期刊论文

Surface Oxygen Vacancy Based Photocatalysts for Nitrogen Fixation

Zhang, L.

中文

中国材料进展

1674-3962

2019

38

2

83-90

10.7502/j.issn.1674-3962.2019.02.01

21425728:国家自然科学基金 2013CB632402:国家重点基础研究发展计划（973计划） 51472100:国家自然科学基金 2018YBZZ024:中央高校基本科研业务费专项

本校为第一且通讯机构

合成氨是基本的化工过程,对地球能源、环境和生命过程至关重要。Harbor-Bosch过程利用Fe催化剂开创性地实现了氮气还原固定为氨。由于氮气N≡≡N三键化学性质稳定,该反应需要在高温高压条件才能实现有效氮气固定。近年来,太阳能驱动的光催化固氮以其绿色温和的反应条件受到了广泛关注。最近,作者团队以卤氧铋和钌(Ru)/氢化氧化钛为模型催化剂,提出氧空位电子可有效活化氮气,即氧空位对氮气的直接电子传递或者氧空位电子经由Ru纳米晶传递给吸附态分子氮能有效弱化氮气N≡≡N三键,结合高效太阳光全光谱吸收材料,将光催化合成氨效率提高至接近传统热催化效率,为高效太阳光驱动固氮提供了新途径。从...

Ammonia synthesis is a process of vital importance to energy, environment and lives on earth. The industrial paradigm of Harbor-Bosch process utilizes Fe as catalyst realizing large-scale nitrogen fixation. Because of the robust N≡≡N triple bond of the molecular nitrogen, this reaction (N2+3H2 = 2NH3) occurs at high pressure and temperature. In recent years, the facile and "green" alternate of photocatalytic nitrogen fixation has been paid much attention. Recently, we reported that the excess electrons in oxygen vacancies (OV) could activate ...