Controllable synthesis of silver nanoparticle-decorated reduced graphene oxide hybrids for ammonia detection
Controllable synthesis of silver nanoparticle-decorated reduced graphene oxide hybrids for ammonia detection
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DOI：
10.1039/c3an36922f
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发表时间：
2013-01-01
期刊：
影响因子：
4.2
通讯作者：
Chen, Junhong
中科院分区：
文献类型：
--
作者：
Cui, Shumao;Mao, Shun;Chen, Junhong
我们展示了可控的银纳米粒子（NP）修饰的还原氧化石墨烯（RGO/Ag）的混合物的制造和它们的应用，在室温下快速和选择性检测氨。银纳米粒子大大提高了RGO的灵敏度。的响应时间（6秒）和恢复时间（10秒）与我们以前的银NP修饰的多壁碳纳米管（MWCNT/Ag）NH3传感器相媲美;然而，灵敏度约为MWCNT/Ag混合物的两倍。我们发现纳米粒子的负载密度极大地影响了RGO/Ag杂化材料的传感性能，并且适当的纳米粒子负载导致最大的灵敏度。
We demonstrate controllable fabrication of Ag nanoparticle (NP)-decorated reduced graphene oxide (RGO/Ag) hybrids and their application for fast and selective detection of ammonia at room temperature. Ag NPs greatly improved the sensitivity of RGO. The response time (6 s) and recovery time (10 s) are comparable with our previous Ag NP-decorated multiwalled carbon nanotube (MWCNT/Ag) NH3 sensors; however, the sensitivity is about twice that of MWCNT/Ag hybrids. We found that the loading density of NPs greatly affects the sensing performance of RGO/Ag hybrids and a proper NP loading leads to maximum sensitivity.