Can anyone help me to calculate photodecomposition rate constant (k) based on the number of active sites on the materiel using a pseudo–first order reaction kinetic model
Thanks in-advance
we sometime calculate the decomposition rate to the time, like the k--t. Or the C-T.
you can calculate the photodecomposition rate constant (k) based on amount of material which at same time give you indication on the number of active sites on material. this my opinion to make the calculation understand and easier.
Dear Chen Cheng and Muneer M. Ba-Abbad thank you for your valuable information.
In one of our on-going manuscript the following content are given
To quantitatively measure the photocatalytic efficiency, the photodecomposition rate constant (k) of RhB over the AgI nanostructures and AgI-GAs were calculated from a pseudo–first order reaction kinetic model, i.e., ln(Co/Ct) = kt, where C0 is the initial RhB concentration (mg·L−1), Ct is the RhB concentration in the aqueous solution at time t (mg·L−1), and k is the apparent pseudo–first order rate constant (min−1). The calculated apparent k values for AgI, AgI-1, AgI-2, AgI-3, AgI-4, and AgI-5 nanocomposites are 0.043, 0.278, 0.291, 0.260, 0.272, and 0.111 min−1, respectively. The highest photocatalytic performance was achieved with the AgI-2 nanocomposite: Its k value is about 6.76 times higher than that of the bare AgI nanoparticles. This is clearly evidence of the significant synergistic effect of graphene coupling at enhancing the photocatalytic efficiency.
But the reviewer raise the question as follows
They reported the catalytic performances of RhB degradation on the AgI-GA catalysts. They calculated reaction rates which should be based on the number of active sites on the materials. Detail explanation about the number of active sites on the composite is missing
Here I dont understand what it mean "the number of active sites on the composite"?
Looking for your valuable responses
Dear Prof. C.P. Huang, thank you for your valuable information.
Now I understand how to calculate the constants.
Thank you very much.
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