Figure 4
From: Ultrahigh and kinetic-favorable adsorption for recycling urea using corncob-derived porous biochar

(a) FT-IR spectra of the CPB from different carbonization temperatures and (b) after urea absorption.
From: Ultrahigh and kinetic-favorable adsorption for recycling urea using corncob-derived porous biochar

(a) FT-IR spectra of the CPB from different carbonization temperatures and (b) after urea absorption.