利用水热法制备了纳米ZnO颗粒,同时采用聚噻吩对其原位改性,利用X射线粉末衍射仪、扫描电镜和红外光谱对所制ZnO复合材料的结构和形貌进行表征分析。将合成的改性ZnO纳米颗粒用于传感材料,研究了其在检测挥发性有机物中的气敏性能。结果表明:聚噻吩掺杂纳米ZnO有利于复合材料气敏性能的提高,添加量不同对丙二醇的选择性和响应有明显影响,当掺杂量为10%(质量分数)时,对5×10-6的丙二醇的响应达到14。说明聚噻吩改性的纳米ZnO是可以有效检测丙二醇的气敏性材料。
Zinc oxide nanoparticles were prepared by hydrothermal route and modified with polythiophene (PTh).The structure and morphology of as-synthesized composites were characterized by X-ray powder diffraction,scanning electron microscopy and FT-IR techniques.The PTh-doped ZnO nanoparticles were used as sensing material and the sensing properties were studied in the detection of volatile organic compounds (VOCs).The results showed that PTh doping was benefit to improve the sensing properties of ZnO.The amount of PTh had an obvious effect on response and selectivity of propylene glycol (PG).When the optimal amount was about 10%,the response value reached 14 which upon exposure to 5 ppm PG,implying that zinc oxide modified with polythiophene was an effective platform to serve as sensor material for detection of propylene glycol.
[1]Meng F L,Ge S,Jia Y,et al.Interlaced nanoflake-assembled flower-like hierarchical ZnO microspheres prepared by bisolvents and their sensing properties to ethanol[J].Journal of Alloys and Compounds,2015,632:645-650.
[2]Wang L L,Dou H M,Liu L M,et al.Controllable and enhanced HCHO sensing performances of different-shelled ZnO hollow microsperes[J].Sensor and Actuator B:Chemical,2013,183:467-473.
[3]Du J P,Yao H L,Zhao R H,et al.Controllable synthesis of prism- and lamella-like ZnO and their gas sensing[J].Materials Letters,2014,136:427-430.
[4]Du J P,Wang H Y,Zhao R H,et al.Surfactant-assisted synthesis of the pencil-like zinc oxide and its sensing properties[J].Materials Letters,2013,107:259-261.
[5]Wang J X,Yang J,Han N,et al.Highly sensitive and selective ethanol and acetone gas sensors based on modified ZnO nanomaterials[J].Materials & Design,2017,121:69-76.
[6]要换丽,王贺艳,谢亚娟,等.石墨烯纳米复合材料的气敏性研究[J].化工新型材料,2014,42(7):223-225.
[7]Barkade S S,Pinjari D V,Nakate U T.Ultrasound assisted synthesis of polythiophene/SnO2 hybrid nanolatex particles for LPG sensing[J].Chemical Engineering and Processing:Process Intensification,2013,74:115-123.
[8]李生英,马明广,魏云霞,等.固相法制备PTh/Ti02复合纳米粉可见光催化剂[J].化学研究与应用,2009,21(12):1627-1631.
[9]Xiao W,Chen J S,Lu Q,et al.Porous spheres assembled from polythiophene (PTh)-coated ultrethin MnO2 nanosheets with enhanced lithium storage capabilities[J].The Journal of Physical Chemistry C,2010,114(27):12048-12051.
[10]庞起,韩建鹏,梁春杰,等.ZnO/纳米棒阵列ZnO/聚噻吩复合电极的制备及光电化学性质[J].功能材料,2010,41(6):997-1000.
[11]Akhtar T,Alam M.Synthesis,characterization and electrical conductivity of zinc oxide nanoparticles embedded in polythiophene nanocomposites[J].Science of Advanced Materials,2014,6(8):1-8.
[12]Ozkazanc H.Novel nanocomposites based on polythiophene and zirconium dioxide[J].Materials Research Bulletin,2016,73:226-232.
[13]Murugavel S,Malathi M.Structural,photoconductivity,and dielectric studies of polythiophene-tin oxide nanocomposites[J].Materials Research Bulletin,2016,81:93-100.
[14]Frackowiak E,Khomenko V,Jurewicz K,et al.Supercapacitors based on conducting polymers/nanotubes composites[J].Journal of Power Sources,2006,153(2):413-418.
[15]杨光,时宇,康萌萌,等.聚噻吩/纳米MnO2复合材料的制备表征及电化学性能[J].复合材料学报,2014,6(3):628-634.
[16]姜玉娇,陈飞,钟国伦.聚噻吩/无机纳米异质结薄膜太阳能电池材料的研究进展[J].化工新型材料,2012,40(9):1-3.
[17]Khatamian M,Fazayeli M,Divband B.Preparation,characterization and photocatalytic properties of polythiophene-sensitized zinc oxide hybrid nanocomposites[J].Materials Science in Semiconductor Processing,2014,26:540-547.
[18]桂阳海,崔瑞立,莫元妙,等.聚噻吩/WO3复合纳米材料的制备及气敏性能[J].电子元件与性能,2010,29(5):32-41.
[19]Zar T,Graeber C,Perazella M.Recognition,treatment,and prevention of propylene glycol toxicity[J].Seminars in Dialysis,2007,20(3):217-219.
[20]王建国,刘爱辰,戴星,等.丙二醇对人体单核细胞和中性粒细胞功能的损害作用[J].中国药学杂志,1989,4(7):399-400.
[21]Kamble D B,Sharma A K,Yadav J B,et al.Facile chemical bath deposition method for interconnected nanofibrous polythiophene thin films and their use for highly efficient room temperature NO2 sensor application[J].Sensors Actuat B,2017,244:522-530.
基金资助
国家自然科学基金(51572185);山西省留学回国人员科技活动择优资助项目(17101114);山西省回国留学人员科研资助项目(2017-044);山西省大学生创新创业训练计划项目(2017550)
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