𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Potential-resolved electrochemiluminescence of Ru(bpy)32+/C2O42− system on gold electrode

✍ Scribed by Feng Li; Hua Cui; Xiang-Qin Lin

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
98 KB
Volume
17
Category
Article
ISSN
1522-7235

No coin nor oath required. For personal study only.

✦ Synopsis

The electrogenerated chemiluminescence of Ru(bpy) 3 2 /C 2 O 4 2À system on a pre-polarized Au electrode was studied using a potential-resolved electrochemiluminescence (PRECL) method. Two anodic ECL peaks were observed at 1.22 V (vs. SCE) (EP1), 1.41 V (vs. SCE) (EP2), respectively. The effects of the concentration of oxalate and Ru(bpy) 3 2 , adsorbed sulphur, CO 2 , O 2 , pH of the solution and pretreatment of the Au electrode on the two PRECL peaks were examined. The surface state of the pre-oxidized gold electrode was also studied using the X-ray photoelectron spectroscopy (XPS) technique. Moreover, comparative studies on i-E and I-E curves were carried out and a possible mechanism involving both the catalytic and the direct electro-oxidation pathways was proposed for the ECL of Ru(bpy) 3 2 /C 2 O 4 2À system. EP1 is attributed to the Ru(bpy) 3 2/3 reaction catalysed by C 2 O 4 2À to generate Ru(bpy) 3 2* . EP2 is likely because C 2 O 4 2À was oxidized at the electrode to form CO 2 À . , followed by reaction with Ru(bpy) 3 3 to generate Ru(bpy) 3 2* .

📜 SIMILAR VOLUMES

Electrochemiluminescence Behavior of Ru(
Electrochemiluminescence Behavior of Ru(bpy)32+/Carbofuran System on an Electrically Heated Microelectrode Chip
✍ Ruihong Ye; Xiaoping Chen; Bin Qiu; Zhenyu Lin 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 251 KB

## Abstract An electrically heated microelectrode chip (HMEC) was designed and the Ru(bpy)~3~^2+^/carbofuran electrochemiluminescence (ECL) systems were applied to characterize the performance of the HMEC. The ECL intensities increase at elevated electrode temperature, and the detection limit at 60

Electrochemiluminescence detection of me
Electrochemiluminescence detection of methamphetamine based on a Ru(bpy)32+-doped silica nanoparticles/Nafion composite film modified electrode
✍ Zhimin Cai; Zhijie Lin; Xiaomei Chen; Tiantian Jia; Ping Yu; Xi Chen 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 538 KB

## Abstract An electrochemiluminescence (ECL) approach for methamphetamine determination was developed based on a glassy carbon electrode modified with a Ru(bpy)~3~^2+^‐doped silica nanoparticles/Nafion composite film. The monodispersed nanoparticles, which were about 50 nm in size, were synthesize