| 赵泽方,赵玉宝.Bi12O17Br2的制备及其光催化固氮性能的研究[J].南华大学学报(自然科学版),2022,(4):57~61, 67.[ZHAO Zefang,ZHAO Yubao.Preparation of Bi12O17Br2 and its Photocatalytic Performance of Nitrogen Fixation[J].Journal of University of South China(Science and Technology),2022,(4):57~61, 67.] |
| Bi12O17Br2的制备及其光催化固氮性能的研究 |
| Preparation of Bi12O17Br2 and its Photocatalytic Performance of Nitrogen Fixation |
| 投稿时间：2022-03-14 |
| DOI： |
| 中文关键词: Bi12O17Br2 光催化 固氮 |
| 英文关键词:Bi12O17Br2 photocatalysis nitrogen fixation |
| 基金项目:能源与环境光催化国家重点实验室开放课题(SKLPEE-KF201706) |
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| 中文摘要: |
| 采用一步水解法,通过控制不同水解时间制备系列Bi12O17Br2,对其晶相、氮吸脱附、光吸收及电化学特性进行鉴定与表征。将Bi12O17Br2用于可见光辐照下光催化固氮的结果表明,随制备时水解时间的延长,Bi12O17Br2对N2的化学吸附量增大,光催化固氮的活性增加,在不采用助剂、仅有N2和水的情况下,产NH＋4的速率高达144 μmol/(L·g·h)。电化学测定结果显示,随制备时水解时间的延长,所得Bi12O17Br2的电化学阻抗降低、光电流响应增大。 |
| 英文摘要: |
| A serials of Bi12O17Br2 were prepared by one-step hydrolysis under mild conditions, and their crystal phase, interaction with N2, optical and electrochemical features were systematically characterized and analyzed. The results showed that the photocatalytic performance of Bi12O17Br2 for N2 fixation was greatly improved with increasing the hydrolysis time. The yield of NH＋4 reached 144 μmol/(L·g·h) without the addition of sacrificial agents and co-catalysts. Electrochemical measurement results show that Bi12O17Br2 prepared with long-time hydrolysis has small electrochemical impedance, which could be beneficial to efficient separation of photogenerated carriers. As a result, long-time hydrolysis make Bi12O17Br2 a promising catalyst for photocatalytic fixation of nitrogen under visible light. |
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