High-performance reduced graphene oxide-based room-temperature NO₂ sensors: A combined surface modification of SnO₂ nanoparticles and nitrogen doping approach

详细信息    查看全文

• 作者：Ziying Wang^a ; ^bAuthor Vitae ; Chen Zhao^aAuthor Vitae ; Tianyi Han^aAuthor Vitae ; Yong Zhang^aAuthor Vitae ; Sen Liu^a ; ^{liusen@jlu.edu.cn}Author Vitae ; Teng Fei^aAuthor Vitae ; Geyu Lu^aAuthor Vitae ; Tong Zhang^a ; ^b ; ^{zhangtong@jlu.edu.cn}Author Vitae
• 关键词：Nitrogen-doped reduced graphene oxide ; Tin dioxide nanoparticle ; Nitrogen dioxide ; Room temperature
• 刊名：Sensors and Actuators B: Chemical
• 出版年：2017
• 出版时间：April 2017
• 年：2017
• 卷：242
• 期：Complete
• 页码：269-279
• 全文大小：3331 K
• 卷排序：242

文摘

We have demonstrated a combined surface modification and heteroatom doping approach to enhance the sensing performances of RGO-based room-temperature NO2 sensors, where SnO2 nanoparticles modified nitrogen-doped RGO (SnO2/N-RGO) hybrids had been used as sensing materials. The sensor based on SnO2/N-RGO hybrids exhibits better sensing performances toward NO2 operated at room temperature than those of pure RGO and SnO2/RGO hybrids. The SnO2/N-RGO hybrids show response of 1.38–5 ppm NO2 with the response time and recovery time of 45 s and 168 s. The excellent sensing performances are attributed to incorporation of N atoms into RGO and the modification of RGO with SnO2 NPs.