Superductile, Wavy Silica Nanostructures Inspired by Diatom Algae

2011 ◽  
Vol 13 (10) ◽  
pp. B405-B414 ◽  
Author(s):  
Andre P. Garcia ◽  
Nicola Pugno ◽  
Markus J. Buehler
Keyword(s):  
Diatom Algae ◽  
Silica Nanostructures

Light emitting silica nanostructures by surface functionalization of diatom algae shells with a triethoxysilane-functionalized π-conjugated fluorophore

MRS Advances ◽  
2015 ◽  
Vol 1 (57) ◽  
pp. 3817-3823 ◽  
Author(s):  
Danilo Vona ◽  
Marco Lo Presti ◽  
Stefania Roberta Cicco ◽  
Fabio Palumbo ◽  
Roberta Ragni ◽  
...  
Keyword(s):  
Surface Functionalization ◽  
Organic Dye ◽  
Diatom Algae ◽  
Thalassiosira Weissflogii ◽  
Light Emitting ◽  
Biotechnological Approach ◽  
Silica Nanostructures ◽  
Organic Fluorophore ◽  
Living Diatoms

ABSTRACTThe functionalization of biosilica shells (frustules) of diatoms microalgae with a tailored luminescent molecule is a convenient, scalable and biotechnological approach for obtaining new light emitting silica nanostructures with promising applications in photonics. In particular, here we report the synthesis of a red emitting organic fluorophore and its covalent linking to the surface of mesoporous biosilica extracted from Thalassiosira weissflogii diatoms cultured in our laboratories. The organic dye has a conjugated skeleton composed of thienyl, benzothiadiazolyl and phenyl units and a peripheral triethoxysilyl group which enables its stable binding onto the frustules surface. The protocol to extract the biosilica shells from living diatoms preserving their natural ornate nanostructured morphology is also discussed.

scholarly journals Fabrication of silica/PVA-co-PE nanofiber membrane for oil/water separation

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Yuanli Chen ◽  
Hui Fan ◽  
Xinlin Zha ◽  
Wenwen Wang ◽  
Yi Wu ◽  
...  
Keyword(s):  
High Efficiency ◽  
Silicone Oil ◽  
Hydroxyl Groups ◽  
Water Mixture ◽  
Silica Nanospheres ◽  
Nanofiber Membrane ◽  
Water Separation ◽  
Oil Water Separation ◽  
Silica Nanostructures ◽  
Oil Water

AbstractHigh efficiency and anti-pollution oil/water separation membrane has been widely explored and researched. There are a large number of hydroxyl groups on the surface of silica, which has good wettability and can be used for oil-water separation membranes. Hydrophilic silica nanostructures with different morphologies were synthesized by changing templates and contents of trimethylbenzene (TMB). Here, silica nanospheres with radical pores, hollow silica nanospheres and worm-like silica nanotubes were separately sprayed on the PVA-co-PE nanofiber membrane (PM). The abundance of hydroxyl groups and porous structures on PM surfaces enabled the absorption of silica nanospheres through hydrogen bonds. Compared with different silica nanostructures, it was found that the silica/PM exhibited excellent super-hydrophilicity in air and underwater “oil-hating” properties. The PM was mass-produced in our lab through melt-extrusion-phase-separation technique. Therefore, the obtained membranes not only have excellent underwater superoleophobicity but also have a low-cost production. The prepared silica/PM composites were used to separate n-hexane/water, silicone oil/water and peanut oil water mixtures via filtration. As a result, they all exhibited efficient separation of oil/water mixture through gravity-driven filtration.

Simulating of Phytoplankton Development in the Rybinsk Reservoir

2015 ◽  
pp. 32-40
Author(s):  
Keyword(s):  
Water Exchange ◽  
Rybinsk Reservoir ◽  
Vegetation Period ◽  
Diatom Algae ◽  
Algae Biomass ◽  
Internal Water ◽  
Kinetics Of ◽  
The Rybinsk Reservoir

A model of phytoplankton development within a reservoir including the description of kinetics of its interactions in the ecosystem and internal water exchange of the reservoir has been presented. The carried out calculations of changes of the cyanobacteria and diatom algae biomass in the Rybinsk Reservoir in the vegetation period have shown their satisfactory convergence with the fi eld observations data.

Ingeniously designed Silica nanostructures as an exceptional support: Opportunities, potential challenges and future prospects for viable degradation of pesticides

2022 ◽  
Vol 301 ◽  
pp. 113821
Author(s):  
Rakesh Kumar Sharma ◽  
Bhawna Kaushik ◽  
Sneha Yadav ◽  
Pooja Rana ◽  
Pooja Rana ◽  
...  
Keyword(s):  
Future Prospects ◽  
Silica Nanostructures

Self-assembly of ordered silica nanostructures by electrospray

2014 ◽  
Vol 121 ◽  
pp. 68-71 ◽  
Author(s):  
Arnau Coll ◽  
Sandra Bermejo ◽  
Luis Castañer
Keyword(s):  
Self Assembly ◽  
Silica Nanostructures

The role of endemic diatom algae in the phytoplankton of Lake Baikal

Hydrobiologia ◽  
2006 ◽  
Vol 568 (S1) ◽  
pp. 87-94 ◽  
Author(s):  
G. I. Popovskaya ◽  
Ye. V. Likhoshway ◽  
S. I. Genkal ◽  
A. D. Firsova
Keyword(s):  
Lake Baikal ◽  
Diatom Algae

Investigation of toxicological effects of amorphous silica nanostructures with amine-functionalized surfaces on Vero cells

Chemosphere ◽  
2019 ◽  
Vol 214 ◽  
pp. 679-687 ◽  
Author(s):  
Rodrigo Costa Puerari ◽  
Emeline Ferrari ◽  
Martina Garcia de Cezar ◽  
Renata Amanda Gonçalves ◽  
Carmen Simioni ◽  
...  
Keyword(s):  
Amorphous Silica ◽  
Vero Cells ◽  
Toxicological Effects ◽  
Amine Functionalized ◽  
Functionalized Surfaces ◽  
Silica Nanostructures

Advancements in Diatom Algae Based Biofuels

2021 ◽  
pp. 127-148
Author(s):  
Pankaj Kumar Singh ◽  
Archana Tiwari
Keyword(s):  
Diatom Algae
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