A Green Chemical Approach to the Synthesis of Tellurium Nanowires

Lu, Qingyi; Gao, Feng; Komarneni, Sridhar

doi:10.1021/la050594p

Cited by 119 publications

(83 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tellurium nanoparticles are attracting considerable interest because of their semiconductor and fluorescence properties (CdTe quantum dots) (7,9,12,21,28). "Green" chemical principles have been developed for the synthetic manufacture of these materials (38), and an important consideration for green technologies is the generation of toxic side products of synthetic reactions, like the DMTe, DMDTe, and DMTeS species documented here. While not measured, it is likely that B. selenitireducens and S. barnesii also produce these compounds.…”

Section: Discussionmentioning

confidence: 99%

Volatilization and Precipitation of Tellurium by Aerobic, Tellurite-Resistant Marine Microbes

Ollivier

Bahrou

Marcus

et al. 2008

Appl Environ Microbiol

View full text Add to dashboard Cite

Microbial resistance to tellurite, an oxyanion of tellurium, is widespread in the biosphere, but the geochemical significance of this trait is poorly understood. As some tellurite resistance markers appear to mediate the formation of volatile tellurides, the potential contribution of tellurite-resistant microbial strains to trace element volatilization in salt marsh sediments was evaluated. Microbial strains were isolated aerobically on the basis of tellurite resistance and subsequently examined for their capacity to volatilize tellurium in pure cultures. The tellurite-resistant strains recovered were either yeasts related to marine isolates of Rhodotorula spp. or gram-positive bacteria related to marine strains within the family Bacillaceae based on rRNA gene sequence comparisons. Most strains produced volatile tellurides, primarily dimethyltelluride, though there was a wide range of the types and amounts of species produced. For example, the Rhodotorula spp. produced the greatest quantities and highest diversity of volatile tellurium compounds. All strains also produced methylated sulfur compounds, primarily dimethyldisulfide. Intracellular tellurium precipitates were a major product of tellurite metabolism in all strains tested, with nearly complete recovery of the tellurite initially provided to cultures as a precipitate. Different strains appeared to produce different shapes and sizes of tellurium containing nanostructures. These studies suggest that aerobic marine yeast and Bacillus spp. may play a greater role in trace element biogeochemistry than has been previously assumed, though additional work is needed to further define and quantify their specific contributions.Microbial resistance to the inorganic oxyanion tellurite (TeO 3 2Ϫ

show abstract

Section: Discussionmentioning

confidence: 99%

Volatilization and Precipitation of Tellurium by Aerobic, Tellurite-Resistant Marine Microbes

Ollivier

Bahrou

Marcus

et al. 2008

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…Platinum oxide nanoparticles were obtained by a green approach using sucrose as a reducing as well as stabilizing agent [17][18][19]. The nanoparticles exhibited interesting morphology when synthesized under hydrothermal conditions in the matrix of sucrose-rich medium.…”

Section: Resultsmentioning

confidence: 99%

Study of bactericidal properties of carbohydrate-stabilized platinum oxide nanoparticles

et al. 2012

View full text Add to dashboard Cite

Platinum oxide nanoparticles were prepared by a simple hydrothermal route and chemical reduction using carbohydrates (fructose and sucrose) as the reducing and stabilizing agents. In comparison with other metals, platinum oxide has less environmental pollution. Therefore, Pt is considered an appropriate candidate to deal with environmental pathogens. The crystallite size of these nanoparticles was evaluated from X-ray diffraction, atomic force microscopy, and transmission electron microscopy (TEM) and was found to be 10 nm, which is the demonstration of EM bright field and transmission electron microscopy. The effect of carbohydrates on the morphology of the nanoparticles was studied using TEM. The nanoparticles were administered to the Pseudomonas stutzeri and Lactobacillus cultures, and the incubation was done at 37°C for 24 h. The nanocomposites exhibited interesting inhibitory as well as bactericidal activity against P. stutzeri and Lactobacillus species. Incorporation of nanoparticles also increased the thermal stability of the carbohydrates. The results of this paper showed that carbohydrates can serve as a carrier for platinum oxide nanoparticles, and nanocomposites can have potential biological applications.

show abstract

“…Tellurium nanowires have been synthesized previously, using hydrazine as a reducing agent and a combination of surfactants that rely on or produce harmful reagents and by-products (Mayers & Xia 2002;Mo et al 2002). It was found that, by using starch as a reducing sugar, the compound H 2 TeO 4 $2H 2 O could be reduced under hydrothermal conditions to form tellurium nanowires in a high yield (Lu et al 2005). As well as being more environmentally friendly, the starch acted to sequester the tellurium salt, thereby ensuring a homogeneous distribution of the desired phase throughout the composite precursor material.…”

Section: (D ) Starchmentioning

confidence: 99%

Biotemplated syntheses of anisotropic nanoparticles

Hall

2008

Proc. R. Soc. A.

View full text Add to dashboard Cite

The technological advances predicted (or, perhaps, demanded) for the twenty-first century are intimately linked to the crystallochemically controlled synthesis of highperformance functional materials. To answer the new hendiatris of 'smaller, faster, better', the manufacture of these materials as nanoparticles has become a scientific noblesse oblige. Direct incorporation into the next generation of electronic devices will necessitate anisotropic forms of these materials, be they nanowires, nanotapes or nanotubes. Chemists have recently discovered that, in addition to the classical methods of anisotropic growth, new routes allow more complex materials to be synthesized in these morphologies. This review describes, using a series of examples, how the morphology of functional materials can be controlled using templated growth mediated by a biopolymer. By involving a biopolymer in the synthetic protocol, anisotropic nanoparticles and assemblages of even quite complex materials can be generated in syntheses that are simple, elegant and highly specific.

show abstract

A Green Chemical Approach to the Synthesis of Tellurium Nanowires

Cited by 119 publications

References 33 publications

Volatilization and Precipitation of Tellurium by Aerobic, Tellurite-Resistant Marine Microbes

Volatilization and Precipitation of Tellurium by Aerobic, Tellurite-Resistant Marine Microbes

Study of bactericidal properties of carbohydrate-stabilized platinum oxide nanoparticles

Biotemplated syntheses of anisotropic nanoparticles

Contact Info

Product

Resources

About