Brush-Like Hierarchical ZnO Nanostructures: Synthesis, Photoluminescence and Gas Sensor Properties

被引：346

作者：

Zhang, Yuan ^{[1
,2
]}

Xu, Jiaqiang ^{[1
,3
]}

Xiang, Qun ^{[1
]}

Li, Hui ^{[1
,2
]}

Pan, Qingyi ^{[1
]}

Xu, Pengcheng ^{[3
]}

机构：

[1] Shanghai Univ, Dept Chem, Coll Sci, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Dept Phys, Coll Sci, Shanghai 200444, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 09期

关键词：

ZINC-OXIDE; HYDROTHERMAL SYNTHESIS; OPTICAL-PROPERTIES; SENSING PROPERTIES; CONTROLLED GROWTH; EPITAXIAL-GROWTH; ASSISTED ROUTE; NANOWIRES; NANORODS; SEMICONDUCTOR;

D O I：

10.1021/jp8092258

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Brush-like hierarchical ZnO nanostructures assembled from initial ID ZnO nanostructures were prepared from sequential nucleation and growth following a hydrothermal process. The morphology, structure, and optical property of hierarchical ZnO nanostructures were characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), and photoluminescence (PL) studies. The FE-SEM images showed that the brush-like hierarchical ZnO nanostructures are composed of 6-fold nanorod-arrays grown on the side surface of core nanowires. Compared with ZnO nanowires, brush-like hierarchical ZnO nanostructures easily fabricated satisfactory ethanol sensors. The main advantages of these sensors are featured in excellent selectivity, fast response (less than 10 s), high response (sensitivity), and low detection limit (with detectable ethanol concentration in ppm).

引用

页码：3430 / 3435

页数：6

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