wavelength of incident light

Why is Wavelength Important in Photocatalysis?

In photocatalysis, light is used to activate a catalyst. The energy of the light must match the band gap of the photocatalyst to excite electrons from the valence band to the conduction band. This excitation creates electron-hole pairs that drive chemical reactions. Therefore, selecting the appropriate wavelength is critical for maximizing the efficiency of the photocatalytic process.

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