2.1.3. Synthesis of BiOCl/NaNbO3 Composites

Different contents (1, 2, 3, 4 mmol) of NaNbO₃ (prepared in 2.1.1) were added into the 30 mL DI water and stirred for 0.5 h, and then, 5 mmol Bi(NO₃)₃·5H₂O and 5 mmol KCl were added into the solution and stirred for another 0.5 h. The above solution was transferred into a 50 mL Teflon-lined autoclave and reacted at 180 °C for 12 h. The corresponding composites were named as BN-1, BN-2, BN-3, BN-4.