Figure 1

Effect of pH on [C4mim][BF4] degradation. ([[C4mim][BF4]] = 1 mmol/L, [AC] = 0.15 g, [ZVZ] = 0.15 g and ultrasound frequency = 45 kHz at 30 °C).

Effect of pH on [C4mim][BF4] degradation. ([[C4mim][BF4]] = 1 mmol/L, [AC] = 0.15 g, [ZVZ] = 0.15 g and ultrasound frequency = 45 kHz at 30 °C).