Al掺杂ZnO纳米片的制备及其酒精气敏性能的研究
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摘要
为了制备高灵敏度、快速响应的酒精气敏传感器材料,采用水热法制备了Al掺杂Zn O纳米片,研究了不同浓度Al掺杂对Zn O纳米片粉体的形貌、晶体结构及酒精气敏性能的影响。结果表明:Al掺杂对其结构及形貌未产生影响,Al掺杂明显提高了Zn O纳米片粉体对酒精气体的敏感性能,在Al掺杂量为摩尔分数5%的Zn O纳米片粉体对酒精气体具有最佳的气敏特性,工作温度为275℃时,粉体对体积分数为400×10~(-6)酒精气体的灵敏度达71.03,在(50~2000)×10~(-6)的酒精气体浓度范围内,随着酒精气体浓度增大,Al掺杂Zn O纳米粉体的灵敏度呈上升趋势。这主要是由于Al元素掺杂使Zn O的空位增多,从而为气敏反应提供更多的活化点,提高了气敏性能。
To prepare materials for alcohol gas sensor with higher sensitivity and quicker response,ZnO and Al doped ZnO nanoplatelets were prepared by hydrothermal method.Effects of Al doping on the C_2H_5OH sensing properties of ZnO nanoplatelets were investigated.The results show that Al doping has no inuence on thestructure and surface morphology of ZnO nanoplatelets.The C_2H_5OH sensing properties of ZnO nanoplatelets are effectively improved by Al doping and the optimal doping concentration is 5%(mole fraction).The sensitivity is 71.03 for the sensors based on 5%Al doped ZnO nanoplatelets to 400×10~(-6)(volume fraction)HCHO at 275℃.The sensitivity of the gas sensor gradually increases with the C_2H_5OH concentration in the range of 50×10~(-6)-2000×10~(-6)(volume fraction).Defects in ZnO nanoplatelets is caused by Al doping,which provides more gas-sensitive reaction activation point and improves the gas-sensitive properties.
To prepare materials for alcohol gas sensor with higher sensitivity and quicker response,ZnO and Al doped ZnO nanoplatelets were prepared by hydrothermal method.Effects of Al doping on the C_2H_5OH sensing properties of ZnO nanoplatelets were investigated.The results show that Al doping has no inuence on thestructure and surface morphology of ZnO nanoplatelets.The C_2H_5OH sensing properties of ZnO nanoplatelets are effectively improved by Al doping and the optimal doping concentration is 5%(mole fraction).The sensitivity is 71.03 for the sensors based on 5%Al doped ZnO nanoplatelets to 400×10~(-6)(volume fraction)HCHO at 275℃.The sensitivity of the gas sensor gradually increases with the C_2H_5OH concentration in the range of 50×10~(-6)-2000×10~(-6)(volume fraction).Defects in ZnO nanoplatelets is caused by Al doping,which provides more gas-sensitive reaction activation point and improves the gas-sensitive properties.
引文
[1]孙社稷,樊慧庆.三维花状氧化锌纳米结构的水热合成与气敏特性[J].电子元件与材料,2017,36(5):62-66.
[2]孙立,甘娜,方文诚,等. Cu O纳米空心球的制备及其NOx气敏研究[J].电子元件与材料,2017,36(5):58-61.
[3]刘宏,张晓武,谷云峰. SnO2-ZnO的乙醇气敏特性研究[J].电子元件与材料,2012,31(5):21-22.
[4]张彩宁,代文祎,王煦漫.氧化锌/聚苯乙烯纳米复合材料的制备与性能[J].化工新型材料,2017(6):98-100.
[5]陈婷,徐彦乔,江莞,等.表面活性剂调制合成纺锤结构氧化锌及其发光性能研究[J].陶瓷学报,2015,36(6):610-616.
[6]崔航,赵帆,张世林.纳米ZnO粉体形貌控制及光致发光特性研究[J].中国陶瓷,2016(3):39-43.
[7]魏少红,王绍梅.静电纺丝技术制备Au-ZnO纳米纤维及其气敏性能研究[J].电子元件与材料,2014,33(6):23-27.
[8]黎小平,曹培江,宿世臣,等. ZnO薄膜近带边紫外发光的研究[J].发光学报,2012,33(5):481-485.
[9]杨颖,刘文燚,张承鑫,等. NiO纳米棒的制备及其室温下NOx气敏性研究[J].电子元件与材料,2017,36(11):33-37.
[10] RENARD L, BABOT O, SAADAOUI H, et al.Nanoscaled tindioxide films processed from organotin-based hybrid materials:an organometallic route toward metal oxide gas sensors[J]. Nanoscale,2012,4:6806-6813.
[11] ZHAO M, LI Z, HAN Z, et al. Synthesis of mesoporous multiw all ZnO nanotubes by replicating silk and application for enzymatic biosensor[J]. Biosens Bioelectron,2013,49:318-322.
[12] XIE J,WANG H,LIN Y,et al. Highly sensitive humidity sensor based on quartz crystal microbalance coated w ith ZnO colloid spheres[J]. Sens Actuators B Chem,2013,177:1083-1088.
[13] ZHAO M,WANG X,NING L,et al. Electrospun Cu-doped ZnO nanofibers for H2S sensing[J]. Sens Actuators B Chem,2011,156(2):588-592.
[2]孙立,甘娜,方文诚,等. Cu O纳米空心球的制备及其NOx气敏研究[J].电子元件与材料,2017,36(5):58-61.
[3]刘宏,张晓武,谷云峰. SnO2-ZnO的乙醇气敏特性研究[J].电子元件与材料,2012,31(5):21-22.
[4]张彩宁,代文祎,王煦漫.氧化锌/聚苯乙烯纳米复合材料的制备与性能[J].化工新型材料,2017(6):98-100.
[5]陈婷,徐彦乔,江莞,等.表面活性剂调制合成纺锤结构氧化锌及其发光性能研究[J].陶瓷学报,2015,36(6):610-616.
[6]崔航,赵帆,张世林.纳米ZnO粉体形貌控制及光致发光特性研究[J].中国陶瓷,2016(3):39-43.
[7]魏少红,王绍梅.静电纺丝技术制备Au-ZnO纳米纤维及其气敏性能研究[J].电子元件与材料,2014,33(6):23-27.
[8]黎小平,曹培江,宿世臣,等. ZnO薄膜近带边紫外发光的研究[J].发光学报,2012,33(5):481-485.
[9]杨颖,刘文燚,张承鑫,等. NiO纳米棒的制备及其室温下NOx气敏性研究[J].电子元件与材料,2017,36(11):33-37.
[10] RENARD L, BABOT O, SAADAOUI H, et al.Nanoscaled tindioxide films processed from organotin-based hybrid materials:an organometallic route toward metal oxide gas sensors[J]. Nanoscale,2012,4:6806-6813.
[11] ZHAO M, LI Z, HAN Z, et al. Synthesis of mesoporous multiw all ZnO nanotubes by replicating silk and application for enzymatic biosensor[J]. Biosens Bioelectron,2013,49:318-322.
[12] XIE J,WANG H,LIN Y,et al. Highly sensitive humidity sensor based on quartz crystal microbalance coated w ith ZnO colloid spheres[J]. Sens Actuators B Chem,2013,177:1083-1088.
[13] ZHAO M,WANG X,NING L,et al. Electrospun Cu-doped ZnO nanofibers for H2S sensing[J]. Sens Actuators B Chem,2011,156(2):588-592.