BiVO_4/MOF复合材料的合成及其光催化性能
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摘要
通过简单溶剂热法制备了一种新型复合光催化剂BiVO_4/M IL-53(Fe);运用XRD、SEM/EDS、FT-IR、N_2吸附-脱附和UV-vis DRS等手段对其进行表征,并对其光催化降解RhB活性进行了研究,提出了相应的光催化降解RhB的可能机理。结果表明,相较于单一BiVO_4材料,复合催化剂的比表面积增大,且其光催化效率相较于纯BiVO_4和MIL-53(Fe)也有了较大的提高;其中,BF-2复合材料的光催化活性最高,分别约为纯MIL-53 (Fe)和BiVO_4的5. 2倍和8. 1倍。同时,BiVO_4/MIL-53(Fe)复合光催化剂经过四次循环实验后,仍能保持较稳定的光催化活性和结构。
A new composite photocatalyst, viz., BiVO_4/MIL-53( Fe), was prepared through a simple hydrothermal approach and characterized by means of X-ray diffraction,scanning electron microscopy,energy dispersive spectrometry,Fourier transform infrared spectroscopy,N2 absorption-desorption and UV-visual diffuse reflectance spectroscopy. The photocatalytic activity of prepared BiVO_4/MIL-53( Fe) catalysts was investigated in the degradation of RhB as a simulated pollutant and a possible reaction mechanism for the photocatalytic degradation of RhB was then proposed. The results indicate that after modifying BiVO_4 with metal-organic frameworks( MOFs),the surface area of BiVO_4/MIL-53( Fe) is improved greatly; moreover,the BiVO_4/MIL-53( Fe) composite also exhibits much higher photocatalytic activity than pristine BiVO_4 and MIL-53( Fe). In particular,the photocatalytic activity of BF-2 composite is about 5. 2 and 8. 1 times higher than those of pure MIL-53( Fe) and BiVO_4,respectively. In addition,BiVO_4/MIL-53( Fe) composite photocatalyst is rather stable and can keep its photocatalytic activity and structure after four recycling tests.
A new composite photocatalyst, viz., BiVO_4/MIL-53( Fe), was prepared through a simple hydrothermal approach and characterized by means of X-ray diffraction,scanning electron microscopy,energy dispersive spectrometry,Fourier transform infrared spectroscopy,N2 absorption-desorption and UV-visual diffuse reflectance spectroscopy. The photocatalytic activity of prepared BiVO_4/MIL-53( Fe) catalysts was investigated in the degradation of RhB as a simulated pollutant and a possible reaction mechanism for the photocatalytic degradation of RhB was then proposed. The results indicate that after modifying BiVO_4 with metal-organic frameworks( MOFs),the surface area of BiVO_4/MIL-53( Fe) is improved greatly; moreover,the BiVO_4/MIL-53( Fe) composite also exhibits much higher photocatalytic activity than pristine BiVO_4 and MIL-53( Fe). In particular,the photocatalytic activity of BF-2 composite is about 5. 2 and 8. 1 times higher than those of pure MIL-53( Fe) and BiVO_4,respectively. In addition,BiVO_4/MIL-53( Fe) composite photocatalyst is rather stable and can keep its photocatalytic activity and structure after four recycling tests.
引文
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[3]JIN C N,ZHANG S N,ZHANG Z J,CHEN Y.Mimic carbonic anhydrase using metal-organic frameworks for CO2capture and conversion[J].Inorg Chem,2018,57(4):2169-2174.
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[16]TIAN N,HUANG H W,He Y,GUO Y X,ZHANG T R,ZHANG Y H.Mediator-free direct Z-scheme photocatalytic system:BiVO4/gC3N4organic-inorganic hybrid photocatalyst w ith highly efficient visible-light-induced photocatalytic activity[J].Dalton Trans,2015,44(9):4297-4307.
[17]WANG D B,JIA F Y,WANG H,CHEN F,FANG Y,DONG W B,ZENG G M,LI X M,YANG Q,YUAN X Z.Simultaneously efficient adsorption and photocatalytic degradation of tetracycline by Fe-based M OFs[J].J Colloid Interf Sci,2018,519:273-284.
[18]MENG X C,LI Z Z,ZHANG Z S.Palladium nanoparticles and r GO co-modified BiVO4w ith greatly improved visible light-induced photocatalytic activity[J].Chemosphere,2018,198:1-12.
[19]SUBHAJYOTI S,SANTIMOY K,DEBABRATA P,RAJENDRA S.Acceler-ated photocatalytic degradation of organic pollutant over metalorganic framew ork M IL-53(Fe)under visible LED light mediated by persulfate[J].ACS Sustainable Chem Eng,2017,202:165-174.
[20]DONG W F,YANG L Y,HUANG Y M.Glycine post-synthetic modification of MIL-53(Fe)metal-organic framework with enhanced and stable peroxidase-like activity for sensitive glucose biosensing[J].Talanta,2017,167:359-366.
[21]XIA Q,HUANG B B,YUAN X Z,WANG H,WU Z B,JIANG L B,XIONG T,ZHANG J,ZENG G M,WANG H.Modified stannous sulfide nanoparticles w ith metal-organic framew ork:Tow ard efficient and enhanced photocatalytic reduction of chromium(VI)under visible light[J].J Colloid Interf Sci,2018,530:481-492.
[22]ZHANG C H,AI L H,JIANG J.Graphene hybridized photoactive iron terephthalate with enhanced photocatalytic activity for the degradation of Bhodamine B under visible light[J].Ind Eng Chem Res,2015,54(1):153-163.
[23]CAO J,ZHOU C C,LIN H L,XU B Y,CHEN S F.Surface modification of m-BiVO4,with wide band-gap semi-conductor BiOCl to largely improve the visible light induced photocatalytic activity[J].Appl Surf Sci,2013,284(11):263-269.
[24]VU T A,LE G H,DAO C D,DANG L Q,NGUYEN K T,NGUYEN Q K,DANG P T,TRAN H T K,DUANG Q T,NGUYEN T V,LEE G D.Arsenic removal from aqueous solutions by adsorption using novel M IL-53(Fe)as a highly efficient adsorbent[J].Rsc Adv,2015,5(7):5261-5268.
[25]APPAVU B,THIRIPURANTHAGAN S,RANGANATHAN S,ERUSAPPAN E,KANNAN K.BiVO4/N-rGO nano composites as highly efficient visible active photocatalyst for the degradation of dyes and antibiotics in eco system[J].Ecotoxicol Environ Safe,2018,151:118-126.
[26]CHEN R,ZHANG J F,WANG Y,CHEN X F,ZAPIEN J A,LEE C S.Graphitic carbon nitride nanosheet@metal-organic frame work core-shell nanoparticles for photo-chemo combination therapy[J].Nanoscale,2015,7(41):17299-17305.
[27]DONG X,DING W,ZHANG X,LIANG X.Mechanism and kinetics model of degradation of synthetic dyes by UV-vis/H2O2/Ferrioxalate complexes[J].Dyes Pigm,2007,74(2):470-476.
[28]HU L X,DENG G H,LU W C,PANG S W,HU X.Deposition of CdS nanoparticles on MIL-53(Fe)metal-organic framework with enhanced photocatalytic degradation of RhB under visible light irradiation[J].Appl Surf Sci,2017,410:401-413.
[29]JIANG Q,SPEHAR A M,HKANSSON M,SUOMI J,ALA-KLEME T,KULMALA S.Hot electron-induced cathodic electrochemilumine scence of rhodamine B at disposable oxide-coated aluminum electrodes[J].Electrochim Acta,2006,51(13):2706-2714.
[30]ZHANG Z,WANG W,SHANG M,YIN W.Photocatalytic degradation of rhodamine B and phenol by solution combustion synthesized BiVO4photocatalyst[J].Catal Commun,2010,11(11):982-986.
[31]YUAN X Z,WANG H,WU Y,ZENG G M,CHEN X H,LENG L J,WU Z B,LI H.One-pot self-assembly and photoreduction synthesis of silver nanoparticle-decorated reduced graphene oxide/M IL-125(Ti)photocatalyst w ith improved visible light photocatalytic activity[J].Appl Organomet Chem,2016,30(5):289-296.
[32]JI Y,CAO J,JIANG L,ZHANG Y,YI Z.G-C3N4/BiVO4,composites with enhanced and stable visible light photocatalytic activity[J].JAlloy Compd,2014,590(5):9-14.
[2]AL M H,ABID H R,SUNDERLAND B,WANG S B.Metal organic frameworks as a drug delivery system for flurbiprofen[J].Drug Des Dev Ther,2017,11:2685-2695.
[3]JIN C N,ZHANG S N,ZHANG Z J,CHEN Y.Mimic carbonic anhydrase using metal-organic frameworks for CO2capture and conversion[J].Inorg Chem,2018,57(4):2169-2174.
[4]YU X,WANG L,COHEN S M.Photocatalytic metal-organic frameworks for organic transformations[J].CrystEngComm,2017,19(29):4126-4136.
[5]ARAYA T,CHEN C C,JIA M K,JOHNSON D,LI R P,HUANG Y P.Selective degradation of organic dyes by a resin modified Fe-based metal-organic framew ork under visible light irradiation[J].Opt M ater,2017,64:512-523.
[6]AI L H,ZHANG C H,LI L I,JIANG J.Iron terephthalate metal-organic framework:Revealing the effective activation of hydrogen peroxide for the degradation of organic dye under visible light irradiation[J].Appl Catal B:Environ,2014,148/149:191-200.
[7]HOU W,YUAN X Z,YAN W,ZENG G M,DONG H R,CHEN X H,LENG J L,WU Z B,PENG L J.In situ synthesis of In2S3@M IL-125(Ti)core-shell microparticle for the removal of tetracycline from w astew ater by integrated adsorption and visi-ble-light-driven photocatalysis[J].Appl Catal B:Environ,2016,186:19-29.
[8]LIANG R W,JING F F,YAN G Y,WU L.Synthesis of CdS-decorated MIL-68(Fe)nanocomposites:Efficient and stable visible light photocatalysts for the selective reduction of 4-nitroaniline to p-phenylenediamine in w ater[J].Appl Catal B:Environ,2017,218:452-459.
[9]ZHAO D Q,WANG W W,ZONG W J,XIONG S M,ZHANG Q,JI F Y,XU X.Synthesis of Bi2S3/BiVO4heterojunction w ith a one-step hydrothermal method based on p H control and the evaluation of visible-light photocatalytic performance[J].M aterials,2017,10(8):891.
[10]NALBANDIAN M J,ZHANG M L,SANCHEZ J,CHOA Y H,CWIERTNY D M,MYUNG N V.Synthesis and optimization of BiVO4,and co-catalyzed BiVO4,nanofibers for visible light-activated photocatalytic degradation of aquatic micropollutants[J].J Mol Catal A:Chem,2015,404/405:18-26.
[11]LI J H,ZHAO W,GUO Y,WEI Z B.Facile synthesis and high activity of novel BiVO4/Fe VO4,hetero-junction photocatalyst for degradation of metronidazole[J].Appl Surf Sci,2015,351(7):270-279.
[12]ZHOU Z,LI Y,LV K,WU X,LI Q,LUO J.Fabrication of walnut-like BiVO4@Bi2S3heterojunction for efficient visible photocatalytic reduction of Cr(VI)[J].M ater Sci Semicond Process,2018,75:334-341.
[13]WANG Q Z,NIU T J,WANG L,YAN C X,HUANG J W.Fe F2/BiVO4heterojuction photoelectrodes and evaluation of its photoelectrochemical performance for w ater splitting[J].Chem Eng J,2018,337:506-514.
[14]LIANG R,JING F,SHEN L,QIN N,WU L.MIL-53(Fe)as a highly efficient bifunctional photocatalyst for the simultaneous reduction of Cr(VI)and oxidation of dyes[J].J Hazard M ater,2015,287:364-372.
[15]HUANG W Y,LIU N,ZHANG X D,WU M H,TANG L.Metal organic framework g-C3N4/M IL-53(Fe)heterojunctions w ith enhanced photocatalytic activity for Cr(VI)reduction under visible light[J].Appl Surf Sci,2017,425:107-116.
[16]TIAN N,HUANG H W,He Y,GUO Y X,ZHANG T R,ZHANG Y H.Mediator-free direct Z-scheme photocatalytic system:BiVO4/gC3N4organic-inorganic hybrid photocatalyst w ith highly efficient visible-light-induced photocatalytic activity[J].Dalton Trans,2015,44(9):4297-4307.
[17]WANG D B,JIA F Y,WANG H,CHEN F,FANG Y,DONG W B,ZENG G M,LI X M,YANG Q,YUAN X Z.Simultaneously efficient adsorption and photocatalytic degradation of tetracycline by Fe-based M OFs[J].J Colloid Interf Sci,2018,519:273-284.
[18]MENG X C,LI Z Z,ZHANG Z S.Palladium nanoparticles and r GO co-modified BiVO4w ith greatly improved visible light-induced photocatalytic activity[J].Chemosphere,2018,198:1-12.
[19]SUBHAJYOTI S,SANTIMOY K,DEBABRATA P,RAJENDRA S.Acceler-ated photocatalytic degradation of organic pollutant over metalorganic framew ork M IL-53(Fe)under visible LED light mediated by persulfate[J].ACS Sustainable Chem Eng,2017,202:165-174.
[20]DONG W F,YANG L Y,HUANG Y M.Glycine post-synthetic modification of MIL-53(Fe)metal-organic framework with enhanced and stable peroxidase-like activity for sensitive glucose biosensing[J].Talanta,2017,167:359-366.
[21]XIA Q,HUANG B B,YUAN X Z,WANG H,WU Z B,JIANG L B,XIONG T,ZHANG J,ZENG G M,WANG H.Modified stannous sulfide nanoparticles w ith metal-organic framew ork:Tow ard efficient and enhanced photocatalytic reduction of chromium(VI)under visible light[J].J Colloid Interf Sci,2018,530:481-492.
[22]ZHANG C H,AI L H,JIANG J.Graphene hybridized photoactive iron terephthalate with enhanced photocatalytic activity for the degradation of Bhodamine B under visible light[J].Ind Eng Chem Res,2015,54(1):153-163.
[23]CAO J,ZHOU C C,LIN H L,XU B Y,CHEN S F.Surface modification of m-BiVO4,with wide band-gap semi-conductor BiOCl to largely improve the visible light induced photocatalytic activity[J].Appl Surf Sci,2013,284(11):263-269.
[24]VU T A,LE G H,DAO C D,DANG L Q,NGUYEN K T,NGUYEN Q K,DANG P T,TRAN H T K,DUANG Q T,NGUYEN T V,LEE G D.Arsenic removal from aqueous solutions by adsorption using novel M IL-53(Fe)as a highly efficient adsorbent[J].Rsc Adv,2015,5(7):5261-5268.
[25]APPAVU B,THIRIPURANTHAGAN S,RANGANATHAN S,ERUSAPPAN E,KANNAN K.BiVO4/N-rGO nano composites as highly efficient visible active photocatalyst for the degradation of dyes and antibiotics in eco system[J].Ecotoxicol Environ Safe,2018,151:118-126.
[26]CHEN R,ZHANG J F,WANG Y,CHEN X F,ZAPIEN J A,LEE C S.Graphitic carbon nitride nanosheet@metal-organic frame work core-shell nanoparticles for photo-chemo combination therapy[J].Nanoscale,2015,7(41):17299-17305.
[27]DONG X,DING W,ZHANG X,LIANG X.Mechanism and kinetics model of degradation of synthetic dyes by UV-vis/H2O2/Ferrioxalate complexes[J].Dyes Pigm,2007,74(2):470-476.
[28]HU L X,DENG G H,LU W C,PANG S W,HU X.Deposition of CdS nanoparticles on MIL-53(Fe)metal-organic framework with enhanced photocatalytic degradation of RhB under visible light irradiation[J].Appl Surf Sci,2017,410:401-413.
[29]JIANG Q,SPEHAR A M,HKANSSON M,SUOMI J,ALA-KLEME T,KULMALA S.Hot electron-induced cathodic electrochemilumine scence of rhodamine B at disposable oxide-coated aluminum electrodes[J].Electrochim Acta,2006,51(13):2706-2714.
[30]ZHANG Z,WANG W,SHANG M,YIN W.Photocatalytic degradation of rhodamine B and phenol by solution combustion synthesized BiVO4photocatalyst[J].Catal Commun,2010,11(11):982-986.
[31]YUAN X Z,WANG H,WU Y,ZENG G M,CHEN X H,LENG L J,WU Z B,LI H.One-pot self-assembly and photoreduction synthesis of silver nanoparticle-decorated reduced graphene oxide/M IL-125(Ti)photocatalyst w ith improved visible light photocatalytic activity[J].Appl Organomet Chem,2016,30(5):289-296.
[32]JI Y,CAO J,JIANG L,ZHANG Y,YI Z.G-C3N4/BiVO4,composites with enhanced and stable visible light photocatalytic activity[J].JAlloy Compd,2014,590(5):9-14.