نتایج جستجو برای: biogenic nanorods

تعداد نتایج: 14213  

In this work, Co3O4 nanorods were successfully prepared by microwave-assisted solid state decomposition of rod-like CoC2O4.2H2O precursor within a very short reaction time (6 min) without the use of a solvent/surfactant and complicated equipment. The as-obtained Co3O4 nanorods were fully characterized by X-ray diffract...

Journal: :Nano letters 2011
Isaac H Wildeson David A Ewoldt Robert Colby Eric A Stach Timothy D Sands

High-quality, ordered nanopores in semiconductors are attractive for numerous biological, electrical, and optical applications. Here, GaN nanorods with continuous pores running axially through their centers were grown by organometallic vapor phase epitaxy. The porous nanorods nucleate on an underlying (0001)-oriented GaN film through openings in a SiN(x) template that are milled by a focused io...

Journal: :Science 2001
V F Puntes K M Krishnan A P Alivisatos

We show that a relatively simple approach for controlling the colloidal synthesis of anisotropic cadmium selenide semiconductor nanorods can be extended to the size-controlled preparation of magnetic cobalt nanorods as well as spherically shaped nanocrystals. This approach helps define a minimum feature set needed to separately control the sizes and shapes of nanocrystals. The resulting cobalt ...

Journal: :Chemical communications 2013
Xin Liu Shuya Zhang Penglong Tan Jiang Zhou Yan Huang Zhou Nie Shouzhuo Yao

A simple colorimetric assay for blood glucose has been developed based on enzymatic engineering of gold nanorods by glucose oxidase (GOx)-mediated oxidative etching of gold nanorods.

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2006
mohammad reza hadjmohammadi soghra jafari

separation of some biogenic amines via rp-hplc using mixed micellar mobile phase was investigated. the compounds were derivatized before hand by dansyl chloride as a chromophoric reagent. appropriate conditions for separation, were determined by studying factors such as temperature, type and percentage of organic modifier, concentration of surfactants (sds and brij-35) and the ph of the mobile ...

Journal: :Angewandte Chemie 2012
Yun Zhao Clive Eley Jingping Hu John S Foord Lin Ye Heyong He Shik Chi Edman Tsang

Nb(2)O(5) nanorods and nanospheres were synthesized, and their photocatalytic activity for methylene blue decomposition in water compared. Nb(2)O(5) nanorods clearly displayed higher activity, despite their comparable surface area. With a shape-dependent surface acidity, hydrothermal stability, and high photoactivity, these Nb(2)O(5) nanorods are a unique and exciting nanomaterial for non-class...

Journal: :Nano letters 2009
Yuan Yang Chong Xie Riccardo Ruffo Hailin Peng Do Kyung Kim Yi Cui

This paper presents single nanostructure devices as a powerful new diagnostic tool for batteries with LiMn(2)O(4) nanorod materials as an example. LiMn(2)O(4) and Al-doped LiMn(2)O(4) nanorods were synthesized by a two-step method that combines hydrothermal synthesis of beta-MnO(2) nanorods and a solid state reaction to convert them to LiMn(2)O(4) nanorods. lambda-MnO(2) nanorods were also prep...

Journal: :Nanoscale 2015
Sirshendu Ghosh Manas Saha Sumana Paul S K De

High quality nearly monodisperse colloidal WO3-x nanorods with an aspect ratio ∼18 were synthesized using the thermal decomposition technique. The effects of a capping agent and an activating agent on the nanorod aspect ratio have been studied. Excess carrier concentration due to large oxygen vacancy and smaller width of the nanorods compared to the Bohr exciton radius gives rise to an increase...

Journal: :Applied and environmental microbiology 2010
Bart De Gusseme Liesje Sintubin Leen Baert Ellen Thibo Tom Hennebel Griet Vermeulen Mieke Uyttendaele Willy Verstraete Nico Boon

The presence of enteric viruses in drinking water is a potential health risk. Growing interest has arisen in nanometals for water disinfection, in particular the use of silver-based nanotechnology. In this study, Lactobacillus fermentum served as a reducing agent and bacterial carrier matrix for zerovalent silver nanoparticles, referred to as biogenic Ag(0). The antiviral action of biogenic Ag(...

Elham Hasani, Majid Zareh Saeed Safa,

ZnO nanorods with various lengths were synthesized by a two-stage route (by changing the time of growth between 0-240 min) and were characterized using XRD, SEM, UV–Vis and PL techniques. The SEM and XRD results confirmed a fast growth of (0 0 2) plane in the preferential longitudinal orientation, in contrast to lateral growth and therefore, by increasing the time of hydrothermal growth, nanoro...

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