Abstract: ZnO/PTh composites were synthesized by two-step method including the synthesis of oxygen vacancy-controlled ZnO and the in-situ chemical oxidative polymerization of thiophene.The materials were studied by X-ray power diffraction,field emission scanning electron microscopy,high-resolution transmission electron microscopy,fourier transform Infrared spectrometer,UV-Vis diffuse reflectance and photoluminescence.The UV light enhanced gas-sensing properties of the as-prepared composites were investigated,and the gas sensing mechanism of composites was also proposed.The results shown that the gas sensor based on ZnO/PTh showed high sensitivity towards ethanol under the irradiation of UV light at room temperature.The sensitivity to 100×10-6 ethanol can reach 12.6 at the room temperature,the response and recovery time were both within 40 s.
田俊峰, 尹志刚, 韩光鲁, 杜俊平, 李臻. ZnO/聚噻吩复合材料制备及紫外光激发室温气敏性能[J]. 化工新型材料, 2019, 47(11): 115-119.
Tian Junfeng, Yin Zhigang, Han Guanglu, Du Junping, Li Zhen. Preparation of ZnO/PTh and gas sensing property under UV light illumination at room temperature. New Chemical Materials, 2019, 47(11): 115-119.
[1] 桂阳海,张宏忠,刘贝贝,等.水热法制备V2O5掺杂纳米In2O3及其气敏性能研究[J].化工新型材料,2016,44(8):102-104. [2] Espinosa E H,Ionescu R,Chambon B,et al.Hybrid metal oxide and multiwall carbon nanotube films for low temperature gas sensing[J].Sensors and Actuators B:Chemical,2007,127(1):137-142. [3] 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. [4] 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. [5] Zhang J,Wang S R,Xu M J,et al.Polypyrrole-coated SnO2 hollow spheres and their application for ammonia sensor[J].Journal of Physical Chemistry C,2009,113(5):1662-1665. [6] 李博,刘顺强,刘磊,等.杨桃状ZnO纳米片微球的制备及气敏性能的研究[J].无机化学学报,2010,26(4):591-595. [7] Chen H,Liu Y,Xie C S,et al.A comparative study on UV light activated porous TiO2 and ZnO film sensors for gas sensing at room temperature[J].Ceramics International,2012,38(1):503-509. [8] Gong J,Li Y H,Chai X S,et al.UV-light-activated ZnO fibers for organic gas sensing at room temperature[J].Journal of Physical Chemistry C,2010,114(2):1293-1298. [9] Peng L,Zhao Q D,Wang D J,et al.Ultraviolet-assisted gas sensing:a potential formaldehyde detection approach at room temperature based on zinc oxide nanorods[J].Sensors and Actuators B:Chemical,2009,136(1):80-85. [10] Qin J L,Li R,Lu C Y,et al.Ag/ZnO/graphene oxide heterostructure for the removal of rhodamine B by the synergistic adsorption-degradation effects[J].Ceramics International,2015,41(3):4231-4237. [11] Cui J B,Jiang J J,Shi L Q,et al.The role of Ni doping on photoelectric gas-sensing properties of ZnO nanofibers to HCHO at room temperature[J].RSC Advances,2016,6(82):78257-78263. [12] Zhang H,Zong R L,Zhao J C,et al.Dramatic visible photocatalytic degradation performance due to synergetic effect of TiO2 with PANI[J].Environmental Science Technology,2008,42(10):3803-3807. [13] Wang J P,Wang Z Y,Huang B B,et al.Oxygen vacancy induced band gap narrowing and enhanced visible light photocatalytic activity of ZnO[J].ACS Applied Materials and Interfaces,2012,4(8):4024-4030. [14] Uekawa N,Mochizuki N,Kajiwara J,et al.Nonstoichiometric properties of zinc oxide nanoparticles prepared by decomposition of zinc peroxide[J].Physical Chemistry Chemical Physics,2003,5(5):929-934. [15] Ahn M W,Park K S,Heo J H,et al.Gas sensing properties of defect controlled ZnO nanowire gas sensor[J].Applied Physics Letters,2008,93(26):263103. [16] Peng X M,Zhang L,Chen Y W,et al.In situ preparation and fluorescence quenching properties of Polythiophene/ZnO nanocrystals hybrids through atom-transfer radical polymerization and hydrolysis[J].Applied Surface Science,2010,256(9):2948-2955.
2019, Vol. 47 
