Facile Electrospinning Synthesis of Carbonized Polyvinylpyrrolidone (PVP)/g-C3 N4 Hybrid Films for Photoelectrochemical Applications.

The film-forming ability and conductivity of graphitic carbon nitride (g-C3 N4 ) are still unsatisfying, despite much progress having been made in g-C3 N4 -related photocatalysts. New methods for synthesizing g-C3 N4 films coupled with excellent conductive materials are of significance. Herein, a facile method for synthesizing novel carbonized polyvinylpyrrolidone (PVP)/g-C3 N4 (CPVP /g-C3 N4 ) films have been developed through an electrospinning technique. Nanocarbons are generated by in situ carbonization of PVP in the films, which could enhance the photoelectrochemical (PEC) performance of the films due to its good conductivity. The coverage of the CPVP /g-C3 N4 film is good and the films exhibit excellent PEC performance. Furthermore, the thickness of the films can be adjusted by varying the electrospinning time and substantially controlling the PEC performance, of which the photocurrent densities under visible-light irradiation are 3.55, 4.92, and 6.64 μA cm-2 with spinning times of 40, 70, and 120 min, respectively. The photocurrent does not decrease until testing at 4000 s and the coverage is still good after the tests, which indicates the good stability of the films. The excellent PEC performance of the films and facile preparation method enables promising applications in energy and environmental remediation areas.

[1]  Tong Lin,et al.  High-performance supercapacitor electrode from cellulose-derived, inter-bonded carbon nanofibers , 2016 .

[2]  Yuanjian Zhang,et al.  Comparison Study of the Photoelectrochemical Activity of Carbon Nitride with Different Photoelectrode Configurations. , 2016, ACS applied materials & interfaces.

[3]  Ying Li,et al.  Crystallinity Modulation of Layered Carbon Nitride for Enhanced Photocatalytic Activities , 2016, Chemistry.

[4]  M. Antonietti,et al.  Graphitic carbon nitride "reloaded": emerging applications beyond (photo)catalysis. , 2016, Chemical Society reviews.

[5]  Shaopei Jia,et al.  Temperature tuned carbon morphologies derived from flexible graphite sheets in KNO3 molten salt , 2016 .

[6]  D. Kim,et al.  Electrochemical sensing performance of nanodiamond-derived carbon nano-onions: Comparison with multiwalled carbon nanotubes, graphite nanoflakes, and glassy carbon , 2016 .

[7]  Xinchen Wang,et al.  Overall water splitting by Pt/g-C3N4 photocatalysts without using sacrificial agents† †Electronic supplementary information (ESI) available: Characterization and experimental detail. See DOI: 10.1039/c5sc04572j , 2016, Chemical science.

[8]  Xinchen Wang,et al.  Two-dimensional covalent carbon nitride nanosheets: synthesis, functionalization, and applications , 2015 .

[9]  Xinchen Wang,et al.  Graphitic Carbon Nitride Polymers toward Sustainable Photoredox Catalysis. , 2015, Angewandte Chemie.

[10]  Bo Wang,et al.  Polymeres graphitisches Kohlenstoffnitrid für die nachhaltige Photoredoxkatalyse , 2015 .

[11]  T. Peng,et al.  Enhanced photocatalytic activity of g-C3N4 for selective CO2 reduction to CH3OH via facile coupling of ZnO: a direct Z-scheme mechanism , 2015 .

[12]  Yihe Zhang,et al.  In situ co-pyrolysis fabrication of CeO2/g-C3N4 n–n type heterojunction for synchronously promoting photo-induced oxidation and reduction properties , 2015 .

[13]  Q. Jiang,et al.  Ag2O modified g-C3N4 for highly efficient photocatalytic hydrogen generation under visible light irradiation , 2015 .

[14]  Yan Zhang,et al.  Seed-induced growing various TiO₂ nanostructures on g-C₃N₄ nanosheets with much enhanced photocatalytic activity under visible light. , 2015, Journal of hazardous materials.

[15]  Jinshui Zhang,et al.  Sol processing of conjugated carbon nitride powders for thin-film fabrication. , 2015, Angewandte Chemie.

[16]  Gang Chen,et al.  The synthesis of condensed C-PDA-g-C3N4 composites with superior photocatalytic performance. , 2015, Chemical communications.

[17]  M. Jaroniec,et al.  Polymeric Photocatalysts Based on Graphitic Carbon Nitride , 2015, Advanced materials.

[18]  Sam S. Yoon,et al.  Nanotextured pillars of electrosprayed bismuth vanadate for efficient photoelectrochemical water splitting. , 2015, Langmuir : the ACS journal of surfaces and colloids.

[19]  M. Antonietti,et al.  Hybrid C3N4/Fluorine‐Doped Tin Oxide Electrode Transfers Hydride for 1,4‐NADH Cofactor Regeneration , 2015 .

[20]  Xing Zhang,et al.  Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway , 2015, Science.

[21]  M. Antonietti,et al.  Liquid-based growth of polymeric carbon nitride layers and their use in a mesostructured polymer solar cell with V(oc) exceeding 1 V. , 2014, Journal of the American Chemical Society.

[22]  X. Jiao,et al.  Electrospun flexible self-standing γ-alumina fibrous membranes and their potential as high-efficiency fine particulate filtration media , 2014 .

[23]  Hui-Ming Cheng,et al.  Switching the selectivity of the photoreduction reaction of carbon dioxide by controlling the band structure of a g-C3N4 photocatalyst. , 2014, Chemical communications.

[24]  Yajun Wang,et al.  Enhanced oxidation ability of g-C3N4 photocatalyst via C60 modification , 2014 .

[25]  Shu-Hong Yu,et al.  Nanoparticles meet electrospinning: recent advances and future prospects. , 2014, Chemical Society reviews.

[26]  J. Leckie,et al.  Highly efficient and flexible electrospun carbon-silica nanofibrous membrane for ultrafast gravity-driven oil-water separation. , 2014, ACS applied materials & interfaces.

[27]  P. Ajayan,et al.  Exfoliated Graphitic Carbon Nitride Nanosheets as Efficient Catalysts for Hydrogen Evolution Under Visible Light , 2013, Advanced materials.

[28]  Yao Zheng,et al.  Nanostructured metal-free electrochemical catalysts for highly efficient oxygen reduction. , 2012, Small.

[29]  M. Antonietti,et al.  Co-monomer control of carbon nitride semiconductors to optimize hydrogen evolution with visible light. , 2012, Angewandte Chemie.

[30]  Sean C. Smith,et al.  Nanoporous graphitic-C3N4@carbon metal-free electrocatalysts for highly efficient oxygen reduction. , 2011, Journal of the American Chemical Society.

[31]  L. Niu,et al.  Non-covalent doping of graphitic carbon nitride polymer with graphene: controlled electronic structure and enhanced optoelectronic conversion , 2011 .

[32]  J. Cauich‐Rodríguez,et al.  A TG/FTIR study on the thermal degradation of poly(vinyl pyrrolidone) , 2011 .

[33]  Hui-Ming Cheng,et al.  Unique electronic structure induced high photoreactivity of sulfur-doped graphitic C3N4. , 2010, Journal of the American Chemical Society.

[34]  M. Antonietti,et al.  Photocurrent generation by polymeric carbon nitride solids: an initial step towards a novel photovoltaic system. , 2010, Chemistry, an Asian journal.

[35]  M. Antonietti,et al.  Activation of carbon nitride solids by protonation: morphology changes, enhanced ionic conductivity, and photoconduction experiments. , 2009, Journal of the American Chemical Society.

[36]  Reza Sarvari,et al.  Ethanol sensing properties of PVP electrospun membranes studied by quartz crystal microbalance , 2016 .

[37]  Fenfen Liang,et al.  Enhancement of mineralization ability for phenol via synergetic effect of photoelectrocatalysis of g-C3N4 film , 2016 .

[38]  Lei Jiang,et al.  Microcontact‐Printing‐Assisted Access of Graphitic Carbon Nitride Films with Favorable Textures toward Photoelectrochemical Application , 2015, Advanced materials.

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