石墨烯气体传感解吸附特性研究

摘要

分析探讨了石墨烯气体解吸附特性与解吸附方法。通过实验分析石墨烯对NO2气体分子的响应时间、气体分子解吸附时间，分析探讨石墨烯的气敏特性。实验表明，石墨烯对NO2气体传感灵敏度高，响应快，但恢复过程缓慢，气体解吸附时间长。分析表明，通过加热的方法、光照的方法可有效减少石墨烯气体解吸附时间，改善解吸附特性。%Properties of the gas sensing and the method of the desorption about graphene have been discussed. By analyzing the response and desorption time of the NO2 molecule on graphene,we discussed the gas sensing proper⁃ties of graphene. In the experiments,the graphene has fast and high response to NO2 gas,while the recovery prog⁃ress is quite slow,that is to say the desorption time is very long. The analysis states that by heating and illumina⁃tion, the desorption time could be decreased effectively,and the adsorption property would be improved.