Publications by authors named "Ramakrishnan Amutha"

Biporous microsphere, flower and concaved cuboctahedrans like alpha-Fe2O3 superstructures have been synthesized by using a new synthetic method. Hydrothermal reaction of ferric chloride with potassium thiocyanate at 200 degrees C yields self-assembled microsphere, flower, and concaved cuboctahedrans like intermediates in ethanol, water:ethanol (1:1) mixed solvent and in water, respectively. These intermediates were further converted into corresponding alpha-Fe2O3 in a thermal decomposition process at 600 degrees C under oxygen atmospheric conditions.

View Article and Find Full Text PDF

Nitrogen and carbon codopants-stabilized hierarchical porous ZnS microspheres undergo an unexpected dynamic transformation into hollow microspheres when nitrogen and carbon are removed from the former. Thus, such a transformation is evidence for the unprecedented stability of non-metal doped visible light-responsive photocatalysts.

View Article and Find Full Text PDF

Monodispersed highly ordered and homogeneous ZnS microsphere with precisely controlled hierarchical and non-hierarchical surface structure was successfully fabricated in water-ethanol mixed solvent and in water without using any catalysts or templates in a hydrothermal process. The microsphere formation has been facilitated by self-assembly followed by Ostwald ripening process. The products were characterized by field-emission scanning electron microscopy (FE-SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy-dispersive X-ray spectrometry (EDX).

View Article and Find Full Text PDF

Synopsis of recent research by authors named "Ramakrishnan Amutha"

  • - Ramakrishnan Amutha's research primarily focuses on the synthesis and characterization of advanced nanomaterials, particularly iron oxide (alpha-Fe2O3) and zinc sulfide (ZnS) structures, utilizing innovative hydrothermal processes.
  • - His work demonstrates the capability to create unique morphologies, including biporous superstructures and hierarchical porous microspheres, through precise control of reaction conditions and reactants, revealing important insights into self-assembly and thermal decomposition mechanisms.
  • - Furthermore, Amutha investigates the stability and efficiency of dopant-stabilized photocatalysts, uncovering the dynamic transformations that affect their performance, which highlights the significance of non-metal dopants in enhancing the photocatalytic properties of materials under visible light.

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_sessions96uh9agfa2hod43vgc3nle4f0k7tl3d): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once