| 학회 |
한국화학공학회 |
| 학술대회 |
2020년 가을 (10/14 ~ 10/16, e-컨퍼런스) |
| 권호 |
26권 1호, p.793 |
| 발표분야 |
촉매 및 반응공학 |
| 제목 |
The effect of calcination atmosphere on photocatalytic activity of water-dispersible g-C3N4 photocatalysts |
| 초록 |
Bulk graphitic carbon nitride (g-C3N4) photocatalysts were synthesized by thermal polycondensation of thiourea at different gaseous atmospheres (air, N2 and CO2). Water-dispersible g-C3N4 photocatalysts were prepared from bulk g-C3N4 by a chemical oxidation method. The morphological texture, polymeric structure, porosity, charge carrier behavior and light absorption of the materials were thoroughly investigated. Furthermore, their photocatalytic activity was evaluated by degradation of methylene blue under visible light irradiation. The results showed that the structural and optical properties highly depend on gaseous atmosphere. The best photocatalytic activity was exhibited by the sample prepared in CO2 atmosphere with chemical oxidation treatment (CTw) and the possible reasons were discussed. Detailed characterizations indicated that the CO2 calcination atmosphere induced less nitrogen, more NHx groups, and faster rate of the electron transport between heptazine rings for CTw among samples. Water dispersible g-C3N4 showed higher photocatalytic degradation rate of methylene blue than bulk due to the improvement of specific surface area and absorption ability. |
| 저자 |
웬티킴안1, 신은우1, Dao Duc Quang2, Pham Thanh Truc3
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| 소속 |
1울산대, 2Univ. of Ulsan, 3Ho Chi Minh City Univ. of Technology and Education |
| 키워드 |
촉매 |
| E-Mail |
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| 원문파일 |
초록 보기 |
