以硝酸铁、硝酸镍和硝酸锰作为反应物,柠檬酸作为凝胶剂,采用溶胶-凝胶自蔓延燃烧工艺合成Ni1-xMnxFe2O4纳米粉体,并采用XRD、SEM和气敏性测试等分析方法对其物相组成、显微形貌和气敏性作了系统研究.结果表明:干凝胶在250 ℃自燃所得的粉体即为单相NiFe2O4尖晶石相.为消除残余碳,采用微波热处理15 min就能得到和在600 ℃下热处理1 h相同的相结构.但采用微波处理的样品颗粒形貌为块状,采用烧结炉处理的样品颗粒形貌类似菜花状.气敏性能测试结果表明:添加Mn2+有利于Ni1-xMnxFe2O4气敏性的提高,但微波处理不能有效改善材料的气敏性.
参考文献
| [1] | Gopal C V;Manorama S V;Rao V J .Semiconducting Gas Sensor for Chlorine Based on Inverse Spinel Nickel Ferrite[J].Sensors and Actuators B:Chemical,1999,55(01):90-95. |
| [2] | Satyanarayana L.;Reddy KM.;Manorama SV. .Nanosized spinel NiFe2O4: A novel material for the detection of liquefied petroleum gas in air[J].Materials Chemistry and Physics,2003(1):21-26. |
| [3] | Liufang Yang;Yongan Xie;Heyun Zhao;Xinghui Wu;Yude Wang .Preparation and gas-sensing properties of NiFe_2O_4 semiconductor materials[J].Solid-State Electronics,2005(6):1029-1033. |
| [4] | 葛秀涛.银掺杂对CdFe2 O4电导和气敏性能的影响[J].化学物理学报,2001(04):485-490. |
| [5] | Liu YL;Wang H;Yang Y;Liu ZM;Yang HF;Shen GL;Yu RQ .Hydrogen sulfide sensing properties of NiFe2O4 nanopowder doped with noble metals[J].Sensors and Actuators, B. Chemical,2004(1):148-154. |
| [6] | 张磊,焦万丽.微波辅助合成镍铁尖晶石纳米片晶[J].硅酸盐学报,2008(11):1505-1508. |
| [7] | Chu X F;Zheng C M .Sulfide-sensing Characteristics of MFe2O4 (M=Zn,Cd,Mn and Cu) Thick Film Prepared by Co-precipitation Method[J].Sensors and Actuators B:Chemical,2003,96(05):504-508. |
| [8] | Mathew George;Asha Mary John;Swapna S. Nair .Finite size effects on the structural and magnetic properties of sol-gel synthesized NiFe_2O_4 powders[J].Journal of Magnetism and Magnetic Materials,2006(1):190-195. |
| [9] | L. John Berchmans;R. Kalai Selvan;P.N. Selva Kumar .Structural and electrical properties of Ni_(1-x)Mg_xFe_2O_4 synthesized by citrate gel process[J].Journal of Magnetism and Magnetic Materials,2004(1):103-110. |
| [10] | 程花蕾,崔斌,成海鸥,张昊,畅柱国,史启祯.溶胶-自蔓延燃烧法制备纳米材料的研究进展[J].电子器件,2007(06):2015-2017,2022. |
| [11] | 黄文艳,杜丕一,翁文剑,韩高荣.溶胶直接自蔓燃法制备NiZn铁氧体粉末研究[J].材料科学与工程学报,2005(05):528-532. |
| [12] | Sankaranarayanan V K;Sreekumar C .Precrusor Synthesis and Microwave Processing of Nickel Ferrite Nanoparticles[J].Current Applied Physics,2003,3:205-208. |
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