Effect of Molar Ratio on Structural and Size of ZnO/C Nanocomposite Synthesized Using a Colloidal Method at Low Temperature

Siham Lhimr; Saidati Bouhlassa; Bouchaib Ammary

doi:10.22146/ijc.37932

Effect of Molar Ratio on Structural and Size of ZnO/C Nanocomposite Synthesized Using a Colloidal Method at Low Temperature

https://doi.org/10.22146/ijc.37932

Siham Lhimr^(1*), Saidati Bouhlassa⁽²⁾, Bouchaib Ammary⁽³⁾

(1) Department of Chemistry, Mohammed V University, 4 Avenue Ibn Battouta, BP 1014 RP, Rabat 10000, Morocco
(2) Department of Chemistry, Mohammed V University, 4 Avenue Ibn Battouta, BP 1014 RP, Rabat 10000, Morocco
(3) Department of Chemistry, Mohammed V University, 4 Avenue Ibn Battouta, BP 1014 RP, Rabat 10000, Morocco
(*) Corresponding Author

Abstract

In this paper we study the effects of different molar ratio R of Zn²⁺ to OH^–(R= n_OH–/n_Zn(II) of the precursor was investigated by varying the amount of NaOH. Samples have been synthesized by the colloidal method at room temperature using (ZnCl₂), citric acid (C₆H₈O₉·H₂O) and sodium hydroxide (NaOH). The formation of ZnO/C composite was characterized by The X-ray diffraction patterns indicated a high crystallinity and nanocrystalline size of ZnO with hexagonal wurtzite structure. The morphologies of the particles have been studied with a scanning electronic microscopy (SEM). The existence of carbon into the composite was detected by FTIR and EDS. The optical band gap of various ZnO/C composite was calculated from UV-Visible absorption measurement varied in the range 3.301 to 3.282 eV according to R values.

Keywords

ZnO/C composite; cow-temperature synthesis; colloidal method; molar ratio R

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DOI: https://doi.org/10.22146/ijc.37932