A precursor route to single-crystalline WO3 nanoplates with an uneven surface and enhanced sensing properties.
A precursor route to single-crystalline WO3 nanoplates with an uneven surface and enhanced sensing properties.
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DOI：
10.1039/c2dt30748k
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发表时间：
2012-07
影响因子：
4
通讯作者：
Xiaoxin Zou;Guodong Li;Pei-Pei Wang-Pei;J. Su;Jun Zhao;Li-Jing Zhou;Yu-ning Wang;Jie‐Sheng Chen
中科院分区：
文献类型：
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作者：
Xiaoxin Zou;Guodong Li;Pei-Pei Wang-Pei;J. Su;Jun Zhao;Li-Jing Zhou;Yu-ning Wang;Jie‐Sheng Chen
以WCl6为钨源，苯甲醇为溶剂，通过非水合成路线成功地制备了具有片状形貌的含W无机-有机纳米杂化材料。所制备的杂化纳米材料通过简单的热处理工艺直接用作形成WO(3)纳米板的有效前驱体。得到的WO(3)材料保持了前驱体的片状形貌，并具有独特的不均匀表面结构。人们注意到，使用无机-有机混合前驱体对于在WO(3)纳米板上形成不平坦的表面是必不可少的，因为WO(3)纳米板在相对较低的工作温度(200℃)下表现出很高的灵敏度和选择性来检测丙酮蒸汽。WO(3)纳米材料之所以具有优异的传感性能，除了具有较小的颗粒尺寸和超薄的形貌外，还得益于其独特的不均匀表面结构。
A W-containing inorganic-organic nanohybrid with a plate-like morphology has been successfully prepared through a nonaqueous synthetic route using WCl(6) as the tungsten source and benzyl alcohol as the solvent. The as-prepared hybrid nanomaterial was used directly as an efficient precursor for the formation of WO(3) nanoplates via a simple thermal treatment process. The as-obtained WO(3) material maintains the plate-like morphology of the precursor and possesses a unique uneven surface structure. It is noted that the use of a inorganic-organic hybrid precursor is essential for the creation of an uneven surface on the WO(3) nanoplates, which exhibit high sensitivity and selectivity for the detection of acetone vapour at a relatively low operating temperature (200 °C). The excellent sensing performance of the WO(3) nanomaterial is attributed to its unique uneven surface structure besides the small particle size and ultrathin morphology.