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Title: Enhanced photocatalytic activity induced by sp3 to sp2 transition of carbon dopants in BiOCl crystals

Journal Article · · Applied Catalysis. B, Environmental
 [1];  [2];  [3];  [1];  [1];  [4];  [4];  [5];  [1]
  1. Chongqing University (China)
  2. Chongqing University (China); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  3. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
  4. Chinese Academy of Sciences (CAS), Beijing (China)
  5. King Abdullah University of Science and Technology (KAUST), Thuwal (Saudi Arabia)
+ Show Author Affiliations

The insufficient light absorption and low quantum efficiency limit the photocatalytic performance of wide bandgap semiconductors. Here, in this study, we report a facile strategy to engineer the surface disordered defects of BiOCl nanosheets via carbon doping. The surface defects boost the light absorption and also the quantum yields, as the doped carbon atoms exhibit a transition from sp3 to sp2 hybridization at elevated temperature, corresponding toa change of assembly state from 3D cluster to 2D graphite-like structure. This transition results in an effective charge separation and thus one order of enhancement in photocatalytic activity toward phenol degradation under visible light. The current study opens an avenue to introduce sp3 to sp2 transition of carbon dopants for simultaneous increment of light absorption and quantum efficiency for application in photocatalysis and energy conversion.

Research Organization:
Lawrence Berkeley National Laboratory, Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF); National Natural Science Foundation of China (NSFC); Fundamental Research Funds for the Central Universities; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231; ACI-1053575; DMR160118; 51302329; 51501024; 106112015CDJXY130010; 106112016CDJZR135506
OSTI ID:
1495831
Alternate ID(s):
OSTI ID: 1462040
Journal Information:
Applied Catalysis. B, Environmental, Vol. 221, Issue C; ISSN 0926-3373
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (35)

Improved visible light photocatalytic properties of Fe/BiOCl microspheres synthesized via self-doped reactable ionic liquids journal January 2013
Generalized Gradient Approximation Made Simple journal October 1996
Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals journal January 2011
Interfacial Stress Transfer in a Graphene Monolayer Nanocomposite journal May 2010
Mono- and few-layer nanocrystalline graphene grown on Al2O3(0 0 0 1) by molecular beam epitaxy journal May 2013
Projector augmented-wave method journal December 1994
Quantifying Defects in Graphene via Raman Spectroscopy at Different Excitation Energies journal July 2011
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Raman spectroscopy of graphene and carbon nanotubes journal June 2011
First- and second-order Raman scattering from finite-size crystals of graphite journal July 1979
Solid state vibrational spectroscopy—III[1] The infrared and raman spectra of the bismuth(III) oxide halides journal May 1973
Graphene−Metal Particle Nanocomposites journal November 2008
The use of a glucose-reduced graphene oxide suspension for photothermal cancer therapy journal January 2012
Synthesis and Facet-Dependent Photoreactivity of BiOCl Single-Crystalline Nanosheets journal March 2012
One-pot solvothermal synthesis of S doped BiOCl for solar water oxidation journal January 2015
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
First-principles investigations of transition-metal doped bilayer WS2 journal January 2016
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
A Bi/BiOCl heterojunction photocatalyst with enhanced electron–hole separation and excellent visible light photodegrading activity journal January 2014
The Electronic Origin of the Visible-Light Absorption Properties of C-, N- and S-Doped TiO 2 Nanomaterials journal April 2008
Increasing visible-light absorption for photocatalysis with black BiOCl journal January 2012
Two-Step Boron and Nitrogen Doping in Graphene for Enhanced Synergistic Catalysis journal January 2013
Properties of Disorder-Engineered Black Titanium Dioxide Nanoparticles through Hydrogenation journal March 2013
Probing Strain-Induced Electronic Structure Change in Graphene by Raman Spectroscopy journal October 2010
High-temperature formation of concentric fullerene-like structures within foam-like carbon: Experiment and molecular dynamics simulation journal June 2007
High pressure transformation of single-crystal graphite to form molecular carbon–onions journal July 2007
Raman Spectrum of Graphene and Graphene Layers journal October 2006
Temperature Dependence of “Elementary Processes” in Doping Semiconductor Nanocrystals journal July 2009
Study of the electronic structure and photocatalytic activity of the BiOCl photocatalyst journal November 2006
Facet-Level Mechanistic Insights into General Homogeneous Carbon Doping for Enhanced Solar-to-Hydrogen Conversion journal February 2015
Flowerlike C-doped BiOCl nanostructures: Facile wet chemical fabrication and enhanced UV photocatalytic properties journal November 2013
Engineering BiOX (X = Cl, Br, I) nanostructures for highly efficient photocatalytic applications journal January 2014
Effective increasing of optical absorption and energy conversion efficiency of anatase TiO2 nanocrystals by hydrogenation journal January 2011
Carbon Quantum Dots Modified BiOCl Ultrathin Nanosheets with Enhanced Molecular Oxygen Activation Ability for Broad Spectrum Photocatalytic Properties and Mechanism Insight journal August 2015
Highly Enhanced Photoactivity of Anatase TiO 2 Nanocrystals by Controlled Hydrogenation-Induced Surface Defects journal October 2013

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36 MATERIALS SCIENCE
Photocatalysis
BiOCl
Carbon doping
Surface defects engineering
2D materials