Citation: ZHANG Yan-Ru, LIANG Du-Juan, WU Min, ZHAO Xin-Hua, YANG Xiao-Jing. Dispersion of ZnAl-LDHs Nanosheets by Cellulose to Improve Adsorption Capacity toward Phosphate[J]. Chinese Journal of Inorganic Chemistry, ;2013, 29(3): 628-634. doi: 10.3969/j.issn.1001-4861.2013.00.069 shu

Dispersion of ZnAl-LDHs Nanosheets by Cellulose to Improve Adsorption Capacity toward Phosphate

1.
1. College of Chemistry, Beijing Normal University, Beijing 100875, China;

Received Date: 16 August 2012
Available Online: 30 September 2012
Fund Project: 北京市自然科学基金(No.2112022) (No.2112022)国家自然科学基金(NSFC51172247, 5100381和20904064 )资助项目。 (NSFC51172247, 5100381和20904064 )

In order to take advantage of large specific surface area, the nanosheets obtained by delaminating ZnAl layered double hydroxides (ZnAl-LDHs) in formamide were stabilized by cellulose in aqueous solution. The structure, composition and morphology of the resulting nanocomposites of ZnAl-LDHs nanosheets and carboxymethyl cellulose were characterized by XRD, FTIR, SEM, TEM, C, H, and N elemental analysis, ICP and ion chromatograph techniques. In addition, the performance of ZnAl-LDHs nanosheets on phosphorus removal was investigated. The results show that the nanocomposites have high selectivity and adsorption capacity toward phosphate. The selectivity sequences are as follows: H₂PO₄^->SO₄^2->Cl^->NO₃^-. The maximum adsorption capacity could reach 40 mg of P per gram of LDHs approximately.
- layered compounds;nanosheets;colloids;adsorption;phosphorus
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沈阳化工大学材料科学与工程学院沈阳 110142