Issue 4, 2012
From the journal:

RSC Advances

Growth morphologies, phase formation, optical & biological responses of nanostructures of CuO and their application as cooling fluid in high energy density devices

Kajal Kumar Dey,ac   Ashutosh Kumar,b   Rishi Shanker,b   Alok Dhawan,b   Meher Wan,c   Raja Ram Yadavc  and  Avanish Kumar Srivastava*a  

* Corresponding authors

a Electron and Ion Microscopy, Materials and Chemical Metrology, National Physical Laboratory, Council of Scientific and Industrial Research, Dr K. S. Krishnan Road, India
E-mail: aks@nplindia.org

b Nanomaterial Toxicology group, Indian Institute of Toxicology Research, Council of Scientific and Industrial Research, M.G. Road, India

c Department of Physics, University of Allahabad, Allahabad, India

Abstract

Different nanoscale objects of CuO have been synthesized by a simple chemical route where the Cu(OH)2 nanostructures were first synthesized by the alkaline hydrolysis of Cu(NO3)2·3H2O using NaOH as a base and the synthesized precipitate was subsequently annealed at a temperature of 130 °C. The alkaline content (pH) of the solutions during the hydrolysis process was varied to tailor the morphologies and dimensions of the nanostructures, consequently a series of fascinatingly shaped nanostructures, e.g. seeds, ellipsoidal, rods and leaves were obtained. Topographical characteristics along with the mechanism behind the structural variation have been rationalized by XRD, FTIR, SEM and HRTEM investigations. Optical performance of these samples provided simultaneous emission in the visible bands of blue, green, yellow and red, which were correlated to the size, shape and structural defects of these nano-scaled objects. The toxicity of these nanostructured materials were also put into perspective and it was found that the leaf shaped particles were the most toxic among the various shapes of nano-CuO. Finally the synthesized particles, when applied as nanofluids (water medium) showed their ability to enhance the thermal conductivity of water to a noticeable degree (above 40%) at high temperatures, even at very small concentrations, bespeaking their applicability in cooling fluids.

Graphical abstract: Growth morphologies, phase formation, optical & biological responses of nanostructures of CuO and their application as cooling fluid in high energy density devices

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C1RA00710F
Article type
Paper
Submitted
10 Sep 2011
Accepted
21 Oct 2011
First published
19 Dec 2011

RSC Adv., 2012,2, 1387-1403

Permissions

Request permissions

Growth morphologies, phase formation, optical & biological responses of nanostructures of CuO and their application as cooling fluid in high energy density devices

K. K. Dey, A. Kumar, R. Shanker, A. Dhawan, M. Wan, R. R. Yadav and A. K. Srivastava, RSC Adv., 2012, 2, 1387 DOI: 10.1039/C1RA00710F

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements