The electrochemical behavior of cationic and anionic dye-clay modified electrodes

✍ Scribed by Shen Baoen; Peng Tuzhi; Wang Huawei

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 311 KB
• Volume: 39
• Category: Article
• ISSN: 0013-4686
• DOI: 10.1016/0013-4686(94)80096-0

✦ Synopsis

AhstractZationic dye clay modified electrodes and anionic dye clay modified electrodes showed different electrochemical behavior. Catonic dye clay modified electrodes prepared by a one step method did not exhibit voltammetric response while the anionic dye clay modifkd electrodes did. X-ray difIraction and spectrophotometric experiments suggested that most of the cationic dye adsorbed in interlamellar space charged negatively and strongly interacted with the clay. However, anionic dye did not enter the interlamellar space due to electrostatic repulsion and had no strong interaction with the clay.