Yangping Wen

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Questions related from Yangping Wen

Tafel plots for charge transfer coefficient?

Hello, everyone! We studied nanomaterials for electrochemical simultaneous sensing of three metabolites, reviewer asked us to provide Tafel plots with operating parameters. In literature, Tafel...

16 August 2019 3,030 2 View

The values of deterogeneous electron transfer rate constant (Ket) or apparent heterogeneous rate constant (Kapp) of different modified electrode

Ket =RT/n2F2ActC In the above equation, Ket is heterogeneous electron transfer rate constant, A is a geometric area (cm2), R is gas constant (J K-1mol-1), T is temperature (K), F is Faraday...

10 August 2017 4,813 3 View

Nernst equation for irreversible electrode reaction processes (single oxidation or reduction voltammetric peak)

According to the Nernst equation: E =E0 +RT/naF ln[O]/[R] −2.303mRT/naF pH, where m is the number of protons participating in the electrochemical reaction, which could be determined from slopes of...

09 July 2017 2,232 13 View

The values of the apparent diffusion coefficient (D) or catalytic rate constant (k) of analytes at different modified electrodes

Generally, the apparent diffusion coefficient (D) can be evaluated by Cottrell equation I = nFAD1/2c0 π-1/2 t-1/2, Where c0 is the catalyst concentration (M), t is the time elapsed (s) and A is...

13 June 2017 9,644 8 View

What mechanism causes the left - right asymmetry of DPV oxidation peak shape for the same target analysis using different nanomaterials

In the electrocatalytic oxidation of organic analytes, we found the left-right asymmetry of DPV oxidation peak shape for the same target analysis using different nanomaterials. In some cases, the...

01 January 1970 8,426 0 View