Synthesis and sonocatalytic property of rod-shape Sr(OH)(2)center dot 8H(2)0
Synthesis and sonocatalytic property of rod-shape Sr(OH)(2)center dot 8H(2)0
复制标题
棒状Sr(OH)(2)中心点8H(2)0的合成及声催化性能
DOI：
10.1016/j.ultsonch.2014.01.004
复制
发表时间：
2014
影响因子：
8.4
通讯作者：
Sun Donglan
中科院分区：
文献类型：
--
作者：
Song Limin;Li Yamiao;He Peizhi;Zhang Shujuan;Wu Xiaoqing;Fang Sheng;Shan Juanjuan;Sun Donglan
采用简易沉淀法制备了一种新型棒状声催化剂Sr（OH）2·8H 2 O，并通过X射线粉末衍射、透射电镜、傅里叶变换红外光谱和紫外-可见吸收光谱等手段对其进行了表征。以罗丹明B（RhB）为模型底物，在不同条件下进行了超声降解实验，结果表明，Sr（OH）2·8H 2 O具有较强的超声催化作用。总有机碳实验表明Sr（OH）2·8H 2 O具有大量的有机碳矿化作用。考察了催化剂用量、罗丹明B初始浓度和超声能量对降解的影响，该催化剂重复使用5次，活性无明显损失。此外，有效的降解能力归因于产生闪光/能量的超声空化，所述闪光/能量产生自由基（例如，自由基dotOH）具有高氧化活性。
A novel rod-shape sonocatalyst Sr(OH)2·8H2O was prepared by a facile precipitation method, and characterized by X-ray powder diffraction, transmission electron microscopy, Fourier transform infrared spectroscopy and UV–vis absorption spectroscopy. Comparative sonocatalytic degradation experiments were carried out in different conditions under ultrasonic irradiation by using rhodamine B (RhB) as the model substrate, indicating that Sr(OH)2·8H2O was highly sonocatalytic. Total organic carbon experiment demonstrated Sr(OH)2·8H2O with mass mineralization of organic carbon. The effects of catalyst amount, initial RhB concentration and ultrasonic energy of degradation were investigated, and the sonocatalyst could be reused 5 times without significant loss of activity. Furthermore, the potent degrading capability was ascribed to ultrasonic cavitation producing flash light/energy which generated radicals (e.g.,radical dotOH) with high oxidation activity.