The chemical structures and properties of the four acid dyes were depicted inTable 1. CTMAB, NaOH, HCl and AgNO3were purchased from Sinopharm Chemical Reagent Beijing Co., Ltd, China. All reagents were analytical grade and used as received.
The chemical structures and properties of the four acid dyes were depicted inTable 1. CTMAB, NaOH, HCland AgNO3were purchased from Sinopharm Chemical Reagent Beijing Co., Ltd, China. All reagents were analytical grade and used as received.