Tungsten Trioxide Nanorods Characterization

Nanorod is rod-shaped nanoparticles scale from a few nanometers to hundreds of nanometers; it is relatively stable and abundant physical and chemical properties. Surface plasmon resonance wavelength nanorods with aspect ratio can be changed. Because of its unique optical, photovoltaic, solar thermal, photochemical, and molecular biological properties, nanorod caused many concerns by materials scientists, biochemists, physicians, physicists, micro- Electronics engineers and other scientists on the extensive and intensive studies.

In the growth process of tungsten trioxide nanorods, sodium ions preferentially adsorbed in the surface of the tungsten trioxide crystal, the crystal surface inhibits the growth of tungsten trioxide nanorods under visible light, which shows better catalytic performance, and gas sensing performance, the test results show that tungsten trioxide nanorods operating temperature is low, and trimethylamine trioxide has a high sensitivity and good response and recovery time, the material shows a good prospect.

When the molar ratio of sodium sulfate and sodium tungstate is 4: 1, XRD diagrams of the various hydrothermal can be seen when the water heated for longer than 24h, the product is pure hexagonal tungsten trioxide in the hydrothermal time 6h , the hexagonal tungsten trioxide (200 planes) has emerged, and (001) planes appeared until 12h, which suggests that the early stages of tungsten trioxide hexagonal crystal growth (200) crystal surface is an advantage, it has adsorbed in solution; reducing the chance of tungsten trioxide crystals to the (200) plane growth of tungsten trioxide to make it another advantage crystal face (001) growth, the (001) crystal face has a significant growth after 48h, tungsten trioxide nanorods becomes in the hydrothermal.

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