首页bt365体育在线投注365体育投注在线体育赌博365体育投注串关规则联系方式使用帮助常见问题ENGLISH
bt365体育在线投注
位置:首页 >> 正文
微波水热合成NiGa2O4纳米粉体及其气敏性能
作者:  蒋余芳 储向峰 孙文起 高翠苹   
单位:(安徽工业大学化学与化工学院 安徽 马鞍山243002) 
关键词:镓酸镍 微波水热法 三甲胺 气敏性能 
分类号:O649; O614.37
出版年,卷(期):页码:2019,47(4):0-0
DOI:10.14062/j.issn.0454-5648.2019.04.01
摘要:

采用微波辅助水热法制备了NiGa2O4纳米粉体。用X射线衍射光谱、扫描电子显微镜、透射电子显微镜和X射线光电子能谱等研究了反应温度、时间和沉淀pH对NiGa2O4的相组成以及气敏性能的影响。结果表明:微波水热下,180 ℃反应2 h合成晶型较好的NiGa2O4粉体。在pH为10、180 ℃反应2 h合成的NiGa2O4于室温下对三甲胺有较高的响应和较好选择性。对10×10−6(mL/m3)三甲胺响应值达到3.5,响应时间约为75 s,恢复时间约为45 s;最低检测限为1×10−6,响应值约为1.8。

  NiGa2O4 nano-powder was synthesized by a microwave-assisted hydrothermal method. The effects of reaction temperature, time and pH value on the phase composition and gas sensing properties of NiGa2O4 powder were investigated by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and X-ray photoelectron spectroscopy. The results indicated that NiGa2O4 powder with a good crystal morphology could be synthesized under microwave irradiation at 180 ℃ for 2 h. And the above synthesized NiGa2O4 nano-powder has a higher response and a good selectivity to trimethylamine at room temperature. The sensitivity of NiGa2O4 gas sensor to 10×10−6(volume fraction) trimethylamine is 3.5, the response time is approximately 75 s; the recovery time is approximately 45 s; and the minimum detection limit to 1×10−6 reaches 1.8.

基金项目:
国家自然科学基金(61671019)项目。
作者简介:
参考文献:

 [1] 郭大钧, 奚印慈. 测定鱼类鲜度指标之二——三甲胺[J]. 中国水产, 1983(12): 23–23.

GUO Dajun. XI Yinci. J China Fisheries(in Chinese), 1983(12): 23–23.
[2] MITSUBAYASHI K, KUBOTERA Y, YANO K, et al. Trimethylamine biosensor with flavin-containing monooxygenase type 3 (FMO3) for fish-freshness analysis[J]. Sens Actuators B, 2004, 103(12): 463–467.
[3] PERILLO P M, RODRIGUZE D F. Low temperature trimethylamine flexible gas sensor based on TiO2 membrane nanotubes[J]. J Alloy Compd, 2016, 657: 765–769.
[4] ZHANG G, LI C, CHENG F, et al. ZnFe2O4 tubes: Synthesis and application to gas sensors with high sensitivity and low-energy consumption[J]. Sens Actuators B, 2007, 120(2): 403–410.
[5] PATIL J Y, NADARGI D Y, GURAY J L, et al. Synthesis of glycine combusted NiFe2O4, spinel ferrite: A highly versatile gas sensor[J]. Mater Lett, 2014, 124(6): 144–147.
[6] CHEN H, LI G D, FAN M, et al. Electrospinning preparation of mesoporous spinel gallate (MGa2O4; M=Ni, Cu, Co) nanofibers and their M(II) ions-dependent gas sensing properties[J]. Sens Actuators B, 2017, 240: 689–696.
[7] PARK S, AN S, MUN Y, et al. UV-enhanced room-temperature gas sensing of ZnGa2O4, nanowires functionalized with Au catalyst nanoparticles[J]. Appl Phys Lett, 2014, 114(3): 903–910.
[8] XUE H, LI Z, DING Z, et al. Hollow rods of nanocrystalline NiGa2O4: Hydrothermal synthesis, formation mechanism, and application in photocatalysis[J]. Cryst Growth Des, 2008, 8(12): 4511–4516.
[9] 葛秀涛, 方大儒, 刘杏芹. Ga2O3–NiO复合氧化物的溶胶–凝胶法制备和气敏性能[J]. 物理化学学报, 2005, 21(1): 10–15.
GE Xiutao, FANG Daru, LIU Xiuqing. Acta Phys-Chim Sin (in Chinese), 2005, 21(1): 10–15.
[10] CHU X, WANG J, BAI L, et al. Trimethylamine and ethanol sensing properties of NiGa2O4, nano-materials prepared by co-precipitation method[J]. Sens Actuators B, 2018, 255: 2058–2065.
[11] CHU X, WANG J, BAI L, et al. The gas sensing properties of NiGa2O4 nanofibers prepared by electrospinning method[J]. Mater Sci Eng B, 2018, 228: 45–51.
[12] CHO Y H, KANG Y C, LEE J H. Highly selective and sensitive detection of trimethylamine using WO3 hollow spheres prepared by ultrasonic spray pyrolysis[J]. Sens Actuators B, 2013, 176(6): 971–977.
服务与反馈:
文章下载】【加入收藏
bt365体育在线投注_365体育投注在线体育赌博_365体育投注串关规则《硅酸盐学报》编辑室
京ICP备10016537号-2
京公网安备 11010802024188号
地址:北京市海淀区三里河路11号    邮政编码:100831
电话:010-57811253  57811254    
E-mail:jccs@ceramsoc.com