W掺杂和电化学表面处理制备高光电化学性能的BiVO_4光阳极（英文）
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摘要
通过滴涂的方法合成了W掺杂BiVO4光阳极.通过XRD、紫外—可见吸收光谱、扫描电镜(SEM)对BiVO4光阳极进行表征,并对BiVO4光阳极进行了光电化学表征.为了提高W掺杂BiVO4光阳极的光电性能,对W掺杂BiVO4光阳极的制备条件进行了优化.光电化学测试结果表明电化学表面处理能够提高W掺杂BiVO4光阳极的光电化学性能.说明W掺杂和电化学表面处理可以增加BiVO4光阳极光电流.并进行了BiVO4光阳极光电流增加的机理分析.
W-doped BiVO4 photoanode was obtained through drop-casting method.The physical and photophysical properties of the BiVO4 photoanode were investigated by X-ray diffraction(XRD),UV-vis absorption spectroscopy and scanning electron microscopy(SEM).Photo-electrochemical performance was evaluated for the W-doped BiVO4 photoanode.In terms of maximizing the photoelectrochemical performances of the W-doped BiVO4 photoanodes,the synthesis conditions were optimized.The W-doped BiVO4 photoanode exhibits improved photoelectrochemical performance after the electrochemical surface pretreatment.The photoelctrochemical response of BiVO4 photoanode can be improved by both tungsten doping and the electrochemical surface pretreatment.A possible mechanism was also proposed to explain the reason for the photocurrent enhancement.
W-doped BiVO4 photoanode was obtained through drop-casting method.The physical and photophysical properties of the BiVO4 photoanode were investigated by X-ray diffraction(XRD),UV-vis absorption spectroscopy and scanning electron microscopy(SEM).Photo-electrochemical performance was evaluated for the W-doped BiVO4 photoanode.In terms of maximizing the photoelectrochemical performances of the W-doped BiVO4 photoanodes,the synthesis conditions were optimized.The W-doped BiVO4 photoanode exhibits improved photoelectrochemical performance after the electrochemical surface pretreatment.The photoelctrochemical response of BiVO4 photoanode can be improved by both tungsten doping and the electrochemical surface pretreatment.A possible mechanism was also proposed to explain the reason for the photocurrent enhancement.
引文
[1]Zhou L L.Synthesis of BiOBr/I nanocomposites and photocatalytic activities to organic compounds[J].J Sichuan Univ:Nat Sci Ed,2015,52:370(in Chinese).
[2]Cesar I,Kay A,Gonzalez Martinez J A,et al.Translucent thin film Fe2O3 photoanodes for efficient water splitting by sunlight:Nanostructure-directing effect of Si-doping[J].J Am Chem Soc,2006,128:4582.
[3]Santato C,Odziemkowski M,Ulmann M,et al.Crystallographically oriented mesoporous WO3films:synthesis,characterization,and applications[J].J Am Chem Soc,2001,123:10639.
[4]Luo W J,Yang Z S,Li Z S,et al.Solar hydrogen generation from seawater with a modified BiVO4photoanode[J].Energy Environ Sci,2011,4:4046.
[5]Long M C,Cai W M,Kisch H.Visible light induced photoelectrochemical properties of n-BiVO4and n-BiVO4/p-Co3O4[J].J Phys Chem C,2008,112:548.
[6]Hong S J,Lee S,Jang J S,et al.Heterojunction BiVO4/WO3electrodes for enhanced photoactivity of water oxidation[J].Energy Environ Sci,2011,4:1781.
[7]Kudo A,Ueda K,Kato H,et al.Photocatalytic O2evolution under visible light irradiation on BiVO4in aqueous AgNO3solution[J].Catal Lett,1998,53:229.
[8]Kudo A,Omori K,Kato H.A novel aqueous process for preparation of crystal form-controlled and highly crystalline BiVO4 powder from layered vanadates at room temperature and its photocatalytic and photophysical properties[J].J Am Chem Soc,1999,121:11459.
[9]Luo H M,Mueller A H,McCleskey T M,et al.Structural and photoelectrochemical properties of BiVO4thin films[J].J Phys Chem C,2008,112:6099.
[10]Park H S,Kweon K E,Ye H,et al.Factors in the metal doping of BiVO4 for improved photoelectrocatalytic activity as studied by scanning electrochemical microscopy and first-principles density-functional calculation[J].J Phys Chem C,2011,115:17870.
[11]Rao P M,Cai L L,Liu C,et al.Simultaneously efficient light absorption and charge separation in WO3/BiVO4core/shell nanowire photoanode for photoelectrochemical water oxidation[J].Nano Lett,2014,14:1099.
[12]Li Z S,Luo W J,Zhang M L,et al.Photoelectrochemical cells for solar hydrogen production:current state of promising photoelectrodes,methods to improve their properties,and outlook[J].Energy Environ Sci,2013,6:347.
[13]Li M T,Zhao L,Guo L J.Preparation and photoelectrochemical study of BiVO4thin films deposited by ultrasonic spray pyrolysis[J].Int J Hydrogem Energ,2010,35:7127.
[14]Sayama K,Nomura A,Arai T,et al.Photoelectrochemical decomposition of water into H2and O2 on porous BiVO4thin-film electrodes under visible light and significant effect of Ag ion treatment[J].J Phys Chem B,2006,110:11352.
[15]Su J,Guo L,Yoriya S,et al.Aqueous growth of pyramidal-shaped BiVO4nanowire arrays and structural characterization:application to photoelectrochemical water splitting[J].Cryst Growth Des,2010,10:856.
[16]Ng Y H,Iwase A,Kudo A,et al.Reducing graphene oxide on a visible-light BiVO4 photocatalyst for an enhanced photoelectrochemical water splitting[J].J Phys Chem Lett,2010,1:2607.
[17]Seabold J A,Choi K S.Efficient and stable photooxidation of water by a bismuth vanadate photoanode coupled with an iron oxyhydroxide oxygen evolution catalyst[J].J Am Chem Soc,2012,134:2186.
[18]Berglund S P,Flaherty D W,Hahn N T,et al.Photoelectrochemical oxidation of water using nanostructured BiVO4films[J].J Phys Chem C,2011,115:3794.
[19]Park H S,Kweon K E,Ye H,et al.Factors in the metal doping of BiVO4 for improved photoelectrocatalytic activity as studied by scanning electrochemical microscopy and first-principles density-functional calculation[J].J Phys Chem C,2011,115:17870.
[20]Ye H,Park H S,Bard A J.Screening of electrocatalysts for photoelectrochemical water oxidation on W-doped BiVO4photocatalysts by scanning electrochemical microscopy[J].J Phys Chem C,2011,115:12464.
[21]Zhong D K,Choi S,Gamelin D R.Near-complete suppression of surface pecombination in solar photoelectrolysis by“Co-Pi”catalyst-modified W:BiVO4[J].J Am Chem Soc,2011,133:18370.
[22]Luo W J,Li Z S,Yu T,et al.Effects of surface electrochemical pretreatment on the photoelectrochemical performance of Mo-doped BiVO4[J].J Phys Chem C,2012,116:5076.
[23]Pattengale B,Ludwig J,Huang J.Atomic insight into the W-doping effect on carrier dynamics and photoelectrochemical properties of BiVO4 photoanodes[J].J Phys Chem C,2016,120:1421.
[24]Corbel G,Laligant Y,Goutenoire F,et al.Effects of partial substitution of Mo6+by Cr6+and W6+on the crystal structure of the fast oxide-ion conductor structural effects of W6+[J].Chem Mater,2005,17:4678.
[25]Karakitsou K E,Verykios X E.Effects of altervalent cation,doping of TiO2on its performance as a photocatalyst for water cleavage[J].J Phys Chem,1993,97:1184.
[2]Cesar I,Kay A,Gonzalez Martinez J A,et al.Translucent thin film Fe2O3 photoanodes for efficient water splitting by sunlight:Nanostructure-directing effect of Si-doping[J].J Am Chem Soc,2006,128:4582.
[3]Santato C,Odziemkowski M,Ulmann M,et al.Crystallographically oriented mesoporous WO3films:synthesis,characterization,and applications[J].J Am Chem Soc,2001,123:10639.
[4]Luo W J,Yang Z S,Li Z S,et al.Solar hydrogen generation from seawater with a modified BiVO4photoanode[J].Energy Environ Sci,2011,4:4046.
[5]Long M C,Cai W M,Kisch H.Visible light induced photoelectrochemical properties of n-BiVO4and n-BiVO4/p-Co3O4[J].J Phys Chem C,2008,112:548.
[6]Hong S J,Lee S,Jang J S,et al.Heterojunction BiVO4/WO3electrodes for enhanced photoactivity of water oxidation[J].Energy Environ Sci,2011,4:1781.
[7]Kudo A,Ueda K,Kato H,et al.Photocatalytic O2evolution under visible light irradiation on BiVO4in aqueous AgNO3solution[J].Catal Lett,1998,53:229.
[8]Kudo A,Omori K,Kato H.A novel aqueous process for preparation of crystal form-controlled and highly crystalline BiVO4 powder from layered vanadates at room temperature and its photocatalytic and photophysical properties[J].J Am Chem Soc,1999,121:11459.
[9]Luo H M,Mueller A H,McCleskey T M,et al.Structural and photoelectrochemical properties of BiVO4thin films[J].J Phys Chem C,2008,112:6099.
[10]Park H S,Kweon K E,Ye H,et al.Factors in the metal doping of BiVO4 for improved photoelectrocatalytic activity as studied by scanning electrochemical microscopy and first-principles density-functional calculation[J].J Phys Chem C,2011,115:17870.
[11]Rao P M,Cai L L,Liu C,et al.Simultaneously efficient light absorption and charge separation in WO3/BiVO4core/shell nanowire photoanode for photoelectrochemical water oxidation[J].Nano Lett,2014,14:1099.
[12]Li Z S,Luo W J,Zhang M L,et al.Photoelectrochemical cells for solar hydrogen production:current state of promising photoelectrodes,methods to improve their properties,and outlook[J].Energy Environ Sci,2013,6:347.
[13]Li M T,Zhao L,Guo L J.Preparation and photoelectrochemical study of BiVO4thin films deposited by ultrasonic spray pyrolysis[J].Int J Hydrogem Energ,2010,35:7127.
[14]Sayama K,Nomura A,Arai T,et al.Photoelectrochemical decomposition of water into H2and O2 on porous BiVO4thin-film electrodes under visible light and significant effect of Ag ion treatment[J].J Phys Chem B,2006,110:11352.
[15]Su J,Guo L,Yoriya S,et al.Aqueous growth of pyramidal-shaped BiVO4nanowire arrays and structural characterization:application to photoelectrochemical water splitting[J].Cryst Growth Des,2010,10:856.
[16]Ng Y H,Iwase A,Kudo A,et al.Reducing graphene oxide on a visible-light BiVO4 photocatalyst for an enhanced photoelectrochemical water splitting[J].J Phys Chem Lett,2010,1:2607.
[17]Seabold J A,Choi K S.Efficient and stable photooxidation of water by a bismuth vanadate photoanode coupled with an iron oxyhydroxide oxygen evolution catalyst[J].J Am Chem Soc,2012,134:2186.
[18]Berglund S P,Flaherty D W,Hahn N T,et al.Photoelectrochemical oxidation of water using nanostructured BiVO4films[J].J Phys Chem C,2011,115:3794.
[19]Park H S,Kweon K E,Ye H,et al.Factors in the metal doping of BiVO4 for improved photoelectrocatalytic activity as studied by scanning electrochemical microscopy and first-principles density-functional calculation[J].J Phys Chem C,2011,115:17870.
[20]Ye H,Park H S,Bard A J.Screening of electrocatalysts for photoelectrochemical water oxidation on W-doped BiVO4photocatalysts by scanning electrochemical microscopy[J].J Phys Chem C,2011,115:12464.
[21]Zhong D K,Choi S,Gamelin D R.Near-complete suppression of surface pecombination in solar photoelectrolysis by“Co-Pi”catalyst-modified W:BiVO4[J].J Am Chem Soc,2011,133:18370.
[22]Luo W J,Li Z S,Yu T,et al.Effects of surface electrochemical pretreatment on the photoelectrochemical performance of Mo-doped BiVO4[J].J Phys Chem C,2012,116:5076.
[23]Pattengale B,Ludwig J,Huang J.Atomic insight into the W-doping effect on carrier dynamics and photoelectrochemical properties of BiVO4 photoanodes[J].J Phys Chem C,2016,120:1421.
[24]Corbel G,Laligant Y,Goutenoire F,et al.Effects of partial substitution of Mo6+by Cr6+and W6+on the crystal structure of the fast oxide-ion conductor structural effects of W6+[J].Chem Mater,2005,17:4678.
[25]Karakitsou K E,Verykios X E.Effects of altervalent cation,doping of TiO2on its performance as a photocatalyst for water cleavage[J].J Phys Chem,1993,97:1184.