Improved room-temperature hydrogen sensing performance of directly formed Pd/WO3 nanocomposite | |
Liu, Bin ; Cai, Daoping ; Liu, Yuan ; Wang, Dandan ; Wang, Lingling ; Wang, Yanrong ; Li, Han ; Li, Qiuhong ; Wang, Taihong ; Wang TH(王太宏) | |
刊名 | http://dx.doi.org/10.1016/j.snb.2013.11.057 |
2014 | |
关键词 | ENERGY CARRIER WO3 NANOWIRES GAS SENSORS PD CATALYST THIN-FILMS PARTICLES |
英文摘要 | National Natural Science Foundation of China [61376073]; The fast-growing hydrogen economy creates a high demand for fast and safe hydrogen detecting techniques. Nanocomposites based on palladium (Pd) loaded metal oxides have been widely used to meet this requirement. However, the relationship between how the Pd nanocrystals and metal oxides are joined together and the sensing performance has not been rigorously studied. We report the shape-controlled synthesis of Pd nanocubes on WO3 nanoplates by a solvothermal method. Room-temperature hydrogen sensors based on the Pd/WO3 nanocomposite are demonstrated with high and fast response. A detection limit of 0.05 vol% is achieved with a response of 21. The response time of this sensor decreases with increasing gas concentrations and becomes less than 10 s as the concentration exceeds 1 vol%. In addition, the hydrogen sensing characteristics of this nanocomposite have been compared with that of pure WO3 and mechanically mixed Pd nanocubes and WO3 nanoplates. The significantly improved performance of the directly formed composite compared with the mechanically mixed one possessing the same Pd loading amount is discussed based on the spillover effect. In addition, this work indicates that seeking methods to form robust contact between Pd nanocrystals and metal oxides is a promising strategy to improve the sensing performance. (C) 2013 Elsevier B.V. All rights reserved. |
语种 | 英语 |
出版者 | ELSEVIER SCIENCE SA |
内容类型 | 期刊论文 |
源URL | [http://dspace.xmu.edu.cn/handle/2288/92722] |
专题 | 信息技术-已发表论文 |
推荐引用方式 GB/T 7714 | Liu, Bin,Cai, Daoping,Liu, Yuan,et al. Improved room-temperature hydrogen sensing performance of directly formed Pd/WO3 nanocomposite[J]. http://dx.doi.org/10.1016/j.snb.2013.11.057,2014. |
APA | Liu, Bin.,Cai, Daoping.,Liu, Yuan.,Wang, Dandan.,Wang, Lingling.,...&王太宏.(2014).Improved room-temperature hydrogen sensing performance of directly formed Pd/WO3 nanocomposite.http://dx.doi.org/10.1016/j.snb.2013.11.057. |
MLA | Liu, Bin,et al."Improved room-temperature hydrogen sensing performance of directly formed Pd/WO3 nanocomposite".http://dx.doi.org/10.1016/j.snb.2013.11.057 (2014). |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论