论文标题
CO3O4空心球在室温下通过CO3O4空心球传感
Formaldehyde sensing by Co3O4 hollow spheres at room temperature
论文作者
论文摘要
甲醛是一种普遍存在的高毒性气体。由于它们的毒性和扩散，这是有效检测的重要任务。在这项工作中，我们研究了基于空心CO3O4纳米结构的痕量甲醛的检测。发现具有不同结构的CO3O4空心球在室温下显示出对甲醛的独特感应性能，纳米片改性的CO3O4对100 ppm甲醛的响应值将在18秒内达到35，而纳米粒子修改的CO3O4空心球将在18秒内达到2.1，在300秒内达到2.1。在室温下，纳米片修饰和纳米颗粒修饰的CO3O4空心球将以10秒的速度达到4和20。作为室温，传感器不对NH3，CO等反应。基于理论和实验结果提出了传感机制。 CO3O4传感器显示CH2O在室温下快速感测的潜在效用。
Formaldehyde is a ubiquitous and high toxicity gas. It is an essential task to efficient detect owing to their toxicity and diffusion. In this work, we studied on the detection of trace amount of formaldehyde based on hollow Co3O4 nanostructure. It is found that Co3O4 hollow spheres with different structures shows distinct sensing performance towards formaldehyde at room temperature, the response value of nanosheet modified Co3O4 towards 100 ppm formaldehyde will reach 35 in 18 second, and the nanoparticle modified Co3O4 hollow sphere will reach 2.1 in 18 second, 17 in 300 second. The nanosheet modified and nanoparticle modified Co3O4 hollow sphere will reach 4 and 20 in 10 second towards 100 ppm formaldehyde at room temperature. As room temperature, the sensors do not response towards NH3, CO, etc. The sensing mechanism was proposed based on the theoretical and experimental results. The Co3O4 sensor shows that potential utility in CH2O quick sensing at room temperature.
