咪唑基阳离子-Strandberg型钼磷酸盐的合成及电催化活性探讨

Synthesis and electrocatalytic activities of imidazolyl cation-strandberg-type phosphomolybdates

利用常规和水热合成法得到2个咪唑基阳离子-Strandberg型钼磷酸盐的有机-无机杂化化合物,H8(H2biim)5[(HPO4)2Mo5O15]2.4H2O(1)和H4(Hbeim)5[(HPO4)2Mo5O15].4H2O(2)(H2biim=2,2′-联咪唑;Hbeim=苯并咪唑).通过IR光谱、ICP、元素分析、CV和单晶X-射线衍射分析进行了表征,并研究了该杂化材料对H2O2还原的电催化活性.结果表明,化合物1和2在酸性条件下对H2O2具有电催化还原作用.分子间通过多阴离子单元与有机物基团间的静电作用、N—H…O和O—H…O氢键作用形成无限的三维网络结构.

Two organic-inorganic hybrid compounds based on imidazolyl cation and strandberg-type phosphomolybdate,H8（H2biim）5[（HPO4） 2Mo5O15]2 · 4H2O（1） and H4（Hbeim）5[（HPO4）2Mo5O15] · 4H2O（2）（H2biim = 2,2′-biimidazole;Hbeim = benzimidazole） have been synthesized under routine synthetic method and hydrothermal synthesis.They have been characterized by IR spectroscopy,ICP,elemental analysis,CV and single-crystal X-ray diffraction.The results reveal that compounds 1 and 2 have electrocatalytic activities toward the reduction of hydrogen peroxide under acidic conditions.The 3D frameworks were constructed by the electrostatic forces between polyoxoanions and organic groups and the extensive H-bonding interactions of N—H…O and O—H…O among molecules.