Figure 5

(A) Nitrogen adsorption–desorption isotherm of (a) raw attapulgite, (b) Sb₂Se₃-Sb₂O₃-attapulgite and (c) Sb₂Se₃/Sb₂O₃@attapulgite; (B) FTIR spectra of the samples: (a) raw attapulgite, (b) Sb₂Se₃sample, (c) Sb₂Se₃-Sb₂O₃-attapulgite and (d) Sb₂Se₃/Sb₂O₃@attapulgite.