静电纺丝制备MoS_2/TiO_2复合纳米纤维材料
|
摘要
以TiO_2和MoS_2为基底的纳米材料在太阳能电池、光电开关、光催化等方面应用广泛,但是单纯的TiO_2和MoS_2纳米材料还有诸多不足,例如:光致电子和空穴对的转移速度慢,复合率高,导致光催化量子效率低.因此本文通过静电纺丝技术合成TiO_2/MoS_2复合纳米材料,以改善单一纳米材料的不足.首先,通过超声的方法将多层片状的MoS_2固体粉碎变成小片、单层结构,之后加入TiO_2的静电纺丝前体溶液中,通过调控静电纺丝的参数,得到MoS_2在TiO_2纳米管分散的纳米纤维结构.通过调节MoS_2浓度,可以有效改善复合材料的形貌,并进一步利用XRD、TEM、SEM、IR等方法对TiO_2/MoS_2复合纳米材料进行详细表征.本文所制备的纳米复合材料,MoS_2均匀镶嵌在TiO_2内部,不易脱落,结构稳定,将在太阳能电池、光电开关、光催化等方面有潜在的应用价值.
Nano-materials based on TiO_2 and MoS_2 have been widely used in solar cells,photoelectric switches and photocatalysis.However,the pure TiO_2 and MoS_2 nano-materials have many disadvantages,such as the slow transfer rate of photoinduced electron and hole pairs,the high recombination rate,and the low quantum efficiency of photocatalysis.Herein,TiO_2/MoS_2 composite nanomaterials were synthesized by electrospinning technology in order to improve the shortage of single nanomaterials.First of all,the multilayer flake MoS_2 solid was crushed into small pieces and single layer structure by ultrasonic method,and then the nano fiber structure of MoS_2 dispersed in TiO_2 nanotubes was obtained by adding the precursor solution of TiO_2 electrospinning and adjusting the parameters of electrospinning.The morphology of the composite could be improved by adjusting the concentration of MoS_2,and the composite was characterized by XRD,TEM,SEM and IR.The prepared nano-composite MoS_2 is embedded in the TiO_2 homogeneously,which is not easy to fall off and has stable structure,and it will have potential application value in solar cell,photoelectric switch and photocatalysis.
Nano-materials based on TiO_2 and MoS_2 have been widely used in solar cells,photoelectric switches and photocatalysis.However,the pure TiO_2 and MoS_2 nano-materials have many disadvantages,such as the slow transfer rate of photoinduced electron and hole pairs,the high recombination rate,and the low quantum efficiency of photocatalysis.Herein,TiO_2/MoS_2 composite nanomaterials were synthesized by electrospinning technology in order to improve the shortage of single nanomaterials.First of all,the multilayer flake MoS_2 solid was crushed into small pieces and single layer structure by ultrasonic method,and then the nano fiber structure of MoS_2 dispersed in TiO_2 nanotubes was obtained by adding the precursor solution of TiO_2 electrospinning and adjusting the parameters of electrospinning.The morphology of the composite could be improved by adjusting the concentration of MoS_2,and the composite was characterized by XRD,TEM,SEM and IR.The prepared nano-composite MoS_2 is embedded in the TiO_2 homogeneously,which is not easy to fall off and has stable structure,and it will have potential application value in solar cell,photoelectric switch and photocatalysis.
引文
[1]Mao Xu,Zou Jianpeng,Li Hongchao,et al.Magnetron sputtering fabrication and photoelectric properties of WSe2film solar cell device[J].Applied Surface Science,2018,444:126.
[2]Yu Qiming,Shan Wenzhe,Wang Hongming.Theoretical design of sandwich two-dimensional structures for photocatalysts and nano-optoelectronic devices[J].Journal Materials Science,2018,53:8274.
[3]Tang Wenwei,Zhang Yazhou,Chen Xiaoying,et al.Fe2O3/TiO2film electrodes prepared by the forced hydrolysis method and their photoelectrocatalytic performance[J].Materials Letter,2018,217:109.
[4]Deng Xiaoyong,Zhang Huixuan,Guo Ruonan,et al.Effect of fabricating parameters on photoelectrocatalytic performance of CeO2/TiO2nanotube arrays photoelectrode[J].Separation and Purification Technology,2018,193:264.
[5]Cardoso J C,Stulp S,de Brito J F,et al.MOFs based on ZIF-8deposited on TiO2nanotubes increase the surface adsorption of CO2and its photoelectrocatalytic reduction to alcohols in aqueous media[J].Applied Catalysis B:Environmental,2018,225:563.
[6]Huang Minggao,Huang Bin,Li Nanxi,et al.Facile deposition of Cu2O in a UV-enhanced sulfite-mediated glucose fuel cell for photoelectrocatalytic reduction of oxygen[J].Journal of Alloys and Compounds,2018,740:355.
[7]Kuchi Charan,Harish G S,Sreedhara Reddy P.Effect of polymer concentration,needle diameter and annealing temperature on TiO2-PVPcomposite nanofibers synthesized by electrospinning technique[J].Ceramics International,2017,12:138.
[8]Wang Yu,Hashimoto Takeji,Li Changchou,et al.Extension rate of the straight jet in electrospinning of poly(N-isopropyl acrylamide)solutions in dimethylformamide:influences of flow rate and applied voltage[J].Journal of Polymer Science,2018,56:319.
[9]García-Márquez A,Glatzel S,Kraupner A,et al.Branch-Like iron nitride and carbide magnetic fibres via electrospinning technique[J].Chemistry-A European Journal,2017,5:585.
[10]Dong Weiyang,Yao Youwei,Li Li,et al.Three-dimensional interconnected mesoporous anatase TiO2exhibiting unique photocatalytic performances[J].Applied Catalysis B:Environmental,2017,217:293.
[11]Rohini Singh,Suman Dutta.Synthesis and characterization of solar photoactive TiO2nanoparticles with enhanced structural and optical properties[J].Advanced Powder Technology,2018,29:211.
[12]Schwarz P F,Turro N J,Bossmann S H,et al.A new method to determine the generation of hydroxyl radicals in illuminated TiO2suspensions[J].Journal Physical Chemistry,1997,101:7127.
[13]Sixto Malato,Juli an Blanco,Alfonso Vidal.Studies on photo-catalysis degradation of rhodamine B using titanium dioxide-carbon composite materials[J].Solar Energy,2003,75:329.
[14]Wang R,Hanhimato K,Fujishima A.Light-induced amphiphilic surfaces[J].Nature,1997,388:431.
[15]Wang R,Hanhimato K,Fujishima A.Photogeneration of highly amphiphilic TiO2surfaces[J].Advanced Materials,1998,10:135.
[2]Yu Qiming,Shan Wenzhe,Wang Hongming.Theoretical design of sandwich two-dimensional structures for photocatalysts and nano-optoelectronic devices[J].Journal Materials Science,2018,53:8274.
[3]Tang Wenwei,Zhang Yazhou,Chen Xiaoying,et al.Fe2O3/TiO2film electrodes prepared by the forced hydrolysis method and their photoelectrocatalytic performance[J].Materials Letter,2018,217:109.
[4]Deng Xiaoyong,Zhang Huixuan,Guo Ruonan,et al.Effect of fabricating parameters on photoelectrocatalytic performance of CeO2/TiO2nanotube arrays photoelectrode[J].Separation and Purification Technology,2018,193:264.
[5]Cardoso J C,Stulp S,de Brito J F,et al.MOFs based on ZIF-8deposited on TiO2nanotubes increase the surface adsorption of CO2and its photoelectrocatalytic reduction to alcohols in aqueous media[J].Applied Catalysis B:Environmental,2018,225:563.
[6]Huang Minggao,Huang Bin,Li Nanxi,et al.Facile deposition of Cu2O in a UV-enhanced sulfite-mediated glucose fuel cell for photoelectrocatalytic reduction of oxygen[J].Journal of Alloys and Compounds,2018,740:355.
[7]Kuchi Charan,Harish G S,Sreedhara Reddy P.Effect of polymer concentration,needle diameter and annealing temperature on TiO2-PVPcomposite nanofibers synthesized by electrospinning technique[J].Ceramics International,2017,12:138.
[8]Wang Yu,Hashimoto Takeji,Li Changchou,et al.Extension rate of the straight jet in electrospinning of poly(N-isopropyl acrylamide)solutions in dimethylformamide:influences of flow rate and applied voltage[J].Journal of Polymer Science,2018,56:319.
[9]García-Márquez A,Glatzel S,Kraupner A,et al.Branch-Like iron nitride and carbide magnetic fibres via electrospinning technique[J].Chemistry-A European Journal,2017,5:585.
[10]Dong Weiyang,Yao Youwei,Li Li,et al.Three-dimensional interconnected mesoporous anatase TiO2exhibiting unique photocatalytic performances[J].Applied Catalysis B:Environmental,2017,217:293.
[11]Rohini Singh,Suman Dutta.Synthesis and characterization of solar photoactive TiO2nanoparticles with enhanced structural and optical properties[J].Advanced Powder Technology,2018,29:211.
[12]Schwarz P F,Turro N J,Bossmann S H,et al.A new method to determine the generation of hydroxyl radicals in illuminated TiO2suspensions[J].Journal Physical Chemistry,1997,101:7127.
[13]Sixto Malato,Juli an Blanco,Alfonso Vidal.Studies on photo-catalysis degradation of rhodamine B using titanium dioxide-carbon composite materials[J].Solar Energy,2003,75:329.
[14]Wang R,Hanhimato K,Fujishima A.Light-induced amphiphilic surfaces[J].Nature,1997,388:431.
[15]Wang R,Hanhimato K,Fujishima A.Photogeneration of highly amphiphilic TiO2surfaces[J].Advanced Materials,1998,10:135.