title: Electrocatalysis of emodin at multi-wall nanotubes.
abstract: In this article, the electrochemical behavior of emodin at multi-wall carbon nanotube modified glassy carbon electrodes (MWNTs/GCE) was studied. The result showed that MWNTs/GCE had high electrocatalytic activity for emodin. And the electrocatalytic redox process was a two-charge-two-proton process. Diffusion coefficient (D(R)) of 8.403 x 10(-5) cm(2) s(-1) of emodin was obtained. Further experiments demonstrated that the oxidative peaks increased linearly with emodin concentrations in the range of 1.0 x 10(-6) to 1.0 x 10(-4) M with a limit of detection of 3.0 x 10(-7) M. This electrochemical method was accurate and reliable, therefore, it might provide a novel way for emodin detection.
authors.affiliation: Key Laboratory of Biomedical Photonics of Ministry of Education, Wuhan National Laboratory for Optoelectronics, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, Hubei, PR China, 430074.
authors.forename: Zhao-Hui
authors.initials: ZH
authors.lastname: Yin
authors.forename: Qiao
authors.initials: Q
authors.lastname: Xu
authors.forename: Yi
authors.initials: Y
authors.lastname: Tu
authors.forename: Qiu-Ju
authors.initials: QJ
authors.lastname: Zou
authors.forename: Jiu-Hong
authors.initials: JH
authors.lastname: Yu
authors.forename: Yuan-Di
authors.initials: YD
authors.lastname: Zhao
mesh_terms: D002384:Catalysis; D004058:Diffusion; D004563:Electrochemistry; D004642:Emodin / Q000737:chemistry*; D015394:Molecular Structure; D043942:Nanotubes / Q000737:chemistry*; D013053:Spectrophotometry
chemical_list: D004642:Emodin