N_(2)photofixation promoted by in situ photoinduced dynamic iodine vacancies at step edge in Bi_(5)O_(7)I nanotubes

作     者：Xing’an Dong Kaiwen Wang Zhihao Cui Xian Shi Zhiming Wang Fan Dong Xing'an Dong;Kaiwen Wang;Zhihao Cui;Xian Shi;Zhiming Wang;Fan Dong

作者机构：Research Center for Carbon-Neutral Environmental&Energy TechnologyInstitute of Fundamental and Frontier SciencesUniversity of Electronic Science and Technology of ChinaChengdu 611731China Beijing Key Lab of Microstructure and Properties of Advanced MaterialsBeijing University of TechnologyBeijing 100124China Department of Chemistry and BiochemistryThe Ohio State UniversityColumbusOhio 43210USA 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第5期

页      面：6679-6686页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：the National key Research and Development project of China(No.2020YFA0710000) the National Natural Science Foundation of China(Nos.22225606,22176029,and 21822601) the Sichuan Natural Science Foundation for Distinguished Scholars(No.2021JDJQ0006) the Fundamental Research Funds for the Central Universities(No.ZYGX2019Z021) 

主　　题：nitrogen fixation halogen vacancy photoreduction surface tensile strain rapid scan in situ Fourier transform infrared(FTIR) 

摘      要：Heterogeneous photosynthesis is a promising route for sustainable ammonia production,which can utilize renewable energy and water as the hydrogen source under ambient *** this study,a series of Bi_(5)O_(7)I(BOI)nanosheets and nanotubes are synthesized,the surface tensile strain is formed by curling the nanosheets into nanotubes to tune the concentration and location of dynamic *** transmission electron microscopy(STEM)with spherical aberration correction confirms the presence of intrinsic areal defects on the surface of the BOI nanotube resulted from surface tensile *** presence of areal defects lowers the formation energy of I vacancies(IV)at step edge site,thus the IV with higher concentration would be favorably generated under visible *** scan in situ Fourier transform infrared(FT-IR)analysis in the aqueous media reveals that the IV promotes photocatalytic N_(2) activation and reduction,proceeds through an associative alternating ***,after turning off the light,the surface vacancy sites can be reoccupied by I−ions,which enables the protection and regeneration of photocatalyst surface in an aerobic and dark *** work provides an innovative strategy to tune concentration and location of dynamic surface vacancies on photocatalysts by building surface tensile strain for advancing sustainable ammonia production.