Controllable synthesis of silver nanoparticle-decorated reduced graphene oxide hybrids for ammonia detection

被引：119
|
作者：
Cui, Shumao [1 ]
Mao, Shun [1 ]
Wen, Zhenhai [1 ]
Chang, Jingbo [1 ]
Zhang, Yang [1 ]
Chen, Junhong [1 ]
机构：
[1] Univ Wisconsin, Dept Mech Engn, Milwaukee, WI 53211 USA
来源：
ANALYST | 2013年 / 138卷 / 10期
基金：
美国国家科学基金会;
关键词：
CARBON NANOTUBES; TIN OXIDE; CHEMICAL SENSORS; NANOCRYSTALS; NANOSHEETS; SINGLE; LAYER;
D O I：
10.1039/c3an36922f
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
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.
引用
收藏
页码：2877 / 2882
页数：6
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