采用水热法成功制备了Fe掺杂NiO纳米花状微球,研究了Fe掺杂量对微球结构、形貌和气敏性能的影响。气敏实验结果表明:Fe掺杂NiO纳米微球基气敏元件对丙酮的气敏性能较纯相NiO显著提高;当Fe掺杂量为0.03g时,气敏器件在工作温度为280℃,丙酮质量浓度为3.7×10-4mg/L条件下,气体灵敏度为41.8,是相同条件下未掺杂NiO基气敏元件的12倍,该气敏元件在检测低浓度丙酮气体时也表现出优异的性能。
Fe-doped flower-like NiO nanospheres were successfully synthesized by hydrothermal method.The effects of various Fe-doping amount on the structure,morphology and gas sensing properties of the products were investigated.Compared with pure NiO,the gas-sensing properties of Fe-doping NiO composite-based sensor had obviously improved toward acetone.Especially,when the doping weight of FeCl3 was 0.03g,the response was 41.8,which was 12 times bigger than the sensitivity of gas sensor based on undoped NiO-based sensor under the working temperature was 280℃ and acetone concentration was 3.7×10-4mg/L.The sample-based sensor showed excellent property to detection of low-concentration acetone.
[1] Li X,Tan J F,Hu Y,et al.Microwave-assisted synthesis of Fe-doped NiO nanofoams assembled by porous nanosheets for fast response and recovery gas sensors[J].Materials Research Express,2017,4(4):45015.
[2] Gawali S R,Patil V L,Deonikar V G,et al.Ce doped NiO nanoparticles as selective NO2 gas sensor[J].Journal of Physics & Chemistry of Solids,2017,114:28-35.
[3] Han D,Xu P,Jing X,et al.Facile approach to prepare hollow core-shell NiO microspherers for supercapacitor electrodes[J].Journal of Solid State Chemistry,2013,203:60-67.
[4] 张敏,李晓丹,毛永强,等.Ce掺杂NiO纳米材料的制备及其气敏性能研究[J].化工新型材料,2018,46(1):233-236.
[5] Kumar R,Baratto C,Faglia G,et al.Tailoring the textured surface of porous nanostructured NiO thin films for the detection of pollutant gases[J].Thin Solid Films,2015,583:233-238.
[6] Lin L Y,Liu T M,Miao B,et al.Hydrothermal fabrication of uniform hexagonal NiO nanosheets:structure growth and response[J].Materials Letters,2013,102:43-46.
[7] Jiang S J,Handberg E S,Liu F,et al.Effect of doping the nitrogen into carbon nanotubes on the activity of NiO catalysts for the oxidation removal of toluene[J].Applied Catalysis B:Environmental,2014,160-161(1):716-721.
[8] 胥佳斌,陶庭先,褚伟.纳米钨酸铋/偕胺肟纤维的制备及其光催化性能研究[J].化工新型材料,2016,44(2):61-63.
[9] 袁博,张宝,王志亮,等.钨酸铋担载钯纳米粒子光催化甲苯及其衍生物到醛的氧化反应(英文)[J].催化学报,2017,38(3):440-446.
[10] Liu Xinhua,Li Hongzhang,Liu Zhi,et al.Visible-light-driven photocatalytic properties of electrospun bismuth tungstate/PAN composite nanofiber membrane[J].Journal of Polymer Material,2018,35(3):295-304.
[11] Gui M S,Wang P F,Yuan J G,et al.Preparation and visible light photocatalytic activity of Bi2WO6 hollow microspheres[J].Advanced Materials Research,2014,864:1323-1326.
[12] Liu Y,Tang H,Lv H,et al.Self-assembled three-dimensional hierarchical Bi2WO6 microspheres by sol-gel-hydrothermal route[J].Ceramics International,2014,40(4):6203-6209.
[13] Huang J,Tan G,Xia A,et al.Growth mechanism and photocatalytic properties of flower-like Bi2WO6 powders synthesized by a microwave hydrothermal method[J].Research on Chemical Intermediates,2014,40(2):903-911.
[14] Fong H,Chun I,Reneker D H.Beaded nanofibers formed during electrospinning[J].Polymer,1999,40:4585-4592.
[15] 沈翔,于运花,李鹏,等.聚丙烯腈/二氧化钛杂化纳米活性碳纤维制备与结构变化规律[J].化工进展,2007,26(7):974-979.
基金资助
国家自然科学基金(51272165,51672138);四川理工学院科研基金(2014PY11)
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