التفاصيل البيبلوغرافية
| العنوان: |
Development of g-C3N4/BiVO4 Binary Component Heterojunction as an Advanced Visible Light-Responded Photocatalyst for Polluted Antibiotics Degradation. |
| المؤلفون: |
Le Minh Tri, Nguyen, Cam, Nguyen Thi Dieu, Pham, Hai Dinh, Van Thuan, Doan, Pham, Thanh-Dong, Nguyen, Van Tang, Trung, Nguyen Tien, Tung, Mai Hung Thanh, Phuong, Tran Thi Thu, Nguyen, Thi Thu Phuong, Van Hoang, Cao, Dao, Van Duong |
| المصدر: |
Topics in Catalysis; Oct2020, Vol. 63 Issue 11-14, p1206-1214, 9p |
| مصطلحات موضوعية: |
HETEROJUNCTIONS, BAND gaps, TETRACYCLINES, CONDUCTION bands, VALENCE bands, ANTIBIOTICS, TETRACYCLINE, HYDROXYL group |
| مستخلص: |
g-C3N4/BiVO4, binary component heterojunction materials, were successfully synthesized for novel photocatalytic tetracycline (TC) decomposition. In the prepared binary component heterojunction, BiVO4 was well distributed on g-C3N4 layer. In addition, BiVO4 and g-C3N4 was intimately contacted. Both BiVO4 and g-C3N4, which band gap energies were approximately 2.46 and 2.71 eV, respectively, would also absorb significant amount of visible light to excite electrons (e−) from their valence bands to conduction bands. Thus, the e− on the conduction band of the BiVO4 could quickly transfer and combine with the h+ on the valence band of the g-C3N4. Therefore, the g-C3N4/BiVO4 could be easily excited by incident visible irradiation to produce large number of h+ on the valence band of the BiVO4 and e− on the conduction band of the g-C3N4. These produced e− and h+ were strong enough for reactions with water and oxygen to product huge amounts of hydroxyl radicals for novel TC degradation. The photocatalytic performance of these g-C3N4/BiVO4 materials highly depended on weight ratio of these used precursors. The g-C3N4/BiVO4-10 material, which the g-C3N4:BiVO4 weight ratio was 10%, presented the highest tetracycline degradation efficiency (95%). This was due to these excess of g-C3N4 covered more BiVO4 surface preventing incident light reaching to the material and also represented as active sites for recombination of charges (e− and h+) decreasing photocatalytic efficiency of the system. Finally, the synthesized g-C3N4/BiVO4 presented novel durability during long-term photocatalysis. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
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