Dramatically enhanced photoresponse of reduced graphene oxide with linker-free anchored CdSe nanoparticles. , 2010, ACS nano.

[29]  Anusorn Kongkanand,et al.  Single wall carbon nanotube scaffolds for photoelectrochemical solar cells. Capture and transport of photogenerated electrons. , 2007, Nano letters.

[30]  Yanli Chang,et al.  A Facile One‐step Method to Produce Graphene–CdS Quantum Dot Nanocomposites as Promising Optoelectronic Materials , 2010, Advanced materials.

[31]  P. J. Ollivier,et al.  Layer-by-Layer Assembly of Ultrathin Composite Films from Micron-Sized Graphite Oxide Sheets and Polycations , 1999 .

[32]  Dimitrios Gournis,et al.  Graphite Oxide: Chemical Reduction to Graphite and Surface Modification with Primary Aliphatic Amines and Amino Acids , 2003 .

[33]  R. Asahi,et al.  Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides , 2001, Science.

[34]  M. Graetzel,et al.  Artificial photosynthesis: water cleavage into hydrogen and oxygen by visible light , 1981 .

[35]  W. Ingler,et al.  Efficient Photochemical Water Splitting by a Chemically Modified n-TiO2 , 2002, Science.

[36]  M. Matsumura,et al.  Cadmium sulfide photocatalyzed hydrogen production from aqueous solutions of sulfite: effect of crystal structure and preparation method of the catalyst , 1985 .

[37]  K. Domen,et al.  Modification of oxysulfides with two nanoparticulate cocatalysts to achieve enhanced hydrogen production from water with visible light. , 2010, Chemical communications.

[38]  Yuehe Lin,et al.  Graphene/TiO2 nanocomposites: synthesis, characterization and application in hydrogen evolution from water photocatalytic splitting , 2010 .

[39]  Michael Grätzel,et al.  Photochemical cleavage of water by photocatalysis , 1981, Nature.

[40]  K. Müllen,et al.  Transparent, conductive graphene electrodes for dye-sensitized solar cells. , 2008, Nano letters.

[41]  Hongjian Yan,et al.  Visible-light-driven hydrogen production with extremely high quantum efficiency on Pt-PdS/CdS photocatalyst , 2009 .

[42]  Y. Liu,et al.  Nitrogen-doped graphene as efficient metal-free electrocatalyst for oxygen reduction in fuel cells. , 2010, ACS nano.

[43]  Muthupandian Ashokkumar,et al.  An overview on semiconductor particulate systems for photoproduction of hydrogen , 1998 .

[44]  Young Hee Lee,et al.  DENSITY FUNCTIONAL THEORY STUDY OF GRAPHITE OXIDE FOR DIFFERENT OXIDATION LEVELS , 2009 .

[45]  S. Upadhyay,et al.  Active Cadmium Sulfide Photocatalysts for Hydrogen Production from Water , 1998 .

[46]  R. Czerw,et al.  Substrate-interface interactions between carbon nanotubes and the supporting substrate , 2002 .

[47]  Cohen,et al.  Defects, quasibound states, and quantum conductance in metallic carbon nanotubes , 2000, Physical review letters.

[48]  Yong Wang,et al.  Nitrogen-doped graphene and its electrochemical applications , 2010 .

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

[50]  D. S. Misra,et al.  Enhanced and stable field emission from in situ nitrogen-doped few-layered graphene nanoflakes , 2011 .

[51]  R. Czerw,et al.  N-doping and coalescence of carbon nanotubes: synthesis and electronic properties , 2002 .

[52]  G. Porter,et al.  Photochemical hydrogen production using cadmium sulphide suspensions in aerated water , 1981 .

[53]  M. Antonietti,et al.  A metal-free polymeric photocatalyst for hydrogen production from water under visible light. , 2009, Nature materials.

[54]  N. Dimitrijević,et al.  Colloidal semiconductors as photocatalysts for solar energy conversion , 1990 .

[55]  P. Kamat,et al.  CdSe quantum dot sensitized solar cells. Shuttling electrons through stacked carbon nanocups. , 2009, Journal of the American Chemical Society.

[56]  J. R. Darwent.  H2 production photosensitized by aqueous semiconductor dispersions , 1981 .

[57]  D. Meissner,et al.  Fundamental problems of water splitting at cadmium sulfide , 1986 .

[58]  R. Banerjee,et al.  Effect of the size-induced structural transformation on the band gap in CdS nanoparticles , 2000 .

[59]  L. Gao,et al.  Synthesis and characterization of CdS/multiwalled carbon nanotube heterojunctions , 2004 .

[60]  Simultaneous nitrogen doping and reduction of graphene oxide. , 2009, Journal of the American Chemical Society.

[61]  T. Hirotsu,et al.  Nanoporous composite of carbon nanosheets and functional titania nanoparticles formed by reassembling of exfoliated graphite oxides with colloidal titania , 2009 .

[62]  Yuhan Sun,et al.  One‐Step Solvothermal Synthesis of a Carbon@TiO2 Dyade Structure Effectively Promoting Visible‐Light Photocatalysis , 2010, Advanced materials.

[63]  Hao Zhang,et al.  Significant Visible Photoactivity and Antiphotocorrosion Performance of CdS Photocatalysts after Monolayer Polyaniline Hybridization , 2010 .

[64]  P. Kamat,et al.  Single‐Walled Carbon Nanotube–CdS Nanocomposites as Light‐Harvesting Assemblies: Photoinduced Charge‐Transfer Interactions , 2005 .

[65]  Xinyong Li,et al.  A structured macroporous silicon/graphene heterojunction for efficient photoconversion. , 2010, Angewandte Chemie.

[66]  T. Mallouk,et al.  Niobium Oxide Nanoscrolls as Building Blocks for Dye-Sensitized Hydrogen Production from Water under Visible Light Irradiation , 2008 .

[67]  M. Grätzel,et al.  Interfacial electron transfer in colloidal metal and semiconductor dispersions and photodecomposition of water , 1986 .

[68]  Jean François Dr. Reber,et al.  Photochemical hydrogen production with platinized suspensions of cadmium sulfide and cadmium zinc sulfide modified by silver sulfide , 1986 .

[69]  Han-Qing Yu,et al.  Graphene oxide nanoribbons greatly enhance extracellular electron transfer in bio-electrochemical systems. , 2011, Chemical communications.

[70]  K. Domen,et al.  Effect of post-calcination on photocatalytic activity of (Ga1−xZnx)(N1−xOx) solid solution for overall water splitting under visible light , 2008 .

[71]  Gui Yu,et al.  Synthesis of N-doped graphene by chemical vapor deposition and its electrical properties. , 2009, Nano letters.

[72]  Liejin Guo,et al.  A novel method for the preparation of a highly stable and active CdS photocatalyst with a special surface nanostructure. , 2006, The journal of physical chemistry. B.

[73]  Hironori Arakawa,et al.  Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst , 2001, Nature.

[74]  Jeunghee Park,et al.  Growth of Vertically Aligned Nitrogen-Doped Carbon Nanotubes: Control of the Nitrogen Content over the Temperature Range 900−1100 °C , 2003 .

[75]  Itamar Willner,et al.  Electrochemical Assembly of a CdS Semiconductor Nanoparticle Monolayer on Surfaces: Structural Properties and Photoelectrochemical Applications , 2004 .