欢迎访问《电化学(中英文)》期刊官方网站,今天是
研究论文

氮掺杂TiO_2纳米线阵列优越的可见光光电性能(英文)

  • 吕小军 ,
  • 李悦明 ,
  • 张昊 ,
  • 陈达 ,
  • Jennifer Hensel ,
  • 张金中 ,
  • 李景虹
展开
  • 清华大学化学系;美国加利福尼亚大学Santa Cruz分校化学与生物化学系;

收稿日期: 2009-11-28

  修回日期: 2009-11-28

  网络出版日期: 2009-11-28

Enhanced Visible Light Photoelectrochemical Performances with Nitrogen Doped TiO_2 Nanowire Arrays

  • LV Xiao-jun ,
  • LI Yue-ming ,
  • ZHANG Hao ,
  • CHEN Da ,
  • Jennifer Hensel ,
  • Jin Z Zhang ,
  • LI Jing-hong
Expand
  • (1.Department ofChemistry,Tsinghua University,Beijing100084,China;2.Department ofChemistry and Biochemistry,University ofCalifornia,Santa Cruz,California95064,USA

Received date: 2009-11-28

  Revised date: 2009-11-28

  Online published: 2009-11-28

摘要

成功制备了氮掺杂锐钛矿TiO2纳米线,并研究了它的光电化学性质.结果表明,与商用P25 TiO2纳米粒子和未掺杂TiO2纳米线相比,氮掺杂TiO2纳米线作为光阳极明显地提高了光电转换效率(IPCE%),在可见光区有明显光吸收;在100 mW/cm2可见光光照下,氮掺杂TiO2纳米线具有最大的光电流密度和能量转换效率.例如,当电压为0.09 V(vs.Ag/AgC l)时最大能量转换效率为0.52%,均高于未掺杂TiO2纳米线和商用P25 TiO2纳米粒子的,充分表现出它优越的光响应和光电化学性能,在光电化学池、太阳能制氢等方面具有广泛的应用前景.

本文引用格式

吕小军 , 李悦明 , 张昊 , 陈达 , Jennifer Hensel , 张金中 , 李景虹 . 氮掺杂TiO_2纳米线阵列优越的可见光光电性能(英文)[J]. 电化学, 2009 , 15(4) : 432 -440 . DOI: 10.61558/2993-074X.2020

Abstract

Self-organized anodic anatase TiO2nanowire arrays doped with nitrogen have been successfully fabri-cated and their photoelectrochemical(PEC) properties have been characterized and found to be substantially im-proved compared to undoped nanowires or commercial P25 nanoparticles.Photocurrent measured with monochro-matic incident light showed that the incident photon-to-current efficiency(IPCE,%) values of nanowire arrayelectrodes with or without N-doping were obviously higher than that of commercial P25 nanoparticle electrodes,and nitrogen-doped TiO2nanowire arrays(NTNA) had noticeable absorption in the visible region.The NTNAelectrodes showed the highest photocurrent density and power conversion efficiency under 100 mW/cm2visiblelight illumination.A maximumolphotoconversion efficiency of 0.52% was achieved for the NTNA sample at anapplied potential of 0.09 V versus Ag/AgCl(saturated KCl) electrode under visible illumination,much higherthan that of the undoped nanowire and commercial P25 nanoparticle electrodes.These results demonstrate thatNTNA thin films are promising for enhancing the photoresponse and effectively improving PEC performances ofnanostructured TiO2in the visible region for different applications including solar hydrogen generation.

参考文献

[1]Fujishima A,Honda M.Electrochemical photolysis ofwater at a semiconductor electrode[J].Nature,1972,238:37. [2]Han W Q,Wu L J,Klie R F,et al.Enhanced opticalabsorption induced by dense nanocavities inside titaniananorods[J].Adv Mater,2007,19:2525. [3]Mor G K,Prakasamol HE,Varghese O K,et al.Ver-tically oriented Ti-Fe-O nanotube array films:toward auseful material architecture for solar spectrumolwaterphotoelectrolysis[J].Nano Lett,2007,7:2356. [4]Lu N,Quan X,Li J Y,et al.Facile method for fabri-cating boron-doped TiO2nanotube array with enhancedphotoelectrocatalytic properties[J].J Phys Chem C,2007,111:11836. [5]Zhou J,Ding Y,Deng S Z,et al.Three-dimensionaltungsten oxide nanowire networks[J].Adv Mater,2005,17:2107. [6]Kimol D,Ghicov A,Albu S P,et al.Bamboo-typeTiO2nanotubes:improved conversion efficiency in dye-Sensitized solar cells[J].J Am Chem Soc,2008,130:16454. [7]Boercker J E,Enache-Pommer E,Aydil E S.Growthmechanismolof titanium dioxide nanowires for dye-sensi-tized solar cells[J].Nanotechnology,2008,19:095604. [8]Lee J C,Sung Y M,KimolT G,et al.TiO2-CdSenanowire arrays showing visible-range light absorption[J].Appl Phys Lett,2007,91:113104. [9]Wang G,Wang Q,Lu W,et al.Photoelectrochemicalstudy on charge transfer properties of TiO2-B nanowireswith an application as humidity sensors[J].J PhysChem B,2006,110:22029. [10]Lim J H,Choi J.Titanium oxide nanowires originatingfrom anodically grown nanotubes[J].Small,2007,3:1504. [11]Wolcott A,Smith W A,Kuykendall TR,et al.Photo-electrochemical water splitting using dense and alignedTiO2nanorod arrays[J].Small,2009,5:104. [12]Yu A,Wu G J,Zhang F X,et al.Synthesis and char-acterization of N-doped TiO2nanowires with visiblelight response[J].Catal Lett,2009,129,507. [13]L幃pez-Luke T,Wolcott A,Xu L P,et al.Nitrogen-doped and CdSe quantum-dot-sensitized nanocrystallineTiO2films for solar energy conversion applications[J].J Phys Chem C,2008,112:1282. [14]Asahi R,Morikawa T,Ohwaki T,at al.Visible-lightphotocatalysis in nitrogen-doped titanium oxides[J].Science,2001,293:269. [15]Vitiello R P,Macak J M,Ghicov A,et al.N-dopingof anodic TiO2nanotubes using heat treatment in am-monia[J].Electrochem Commun,2006,8:544. [16]Chen X B,Lou Y,Samia A C S,et al.Formation ofoxynitride as the photocatalytic enhancing site n nitro-gen-doped titania nanocatalysts:comparison to a com-mercial nanopowder[J].Adv Funct Mater,2005,15:41. [17]Mart姫nez-Ferrero E,Sakatani Y,Boissi埁re C,et al.Nanostructured titanium oxynitride porous thin films asefficient visible-active photocatalysts[J].Adv FunctMater,2007,17:3348. [18]Moribe S,Ikoma T,Akiyama K,et al.Photoinducedexcited state proton rearrangement of 6-hydroxyquino-line along a hydrogen-bonded acetic acid wire[J].Chem Phys Lett,2007,436:373. [19]Navio J A,Cerrillos C C,Real C.Photo-inducedtransformation,upon UV Illumination in air,of hypo-nitrite species N2O22-preadsorbed on TiO2surface[J].Surf Interface Anal,1996,24:355. [20]Chen S Z,Zhang P Y,Zhang D M.Investigation ofnitrogen doped TiO2photocatalytic films prepared byreactive magnetron sputtering[J].Catal Commu,2004,11:677. [21]Wu P G,Ma C H,Shang J K.Effects of nitrogen do-ping on optical properties of TiO2thin films[J].ApplPhys A,2005,81:1411. [22]Song X,Gao L.Synthesis,characterization,and opti-cal properties of well-defined N-doped,hollow silica/titania hybrid microspheres[J].Langmuir,2007,23:11850. [23]Chen D,Gao Y F,Wang G,et al.Surface tailoringfor controlled photoelectrochemical properties:effect ofpatterned TiO2microarrays[J].J Phys Chem C,2007,111:13163. [24]Fabregat-Santiago F,Garcia-Belmonte G,Bisquert J,et al.Mott-Schottky analysis of nanoporous semicon-ductor electrodes in the dielectric state deposited onSnO2conducting substrates[J].J Electrochem Soc,2003,150:E293. [25]Wang G,Lu W,Li J H,et al.V-shaped tin oxidenanostructure featuring broad photocurrent spectra:aneffective visible-light driven photocatalyst[J].Small,2006,12:1436. [26]Hagfeldt A,Bjorksten U,Gratzel M.Photocapacitanceof nanocrystalline oxide semiconductor films:band-edge movement in mesoporous TiO2electrodes duringUV illumination[J].J Phys Chem,1996,100:8045. [27]BeranekR,Tsuchiya H,Sugishima T,etal.Enhancement and limits of the photoelectrochemical responsefrom anodic TiO2nanotubes[J].Appl Phys Lett,2005,87:243114. [28]Ong K G,Varghese O K,Mor G K,et al.Water-pho-tolysis properties of micron-length highly-ordered ti-tania nanotube-arrays[J].J Nanosci Nanotechnol,2005,5:1801. [29]Ohsaki Y,Masaki N,Kitamura T,et al.Dye-sensi-tized TiO2nanotube solar cells:fabrication and elec-tronic characterization[J].Phys Chem Chem Phys,2005,7:4157. [30]Lee J Y,Park J,Cho J H.Electronic properties of N-and C-doped TiO2[J].Appl Phys Lett,2005,87:011904. [31]Long M,Cai W,Wang Z,et al.Correlation of elec-tronic structures and crystal structures with photocata-lytic properties of undoped,N-doped and I-doped TiO2[J].Chem Phys Lett,2006,420:71. [32]Khan S U M,Al-Shahry M,Ingler W B Jr.Efficientphotochemical water splitting by a chemically modifiedn-TiO2[J].Science,2002,297:2243.
文章导航

/