Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.
Sensitive detection of H2S using gold nanoparticle decorated single-walled carbon nanotubes.
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DOI：
10.1021/ac901871d
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发表时间：
2010-01-01
影响因子：
7.4
通讯作者：
Deshusses, Marc A.
中科院分区：
文献类型：
--
作者：
Mubeen, Syed;Zhang, Ting;Chartuprayoon, Nicha;Rheem, Youngwoo;Mulchandani, Ashok;Myung, Nosang V.;Deshusses, Marc A.
在这里，我们证明了高灵敏度的电导H2S气体纳米传感器可以通过在单壁碳纳米管（SWNTs）网络上电沉积金纳米粒子来合成。调整电沉积条件允许调整沉积的金纳米颗粒的尺寸和数量。最好的H2S传感性能，而不是连续的纳米线获得离散的金纳米沉积物。气体纳米传感器可以在室温下检测空气中的H2S，检测限为3 ppb。传感器是可逆的，增加偏置电压减少了传感器的恢复时间，可能是通过局部焦耳加热。传感机制被认为是基于跨纳米管的传导路径的调制，该传导路径源自于当暴露于H2S时金和碳纳米管缺陷位点之间的电子交换的调制。
Herein we demonstrate that highly sensitive conductometric gas nanosensors for H2S can be synthesized by electrodepositing gold nanoparticles on single-walled carbon nanotubes (SWNTs) networks. Adjusting the electrodeposition conditions allowed for tuning of the size and number of gold nanoparticles deposited. The best H2S sensing performance was obtained with discrete gold nanodeposits rather than continuous nanowires. The gas nanosensors could sense H2S in air at room temperature with a 3 ppb limit of detection. The sensors were reversible and increasing the bias voltage reduced the sensor recovery time, probably by local Joule heating. The sensing mechanism is believed to be based on the modulation of the conduction path across the nanotubes emanating from the modulation of electron exchange between the gold and carbon nanotubes defect sites when exposed to H2S.
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影响因子：
3.7
作者：
Mubeen, Syed;Zhang, Ting;Myung, Nosang V.
通讯作者：
Myung, Nosang V.
影响因子：
4.3
作者：
Redondo, Rosa;Cunha Machado, Vinicius;Gabriel, David
通讯作者：
Gabriel, David
影响因子：
8.4
作者：
SBERVEGLIERI, G;GROPPELLI, S;CAMANZI, A
通讯作者：
CAMANZI, A
影响因子：
--
作者：
SCHONENBERGER, C;JORRITSMA, J;FOKKINK, LGJ
通讯作者：
FOKKINK, LGJ
影响因子：
4.5
作者：
BERGMAN, I
通讯作者：
BERGMAN, I