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High photocatalytic activity of oliver-like BiVO4 for Rhodamine B degradation under visible light irradiation / Huu Vinh Nguyen, Tran Van Thuan, Sy Trung Do, Duy Trinh Nguyen, Dai-Viet N. Vo, Long Giang Bach // Applied Mechanics and Materials. - . - Vol. 876 (2018), P.52-56. - ISSN:

Switzerland : Trans Tech Publications, 2018
5 p.
Ký hiệu phân loại (DDC): 542
We report the facial synthesis of BiVO4 crystals with different morphologies by the solvothermal and hydrothermal process. The phase structure and morphology as-synthesized samples were characterized by XRD, FE-SEM, and UV-vis DRS spectroscopy. We also investigated the photocatalytic activity of BiVO4 for the decomposition of rhodamine B (RhB) under visible light irradiation. The results showed that oliver-like BiVO4 was obtained when using the mixed solvent of ethylene glycol and water while starflower-like BiVO4 was obtained using the mixed solvent of ethylene glycol monomethyl ether and water. The hydrothermal evolution process the BiVO4 product with a rod-like morphology. Oliver-like BiVO4 with pure monoclinic scheelite phase and high specific surface area exhibits efficient photodegradation of RhB (k = 7.82x10-3 min-1).
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Impacts of Online Education on Teaching Quality and Satisfaction of Medical Students During Covid-19 : A Case Study in a Private University in Vietnam / Nguyen Tran Ngoc Phi, Nguyen Thi Thuy Phuong, Pham Nguyen Trong Nhan, Ta Duc Luan, To Dinh Khuong, Nguyen Huu Vinh // Education Quarterly Reviews . - Vol.4, No.4, 2021: 145-154. - . - ISSN: 2621-5799

The Asian Institute of Research, 2021
11 tr.
Ký hiệu phân loại (DDC): 378
As a developing countries, Vietnam has been facing a myriad of challenges in various aspects during the Covid- 19 pandemic. Educational sector is not an exception as it is currently suffering the heavy consequences of the constant disruptions stemming from the switching to online learning. This study was conducted with the aim of surveying and evaluating the views of students of the Faculty of Medicine at Nguyen Tat Thanh University on the influence of online learning on learning quality. Using data from survey questionnaires, the results show that the online learning has impacted different learning aspects of students such as: time management, online satisfaction, training problems. At the same time, the study also recognizes the contributions of students in improving the quality of online teaching of Nguyen Tat Thanh University.
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