Convenient, room-temperature liquid ammonia routes to metal chalcogenides

Henshaw, Geoff S.; Parkin, Ivan P.; Shaw, Graham A.

doi:10.1039/a605665b

Cited by 197 publications

(110 citation statements)

References 19 publications

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“…The data are shown in Figure 6A. Te NWs show 33 Similar results have been obtained when Ag 2 Te nanotubes were exposed to a laser for a long time. 8 SERS is one of the most sensitive analytical tools to provide vibrational information when molecules are adsorbed onto metallic nanostructures.…”

Section: Resultssupporting

confidence: 74%

Room-Temperature Chemical Synthesis of Silver Telluride Nanowires

Samal

Pradeep

2009

J. Phys. Chem. C

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We have developed a room-temperature solution-phase route for the preparation of one-dimensional silver telluride nanowires (Ag 2 Te NWs). The Ag 2 Te NWs of 600 nm length and 20 nm diameter were synthesized by the reaction of tellurium nanowires (Te NWs) with silver nitrate (AgNO 3 ) in water. We propose that Te NWs act as the template and the reducing agent simultaneously, enabling the formation of polycrystalline Ag 2 Te NWs. Various microscopic and spectroscopic tools, such as HRTEM, SEM, EDAX, XRD, DSC, XPS, and Raman, were used for the characterization of Ag 2 Te NWs. The phase transition corresponding to the structural transition from the low-temperature monoclinic phase to the high-temperature face-centered cubic phase occurs at 417.7 K. We studied the electrical resistance and investigated the influence of temperature on the thermal emf. The Seebeck coefficient showed a maximum of ∼142 µV K -1 , a value much higher than that of the bulk material and thin films (65-130 µV K -1 ). A surface-enhanced Raman scattering investigation of dispersed Ag 2 Te NWs showed them to be sensitive up to 10 -7 M crystal violet. The monodispersity and the homogeneity of the NWs through a simple solution-phase protocol would pave the way for further studies and applications.

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Section: Resultssupporting

confidence: 74%

Room-Temperature Chemical Synthesis of Silver Telluride Nanowires

Samal

Pradeep

2009

J. Phys. Chem. C

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“…[14] Most of the products Parkin obtained were amorphous and usually crystallized after thermal treatment at 300 8C. [15] During Parkins experiments, manipulations had to be carried out very carefully at À77 8C in thick-walled glass vessels. Qian and co-workers synthesized copper and silver chalcogenides by using solvothermal methods at temperatures in the range 140-180 8C.…”

Section: Introductionmentioning

confidence: 99%

Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Zhang

Jia

et al. 2006

Chemistry A European J

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Various nanostructured films of copper and silver tellurides were hydrothermally grown on the corresponding metal substrates through reactions between metal foils and tellurium powder in different media. Interesting morphologies including nanowires, nanorods, nanobelts, nanosheets, and hierarchical dendrites were obtained. The nanostructured films were characterized by using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and high-resolution TEM (HRTEM). A growth mechanism was proposed based on the characterization results. This study provides a low-temperature, solution-phase approach to grow low-dimensional, nanostructured metal tellurides with controllable morphologies.

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“…Furthermore, Raman spectra of PbS nanowires are reported here, and their characteristic Raman peak (190 cm room temperature. [25] Recently, with the development of nanoscience and nanotechnology, more and more interest has been focused on the production of PbS nanoparticles and nanowhiskers. Uniform cube-shaped PbS nanocrystals (< 10 nm) were produced by mixing metal-oleylamine complexes with sulfur at 220 8C.…”

Section: Introductionmentioning

confidence: 99%

Orthogonal PbS Nanowire Arrays and Networks and Their Raman Scattering Behavior

Wang

Zhang

et al. 2005

Chemistry A European J

132

105

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Three-dimensional, orthogonal lead sulfide (PbS) nanowire arrays and networks have been prepared by using a simple, atmospheric pressure chemical vapor deposition (APCVD) method. These uniform nanowires (average diameter 30 nm) grow epitaxially from the surface of the initial PbS crystal seeds and form orthogonal arrays and networks in space. The growth mechanism has been explored, and the process was classified as homogeneous, epitaxial growth in the 200 directions. Furthermore, Raman spectra of PbS nanowires are reported here, and their characteristic Raman peak (190 cm(-1), no shoulder) could be used as a unique probe for the study of PbS nanomaterials.

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Convenient, room-temperature liquid ammonia routes to metal chalcogenides

Cited by 197 publications

References 19 publications

Room-Temperature Chemical Synthesis of Silver Telluride Nanowires

Room-Temperature Chemical Synthesis of Silver Telluride Nanowires

Controlled Hydrothermal Synthesis and Growth Mechanism of Various Nanostructured Films of Copper and Silver Tellurides

Orthogonal PbS Nanowire Arrays and Networks and Their Raman Scattering Behavior

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