کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1242399 | 969632 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Application of manganese (II) phthalocyanine synthesized in situ in the SiO2/SnO2 mixed oxide matrix for determination of dissolved oxygen by electrochemical techniques
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This work describes the in situ immobilization of Mn(II) phthalocyanine (MnPc) in a porous SiO2/SnO2 mixed oxide matrix obtained by the sol gel processing method. The chemically modified matrix SiO2/SnO2/MnPc, possessing an estimated amount of 8 × 10−10 mol cm−2 of MnPc on the surface, was used to prepare an electrode to analyze dissolved oxygen in water by an electrochemical technique. The electrode was prepared by mixing the material with ultrapure graphite and evaluated using differential pulse voltammetry. Dissolved O2 was reduced at −0.31 V with a limit of detection (LOD) equal to 7.0 × 10−4 mmol L−1. A mechanism involving four electrons in O2 reduction was determined by the rotating disk electrode technique.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Talanta - Volume 85, Issue 2, 15 August 2011, Pages 1213–1216
Journal: Talanta - Volume 85, Issue 2, 15 August 2011, Pages 1213–1216
نویسندگان
Lucas S.S. Santos, Richard Landers, Yoshitaka Gushikem,