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作为一类具有较高生物活性的物质,药物及个人护理品对环境的污染引起人们越来越多的关注.对乙酰氨基酚和伐昔洛韦是两种使用广泛的药物,由于其潜在的对人类健康和生态安全的威胁而逐渐成为研究热点.而电化学辅助光氧化技术因其具备能够高效处理难降解化学品的优点而得到广泛使用.本文合成了纳米多孔二氧化钛电极,研究了电化学还原处理对纳米多孔二氧化钛电极辅助光电化学降解对乙酰氨基酚和伐昔洛韦的影响.使用扫描电镜和色散谱技术对合成的纳米多孔二氧化钛电极的形态和元素组成进行了表征.循环伏安法、莫特-肖特基曲线、紫外-可见分光光度计和总有机碳分析仪被用来研究对乙酰氨基酚和伐昔洛韦的光电化学降解过程.结果显示,对乙酰氨基酚和伐昔洛韦的光化学降解和电化学降解过程非常缓慢,在研究的时间范围内其浓度未见明显变化,因此可以忽略不计.但是对乙酰氨基酚和伐昔洛韦的光电化学降解速度比较快,与未经处理的纳米多孔二氧化钛电极相比,经过电化学还原处理的电极可以使对乙酰氨基酚和伐昔洛韦的光电化学降解分别提高86.96%和53.12%.这可能是由于在电化学还原处理过程中生成了Ti(3+),Ti~(2+)和氧空位以及导电性的提高.还研究了温度对对乙酰氨基酚和伐昔洛韦光电化学降解的影响,随着温度升高,对乙酰氨基酚和伐昔洛韦的光电化学降解速率增大.
As a class of substances with higher biological activity, the environmental pollution caused by drugs and personal care products has drawn more and more attention.Paracetamol and valacyclovir are two widely used drugs because of their potential Which has become a research hotspot for human health and ecological safety.Alectrochemical assisted photooxidation technology has been widely used because of its advantages of being able to handle refractory chemicals efficiently.In this paper, nanoporous titanium dioxide electrode was synthesized, and electrochemical The photocatalytic degradation of acetaminophen and valacyclovir with nano-porous titania electrodes was investigated by reduction treatment.The morphology and elemental composition of the prepared nanoporous titania electrodes were characterized by scanning electron microscopy (SEM) and dispersive spectroscopy , Mott-Schottky curves, UV-Vis and Total Organic Carbon Analyzers were used to study the photo-electrochemical degradation of acetaminophen and valacyclovir The results showed that acetaminophen and alveolar Lowe’s photochemical degradation and electrochemical degradation process is very slow, in the study time range of its concentration was not significantly changed So negligible, but the acetaminophen and valacyclovir photoelectrochemical degradation rate faster than untreated nanoporous titanium dioxide electrode, the electrochemical reduction of the electrode can make acetaminophen And photo-electrochemical degradation of valacyclovir by 86.96% and 53.12%, respectively, which may be attributed to the formation of Ti (3 +), Ti 2+ and oxygen vacancies and the increase of conductivity during the electrochemical reduction process The effect of temperature on the photoelectrochemical degradation of acetaminophen and valacyclovir was also studied, and the photoelectrochemical degradation rates of acetaminophen and valacyclovir increased with increasing temperature.