Effect of Modified MnO2 Anodes on the Electrolytic Effect of Doxycycline Hydrochloride

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2022-11-23 DOI:10.1007/s12678-022-00796-6

Feng Ye, Jianhua Wang, Jiqing Bao

{"title":"Effect of Modified MnO2 Anodes on the Electrolytic Effect of Doxycycline Hydrochloride","authors":"Feng Ye, Jianhua Wang, Jiqing Bao","doi":"10.1007/s12678-022-00796-6","DOIUrl":null,"url":null,"abstract":"<div><p>To effectively degrade antibiotics, a series of MnO<sub>2</sub> modified electrodes were prepared by using a thermal decomposition method in this study. The corrosion resistance of the coated electrodes was evaluated by characterizing the microscopic morphology of the electrodes using scanning electron microscopy (SEM). Moreover, electrochemical tests, including cyclic voltammetry (CV) curves, linear sweep voltammetry (LSV) curves, as well as alternating-current (AC) electrochemical impedance spectroscopy (EIS), were applied to study the electrocatalytic ability of the electrode for the degradation of doxycycline hydrochloride in simulated wastewater. Based on the findings, the MnO<sub>2</sub>/CuO-mesoporous silica (SBA)-15 electrode displayed a long lifetime and excellent catalytic performance. The peroxynitrite (PMS) was further combined with above electrodes to construct an electrocatalytic oxidation (EC) system for the removing of doxycycline hydrochloride from wastewater. Under optimized conditions (current density of 30 mA/cm<sup>2</sup>, initial pH of 5, PMS dosing of 350 mg/L), the MnO<sub>2</sub>/CuO-SBA-15/PMS system can remove 79.44% doxycycline hydrochloride (initial concentration of 20 mg/L) after 180 min of electrolysis, 24.71% higher than that in the MnO<sub>2</sub>/PMS system.</p><h3>Graphical Abstract</h3>\n <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\n </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 2","pages":"315 - 324"},"PeriodicalIF":2.7000,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-022-00796-6.pdf","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electrocatalysis","FirstCategoryId":"92","ListUrlMain":"https://link.springer.com/article/10.1007/s12678-022-00796-6","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 1

Abstract

To effectively degrade antibiotics, a series of MnO₂ modified electrodes were prepared by using a thermal decomposition method in this study. The corrosion resistance of the coated electrodes was evaluated by characterizing the microscopic morphology of the electrodes using scanning electron microscopy (SEM). Moreover, electrochemical tests, including cyclic voltammetry (CV) curves, linear sweep voltammetry (LSV) curves, as well as alternating-current (AC) electrochemical impedance spectroscopy (EIS), were applied to study the electrocatalytic ability of the electrode for the degradation of doxycycline hydrochloride in simulated wastewater. Based on the findings, the MnO₂/CuO-mesoporous silica (SBA)-15 electrode displayed a long lifetime and excellent catalytic performance. The peroxynitrite (PMS) was further combined with above electrodes to construct an electrocatalytic oxidation (EC) system for the removing of doxycycline hydrochloride from wastewater. Under optimized conditions (current density of 30 mA/cm², initial pH of 5, PMS dosing of 350 mg/L), the MnO₂/CuO-SBA-15/PMS system can remove 79.44% doxycycline hydrochloride (initial concentration of 20 mg/L) after 180 min of electrolysis, 24.71% higher than that in the MnO₂/PMS system.

Graphical Abstract

Abstract Image

查看原文本刊更多论文

改性二氧化锰阳极对盐酸多西环素电解效果的影响

为了有效降解抗生素，本研究采用热分解法制备了一系列MnO2修饰电极。利用扫描电子显微镜(SEM)对涂层电极的微观形貌进行表征，评价涂层电极的耐腐蚀性能。通过循环伏安法(CV)曲线、线性扫描伏安法(LSV)曲线和交流电化学阻抗谱(EIS)等电化学测试，研究了该电极对模拟废水中盐酸多西环素的电催化降解能力。研究结果表明，MnO2/ cuo介孔二氧化硅(SBA)-15电极具有较长的使用寿命和优异的催化性能。再将过氧亚硝酸盐(PMS)与上述电极结合，构建电催化氧化(EC)系统，用于去除废水中的盐酸多西环素。在优化条件下(电流密度为30 mA/cm2，初始pH为5,PMS投加量为350 mg/L)，电解180 min后，MnO2/CuO-SBA-15/PMS体系对盐酸强力霉素(初始浓度为20 mg/L)的去除率为79.44%，比MnO2/PMS体系提高了24.71%。图形抽象

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.