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Porous Al-doped ZnO rods with selective adsorption properties

Abstract : Al-doped ZnO (ZnO:Al) rods with Al doping varying from 0 to 20% were successfully prepared via a solvothermal method. ZnO:Al rods exhibit the hexagonal wurtzite crystalline structure and their length were found to decrease from 127 to 12 nm when increasing the dopant percentage from 0 to 20%. Simultaneously, their specific surface area increased from ca. 21 to 82 m2/g. ZnO:Al (20%) rods exhibit high adsorption capability towards some negatively charged dyes like Orange II, Acid red 88 or Alizarin, which was attributed to the high specific surface of ZnO:Al rods and to the defects induced by the Al doping as demonstrated by XRD and Raman spectroscopy.
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Submitted on : Tuesday, March 14, 2017 - 10:09:29 AM
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Bilel Chouchene, Tahar Ben Chaabane, Kevin Mozet, Emilien Girot, Serge Corbel, et al.. Porous Al-doped ZnO rods with selective adsorption properties. Applied Surface Science, Elsevier, 2017, 409, pp.102-110. ⟨10.1016/j.apsusc.2017.03.018⟩. ⟨hal-01488976⟩



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