“Study on Fabrication and investigation of the effects of copper salt precursor with different anions SO42-, Cl-, CH3COO- and NO3- on the structure and photocatalytic properties for decomposition of methyl orange dye of octahedral Cu2O nanoparticles”, Vietnam j. catal. adsorp., vol. 9, no. 3, pp. 112–117, Sep. 2020, doi: 10.51316/jca.2020.059.