CAJ | 학술논문

氧化电解水是一种高效、环保的杀菌剂,在医疗卫生、食品安全和农业生产方面有着广泛的应用.但目前氧化电解水制备过程中,缺少对关键电极材料的研究,没有建立电极材料与杀菌活性因子(HClO)之间的关系.采用热分解法制备 RuO 2-SnO 2氧化物合金电极.通过 XRD 表征可以看出其晶型为典型的金红石型结构,进一步通过循环伏安(CV)表征证明其表面为典型的 RuO 2电化学特征,没有 SnO 2电化学特征.在此基础上,利用线性伏安(LSV)技术分别考察了 RuO 2-SnO 2的析氯极化曲线和析氧极化曲线,研究表明电流密度为70 mA/cm2时,RuO 2-SnO 2电极的析氯析氧电势差为368 mV,而 RuO 2为278 mV,提高了析氯反应选择性.在此基础上,对 RuO 2-SnO 2电极在实际制备氧化电解水过程中的电解效率,有效氯含量、次氯酸含量及强化实验寿命进行了考察.结果表明,RuO 2-SnO 2电极比 RuO 2电极氯离子电解效率提高了11．34％,有效氯含量提高了35．57％,次氯酸含量提高了33．62％,电极强化实验寿命提高了14倍.最后,通过 SEM 表征和电化学孔隙率的计算,表明RuO 2-SnO 2电极表面较平整,内部孔隙率大,所以使电解液不容易渗透到电极内部,而使电极的耐腐蚀性和使用寿命都将得到提高.
양화전해수시일충고효、배보적살균제,재의료위생、식품안전화농업생산방면유착엄범적응용.단목전양화전해수제비과정중,결소대관건전겁재료적연구,몰유건립전겁재료여살균활성인자(HClO)지간적관계.채용열분해법제비 RuO 2-SnO 2양화물합금전겁.통과 XRD 표정가이간출기정형위전형적금홍석형결구,진일보통과순배복안(CV)표정증명기표면위전형적 RuO 2전화학특정,몰유 SnO 2전화학특정.재차기출상,이용선성복안(LSV)기술분별고찰료 RuO 2-SnO 2적석록겁화곡선화석양겁화곡선,연구표명전류밀도위70 mA/cm2시,RuO 2-SnO 2전겁적석록석양전세차위368 mV,이 RuO 2위278 mV,제고료석록반응선택성.재차기출상,대 RuO 2-SnO 2전겁재실제제비양화전해수과정중적전해효솔,유효록함량、차록산함량급강화실험수명진행료고찰.결과표명,RuO 2-SnO 2전겁비 RuO 2전겁록리자전해효솔제고료11．34％,유효록함량제고료35．57％,차록산함량제고료33．62％,전겁강화실험수명제고료14배.최후,통과 SEM 표정화전화학공극솔적계산,표명RuO 2-SnO 2전겁표면교평정,내부공극솔대,소이사전해액불용역삼투도전겁내부,이사전겁적내부식성화사용수명도장득도제고.
Electrolyzed oxidizing water (EOW),as an innovative disinfectant characterized by its high efficien-cy,broad antimicrobial spectrum,and non-toxic residues,has been broadly used in health care,food safety, and agricultural production.But in the process of EOW preparation,there are lack of research of the key elec-trode material,and it was not to establish the relationship between the electrode materials and bactericidal ac-tivity factor(HClO).RuO 2-SnO 2 anode was prepared by thermal decomposition method.It could be seen that the crystal type of RuO 2-SnO 2 was the typical rutile structure by X-ray diffraction (XRD).The electrode surface exhibited the electrochemical characteristics of RuO 2 through cyclic voltammetry(CV)without the characteris-tics of SnO 2 .The polarization curve of chloride evolution and oxygen evolution were further studied by Linear sweep voltammetry(LSV).With the current density of 70 mA/cm2 ,the potential difference between chloride e-volution and oxygen evolution was 368mV for RuO 2-SnO 2 electrode,but 278 mV for RuO 2 electrode.It sug-gests that the selectivity of chlorine evolution reaction of RuO 2-SnO 2 electrode is higher than that of RuO 2 elec-trode.On this basis,electrolysis efficiency,available chlorine content,hypochlorous acid content and the accel-eration life test of RuO 2-SnO 2 electrode were all studied in the actual preparation process of electrolyzed oxidi-zing water.The results showed that compared with RuO 2 ,the electrolysis efficiency of RuO 2-SnO 2 electrode in-creased by 1 1.34% available chlorine content increased by 35.57% and hypochlorous acid content increased by 33.62%.And,what’s more,the acceleration life is increased 14 fold.Finally,by SEM characterization and electrochemical porosity calculations of RuO 2-SnO 2 electrode,it had suggested that the electrode surface is smooth and the internal porosity is large.So it can hinder the electrolyte penetration into the inner of electrode, enhance the electrode corrosion resistance,and improve the service life.