The rapid synthesis of the heteropolyoxometalate-pillared layered double hydroxide Zn2Al(OH)6[SiW11O39Co(H2O)]1/6 · 4H2O by the action of ultrasound |
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| Authors: | Hu Changwen Zhang Xu He Qinglin Wang Enbo Wang Shuangwei Guo Qingling |
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| Institution: | (1) Department of Chemistry, Northeast Normal University, Changchun, 130024, P.R, China |
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| Abstract: | The ion-exchange between the transition metal monosubstituted heteropolyoxometalate anion SiW11O39-Co(H2O)]6– and the anionic clay Zn2Al(OH)6NO3· xH2O by the action of ultrasound gave the heteropolyanion-pillared layered double hydroxide Zn2Al-(OH)6SiW11O39Co(H2O)]1/6·4H2O within 7 min. The product was characterized by powder X-ray diffraction, i.r. spectroscopy and elemental analysis. The results show that the gallery height of the complex is 1.00±0.02 nm and the heteropolyanion SiW11O39-Co(H2O)]6– entering the layer retains the integrity of the Keggin structure. Experimentally, the atomic ratio of each element in the formula is Zn:Al = 2.1:0.95 and Si:W:Co = 0.96:10.90:0.98. |
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