کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5350073 1503656 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A facile solvothermal method to produce graphene-ZnS composites for superior photoelectric applications
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
A facile solvothermal method to produce graphene-ZnS composites for superior photoelectric applications
چکیده انگلیسی
In this experiment, flake graphite (<30 μm) was prepared as raw materials. Graphite oxide is prepared with Hummers method by low temperature, middle temperature and high temperature, and further treated with super-sonic oscillation to get graphene oxide. Graphene-zinc sulfide composites were synthesized through a simple solvothermal method using thiourea or sodium sulfide as sulfur source in the ethylene glycol or ethylenediamine, respectively. The products were characterized by X-ray and SEM, and analyzed by the transient photocurrent response and electrochemical impedance spectra. The results indicate that the properties of graphene-zinc sulfide composites prepared with thiourea in ethylene glycol are superior to those of blank-ZnS and composites prepared with sodium sulfide and ethylenediamine, which is attributed to electron capture and transfer ability of graphene resulting in a more efficient separation of the photoexcited charge carriers from ZnS-graphene composites.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 308, 30 July 2014, Pages 206-210
نویسندگان
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