Stably dispersed carbon nanotubes covalently bonded to phthalocyanine cobalt(II) for ppb-level H2S sensing at room temperature
文献类型：期刊论文
| 作者 | Wu, Hao; Chen, Zhimin; Zhang, Jialin; Wu, Feng; He, Chunying; Wang, Bin; Wu, Yiqun; Ren, Zhiyu |
| 刊名 | J. Mater. Chem. A
 |
| 出版日期 | 2016 |
| 卷号 | 4期号:3页码:1096 |
| 通讯作者 | zmchen@siom.ac.cn ; zyren@hlju.edu.cn |
| 英文摘要 | Cost-efficient, highly sensitive and stable sensing materials play a key role in developing H2S sensors. Herein, tetra-beta-carboxyphenyloxyphthalocyanine cobalt(II) (cPcCo) has been successfully bonded on the surface of acidified multiwalled carbon nanotubes (aCNTs) by a facile two-step condensation reaction in the presence of N,N'-dicyclohexylcarbodiimide (DCC), using hydroquinone (HQ), p-aminophenol (PAP), and p-phenylenediamine (PPD) as linking molecules, respectively. The obtained cPcCo-B-aCNT (B= HQ, PAP, and PPD) hybrids display good dispersibility in ethanol, which is beneficial to construct uniform sensing devices. The cPcCo-B-aCNT sensors, with a loose network-like structure, present abundant exposed sensing sites, oriented transmission of charges, and unimpeded pathways for H2S diffusion, which endow the cPcCo-B-aCNT hybrids with excellent sensing performance, in terms of sensitivity, reliability, reproducibility, and detection limit. The detection limit of the sensors composed of cPcCo-BaCNT hybrids towards H2S reaches the ppb-level at room temperature, which is about the same as the odor threshold level for humans. For the cPcCo-HQ-aCNT sensor, the response to H2S varies linearly with respect to its concentration from 20 to 160 ppb and from 320 to 2560 ppb, with the highest gas response of 2.5% to 80 ppb H2S and a low detection limit of 5 ppb. Furthermore, the linking molecules play a critical role in the sensitivity of H2S, as evidenced from the current-voltage characteristics. The systematic study developed here provides a valid way to fabricate other high-efficient H2S sensors. |
| 资助信息 | National Natural Science Foundation of China [51002046, 51102082, 51202061, 21573062]; Natural Science Foundation for the Returned Overseas Scholars of Heilongjiang Province [LC2012C02]; Natural Science Foundation of Heilongjiang Province of China [B20130 |
| 收录类别 | SCI |
| WOS记录号 | WOS:000367625000045 |
| 源URL | [http://ir.siom.ac.cn/handle/181231/28256]  |
| 专题 | 上海光学精密机械研究所_高密度光存储技术实验室 |
| 作者单位 | 中国科学院上海光学精密机械研究所 |
| 推荐引用方式 GB/T 7714 | Wu, Hao,Chen, Zhimin,Zhang, Jialin,et al. Stably dispersed carbon nanotubes covalently bonded to phthalocyanine cobalt(II) for ppb-level H2S sensing at room temperature[J]. J. Mater. Chem. A,2016,4(3):1096. |
| APA | Wu, Hao.,Chen, Zhimin.,Zhang, Jialin.,Wu, Feng.,He, Chunying.,...&Ren, Zhiyu.(2016).Stably dispersed carbon nanotubes covalently bonded to phthalocyanine cobalt(II) for ppb-level H2S sensing at room temperature.J. Mater. Chem. A,4(3),1096. |
| MLA | Wu, Hao,et al."Stably dispersed carbon nanotubes covalently bonded to phthalocyanine cobalt(II) for ppb-level H2S sensing at room temperature".J. Mater. Chem. A 4.3(2016):1096. |
入库方式： OAI收割
来源：上海光学精密机械研究所
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