Ultralong Silver Trimolybdate Nanowires: Synthesis, Phase Transformation, Stability, and Their Photocatalytic, Optical, and Electrical Properties
Ultralong Silver Trimolybdate Nanowires: Synthesis, Phase Transformation, Stability, and Their Photocatalytic, Optical, and Electrical Properties
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超长三钼酸银纳米线：合成、相变、稳定性及其光催化、光学和电学性能
DOI：
10.1021/nn202296h
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发表时间：
2011-08-01
期刊：
影响因子：
17.1
通讯作者：
Yu, Shu-Hong
中科院分区：
文献类型：
--
作者：
Feng, Mei;Zhang, Meng;Yu, Shu-Hong
超长正交三钼酸银纳米线可以在不使用任何结构导向剂的情况下通过简单的水热法合成。系统地研究了它们的相变和在高温下的稳定性，以及在氙灯下模拟阳光的稳定性。分散良好的银纳米颗粒可以原位形成。研究了光照射纳米线骨架的光催化性能和光学性能。通过对合成的纳米线的光催化、光致发光和表面增强散射（SERS）的研究表明，通过光照射负载银纳米粒子的纳米线是一种新型的光催化和发光材料，具有作为高效SERS衬底的潜力。在-5至5 V的偏置电压范围内，单个纳米线的电导率表现出几乎非线性和对称的电流/电压（I/V）特性。欧姆机制、肖特基发射和普尔-弗伦克尔发射分别在低、中、高电场中起重要作用。
Ultralong orthorhombic silver trimolybdate nanowires (NWs) can be synthesized by a simple hydrothermal process without using any structure directing agent. Their phase transformation and stability to thermal and modeling sunlight from a Xe lamp have been systematically studied. Well-dispersed Ag nanoparticles can in situ form. on the backbone of the nanowires by photoirradiation, and their photocatalytic and optical properties have: been investigated. The Investigations on photocatalytic, photoluminescent, and surface-enhanced been scattering (SERS) of the as-synthesized nanowires indicate that these nanowires loaded with Ag nanoparticles by photoirradiation can be a new kind of photocatalytic and luminescent material and potentially can be used as an efficient SERS substrate. The electrical conductivity of an individual nanowire exhibits almost nonlinear and symmetric current/voltage (I/V) characteristics for bias voltages in the range of -5 to 5 V. Ohmic mechanism, Schottky, and the Poole-Frenkel emission play an important part, respectively, in low, medium, and high electrical fields.