شیمى کاربردى روز

شیمى کاربردى روز

تهیه الکترود Ti/SnO2-Sb/NSGCN-PbO2 به‌منظور حذف الکتروکاتالیستی سیپروفلوکساسین

نوع مقاله : مقاله علمی پژوهشی

نویسندگان
دانشکده شیمی، دانشگاه سمنان، سمنان، ایران
چکیده
در پژوهش حاضر، الکترود Ti/SnO2-Sb/NSGCN-PbO2 به روش ترسیب الکتریکی ساخته شد. جهت بررسی مورفولوژی سطح الکترود، تجزیه ترکیبات عنصری و بررسی خصوصیات الکتروشیمیایی الکترود از آنالیزهای میکروسکوپ الکترونی روبشی گسیل میدانی ((FESEM جفت شده با طیف‌سنج پراش انرژی پرتوی ایکس ((EDX، پراش اشعه ایکس ((XRD، ولتامتری روبشی خطی ((LSV، ولتامتری چرخه‌ای ((CV، کرونوپتانسیومتری ((CP و کرونوآمپرومتری ((CA استفاده شد. یافته‌ها نشان داد که الکترود Ti/SnO2-Sb/NSGCN-PbO2 دارای ذرات ریزتر، ساختار منسجم‌تر و یکنواخت‌تر، پتانسیل آزادسازی اکسیژن بالاتر، مقاومت انتقال بار کوچک‌تر، دانسیته جریان خوب و پایداری الکتروشیمیایی بسیار مطلوبی می‌باشد. در این مطالعه عملکرد الکترود Ti/SnO2-Sb/NSGCN-PbO2 در حذف آنتی‌بیوتیک سیپروفلوکساسین ((CIP مورد بررسی قرار گرفت. حذف الکتروشیمیایی CIP به روش اکسایش آندی توسط تولید رادیکال هیدروکسیل (OH֯) در سطح آند انجام شد. راندمان حذف CIP در 8/6=pH و دمای محیط پس از ۲۴۰ دقیقه مقدار 3/44% به دست آمد. همچنین میزان انرژی مصرفی kWh m-3368/0 به دست آمد. نتایج نشان می‌دهد که آند Ti/SnO2-Sb/PbO2 در حذف سیپروفلوکساسین و مصرف انرژی بهتر از Ti/SnO2-Sb/PbO2، Ti/PbO2 و Ti/SnO2-Sb عمل می‌کند.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

Preparation of Ti/SnO2-Sb/NSGCN-PbO2 Electrode for Electrocatalytic Removal of Ciprofloxacin.

نویسندگان English

Farideh Nabizadeh Chianeh
Shima Sheikh Mohammadi
Faculty of Chemistry, Semnan University, Semnan, Iran
چکیده English

In the present study, Ti/SnO2-Sb/NSGCN-PbO2 electrode was fabricated by electrodeposition technique. The field emission scanning electron microscopy (FESEM) coupled to an energy dispersive X-ray (EDX) spectrometer, X-ray diffraction (XRD), linear scanning voltammetry (LSV), cyclic voltammetry (CV), chronopotentiometry (CP) and chronoamperometry (CA) analyzes were used to examine the surface morphology, the elemental composition analysis and electrochemical properties of the electrode. The findings showed that the Ti/SnO2-Sb/NSGCN-PbO2 electrode has a finer particles, a more compact and uniform structure, a higher potential for oxygen evolution, a smaller charge transfer resistance, a good current density and a more desirable electrode stability. In this study, the Ti/SnO2-Sb/NSGCN-PbO2 electrode performance in ciprofloxacin (CIP) removal was investigated. Electrochemical removal of CIP was done via anodic oxidation method by using generate hydroxyl radical (OH֯) on the anode surface. The removal efficiency of ciprofloxacin in 240 minutes at pH=6.8 and ambient temperature was 44.3%.Furthermore the amount of energy consumed was 0.368 kWh m-3. According to the obtained results Ti/SnO2-Sb/NSGCN-PbO2 anode performs better than Ti/SnO2-Sb/PbO2, Ti/PbO2 and Ti/SnO2-Sb in removing Ciprofloxacin and energy consumption.

کلیدواژه‌ها English

Ti/SnO2-Sb/NSGCN-PbO2 electrode
Anodic oxidation
Ciprofloxacin
graphitic carbon nitride
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