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Cu/S-TiO2光催化剂的制备及其可见光催化性能(英文) 被引量:6

Preparation of Cu/S-TiO_2 Photocatalysts and their Catalytic Activities under Visible Light
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摘要 分别采用化学镀铜法、化学还原法、浸渍法制备了3种Cu负载的S-TiO2光催化剂,综合利用UV-Vis、XRD、XPS、EXAFS、SEM和FESEM技术对制备的Cu/S-TiO2光催化材料的结构和光电子性能进行了表征.结果表明,化学镀铜法和浸渍法负载的铜物种为Cu2O和CuO,化学还原法制备的铜为Cu和Cu2O.化学镀铜法制备的Cu/S-TiO2光催化剂不仅对可见光具有很强的吸收能力,而且负载的铜物种连续、均匀地分散在S-TiO2表面,这种结构有利于光生电子的捕获、转移和分离.因此,化学镀铜法制备的Cu/S-TiO2在不同可见光波段(λ>420 nm,λ>500 nm)条件下光催化重整甲醇水溶液制氢反应中都表现出最高的催化活性,同时在模拟太阳光条件下以及稳定性实验的测试中也表现出优秀的性质,因此对其催化作用/反应机理进行了探讨. Cu was loaded on the S-doped TiO2 by methods of electroless plating,wet impregnation and chemical reduction,respectively.The physical structure and chemical properties of the prepared Cu/S-TiO2 were characterized by UV-Vis,XRD,XPS,EXAFS and FESEM techniques.It was illustrated that copper species loaded by electroless copper plating and wet impregnation method were Cu2O/CuO,while Cu/Cu2O was loaded by chemical reduction method.The Cu/S-TiO2 prepared by electroless plating method showed excellent visible light absorption ability.The photocatalytic activities under visible light was investigated using various filtered wavelengths of light(λ 420 nm,λ 500 nm) for a period of 20 h.Moreover,the electroless plated copper on S-TiO2 were highly dispersed,which could facilitate the photo-generated charges capture,transfer and separation.Thus,the catalyst exhibited the highest photocatalytic activity and stability for hydrogen generation in methanol solution under simulated sunlight(Xe lamp),and a possible catalytic effect/reaction mechanism was proposed.
出处 《分子催化》 EI CAS CSCD 北大核心 2012年第2期174-183,共10页 Journal of Molecular Catalysis(China)
基金 Supported by “Taishan Scholars” Program(ts200824085) the Foundation of State Key Laboratory of Catalysis Project,DICP CAS(N-10-02)
关键词 光催化剂 Cu/S-TiO2 化学镀层 甲醇水溶液 photocatalyt Cu/S-TiO2 electroless plating hydrogen methanol solution
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  • 1Patsoura A,Kondarides D I,Verykios X E.Photocataly-tic degradation of organic pollutants with simultaneousproduction of hydrogen[J].Catal.Today,2007,124:94-102.
  • 2Wu G,Chen T,Su W,et al.H2 production with ultra-low CO selectivity via photocatalytic reforming of methanolon Au/TiO2 catalyst[J].Int.J.Hydrogen Energy,2008,33:1 243.
  • 3Fujishima A,Honda K.Electrochemical photolysis of wa-ter at a semiconductor electrode[J].Nature,1972,238:37-38.
  • 4Sayama K,Arakawa H.Effect of carbonate salt additionon the photocatalytic decomposition of liquid water overPt-TiO2 catalyst[J].J.Chem.Soc.,Faraday Trans,1997,93:1 647-1 654.
  • 5Galinska A,Walendziewski.Photocatalytic water splittingover Pt/TiO2 in the presence of sacrificial reagents[J].J.Energy Fuels,2005,19:1 143-1 147.
  • 6Park J W,Kang M.Synthesis and characterization ofAgxO,and hydrogen production from methanol photode-composition over the mixture of AgxO and TiO2[J].Int.J.Hydrog Energy,2007,32:4 840-4 846.
  • 7Fu X L,Long J L,Wang X X,et al.Photocatalytic re-forming of biomass:a systematic study of hydrogen evolu-tion from glucose solution[J].Int.J.Hydrog Energy,2008,33:6 484-6 491.
  • 8Sakthivel S,Shankar M,Palanichamy M,et al.En-hancement of photocatalytic activity by metal deposition:characterisation and photonic efficiency of Pt,Au and Pddeposited on TiO2 catalyst[J].Water Res,2004,38:3 001-3 008.
  • 9KocíK,MatějováL,ObalováL,et al.Effect of silverdoping on the TiO2 for photocatalytic reduction of CO2[J].Appl.Catal.B:Environmental,2010,96:239-244.
  • 10Tseng I H,Chang W C,Wu J C S.Photoreduction ofCO2 using sol-gel derived titania and titania-supportedcopper catalysts[J].Appl.Catal.B:Environm,2002,37:37-48.

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  • 5Akira Fujishima,Tata N. Rao,Donald A. Tryk.Titanium dioxide photocatalysis[J].Journal of Photochemistry & Photobiology C: Photochemistry Reviews.2000(1)
  • 6Michael J. Kenney,Ming Gong,Yanguang Li,Justin Z. Wu,Ju Feng,Mario Lanza,Hongjie Dai.High-Performance Silicon Photoanodes Passivated with Ultrathin Nickel Films for Water Oxidation[J].Science.2013(6160)
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  • 9R. Hahn,J.M. Macak,P. Schmuki.Rapid anodic growth of TiO 2 and WO 3 nanotubes in fluoride free electrolytes[J].Electrochemistry Communications.2006(5)
  • 10Hiroaki Tsuchiya,Jan M. Macak,Irina Sieber,Luciano Taveira,Andrei Ghicov,Kamila Sirotna,Patrik Schmuki.Self-organized porous WO 3 formed in NaF electrolytes[J].Electrochemistry Communications.2005(3)

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