کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1308798 1499152 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Preparation and characterization of a site-specific oxygen monitoring material based on a magnetic–emissive hybrid composite modified with Ru(II) complex
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Preparation and characterization of a site-specific oxygen monitoring material based on a magnetic–emissive hybrid composite modified with Ru(II) complex
چکیده انگلیسی


• A core–shell structured nanocomposite was constructed for O2 sensing.
• Fe3O4 and MCM-41 were used as the inner core and the outer shell, respectively.
• A Ru(II) complex was modified and attached to MCM-41 tunnels.
• Emission of this composite decreased with increasing O2 concentrations.
• Sensitivity of 11.6 and response time of 21 s were obtained.

In this paper, a magnetic–emissive hybrid composite modified with Ru(II) complex was constructed aiming at site-specific oxygen sensing. Core–shell structure was applied in this composite with superparamagnetic Fe3O4 as inner core and silica molecular sieve MCM-41 as outer shell, respectively. A silane coupling ligand N-(5H-cyclopenta[1,2-b:5,4-b′]dipyridin-5-ylidene)-3-(triethoxysilyl)propan-1-amine (CDO-Si) and its corresponding Ru(II) complex were covalently connected into MCM-41 shell, acting as sensing probe. This composite was characterized and confirmed by SEM, TEM, XRD, IR, TGA and N2 adsorption/desorption. Its emission response to molecular O2 was investigated. It was found that composite emission decreased with increasing O2 concentrations, showing sensitivity of 11.6 and response time of 21 s.

A core–shell structured nanocomposite for O2 sensing was reported, using superparamagnetic ferroferric oxide and silica molecular sieve MCM-41 as the inner core and the outer shell, respectively. Composite emission decreased with increasing O2 concentrations, showing sensitivity of 11.6 and response time of 21 s.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Inorganica Chimica Acta - Volume 437, 1 October 2015, Pages 120–126
نویسندگان
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