Abstract

We report a study which exhibits for the first time the catalytic activity of LiMgPO₄ in the reaction of hydroquinone oxidation. The samples were synthesized by solid state reaction, glycerol-nitrate method and ultrasonic spray pyrolysis. It was proved that LiMgPO₄ makes the hydroquinone decomposition possible in the absence of irradiation and accelerates it under the action of light. It was determined that the lager is the specific surface area of the catalyst, the higher is the reaction rate constant. The high catalytic activity of LiMgPO₄ in the oxidation reaction was explained by the existence of defects on the LiMgPO₄ surface able to adsorb ions, radicals, etc. The UV–vis spectra clearly indicated the existence of defects. The results of voltammetric and NMR studies confirmed that the defective surface of LiMgPO₄ easily adsorbs molecular and ionic groups of different nature formed during sorption and electrolysis of water.

中文翻译：

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LiMgPO 4在对苯二酚分解中的光催化活性及相关的表面现象

摘要

我们报道了一项研究，该研究首次展示了LiMgPO ₄在对苯二酚氧化反应中的催化活性。通过固相反应，硝酸甘油法和超声喷雾热解合成样品。业已证明，LiMgPO ₄可以在没有照射的情况下使对苯二酚分解，并在光的作用下使其加速。已确定，较大的是催化剂的比表面积，反应速率常数越高。LiMgPO ₄在氧化反应中的高催化活性可以通过在LiMgPO ₄上存在缺陷来解释表面能够吸收离子，自由基等。紫外可见光谱清楚地表明了缺陷的存在。伏安法和NMR研究的结果证实，LiMgPO ₄的缺陷表面易于吸附在水的吸附和电解过程中形成的不同性质的分子和离子基团。