文献名Self-Ordered Anodic Aluminum Oxide Formed by H2SO4 Hard Anodization
“After the anodization, the remaining aluminum substrate was selectively removed by a wet-chemical etching step with a solution containing 3.4 g of CuCl2 · 2H2O, 100 mL of 37 wt % HCl, and 100 mL of H2O. ” 摘自于文章最后的实验部分。