Effect of Cation Substitution on the Gas-Sensing Performances of Ternary Spinel MCo2O4 (M = Mn, Ni, and Zn) Multishelled Hollow Twin Spheres
Effect of Cation Substitution on the Gas-Sensing Performances of Ternary Spinel MCo2O4 (M = Mn, Ni, and Zn) Multishelled Hollow Twin Spheres
复制标题
阳离子取代对三元尖晶石MCo2O4（M=Mn、Ni、Zn）多壳空心双球气敏性能的影响
DOI：
10.1021/acsami.9b07546
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发表时间：
2019
影响因子：
9.5
通讯作者：
Zhang Tong
中科院分区：
文献类型：
--
作者：
Zhou Tingting;Cao Shuang;Zhang Rui;Tu Jinchun;Fei Teng;Zhang Tong
先进的传感材料对用于气体传感器的气体分子的灵敏、实时和连续检测的要求很高，气体传感器已成为环境监测和疾病诊断的有效工具。含钴尖晶石型氧化物由于其丰富的元素和显著的活性，是一种很有前途的气敏材料。通过用其他过渡金属取代Co，可以调节结构和组分性质以优化传感性能。本文对尖晶石型MCo_2O_4氧化物（M = Mn、Ni和Zn）的气敏性能进行了系统的研究。结果表明，ZnCo2O4材料具有多壳空心双球结构，在不同温度下对甲醛和丙酮具有良好的传感性能。在晶格中用Zn取代Co提高了氧的化学吸附能力，这为合成和设计高灵敏度的化学传感器提供了新的机会。
Advanced sensing materials are in high demand for sensitive, real-time, and continuous detection of gas molecules for gas sensors, which have been becoming an effective tool for environmental monitoring and disease diagnosis. Cobalt-containing spinel oxides are promising sensing materials for the gas-sensing reaction owing to their element abundance and remarkable activity. Structural and component properties can be modulated to optimize the sensing performances by substituting Co with other transition metals. Herein, a systematic study of spinel MCo2O4oxides (M = Mn, Ni, and Zn) toward gas sensing is presented. Results show that ZnCo2O4materials with a multishelled hollow twin-sphere structure obtained excellent sensing performances to formaldehyde and acetone at different temperatures. The replacement of Co with Zn in the lattice improves the oxygen-chemisorbing ability, which allows new opportunities to synthesize and design highly sensitive chemical sensors.