Evaluation and Optimization to Recycle Used TiO₂ Photoelectrode for Dye-Sensitized Solar Cells

Table 1

pH values of desorption agents.

	1 M	10^−2 M	5×10^−3 M	10^−3 M	10^−5 M
NaOH	13.00	12.39	12.29	11.59	7.55
CH3COONa	8.50	7.71	7.62	7.6	6.52
HCl	0.43	2.12	2.37	2.93	4.99
CH3COOH	2.98	4.13	4.20	4.39	5.30