材料科学
异质结
铈
氧化物
能量转换效率
氧化铈
电子转移
吸附
光催化
化学工程
氮气
人工光合作用
纳米技术
光电子学
光化学
化学
催化作用
冶金
生物化学
有机化学
工程类
作者
Hua Li,Junwei Zhang,Xia Deng,Yantao Wang,Genping Meng,Ruitong Liu,Junfeng Huang,Mudong Tu,Cailing Xu,Yong Peng,Baodui Wang,Yanglong Hou
标识
DOI:10.1002/anie.202316384
摘要
Abstract Photocatalytic nitrogen fixation using solar illumination under ambient conditions is a promising strategy for production of the indispensable chemical NH 3 . However, due to the catalyst‘s limitations in solar energy utilization, loss of hot electrons during transfer, and low nitrogen adsorption and activation capacity, the unsatisfactory solar‐to‐chemical conversion (SCC) efficiencies of most photocatalysts limit their practical applications. Herein, cerium oxide nanosheets with abundant strain‐V O defects were anchored on Au hollow nanomushroom through atomically sharp interfaces to construct a novel semiconductor/plasmonic metal hollow nanomushroom‐like heterostructure (denoted cerium oxide‐AD/Au). Plasmonic Au extended the absorption of light from the visible to the second near‐infrared region. The superior interface greatly enhanced the transfer efficiency of hot electrons. Abundant strain‐V O defects induced by interfacial compressive strain promoted adsorption and in situ activation of nitrogen, and such synergistic promotion of strain and V O defects was further confirmed by density functional theory calculations. The judicious structural and defect engineering co‐promoted the efficient nitrogen photofixation of the cerium oxide‐AD/Au heterostructures with a SCC efficiency of 0.1 % under simulated AM 1.5G solar illumination, which is comparable to the average solar‐to‐biomass conversion efficiency of natural photosynthesis by typical plants, thus exhibiting significant potential as a new candidate for artificial photosynthesis.
科研通智能强力驱动
Strongly Powered by AbleSci AI