Element Directed Aqueous Solution Synthesis of Copper Telluride Nanoparticles, Characterization, and Optical Properties

2009 ◽  
Vol 9 (7) ◽  
pp. 3089-3094 ◽  
Author(s):  
Pushpendra Kumar ◽  
Kedar Singh
Keyword(s):  
Aqueous Solution ◽  
Optical Properties ◽  
Solution Synthesis ◽  
Copper Telluride ◽  
Nanoparticles Characterization

Aqueous-solution synthesis of uniform PbS nanocubes and their optical properties

2015 ◽  
Vol 17 (9) ◽  
Author(s):  
Yuan Li ◽  
Qing Li ◽  
Huijie Wu ◽  
Chengzhi Huang ◽  
Hua Lin ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Optical Properties ◽  
Solution Synthesis

scholarly journals Fabrication of Transparent Mg(OH)2 Thin Films by Drop-Dry Deposition

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 724
Author(s):  
Tong Li ◽  
Masaya Ichimura
Keyword(s):  
Thin Films ◽  
Aqueous Solution ◽  
Optical Properties ◽  
Surface Morphology ◽  
Magnesium Hydroxide ◽  
Dry Deposition ◽  
Visible Range ◽  
Substrate Heating ◽  
Water Effects ◽  
Deposition Conditions

Magnesium hydroxide (Mg(OH)2) thin films were deposited by the drop-dry deposition (DDD) method using an aqueous solution containing Mg(NO3)2 and NaOH. DDD was performed by dropping the solution on a substrate, heating-drying, and rinsing in water. Effects of different deposition conditions on the surface morphology and optical properties of Mg(OH)2 thin films were researched. Films with a thickness of 1−2 μm were successfully deposited, and the Raman peaks of Mg(OH)2 were observed for them. Their transmittance in the visible range was 95% or more, and the bandgap was about 5.8 eV. It was found that the thin films have resistivity of the order of 105 Ωcm. Thus, the transparent and semiconducting Mg(OH)2 thin films were successfully prepared by DDD.

scholarly journals Glucosamine Phosphate Induces AuNPs Aggregation and Fusion into Easily Functionalizable Nanowires

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 622 ◽  
Author(s):  
Álvaro Martínez ◽  
Yanchao Lyu ◽  
Fabrizio Mancin ◽  
Paolo Scrimin
Keyword(s):  
Aqueous Solution ◽  
Optical Properties ◽  
Surface Plasmon ◽  
Near Infrared ◽  
Au Nanoparticles ◽  
Surface Plasmon Band ◽  
Acid Phosphate ◽  
Plasmon Band ◽  
Dimensional Distribution ◽  
Au Nanowires

The challenge to obtain plasmonic nanosystems absorbing light in the near infrared is always open because of the interest that such systems pose in applications such as nanotherapy or nanodiagnostics. Here we describe the synthesis in an aqueous solution devoid of any surfactant of Au-nanowires of controlled length and reasonably narrow dimensional distribution starting from Au-nanoparticles by taking advantage of the properties of glucosamine phosphate under aerobic conditions and substoichiometric nanoparticle passivation. Oxygen is required to enable the process where glucosamine phosphate is oxidized to glucosaminic acid phosphate and H2O2 is produced. The process leading to the nanosystems comprises nanoparticles growth, their aggregation into necklace-like aggregates, and final fusion into nanowires. The fusion requires the consumption of H2O2. The nanowires can be passivated with an organic thiol, lyophilized, and resuspended in water without losing their dimensional and optical properties. The position of the broad surface plasmon band of the nanowires can be tuned from 630 to >1350 nm.

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