Wang Jinhu, Gao Junyu, Miao Yingxuan, Li Dong, Zhao Yunxuan, Zhang Tierui
Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China.
iScience. 2024 May 22;27(6):110088. doi: 10.1016/j.isci.2024.110088. eCollection 2024 Jun 21.
While photocatalytic technology has brought additional opportunities and possibilities for the green conversion and sustainable development of ammonium-based nitrogen fertilizers, the low activation efficiency of the molecular N has impeded its further application feasibility. Here to address the concern, we designed an amorphous molybdenum hydroxide anchored on the ultrathin magnesium-aluminum layered double hydroxide (Mo@MgAl-LDH) nanosheets for benefiting the N photofixation to NH. With the aid of the designed amorphous Mo(V) species, the pristine MgAl-LDH exhibited a considerable performance of nitrogen photofixation under visible light irradiation (NH production rate of 114.4 μmol g h) due to the improved N activation efficiency. The work demonstrated a feasible strategy for nitrogen photofixation using amorphous Mo(V) species, which may also deliver a novel inspiration for the development of amorphous photocatalysts toward the photoactivation of molecular N.
虽然光催化技术为铵基氮肥的绿色转化和可持续发展带来了更多机遇和可能性，但分子氮的低活化效率阻碍了其进一步应用的可行性。为了解决这一问题，我们设计了一种锚定在超薄镁铝层状双氢氧化物（Mo@MgAl-LDH）纳米片上的非晶态氢氧化钼，以促进氮光固定为氨。借助设计的非晶态Mo(V)物种，原始的MgAl-LDH在可见光照射下表现出可观的氮光固定性能（氨生成速率为114.4 μmol g⁻¹ h⁻¹），这是由于氮活化效率提高所致。这项工作展示了一种使用非晶态Mo(V)物种进行氮光固定的可行策略，这也可能为开发用于分子氮光活化的非晶态光催化剂提供新的灵感。
