Effect of hexamethylene tetramine (HMTA) surfactant on the structural characteristics and photocatalytic activity of Cu-ZnO nanoparticle materials fabricated by the hydrothermal method . Vietnam j. catal. adsorp. [Internet]. 2021 Oct. 30 [cited 2024 Nov. 18];10(3):34-9. Available from: https://jca.edu.vn/index.php/jca/article/view/2021.047