以三维石墨烯和苯胺为原料,使用化学氧化聚合法制备二元复合材料三维石墨烯/聚苯胺纳米线(3D-rGO/PANI),石墨烯既是气敏材料的组成部分,又是聚苯胺的生长模板。复合材料的结构表征使用扫描电镜、红外光谱仪和比表面测试仪。结果表明:PANI是线状结构,复合材料有大量空隙,比表面积大。室温下,和纯PANI相比,3D-rGO/PANI对H2表现出较好的气敏性能,H2浓度为500×10-6时,灵敏度达到10.6。复合材料的大比表面积和协同效应有助于气敏性能提高。
A hydrogen gas sensor based on three dimensional graphene/polyaniline (3D-rGO/PANI) hybrid were presented.PANI nanofibers were anchored on the surface of 3D-rGO sheets by using 3D-rGO as templates.The developed hybrid was characterized by SEM,FT-IR and BET analysis.H2 gas sensing performance of hybrid was studied and compared with that of sensor based on bare PANI nanofibers.It shown that the synergetic behavior and large surface area of hybrid allowed excellent sensitivity.3D-rGO/PANI sensor showed better response to H2 gas than that of bare PANI nanofiber.The sensitivity could reach 10.6 for H2 of 500×10-6.
[1] Gong F L,Liu H Z,Liu C Y,et al.3D hierarchical In2O3 nanoarchitectures consisting of nanocuboids and nanosheets for chemical sensors with enhanced performances[J].Materials Letters,2016,163:236-239.
[2] Xu K,Zhu L H,Li J et al.Effect of dopants on percolation behaviors and gas sensing characteristics of polyaniline film[J].Electrochimica Acta,2006,52(2):723-727.
[3] Zhao J,Xie Y,Le Z G,et al.Preparation and characterization of an electromagnetic material the graphene nanosheet polythiophene composite[J].Synthetic Metals,2013,181:110-116.
[4] Liu Y,Ma Y,Guang S Y,et al.Polyaniline graphene composites with a three dimensional array based nanostructure for high performance supercapacitors[J].Carbon,2015,83:79-89.
[5] Tiwari D C,Atri P,Sharma R,et al.Sensitive detection of ammonia by reduced graphene oxide polypyrrole nanocomposites[J].Synthetic Metals,2015,203:228-234.
[6] Liu X,Sun J B,Zhang X T,et al.Novel 3D graphene aerogel ZnO composites as efficient detection for NO2 at room temperature[J].Sensors and Actuators B:Chemical,2015,211:220-226.
[7] Becerril H A,Mao J,Liu Z F,et al.Evaluation of solution processed reduced graphene oxide films as transparent conductors[J].ACS Nano,2008,2(3):463-470.
[8] Qin N,Wang X H,Xiang Q,et al.A biomimetic nest like ZnO controllable synthesis and enhanced ethanol response[J].Sensors and Actuators B:Chemical,2014,191:770-778.
[9] Kakarla R R,Byung C S,Chi H Y,et al.Coating of multiwalled carbon nanotubes with polymer nanospheres through microemulsion polymerization[J].Journal of Colloid Interface Science,2009,340(2):160-165.
[10] Reddy K R,Lee K P,Kim J Y.Self assembly and graft polymerization route to monodispersed Fe3O4@SiO2 polyaniline core shell composite nanoparticles:physical properties[J].Journal of Nanoscience Nanotechnology,2008,8(11):5632-5639.
[11] Liu Y,Deng R,Wang Z,et al.Carboxyl functionalized graphene oxide polyaniline composite as a promising supercapacitor material[J].Journal of Materials Chemistry,2012,2(27):13619-13624.
[12] Gong F L,Gong Y Y,Liu H Z,et al.Porous In2O3 nanocuboids modified with Pd nano particles for chemical sensors[J].Sensors and Actuators B:Chemical,2016,223:384-391.
[13] Huang X L,Hu N T,Gao R G,et al.Reduced graphene oxide polyaniline hybrid preparation characterization and its applications for ammonia gas sensing[J].Journal of Materials Chemistry,2012,22(42):22488-22495.
[14] Laith Al Mashat,Koo Shin,Kourosh Kalantar Zadeh.Graphene polyaniline nanocomposite for hydrogen sensing[J].Journal of Physical Chemistry C,2010,114(39):16168-16173.
基金资助
国家自然科学基金(21606211);河南省科技计划基础与前沿技术研究计划(152300410127);河南省高等学校重点科研项目(18B430017);郑州轻工业学院2017年博士科研基金(2017BSJJ056)
PDF
(1547KB)
