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سنتزو بررسی کامپوزیت های پلی پیرول /پودر پوست انارو کاربرد آن برای حذف فلزات سنگین از آب | ||
| شیمى کاربردى روز | ||
| دوره 18، شماره 68، مهر 1402، صفحه 63-82 اصل مقاله (1.1 M) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2023.25588.2035 | ||
| نویسندگان | ||
| شهریار پاشایی* 1؛ سلیمان حسین زاده2 | ||
| 1گروه شیمی، دانشکده علوم پایه، دانشگاه پیام نور، تهران، ایران | ||
| 2گروه مهندسی شیمی، دانشکده فنی مهندسی، دانشگاه پیام نور، تهران، ایران | ||
| تاریخ دریافت: 05 دی 1400، تاریخ بازنگری: 20 مرداد 1401، تاریخ پذیرش: 17 تیر 1402 | ||
| چکیده | ||
| پلی پیرول یک پلیمررسانای ذاتی است که کاربردهای مختلفی در حسگرها، باتری ها،غشاهای جداسازی و محافظ خوردگی فلزات دارد.باتوجه به کارایی بالای پلی پیرول تهیه این پلیمرباخواص بهینه باحفظ رسانایی آن بسیار مورد مطالعه قرار گرفته است.در این پژوهش، پلی پیرول (PPy) و کامپوزیت‌های پلی پیرول/ پودر پوست انار(Pomegranate peel powder) (PPy/PPP) از طریق پلیمریزاسیون اکسیداتیو پیرول سنتز شد. و اثرات پودر پوست انار بر روی خواص فیزیکی و شیمیایی پلی پیرول و کامپوزیت‌های آن بررسی شد. پلی پیرول (PPy) و کامپوزیت‌های پلی پیرول/ پودر پوست انار (PPy/PPP) تهیه شده با استفاده از طیف سنجی فوتوالکترون اشعه ایکس (XPS)، آنالیز وزن سنجی حرارتی (TGA)، میکروسکوپ الکترون عبوری (SEM) و آنالیزهای تبدیل فوریه مادون قرمز(IF- IR) مورد شناسایی و مطالعه قرار گرفتند.میکروسکوپ الکترون عبوری (SEM)، شکل پودر پوست انار را کروی و اندازه متوسط آ‌‌‌ن‌ها را در حدود 20-15میکرومتر نشان داد. در این پژوهش، برای جذب سطحی نیکل (II) از محلول آبی به وسیله پلی پیرول و کامپوزیت پلی پیرول/ پودر پوست انار، شاخص‌های موثر بر فرآیند جذب مانندpH ، مقدار جاذب، زمان تماس و غلظت اولیه یون نیکل بررسی و بهینه شده است. میزان توانایی کامپوزیت ها در جذب فلزات سنگین با یکدیگر مقایسه شد. و به منظور بررسی مکانیسم جذب نیز از دماهای لانگمویر و فروندلیچ استفاده شد. داده‌های تجربی نشان داد، جذب سطحی یون نیکل با افزایش غلظت اولیه این یون در محلول افزایش می‌یابد.و همچنین نتایج نشان می دهد، بیش از 83 % ظرفیت جذب یون نیکل نمونه‌ها، تقریبا در 60 دقیقه اولیه جذب، قابل دست‌یابی است. | ||
| کلیدواژه‌ها | ||
| پودر پوست انار؛ مطالعات جذب؛ پلی پیرول؛ فوتوالکترون اشعه ایکس (XPS) | ||
| عنوان مقاله [English] | ||
| Synthesis and investigation of polypyrrole / pomegranate peel powder composites and application for removal of heavy metals from water | ||
| نویسندگان [English] | ||
| shahryar pashaei1؛ Soleyman Hosseinzadeh2 | ||
| 1Department of Chemistry, Payame Noor University, Tehran, Iran. | ||
| 2Department of Chemical Engineering, Payame Noor University, Tehran, Iran. | ||
| چکیده [English] | ||
| Polypyrrole (PPy) is an inherently conducting polymer (ICP) which has different applications in sensors, batteries, separation membranes and corrosion protective of metals. Synthesis of polypyrrole (PPy) with optimum properties and its remarkable conductivity has been studied. In this study, polypyrrole (PPy) and polypyrrole/pomegranate peel powder (PPy/PPP) composites were prepared by oxidative polymerization of pyrrole. The effects of pomegranate peel powder on the physical and chemical properties of polypyrrole and its composites were investigated. The structure of polypyrrole (PPy) and polypyrrole / pomegranate peel powder composites was characterized by X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), and FTIR. Scanning electron microscopy has shown the shape of pomegranate peel powder spherical and their average size about 15-20 micrometers. The thermal properties and thermal degradation of polypyrrole and its composites were studied using thermogravimetric analysis (TGA). Langmuir and Freundlich isotherms were used to investigate the adsorption mechanism. Experimental data showed that the adsorption of nickel ions increases with increasing the initial concentration of this ion in the solution. Also, the results indicated that more than 83% of the nickel ion absorption capacity of the samples can be obtained in the first 60 minutes of absorption. | ||
| کلیدواژه‌ها [English] | ||
| Pomegranate peel powder, adsorption studies, polypyrrole, X-ray photoelectron (XPS) | ||
| مراجع | ||
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