کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1524806 995342 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mild and facile synthesis of Ag2S nanowire precursor using mercaptoacetic acid as a reductant/stabilizer and its subsequent conversion to Ag2S or CdS nanowires
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Mild and facile synthesis of Ag2S nanowire precursor using mercaptoacetic acid as a reductant/stabilizer and its subsequent conversion to Ag2S or CdS nanowires
چکیده انگلیسی

Silver sulfide nanowire precursor was prepared at room temperature by simple mixing of mercaptoacetic acid (MAA) and silver nitrate solutions for 10–20 min duration. The MAA concentration in the chemical reaction bath was varied from 1 to 10 mM to afford nanowire precursors ranging in length from 800 nm to 42 μm and diameters ranging from 53 to 210 nm. The chemical identity of the precursor was established as a Ag+–−SCH2COOH complex by a variety of spectroscopic probes. It could be converted into crystalline Ag2S nanowires (with no alteration in nanowire dimensions) by a thermal anneal at ∼300 °C. Reverse cation exchange of the Ag2S nanowire precursor in a Cd2+-containing medium afforded CdS nanowires (with some alterations in morphology) whose chemical identity was confirmed by Raman spectroscopy and photoluminescence. Finally the dual role of MAA as a capping agent and reducing agent in the formation of the Ag2S nanowire precursor complex is briefly discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Materials Chemistry and Physics - Volume 121, Issue 3, 1 June 2010, Pages 549–554
نویسندگان
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