Photocatalytic degradation of malachite green by TiO_2 assisted with tartaric acid | 酒石酸协同下TiO_2光催化降解水溶性染料孔雀石绿的研究
2011
Li Hui, Nanjing Agricultural University, Nanjing(China), College of Sciences | Song Lifang, Nanjing Agricultural University, Nanjing(China), College of Sciences | Wang Yajun, Nanjing Agricultural University, Nanjing(China), College of Sciences
Chinese. 摘 要：研究了酒石酸协同下TiO2光催化降解水溶性染料孔雀石绿的影响因素、降解反应动力学以及作用机制。结果表明：酒石酸对TiO2降解孔雀石绿有明显的协同作用,相同试验条件下,3种不同光源对孔雀石绿的降解效果大小依次为：紫外光、模拟日光、可见光。孔雀石绿的光催化降解反应呈一级反应动力学特征。用苯作为羟基自由基（.OH）捕集剂,通过高效液相色谱仪（HPLC）检测苯酚,间接地测定了反应中间产物.OH。
Show more [+] Less [-]English. The affecting factors and mechanism of photocatalytic degradation of malachite green by TiO2 assisted with tartaric acid were investigated.The results demonstrated that tartaric acid could markedly enhance photocatalytic degradation of malachite green by TiO2.Under the same conditions,the order of the removal efficiency of malachite green in three light sources was ultraviolet light,mimic solar light,visible light.The degradation of malachite green obeyed the first-order kinetics.The intermediate material（・OH）was indirectly measured by HPLC using phenol as a probe and beneze as a scavenger for ・OH.
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