Copper doped nickel aluminate: Synthesis, characterisation, optical and colour properties

V. Elakkiya; R. Abhishekram; S. Sumathi

doi:10.1016/j.cjche.2019.01.008

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Copper doped nickel aluminate: Synthesis, characterisation, optical and colour properties

Materials and Product Engineering | Updated：2026-01-06

- Copper doped nickel aluminate: Synthesis, characterisation, optical and colour properties
- Chinese Journal of Chemical Engineering Vol. 27, Issue 10, Pages: 2596-2605(2019)
- Affiliations：
  
  Department of Chemistry, School of Advanced Sciences, VIT, Vellore,India,632014
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.01.008
  CLC：
- Published：2019
- Accepted：
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V. Elakkiya, R. Abhishekram, S. Sumathi. Copper doped nickel aluminate: Synthesis, characterisation, optical and colour properties[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2596-2605.
DOI：

V. Elakkiya, R. Abhishekram, S. Sumathi. Copper doped nickel aluminate: Synthesis, characterisation, optical and colour properties[J]. Chinese Journal of Chemical Engineering, 2019, 27(10): 2596-2605. DOI： 10.1016/j.cjche.2019.01.008.

摘要

Abstract

Novel environment friendly inorganic nano green pigments

(

0.02

0.04

0.06

0.08

0.1) were successfully synthesised by simple

cost effective sol-gel method using citric acid as a gelling agent. Synthesised nano pigments were characterised by powder XRD

FT-IR

UV-DRS

SEM-EDX and TEM. Distribution of elements such as Ni

Al and O for the pigment Ni

0.98

0.02

was authenticated by elemental mapping analysis. The colour parameters were studied using CIE-LAB parameters. It is evident from the DRS measurement that the band gap energy of NiAl

(3.11 eV) has been massively diminished to 2.63 eV when

=0.02

unexpectedly changed the colour of the pigment from cyan to green. Whilst

=0.1 the pigment colour has turned into grey and the corresponding band gap condensed into 2.17 eV. Effect of mineralisers like NaF

CaF

and Li

on the colour of Ni

0.98

0.02

was investigated.

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