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Low-Cost Solvothermal Synthesis of Hierarchical Structure γ-AlOOH and its Application to Remove Cr (VI), Methyl Orange and Congo Red from Contaminated Water

Author(s): Fancheng Meng, Qi Liang, Haishen Ren, Xiaorui Guo.

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Abstract:

Leaf-like hierarchical γ-AlOOH was prepared by a facile template-free solvothermal method at 150°C for 6 h, using aluminum nitrate (Al (NO3)39H2O) as aluminum source and a mixed water/ethanol solution as solvent. The obtained sample was characterized by X-ray powder diffraction (XRD), Scanning electron microscopy (SEM), Transmission electron microscopy (TEM) and N2 adsorption/ desorption technique. Experiment results indicated that the obtained leaf-like hierarchical γ-AlOOH exhibited a BET surface area of 190.3 m2/g and an average pore widths of 18.82 nm. The hierarchical γ-AlOOH showed excellent removal efficiency for Cr (VI), Methyl orange and Congo red with maximum adsorption capacity of 7.4 mg/g, 59.9 mg/g and 99.0 mg/g, respectively.

Keywords: Adsorption, γ-AlOOH, hierarchical structure, leaf-like, solvothermal method.

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Article Details

VOLUME: 11
ISSUE: 4
Year: 2015
Page: [434 - 438]
Pages: 5
DOI: 10.2174/1573413711666150202233901
Price: $58