“…13) Moreover, Cu 2 O is easy to make, abundant in nature, inexpensive, readily available, safe, and nontoxicity. 4,5,912) Due to the attractive properties of Cu 2 O has attracted significant interest for many applications such as photocatalysis, 47) gas sensing, 1,8) solar energy conversion. 4,5,9) Several methods have been described for the synthesis of Cu 2 O, such as solvothermal synthesis 13) solution-phase reduction, 1) the hydrothermal method, 3,14,15) SILAR method, 12) electro-deposition, 16) chemical bath deposition.…”