Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Dina F Katowah; Sayed M Saleh; Sara A Alqarni; Reham Ali; Gharam I Mohammed; Mahmoud A Hussein

doi:10.1038/s41598-021-84540-y

Network structure-based decorated CPA@CuO hybrid nanocomposite for methyl orange environmental remediation

Sci Rep. 2021 Mar 3;11(1):5056. doi: 10.1038/s41598-021-84540-y.

Authors

Dina F Katowah¹, Sayed M Saleh^{2

3}, Sara A Alqarni⁴, Reham Ali^{2

5}, Gharam I Mohammed¹, Mahmoud A Hussein^{6

7}

Affiliations

¹ Department of Chemistry, Faculty of Applied Science, Umm Al-Qura University, P.O. Box 16722, Makkah, 21955, Saudi Arabia.
² Department of Chemistry, College of Science, Qassim University, Buraidah, 51452, Saudi Arabia.
³ Chemistry Branch, Department of Science and Mathematics, Faculty of Petroleum and Mining Engineering, Suez University, 43721, Suez, Egypt.
⁴ Department of Chemistry, College of Science, University of Jeddah, Jeddah, Saudi Arabia.
⁵ Department of Chemistry, Faculty of Science, Suez University, 43518, Suez, Egypt.
⁶ Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia. mahussein74@yahoo.com.
⁷ Polymer Chemistry Lab, Chemistry Department, Faculty of Science, Assiut University, Assiut, 71516, Egypt. mahussein74@yahoo.com.

Abstract

A unique network core-shell hybrid design-based cross-linked polyaniline (CPA), which was coated with CuO nanoparticles (NPs) and decorated with nitrogen-doped SWCNT/GO/cellulose N-SWCNTS-GO-CE, has been fabricated using the oxidative polymerization technique. This hybrid nanocomposite shows excellent photocatalytic degradation and an acceptable adsorption capability for Methyl Orange (MO) dye in aqueous solutions with a very slight effect for the N-SWCNTS-GO-CE CuO component. The prepared nanocomposites were used for the removal of a carcinogenic and noxious dye, Methyl Orange, from aqueous samples under various adsorption conditions. Approximately 100% degradation of 10 mg/L of Methylene orange dye was observed within 100 min at pH 6.0 using 50 mg/L CPA/N-SWCNTS-GO-CE/CuO nanocomposite under UV radiation. Additionally, significant factors were investigated on the degradation process including the contact time, MO initial concentration (C_i), solution pH, and dosage of the CuO nanocomposite. All investigated experiments were performed under UV radiation, which provided significant data for the MO degradation process. Furthermore, the recovery of the nanocomposite was studied based on the photocatalytic process efficiency. The obtained data provide the high opportunity of reusing CPA/N-SWCNTS-GO-CE/CuO nanocomposite for numerous photocatalytic processes. The CPA/N-SWCNTS-GO-CE/CuO nanocomposite was prepared via chemical oxidative copolymerization of polyaniline (PANI) with p-phenylenediamine (PPDA) and triphenylamine (TPA) in the presence of N-SWCNTS-GO-CE and CuO NPs. The morphology, structure and thermal properties of the CPA/N-SWCNTS-GO-CE/CuO nanocomposite were investigated using various techniques, including FTIR, XRD, RAMAN, SEM, MAP, EDX, TEM, TGA and DTG. Therefore, CPA/N-SWCNTS-GO-CE/CuO nanocomposite can be effectively used as a convenient and reusable adsorbent to remove hazardous dye from wastewater.