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Keggin型PW_(11)O_(39)Mn(II)(H_2O)^(5+)的合成、表征及电化学性质 被引量：2

Synthesis, Characterization and Electrochemical Properties of Keggin-type Mn-substituted Heteropolyanion PW_(11)O_(39)Mn(II)(H_2O)^(5+)
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摘要 在中性水溶液中合成了Keggin型锰取代磷钨杂多阴离子PW11O39Mn(II)(H2O)5-,并进行了IR、UV-vis和循环伏安表征.实验结果表明,PW11O39Mn(II)(H2O)5-在700～1100cm-1的指纹区内有5个特征振动吸收峰,分别对应于P-Oa、W=Od、W-Ob-W和W-Oc-W的反对称伸缩振动吸收,其中P-Oa的振动吸收分裂成2个峰.在200nm和252nm处有两个很强的紫外吸收;在400～700nm的可见光区有一个连续的吸收带.在循环伏安图中除了2对W-O骨架波之外,还有两对Mn的氧化-还原波,其电化学性质与溶液的pH有关. Keggin-type Mn （II）-substituted heteropolyanion PW11O39Mn （II）（H2O）^5-was synthesized in neutral aqueous solution and characterized by IR, UV-vis and cyclic voltammetry. Experimental results showed that in the 700-1100 cm-1 fingerprint area PW11O39Mn （II）（H2O）^5-exhibits five characteristic absorption peaks, corresponding to the anti-symmetric stretching vibration of P-Oa,W = Od,W-Ob-W and W-Oc-W, respectively, in which the vibration absorption of P-Oa splits into two peaks. PW11O39Mn （II）（H2O）^5-has two strong UV absorptions at near 200 nm and 252 nm and a continuous visible absorption band in the district of 400～700 nm. In addition to two pairs of W-O skeleton-waves, two pairs of Mn redox waves appear in the cyclic voltammograms. The electrochemical properties of the two pairs of Mnwaves are related to the solution pH.
作者 张红丹 李娜 焦贵省 王旭裕 王成龙 彭全明 华英杰 王崇太
机构地区 海南师范大学化学化工学院
出处 《海南师范大学学报（自然科学版）》 CAS 2010年第2期176-180,共5页 Journal of Hainan Normal University（Natural Science）
基金 国家大学生创新项目(091165820)
关键词 锰取代磷钨杂多阴离子 红外光谱 紫外可见光谱 循环伏安 Mn（II）-substituted heteropolyanion IR UV-vis cyclic voltammetry
分类号 O64 [理学—物理化学]
  • 相关文献

参考文献15

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共引文献10

同被引文献28

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引证文献2

二级引证文献4

海南师范大学学报（自然科学版）
2010年 第2期

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