摘要
Reducing nitrogen to ammonia with solar energy has become a wide concern when it comes to photocatalysis research.It is considered to be one of the more promising alternate options for the conventional Haber-Bosch cycle.Herein,2D g-C_(3)N_(4)composites with modifying ultrathin sheet MnO_(2-x)were prepared and used as nitrogen fixation photocatalyst.With the assistance of the nature of MnO_(2-x),the generation rate of NH_(3)reached 225 mmol g^(-1)h^(-1),which is more than twice over the rate of pristine 2D g-C_(3)N_(4)(107 mmol g^(-1)h^(-1)).The presence of ultrathin sheet MnO_(2-x)shortens the gap of the carriers to the surface of photocatalyst.Thus the speed of electron transfer gets increased.Besides,the construction of Z-scheme heterojunction boosts the separation and migration of photogenerated carriers.As a result,the nitrogen reduction reaction(NRR)performance gets enhanced.The work may provide an example of promoting the NRR performance of non-metallic compound.
基金
supported by National Natural Science Foundation of China(21776118,21808090)
Natural Science Foundation of Jiangsu Province(BK20190981)
Jiangsu Fund for Distinguished Young Scientists(BK20190045)
China Postdoctoral Science Foundation(2019M661765)
High-tech Research Key laboratory of Zhenjiang(SS2018002)
A Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions,the high-performance computing platform of Jiangsu University。
