CAJ | 학술논문

用硝酸锌水溶液作电解质,采用阴极电沉积法在玻碳电极上制备了具有光电化学活性的氧化锌(ZnO)薄膜.以ZnO膜电极为工作电极对4-石肖基酚进行了光电催化降解处理,系统研究了外加偏压、4-石肖基酚浓度、电解液浓度以及pH值对4-硝基酚在ZnO膜电极上的光电催化降解效果的影响.结果表明:在外加偏压为1.0V,电解液浓度为0.1mol/L,溶液为近中性条件(pH为6.3)时对0.05mmol/L的4-硝基酚2小时的降解效率达到了98.8%.
용초산자수용액작전해질,채용음겁전침적법재파탄전겁상제비료구유광전화학활성적양화자(ZnO)박막.이ZnO막전겁위공작전겁대4-석초기분진행료광전최화강해처리,계통연구료외가편압、4-석초기분농도、전해액농도이급pH치대4-초기분재ZnO막전겁상적광전최화강해효과적영향.결과표명:재외가편압위1.0V,전해액농도위0.1mol/L,용액위근중성조건(pH위6.3)시대0.05mmol/L적4-초기분2소시적강해효솔체도료98.8%.
ZnO thin film with photoelectrochemical activity was prepared by method of cathodic electrodeposition in a simple aqueous zinc nitrate solution. The ZnO film was utilized as working electrode to photoelectrocatalyze p-nitrophenol. Some influence parameters such as external bias potential, initial concentration of p-nitrophenol, electrolyte concentration and pH value on photoelectrocatalytic degradation of p-nitrophenol were systematically investigated. Results demonstrated that the photoelectrocatalytic degradation efficiency for 0.05mmol/L p-nitrophenol reached up to 98.8% under the condition of external bias potential of 1.0V, supporting electrolyte concentration of 0.1mol/L and solution at pH 6.3.