Investigation of porous silica nanostructures in diatoms isolated from Kurichi and Sulur lakes of Coimbatore, India using field emission scanning electron microscopy

Here, we report on an electrochemical impedance study of silica of organic origin as an active electrode material. The electrode material obtained from carbonized marine biomass containing nanoporous diatoms has been characterised by means of XRD, IR, SEM and EIS. Different kinds of crystallographic phases of silica as a result of thermal treatment have been found. The electrode is electrochemically stable during subsequent cyclic voltammetry measurements taken in the potential range from 0.005 up to 3.0 V vs. Li/Li + . The material has been found to exhibit high charge capacitance of 521 mAh g −1 being cycled at a rate C/20 with capacity retention of about 97%. Electrochemical impedance spectroscopy performed at an equilibrated potential E = 0.1 V in the temperature range 288-294 K discloses low charge transfer resistivity and low diffusional impedance.

show abstract

Bioaccumulation of Titanium in diatom Cyclotella atomus Hust

Sanniyasi,

Gopal,

Damodharan

et al. 2023

Biometals

View full text Add to dashboard Cite

Diatoms are unique photoautotrophic microalgae, in which the outer cell wall is composed of a silici ed skeletal structure called frustules. These microalgae have relatively higher generation times and growth rates than other groups of microalgae. An interesting feature is that the diatom can accumulate a greater volume of heavy metals in its frustule, and have some specialized proteins and enzymes for detoxi cation of heavy metals. In the present study, a centric diatom was isolated from the Adyar River, Chennai, Tamil Nadu, India, and morphologically identi ed as Cyclotella atomus Hust. Based on the bioaccumulation study on the treatment with TiO 2 with culturing the diatom Cyclotella atomus and SEM-EDAX analysis it has resulted that, the Ti accumulated on the frustules of the diatom. Therefore, biogenic accumulation and fabrication of Titanium frustules in diatom have advantages in enhancing the e ciency of solar cells.

show abstract

Investigation of porous silica nanostructures in diatoms isolated from Kurichi and Sulur lakes of Coimbatore, India using field emission scanning electron microscopy

Cited by 6 publications

References 16 publications

Recent Insights Into the Ultrastructure of Diatoms Using Scanning and Transmission Electron‐Microscopy

Recent Insights Into the Ultrastructure of Diatoms Using Scanning and Transmission Electron‐Microscopy

Biosilica from sea water diatoms algae—electrochemical impedance spectroscopy study

Bioaccumulation of Titanium in diatom Cyclotella atomus Hust

Contact Info

Product

Resources

About