نشریه شیمی و مهندسی شیمی ایران

نشریه شیمی و مهندسی شیمی ایران

پلیمرهای کوئوردیناسیونی متخلخل دو فلزی برپایه مس و کبالت به­ عنوان یک الکتروکاتالیست کارآمد برای اکسایش اوره

نوع مقاله : علمی-پژوهشی

نویسندگان
رضا اباذری 1
جعفر شریعتی 2
1 گروه شیمی، دانشکده علوم پایه، دانشگاه مراغه، مراغه، ایران
2 گروه مهندسی شیمی، واحد داراب، دانشگاه آزاد اسلامی، داراب، ایران
چکیده
در مطالعه حاضر، سنتز Cu-PCP، Co-PCP و پلیمرهای کوئوردیناسیونی متخلخل دو فلزی-آلی CuCo-PCP از طریق یک روش هیدروترمال تک مرحله‌ای با استفاده از اتصال‌دهنده‌های ۴،۴-اکسی‌بیس (بنزوئیک اسید) و N،N- بیس-(۴-پیریدیل‌فرمامید)-۱و۴-بنزن‌دی‌آمین انجام شد. فعالیت الکتروکاتالیستی عالی نسبت به اکسیداسیون اوره برای پلیمرهای کوئوردیناسیونی متخلخل دو فلزی-آلی CuCo-PCP  سنتز شده گزارش شد که دست یابی به چگالی جریان بالای mA /cm2  10 در پتانسیل V 495/1، شیب تافل mV/dec 128 و فرکانس گردش قابل توجه s-1 068/0را نشان می­ دهد. الکترولیز اوره در ولتاژ سلول کم V 53/1 به چگالی جریان mA /cm2  10 دست یافت، که نشان دهنده مقادیری تقریباًmV 200 کمتر از مقادیر مورد نیاز برای الکترولیز آب معمولی است. این موضوع در حالی است که پایداری را بیش از ۴۸ ساعت در mA/cm2 50 بدون کاهش قابل توجه عملکرد، حفظ می کند. ساختارهای سه بعدی پلیمرهای کوئوردیناسیونی متخلخل دو فلزی-آلی CuCo-PCP، منجر به عملکرد کاتالیستی فوق العاده خوب آنها می ­شود که این موضوع  به دلیل در دسترس بودن مکان­ های فعال مولکولی زیاد و همچنین انتقال جرم موثر (به دلیل معماری منحصر به فرد آنها)، می­ باشد. برهمکنش هم‌افزایی بین مس و کبالت در پیکربندی پلیمرهای کوئوردیناسیونی متخلخل، انتقال سریع‌تر الکترون را تسهیل کرده و به پلیمرهای کوئوردیناسیونی متخلخل دو فلزی-آلی CuCo-PCP تازه توسعه‌یافته، پتانسیل بیشتری برای کسایش اوره و کاربردهای پیشرفته ذخیره‌سازی انرژی می‌دهد.
کلیدواژه‌ها
الکتروکاتالیست
پلیمر کوئوردیناسیونی متخلخل دوفلزی
اکسایش اوره
تولید هیدروژن.

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