Liên kết đào tạo trình độ thạc sĩ là một hoạt động quan trọng của các cơ sở giáo dục đại học. Từ thực tiễn liên kết của Trường Đại học Vinh, để nâng cao chất lượng hiệu quả của hoạt động này, liên kết đào tạo trình độ thạc sĩ phải đáp ứng mục tiêu đào tạo theo nhu cầu xã hội, tăng cường các biện pháp quản lý chất lượng, thực hiện chuyển giao trong quá trình liên kết đào tạo, tranh thủ sự ủng hộ, phối hợp của các ban ngành và cơ quan, cơ sở giáo dục đại học.
Fe-Cu material is made by chemical plating method. Materials Fe-Cu is used removal of methylene blue from aqueous solution by internal microelectrolysis. The results show that with optimal conditions for methylene blue decomposition is pH of 4, contact time of 120 minutes, material weight of 1.67 g/L, shaking rate of 300 revolutions per minute (rpm), methylene blue removal efficiency is 93.63 %, with the initial concentration is 245.11 mg/L. The process of decomposition of methylene blue by Fe-Cu material follows the assumed second order kinetic equation with reaction rate constant k = 0.0023 min-1. L.mg-1, The results show that materials Fe-Cu can be applied to remove methylene blue from aqueous solution by internal microelectrolysis
In this study, we presented a report on effect of growth parameters (seeding promoter, growth temperature, Ar gas flow rate) on the formation of MoS2 monolayer. The morphology and structure of as-grown MoS2 were investigated in detail by optical microscopy, atomic force microscopy, Raman and photoluminesence spectroscopy techniques. The results showed that a highly reproducible growth of dense MoS2 triangular flakes with the size of ~35 µm over large area (~1.5x1 cm2) can be obtained by using a optimized parameters. The MoS2 field effect transistors based on the as-grown MoS2 exhibited carrier mobility of 0.5–2 cm2V−1s−1 and On/Off ratio of ~104. Our results can provide a useful information to realize large area, high quality of MoS2 for real electronic applications.
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