| 富含光诱导氧空位Bi12O17Br2的制备及其高效光催化固氮性能 | |
| Fabrication of Bi12O17Br2 with Efficient Photocatalytic N2 Fixation Boosted by Photoinduced Oxygen Vacancies | |
| 摘要: 采用一步水热法制备了 Bi12O17Br2光催化剂，其平均微片尺寸为 1.2 μm，比表面积约为 29 m2·g-1。Bi12O17Br2的禁带宽度为2.42 eV，能够响应可见光。值得注意的是，在光照条件下Bi12O17Br2表面能够产生氧空位；光诱导氧空位不仅能促进氮气在催化剂表面的吸附，而且对吸附的氮气分子的活化起到至关重要的作用。实验结果表明在可见光照射下，Bi12O17Br2光催化剂上的氨生成速率为337.6 μmol·g-1·h-1。在可见光的驱动下，Bi12O17Br2光催化剂能够实现氮气与水反应生成氨的过程。 | |
| 关键词: Bi12O17Br2 光催化 氧空位 固氮 | |
| 基金项目: 山东省自然科学基金(No.ZR2021QE032)和曲阜师范大学科研启动基金资助 | |
| Abstract: Bi12O17Br2 photocatalyst was prepared through a one-pot hydrothermal method. An average microsheets size of 1.2 μm and a high specific surface area of ca. 29 m2·g-1 were observed for Bi12O17Br2 photocatalyst. Bi12O17Br2 has a bandgap of 2.42 eV, which can be excited under visible light illumination. The photoinduced oxygen vacancies are easily generated on the surface of Bi12O17Br2. The N2 molecules could be captured and activated by oxygen vacancies. An NH3 generation rate of 337.6 μmol·g-1·h-1 was detected on Bi12O17Br2 under visible light irradiation. It demonstrates that the accomplishment of the visible-light-driven photocatalytic for the N2 photo fixation with H2O over a Bi12O17Br2 photocatalyst. | |
| Keywords: Bi12O17Br2 photocatalysis oxygen vacancy N2 photo fixation | |
| 投稿时间：2021-09-14 修订日期：2021-12-29 | |
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| 高美超,巩云云,李梓玥,王百惠,黄晓清,于雯娇.富含光诱导氧空位Bi12O17Br2的制备及其高效光催化固氮性能[J].无机化学学报,2022,38(3):542-550. | |
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