氧化锡锑/石墨烯的制备及电除盐性能研究
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摘要
采用水热合成法制备了不同掺杂比例的氧化锡锑/石墨烯纳米复合材料,用SEM、XPS和XRD进行表征,考察了该材料的电化学性能,并进行CDI测试。实验结果表明,ATO纳米颗粒的嵌入可以有效抑制石墨烯片间的自团聚效应,形成的复合材料呈现3D结构。当m(ATO)∶m(RGO)为20%时,ATO/RGO复合材料的比电容量(124.1 F/g)和电吸附性能(8.63 mg/g)最佳,远远超出石墨烯(74.3 F/g,3.98 mg/g)。
A kind of nano-composite material,antimony tin oxide/reduced graphene oxide(ATO/RGO) with different pro-portions,has been synthesized by hydrothermal method,characterized by SEM,XPS and XRD technologies. Its electrochemical performance has been investigated,and CDI tests accomplished. The experimental results show that the embedding in of antimony oxide(ATO) nano-particles can effectively inhibit the agglomeration effect between graphene sheets,and the composite materials formed exhibits a three-dimentional structure. When m(ATO)∶m(RGO) is20%,the specific capacitance of ATO/RGO composite materials is 124.1 F/g and electrosorptive capacity 8.63 mg/g,which are the best. They are far higher than those of graphene,74.3 F/g and 3.98 mg/g,respectively.
A kind of nano-composite material,antimony tin oxide/reduced graphene oxide(ATO/RGO) with different pro-portions,has been synthesized by hydrothermal method,characterized by SEM,XPS and XRD technologies. Its electrochemical performance has been investigated,and CDI tests accomplished. The experimental results show that the embedding in of antimony oxide(ATO) nano-particles can effectively inhibit the agglomeration effect between graphene sheets,and the composite materials formed exhibits a three-dimentional structure. When m(ATO)∶m(RGO) is20%,the specific capacitance of ATO/RGO composite materials is 124.1 F/g and electrosorptive capacity 8.63 mg/g,which are the best. They are far higher than those of graphene,74.3 F/g and 3.98 mg/g,respectively.
引文
[1]Lee J Y,Seo S J,Yun S H,et al.Preparation of ion exchanger layered electrodes for advanced membrane capacitive deionization(MCDI)[J].Water Research,2011,45(17):5375-5380.
[2]Oren Y.Capacitive deionization(CDI)for desalination and water treatment:past,present and future(a review)[J].Desalination,2008,228(1/2/3):10-29.
[3]Novoselov K S,Jiang D,Schedin F,et al.Two-dimensional atomic crystals[J].Proceedings of the National Academy of Sciences of the United States of America,2005,102(30):10451-10453.
[4]Geim A K,Novoselov K S.The rise of graphene[J].Nature Materials,2007,6(3):183-191.
[5]Gao W.The chemistry of graphene oxide[M].Springer International Publishing,2015:61-95.
[6]Li H,Pan L,Lu T,et al.A comparative study on electrosorptive behavior of carbon nanotubes and graphene for capacitive deionization[J].Journal of Electroanalytical Chemistry,2011,653(1/2):40-44.
[7]Zhang J,Zhao X S.Conducting polymers directly coated on reduced graphene oxide sheets as high-performance supercapacitor electrodes[J].Journal of Physical Chemistry C,2012,116(9):5420-5426.
[8]Fan W,Xia Y Y,Weng W T,et al.Nitrogen-doped graphene hollow nanospheres as novel electrode materials for supercapacitor applications[J].Journal of Power Sources,2013,243(6):973-981.
[9]Qian Y,Lu S,Gao F.Preparation of Mn O2/graphene composite as electrode material for supercapacitors[J].Journal of Materials Science,2011,46(10):3517-3522.
[10]Shi L,Xu Y,Li Q.Controlled fabrication of Sn O2arrays of well-aligned nanotubes and nanowires[J].Nanoscale,2010,2(10):2104-2108.
[2]Oren Y.Capacitive deionization(CDI)for desalination and water treatment:past,present and future(a review)[J].Desalination,2008,228(1/2/3):10-29.
[3]Novoselov K S,Jiang D,Schedin F,et al.Two-dimensional atomic crystals[J].Proceedings of the National Academy of Sciences of the United States of America,2005,102(30):10451-10453.
[4]Geim A K,Novoselov K S.The rise of graphene[J].Nature Materials,2007,6(3):183-191.
[5]Gao W.The chemistry of graphene oxide[M].Springer International Publishing,2015:61-95.
[6]Li H,Pan L,Lu T,et al.A comparative study on electrosorptive behavior of carbon nanotubes and graphene for capacitive deionization[J].Journal of Electroanalytical Chemistry,2011,653(1/2):40-44.
[7]Zhang J,Zhao X S.Conducting polymers directly coated on reduced graphene oxide sheets as high-performance supercapacitor electrodes[J].Journal of Physical Chemistry C,2012,116(9):5420-5426.
[8]Fan W,Xia Y Y,Weng W T,et al.Nitrogen-doped graphene hollow nanospheres as novel electrode materials for supercapacitor applications[J].Journal of Power Sources,2013,243(6):973-981.
[9]Qian Y,Lu S,Gao F.Preparation of Mn O2/graphene composite as electrode material for supercapacitors[J].Journal of Materials Science,2011,46(10):3517-3522.
[10]Shi L,Xu Y,Li Q.Controlled fabrication of Sn O2arrays of well-aligned nanotubes and nanowires[J].Nanoscale,2010,2(10):2104-2108.