磷钼酸
石墨
循环伏安法
化学
阳极
扫描电子显微镜
电化学
核化学
伏安法
电极
化学工程
材料科学
催化作用
有机化学
复合材料
物理化学
工程类
作者
Soheil Aber,Zeynab Yaghoubi,Mahmoud Zarei
出处
期刊:Chemosphere
[Elsevier]
日期:2016-10-01
卷期号:161: 422-428
被引量:3
标识
DOI:10.1016/j.chemosphere.2016.07.030
摘要
A new phosphomolybdic acid (PMA)/Graphite surface was prepared based on electrostatic interactions between phosphomolybdic acid and graphite surface. The PMA/Graphite was characterized by cyclic voltammetry (CV) analysis and scanning electron microscope (SEM). SEM images showed that the phosphomolybdic acid particles were well stabilized on the graphite surface and they were evidenced the size of particles (approximately 10 nm). The CV results not only showed that the modified surface has good electrochemical activity toward the removal of the dyestuff, but also exhibits long term stability. The PMA/Graphite was used as a photoanode for decolorization of Reactive Yellow 39 by photoelectrocatalytic system under UV irradiation. The effects of parameters such as the amount of phosphomolybdic acid used in preparation of PMA/Graphite surface, applied potential on anode electrode and solution pH were studied by response surface methodology. The optimum conditions were obtained as follows: dye solution pH 3, 1.5 g of immobilized PMA on graphite surface and applied potential on anode electrode 1 V. Under optimum conditions after 90 min of reaction time, the decolorization efficiency was 95%.
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