激光功率密度对相同曝光量下氧化石墨烯还原的影响（英文）
|
摘要
采用488nm连续激光在相同曝光量条件下对氧化石墨烯样品进行光照还原实验,并通过透射率和电阻率来表征还原氧化石墨烯的性质.结果表明:在还原过程中,通过透过率和电阻率表征的还原程度呈现相同的变化趋势.此外,还原过程分为两个步骤:达到相对稳定状态之前和达到相对稳定状态.在达到相对稳定状态之前,激光功率密度越低,样品的还原程度越高;但当达到相对稳定的状态后,激光功率密度越高,样品的还原程度越高.基于rGO中含氧官能团的变化,通过光子穿透能力和光对rGO的带隙调制作用对这一现象进行了分析.
Light reduction experiments were carried out with a 488 nm continuous laser under the same exposure.Simultaneously the properties of reduced graphene oxide(rGO)were characterized by transmittance and resistivity.The results show that during the reduction process,the degree of reduction characterized by resistivity and transmittance presents the same trend.Moreover,the reduction process is divided into two steps:before reaching the relatively stable state and reaching the relatively stable state.Before reaching the relatively stable state,the lower the laser power density,the higher the reduction degree of the samples;but when reaching the relatively stable state,the higher laser power density,the higher the reduction degree of the samples.This phenomenon is further analyzed by means of photon penetration and bandgap modulation,based on the change of oxygenated functional groups in rGO.
Light reduction experiments were carried out with a 488 nm continuous laser under the same exposure.Simultaneously the properties of reduced graphene oxide(rGO)were characterized by transmittance and resistivity.The results show that during the reduction process,the degree of reduction characterized by resistivity and transmittance presents the same trend.Moreover,the reduction process is divided into two steps:before reaching the relatively stable state and reaching the relatively stable state.Before reaching the relatively stable state,the lower the laser power density,the higher the reduction degree of the samples;but when reaching the relatively stable state,the higher laser power density,the higher the reduction degree of the samples.This phenomenon is further analyzed by means of photon penetration and bandgap modulation,based on the change of oxygenated functional groups in rGO.
引文
[1] KUMAR R,DHAWAN S K,SINGH H K,et al.Charge transport mechanism of thermally reduced graphene oxide and their fabrication for high performance shield against electromagnetic pollution[J].Materials Chemistry and Physics.2016,180:413-421.
[2] MADDAHFAR M,RAMEZANI M,MOSTAFA HOSSEINPOUR-MASHKANI S.Barium hexaferrite/graphene oxide:controlled synthesis and characterization and investigation of its magnetic properties[J].Applied Physics A.2016,122(8):752.
[3] GOUMRI M,VENTURINIJ W,BAKOUR A,et al.Tuning the luminescence and optical properties of graphene oxide and reduced graphene oxide functionnalized with PVA[J].Applied Physics A.2016,122(3):212.
[4] SCH?CHE S,HONG N,KHORASANINEJAD M,et al.Optical properties of graphene oxide and reduced graphene oxide determined by spectroscopic ellipsometry[J].Applied Surface Science.2017,421:778-782.
[5] LOH K P,BAO Q,EDA G,et al.Graphene oxide as a chemically tunable platform for optical applications[J].Nature Chemistry.2010,2(12):1015-1024.
[6] PARK S,LEE K S,BOZOKLU G,et al.Graphene oxide papers modified by divalent ions—enhancing mechanical properties via chemical cross-linking[J].Acs Nano.2008,2(3):572-578.
[7] CHANG I L,CHEN J A.The molecular mechanics study on mechanical properties of graphene and graphite[J].Applied Physics A.2015,119(1):265-274.
[8] ZHU Y,MURALI S,CAI W,et al.Graphene and graphene oxide:synthesis,properties,and applications[J].Advanced Materials.2010,22(46):3906-3924.
[9] SHAHIL K M F,BALANDIN A A.Thermal properties of graphene and multilayer graphene:applications in thermal interface materials[J].Solid State Communications.2012,152(15):1331-1340.
[10] SHEN H,SHI Y,WANG X.Synthesis,charge transport and device applications of graphene nanoribbons[J].Synthetic Metals.2015,210:109-122.
[11] KIM H,AHN J H.Graphene for flexible and wearable device applications[J].Carbon.2017,120:244-257.
[12] ZHANGY L,GUO L,XIA H,et al.Photoreduction of graphene oxides:methods,properties,and applications[J].Advanced Optical Materials.2014,2(1):10-28.
[13] STANKOVICH S,DIKIN D A,PINER R D,et al.Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide[J].Carbon.2007,45(7):1558-1565.
[14] LIN S,BUEHLER M J.Thermal transport in monolayer graphene oxide:Atomistic insights into phonon engineering through surface chemistry[J].Carbon.2014,77(77):351-359.
[15] COTE L J,CRUZSILVA R,HUANG J.Flash reduction and patterning of graphite oxide and its polymer composite[J].Journal of the American Chemical Society.2009,131(31):11027-11032.
[16] GILJE S,DUBIN S,BADAKHSHAN A,et al.Photothermal deoxygenation of graphene oxide for patterning and distributed ignition applications[J].Advanced Materials.2010,22(3):419-423.
[17] LI Y C,YEH T F,HUANG H C,et al.Graphene oxide-based micropatterns via high-throughput multiphoton-induced reduction and ablation[J].Optics Express.2014,22(16):19726-19734.
[18] PREZIOSO S,PERROZZI F,DONARELLI M,et al.Large area extreme-UV lithography of graphene oxide via spatially resolved photoreduction[J].Langmuir the Acs Journal of Surfaces&Colloids.2012,28(12):5489-5495.
[19] HUMMERS W S,OFFEMAN R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society.1958,80(6):1339-1339.
[20] KRISHNAMOORTHY K,VEERAPANDIAN M,MOHAN R,et al.Investigation of Raman and photoluminescence studies of reduced graphene oxide sheets[J].Applied Physics A.2012,106(3):501-506.
[21] LI B,ZHANG X,CHEN P,et al.Waveband-dependent photochemical processing of graphene oxide in fabricating reduced graphene oxide film and graphene oxide–Ag nanoparticles film[J].Rsc Advances.2013,4(5):2404-2408.
[22] ZHOU S,BONGIORNO A.Origin of the chemical and kinetic stability of graphene oxide[J].Scientific Reports.2013,3(8):2484.
[23] NOVOSELOV K S,FAL′KO V I,COLOMBO L,et al.A roadmap for graphene[J].Nature.2012,490(7419):192-200.
[24] KIM K S,ZHAO Y,JANG H,et al.Large-scale pattern growth of graphene films for stretchable transparent electrodes[J].Nature.2009,457(7230):706.
[25] GUO L,SHAO R Q,ZHANG Y L,et al.Bandgap tailoring and synchronous microdevices patterning of graphene oxides[J].Physchemc.2012,116(5):3594-3599.
[26] GUO L,JIANG H B,SHAO R Q,et al.Two-beam-laser interference mediated reduction,patterning and nanostructuring of graphene oxide for the production of a flexible humidity sensing device[J].Carbon.2012,50(4):1667-1673.
[2] MADDAHFAR M,RAMEZANI M,MOSTAFA HOSSEINPOUR-MASHKANI S.Barium hexaferrite/graphene oxide:controlled synthesis and characterization and investigation of its magnetic properties[J].Applied Physics A.2016,122(8):752.
[3] GOUMRI M,VENTURINIJ W,BAKOUR A,et al.Tuning the luminescence and optical properties of graphene oxide and reduced graphene oxide functionnalized with PVA[J].Applied Physics A.2016,122(3):212.
[4] SCH?CHE S,HONG N,KHORASANINEJAD M,et al.Optical properties of graphene oxide and reduced graphene oxide determined by spectroscopic ellipsometry[J].Applied Surface Science.2017,421:778-782.
[5] LOH K P,BAO Q,EDA G,et al.Graphene oxide as a chemically tunable platform for optical applications[J].Nature Chemistry.2010,2(12):1015-1024.
[6] PARK S,LEE K S,BOZOKLU G,et al.Graphene oxide papers modified by divalent ions—enhancing mechanical properties via chemical cross-linking[J].Acs Nano.2008,2(3):572-578.
[7] CHANG I L,CHEN J A.The molecular mechanics study on mechanical properties of graphene and graphite[J].Applied Physics A.2015,119(1):265-274.
[8] ZHU Y,MURALI S,CAI W,et al.Graphene and graphene oxide:synthesis,properties,and applications[J].Advanced Materials.2010,22(46):3906-3924.
[9] SHAHIL K M F,BALANDIN A A.Thermal properties of graphene and multilayer graphene:applications in thermal interface materials[J].Solid State Communications.2012,152(15):1331-1340.
[10] SHEN H,SHI Y,WANG X.Synthesis,charge transport and device applications of graphene nanoribbons[J].Synthetic Metals.2015,210:109-122.
[11] KIM H,AHN J H.Graphene for flexible and wearable device applications[J].Carbon.2017,120:244-257.
[12] ZHANGY L,GUO L,XIA H,et al.Photoreduction of graphene oxides:methods,properties,and applications[J].Advanced Optical Materials.2014,2(1):10-28.
[13] STANKOVICH S,DIKIN D A,PINER R D,et al.Synthesis of graphene-based nanosheets via chemical reduction of exfoliated graphite oxide[J].Carbon.2007,45(7):1558-1565.
[14] LIN S,BUEHLER M J.Thermal transport in monolayer graphene oxide:Atomistic insights into phonon engineering through surface chemistry[J].Carbon.2014,77(77):351-359.
[15] COTE L J,CRUZSILVA R,HUANG J.Flash reduction and patterning of graphite oxide and its polymer composite[J].Journal of the American Chemical Society.2009,131(31):11027-11032.
[16] GILJE S,DUBIN S,BADAKHSHAN A,et al.Photothermal deoxygenation of graphene oxide for patterning and distributed ignition applications[J].Advanced Materials.2010,22(3):419-423.
[17] LI Y C,YEH T F,HUANG H C,et al.Graphene oxide-based micropatterns via high-throughput multiphoton-induced reduction and ablation[J].Optics Express.2014,22(16):19726-19734.
[18] PREZIOSO S,PERROZZI F,DONARELLI M,et al.Large area extreme-UV lithography of graphene oxide via spatially resolved photoreduction[J].Langmuir the Acs Journal of Surfaces&Colloids.2012,28(12):5489-5495.
[19] HUMMERS W S,OFFEMAN R E.Preparation of graphitic oxide[J].Journal of the American Chemical Society.1958,80(6):1339-1339.
[20] KRISHNAMOORTHY K,VEERAPANDIAN M,MOHAN R,et al.Investigation of Raman and photoluminescence studies of reduced graphene oxide sheets[J].Applied Physics A.2012,106(3):501-506.
[21] LI B,ZHANG X,CHEN P,et al.Waveband-dependent photochemical processing of graphene oxide in fabricating reduced graphene oxide film and graphene oxide–Ag nanoparticles film[J].Rsc Advances.2013,4(5):2404-2408.
[22] ZHOU S,BONGIORNO A.Origin of the chemical and kinetic stability of graphene oxide[J].Scientific Reports.2013,3(8):2484.
[23] NOVOSELOV K S,FAL′KO V I,COLOMBO L,et al.A roadmap for graphene[J].Nature.2012,490(7419):192-200.
[24] KIM K S,ZHAO Y,JANG H,et al.Large-scale pattern growth of graphene films for stretchable transparent electrodes[J].Nature.2009,457(7230):706.
[25] GUO L,SHAO R Q,ZHANG Y L,et al.Bandgap tailoring and synchronous microdevices patterning of graphene oxides[J].Physchemc.2012,116(5):3594-3599.
[26] GUO L,JIANG H B,SHAO R Q,et al.Two-beam-laser interference mediated reduction,patterning and nanostructuring of graphene oxide for the production of a flexible humidity sensing device[J].Carbon.2012,50(4):1667-1673.