title: Hydrogenated Bismuth Molybdate Nanoframe for Efficient Sunlight-Driven Nitrogen Fixation from Air.
abstract: Sunlight-driven dinitrogen fixation can lead to a novel concept for the production of ammonia under mild conditions. However, the efficient artificial photosynthesis of ammonia from ordinary air (instead of high pure N2) has never been implemented. Here, we report for the first time the intrinsic catalytic activity of Bi2MoO6catalyst for direct ammonia synthesis under light irradiation. The edge-exposed coordinatively unsaturated Mo atoms in an Mo-O coordination polyhedron can act as activation centers to achieve the chemisorption, activation, and photoreduction of dinitrogen efficiently. Using that insight as a starting point, through rational structure and defect engineering, the optimized Bi2MoO6sunlight-driven nitrogen fixation system, which simultaneously possesses robust nitrogen activation ability, excellent light-harvesting performance, and efficient charge transmission was successfully constructed. As a surprising achievement, this photocatalytic system demonstrated for the first time ultra-efficient (1.3 mmol g-1h-1) and stable sunlight-driven nitrogen fixation from air in the absence of any organic scavengers.
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Yuchen
authors.initials: Y
authors.lastname: Hao
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Dong
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Shangru
authors.initials: S
authors.lastname: Zhai
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Hongchao
authors.initials: H
authors.lastname: Ma
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Xiuying
authors.initials: X
authors.lastname: Wang
authors.affiliation: School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
authors.forename: Xiufang
authors.initials: X
authors.lastname: Zhang
keywords: bismuth molybdate; defect engineering; nitrogen fixation; photocatalysis; structure regulation