en Research Paper Research Paper <p style="text-align: justify;"><strong>ABSTRACT</strong><br> <span style="font-size:11pt"><span style="line-height:150%"><span style="unicode-bidi:embed"><span sans-serif="" style="font-family:Calibri,"><span style="font-size:12.0pt"><span style="line-height:150%"><span new="" roman="" style="font-family:" times="">In this paper, novel Nanohybrid CuO-Fe₃O₄/Zeolite nanocomposites (HCFZ NCs) have been synthesized to improve the adsorption capacity and activity for removing the Arsenic and Lead cations from the contaminated water solutions. The nanohybrid 4, 10, and 20 -HCFZ NC samples were investigated by XRD, FT-IR, TEM, FESEM, EDX, and BET. The characterization results of these catalysts confirmed the presence of CuO and Fe₃O₄ NPs in nanospherical shapes as Nanohybrid Cu and Fe oxides on the zeolite surface. Notably, the 10-HCFZ NC sample showed the highest removal efficiency of harmful metallic pollutants from the water in comparison to the prepared neat zeolite, 4-HCFZ NC, and 20-HCFZ NC samples, with a percentage removal of (97.9 %) for Pb ions and (93.5 %) for As ions within 30 minutes (100 ppm). According to the adsorption isotherms results, R²values for the Langmuir isotherm were the highest, suggesting that the experimental results fit better the Langmuir isotherm model. Generally, according to the obtained results, there is a possibility of enhancing the efficiency of Nanohybrid CuO-Fe₃O₄/Zeolite NCs to remove Arsenic and Lead ions from polluted aqueous solutions.</span></span></span></span></span></span></span><br> &nbsp;</p> Zeolite,nanometal oxide,adsorption,nanoparticles,Nanohybrid CuO-Fe3O4 1 13 http://ijmse.iust.ac.ir/browse.php?a_code=A-10-4273-1&slc_lang=en&sid=1 Abdullah Alswata Alswat1978@gmail.com 1800319475328460018389 1800319475328460018389 No aDepartment of chemistry, Faculty of education and Applied Science -Arhab, Sana’a University, Yemenalswat1978@gmail.com Shaimaa Ali shaimaa_labeeb19@yahoo.com 1800319475328460018390 1800319475328460018390 No d Chemistry Department, Faculty of Science, Mansoura University, Mansoura , Egypt.shaimaa_labeeb19@yahoo.com Fares Alshorifi amgdfaress@gmail.com 1800319475328460018391 1800319475328460018391 Yes bDepartment of chemistry, Faculty of Science, University OF Saba Sheba region, Marb, YemencDepartment of chemistry, Faculty of Science, Sana’a University, Sana’a ,Yemen