2013年
Activation of graphitic carbon nitride (g-C3N4) by alkaline hydrothermal treatment for photocatalytic NO oxidation in gas phase
JOURNAL OF MATERIALS CHEMISTRY A
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- 巻
- 1
- 号
- 21
- 開始ページ
- 6489
- 終了ページ
- 6496
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1039/c3ta10472a
- 出版者・発行元
- ROYAL SOC CHEMISTRY
Photocatalytic activity of graphitic carbon nitride (g-C3N4) was significantly improved by an alkaline hydrothermal treatment. The specific surface area of g-C3N4 obtained by heating melamine at 550 degrees C was only 7.7 m(2) g(-1), which was too small for it to be utilized as a catalyst for air purification. By the hydrothermal treatment with NaOH solution at 90-150 degrees C, the surface area was increased up to 65 m(2) g(-1), and the oxidation rate of nitrogen oxide (NO) under visible light (380 < lambda < 480 nm) was increased by 8.6 times. XRD, ESR, elemental analysis and electron microscopy showed that unstable domains of not-well-ordered carbon nitride were removed by hydrolysis to form a mesoporous structure with a higher surface area. Deactivation of g-C3N4 was not observed during the experimental period, although a small part of carbon nitride was decomposed by self-oxidation.
- リンク情報
- ID情報
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- DOI : 10.1039/c3ta10472a
- ISSN : 2050-7488
- eISSN : 2050-7496
- ORCIDのPut Code : 45677863
- Web of Science ID : WOS:000318565700025