Co3O4–SnO2 nanobox sensor with a PN junction and semiconductor–conductor transformation for high selectivity and sensitivity detection of H2S,CrystEngComm

当前位置： X-MOL 学术 › CrystEngComm › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Co3O4–SnO2 nanobox sensor with a PN junction and semiconductor–conductor transformation for high selectivity and sensitivity detection of H2S
CrystEngComm ( IF 2.6 ) Pub Date : 2017-08-25 00:00:00 , DOI: 10.1039/c7ce01240c
Pengjie Jiang _{1,

2,

3,

4,

5} , Haonan Zhang _{1,

2,

3,

4,

5} , Changmiao Chen _{1,

2,

3,

4,

5} , Jiaojiao Liang _{1,

2,

3,

4,

5} , Yazi Luo _{1,

2,

3,

4,

5} , Ming Zhang _{1,

2,

3,

4,

5} , Mengqiu Cai _{1,

2,

3,

4,

5}

Affiliation

Uniform Co₃O₄–SnO₂ nanoboxes have been synthesized successfully by a facile annealing treatment. Their hollow and cubic structure can be retained successfully during calcination. Due to their hollow structure and PN junction, these Co₃O₄–SnO₂ nanobox sensors can detect H₂S with high sensitivity at a low temperature of 180 °C. In addition, it was found that the Co₃O₄–SnO₂ nanobox sensors obtained at a higher annealing temperature displayed a higher sensitivity and lower recovery time to H₂S in a temperature range of 500 to 700 °C. X-ray photoelectron spectroscopy (XPS) was employed to confirm that the changes in resistance and the high sensitivities of the sensors are significantly attributable to the transformation of Co₃O₄ to CoS_x with high conductivity under an H₂S atmosphere.

中文翻译：

具有PN结和半导体-导体转换的Co ₃ O ₄ –SnO ₂纳米盒传感器，用于H ₂ S的高选择性和灵敏度检测

通过简便的退火处理成功地合成了均匀的Co ₃ O ₄ –SnO ₂纳米盒。它们的中空和立方结构可以在煅烧过程中成功保留。由于它们的中空结构和PN结，这些共₃ ö ₄ -SnO ₂ nanobox传感器可以检测ħ ₂在180℃的低温S采用高灵敏度。另外，发现在较高的退火温度下获得的Co ₃ O ₄ –SnO ₂纳米盒传感器显示出较高的灵敏度和较短的对H _2的恢复时间。S在500至700°C的温度范围内。X射线光电子能谱（XPS）用于确认传感器的电阻变化和高灵敏度可归因于H ₂ S气氛下Co ₃ O ₄向高电导率CoS _x的转变。

更新日期：2017-09-15

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11