Reduced Graphene Oxide-Coated Si Nanowires for Highly Sensitive and Selective Detection of Indoor Formaldehyde
文献类型：期刊论文
| 作者 | Song, LF; Luo, LQ; Xi, Y; Song, JJ; Wang, Y; Yang, LP; Wang, AQ; Chen, YF; Han, N; Wang, FY |
| 刊名 | NANOSCALE RESEARCH LETTERS
 |
| 出版日期 | 2019 |
| 卷号 | 14 |
| 关键词 | Si nanowires ZEOLITIC IMIDAZOLATE FRAMEWORK Reduced graphene oxide GAS SENSOR Sensitivity SENSING PROPERTIES Selectivity NANOFIBERS Formaldehyde NANOPARTICLES FABRICATION DIAGNOSIS NANOCUBES MIXTURES FILM |
| ISSN号 | 1931-7573 |
| DOI | 10.1186/s11671-019-2921-2 |
| 文献子类 | Article |
| 英文摘要 | Although significant developments have been made in the low-concentration formaldehyde monitoring in indoor air by using gas sensors, they still suffer from insufficient performance for achieving ppb-level detection. In this work, <100> oriented Si nanowires (SiNWs) with high specific surface area were prepared via metal-assisted chemical etching method (MACE), and then were uniformly coated with graphene oxide (GO) followed by the subsequent reductive process in H-2/Ar atmosphere at 800 degrees C to obtain reduced graphene oxide (RGO). The RGO coating (RGO@n-SiNWs) obviously enhances SiNWs sensitivity to low-concentration formaldehyde, benefiting from the increased specific surface area, the sensitization effect of RGO, and the formation of p-n junction between SiNWs and RGO. Specifically, RGO@n-SiNWs exhibits a high response of 6.4 to 10ppm formaldehyde at 300 degrees C, which is about 2.6 times higher than that of pristine SiNWs (2.5). Furthermore, the RGO@n-SiNWs show a high response of 2.4 to 0.1ppm formaldehyde which is the largest permissive concentration in indoor air, a low detection limit of 35ppb obtained by non-linear fitting, and fast response/recovery times of 30 and 10s. In the meanwhile, the sensor also shows high selectivity over other typical interfering gases such as ethanol, acetone, ammonia, methanol, xylene, and toluene, and shows a high stability over a measurement period of 6days. These results enable the highly sensitive, selective, and stable detection of low-concentration formaldehyde to guarantee safety of indoor environment. |
| WOS记录号 | WOS:000461353500004 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/28291]  |
| 专题 | 中国科学院过程工程研究所 |
| 推荐引用方式 GB/T 7714 | Song, LF,Luo, LQ,Xi, Y,et al. Reduced Graphene Oxide-Coated Si Nanowires for Highly Sensitive and Selective Detection of Indoor Formaldehyde[J]. NANOSCALE RESEARCH LETTERS,2019,14. |
| APA | Song, LF.,Luo, LQ.,Xi, Y.,Song, JJ.,Wang, Y.,...&Wang, Fengyun.(2019).Reduced Graphene Oxide-Coated Si Nanowires for Highly Sensitive and Selective Detection of Indoor Formaldehyde.NANOSCALE RESEARCH LETTERS,14. |
| MLA | Song, LF,et al."Reduced Graphene Oxide-Coated Si Nanowires for Highly Sensitive and Selective Detection of Indoor Formaldehyde".NANOSCALE RESEARCH LETTERS 14(2019). |
入库方式： OAI收割
来源：过程工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。