Oxalic acid leaching experiments were done in a total volume of 200 ml (s/L ratio of 70 g/L, 55 °C, 400 rpm & 60 min [31]) while the experiments with HCl were done at 20–50 ml scales. After the experiment, the solution was vacuum filtered using a Büchner funnel setup where ...
According to the preparing device, high-efficiency preparation of the oxalic acid solution for ITO etching is carried out, and impurities are not easily introduced. The concentrated supersaturated solution only needs to be diluted in a ratio under temperature control, no concentration detection is ...