The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 22 4 2023 02 20 The effect of precursor on the alumina ‎nanostructures synthesized by green method for ‎copper ions removal‏ ‏from industrial wastewater The effect of precursor on the alumina ‎nanostructures synthesized by green method for ‎copper ions removal‏ ‏from industrial wastewater 711 722 3316 10.47176/ijpr.22.4.11389 FA Maryam Aliannezhadi Faculty of Physics, Semnan University, Semnan, Iran 0000-0003-2372-2404 Zahra Gholizadeh Faculty of Physics, Semnan University, Semnan, Iran Mehrdad Ghominejad Faculty of Physics, Semnan University, Semnan, Iran Fatemeh Shariatmadar Tehrani Faculty of Physics, Semnan University, Semnan, Iran Journal Article 2022 01 11 Copper is one of the very harmful metals for human’s life, may lead to headaches, depression and learning disabilities, which is a very vital issue. Moreover, this metal is not biodegradable and remains in nature for a long time. Metal oxide nanoparticles with high surface adsorption can be used as a suitable option for copper removal from factory effluents. In this paper, aluminum oxide nanoparticles are proposed, synthesized and investigated as nanoparticles with high adsorption. Also, the synthesis is based on two different precursors (aluminum chloride and aluminum nitrate) and the effect of precursor is investigated on the structural and optical properties of alumina nanoparticles. Studies show that alumina nanoparticles are formed with both precursors, and they are amorphous. However, the choice of precursor has a significant effect on the size of the nanoparticles and the optical properties of these alumina nanoparticles. In addition, the study of the effect of precursor selection on the copper cation removal at pH = 5.7 shows that alumina nanoparticles synthesized with aluminum nitrate have better copper removal efficiency than the sample synthesized with aluminum chloride precursor and the removal of copper contaminants (20 ppm) with this alumina nanoparticles reaches 91% in 180 minutes, which indicates the excellent performance of synthesized nanoparticles in copper removal. Copper is one of the very harmful metals for human’s life, may lead to headaches, depression and learning disabilities, which is a very vital issue. Moreover, this metal is not biodegradable and remains in nature for a long time. Metal oxide nanoparticles with high surface adsorption can be used as a suitable option for copper removal from factory effluents. In this paper, aluminum oxide nanoparticles are proposed, synthesized and investigated as nanoparticles with high adsorption. Also, the synthesis is based on two different precursors (aluminum chloride and aluminum nitrate) and the effect of precursor is investigated on the structural and optical properties of alumina nanoparticles. Studies show that alumina nanoparticles are formed with both precursors, and they are amorphous. However, the choice of precursor has a significant effect on the size of the nanoparticles and the optical properties of these alumina nanoparticles. In addition, the study of the effect of precursor selection on the copper cation removal at pH = 5.7 shows that alumina nanoparticles synthesized with aluminum nitrate have better copper removal efficiency than the sample synthesized with aluminum chloride precursor and the removal of copper contaminants (20 ppm) with this alumina nanoparticles reaches 91% in 180 minutes, which indicates the excellent performance of synthesized nanoparticles in copper removal. https://ijpr.iut.ac.ir/article_3316_8ce5d989374d216a867cdc8871484b43.pdf