Solid solutions between LaNbON_(2)and LaMg_(2/3)Nb_(1/3)O_(3),i.e.(LaNbON_(2))_(1−x)(LaMg_(2/3)Nb_(1/3)O_(3))_(x)(0.0≤x≤1.0),have been investigated as photocatalysts for water oxidation into oxygen under visible lig...Solid solutions between LaNbON_(2)and LaMg_(2/3)Nb_(1/3)O_(3),i.e.(LaNbON_(2))_(1−x)(LaMg_(2/3)Nb_(1/3)O_(3))_(x)(0.0≤x≤1.0),have been investigated as photocatalysts for water oxidation into oxygen under visible light illumination(λ≥420 nm).Many important parameters are strongly correlated with solid solution levels,including band gap,nitrogen content,defect concentration,band edge alignments,etc.This offers us a useful tool to steer photocatalytic performance among these solid solutions.Much improved photocatalytic activity is noticed for(LaNbON_(2))_(0.8)(LaMg_(2/3)Nb_(1/3)O_(3))_(0.2)(x=0.2),which gives an AQE as high as 0.53%at 420±20 nm.This useful strategy by forming solid solutions opens new playgrounds full of opportunities for the design and development of efficient photocatalysts for solar energy conversions.展开更多
基金National Natural Science Foundation of China(Grant no.51972233)Natural Science Foundation of Shanghai(Grant no.19ZR1459200)+1 种基金Shanghai Science and Technology Commission(14DZ2261100)Fundamental Research Funds for the Central Universities。
文摘Solid solutions between LaNbON_(2)and LaMg_(2/3)Nb_(1/3)O_(3),i.e.(LaNbON_(2))_(1−x)(LaMg_(2/3)Nb_(1/3)O_(3))_(x)(0.0≤x≤1.0),have been investigated as photocatalysts for water oxidation into oxygen under visible light illumination(λ≥420 nm).Many important parameters are strongly correlated with solid solution levels,including band gap,nitrogen content,defect concentration,band edge alignments,etc.This offers us a useful tool to steer photocatalytic performance among these solid solutions.Much improved photocatalytic activity is noticed for(LaNbON_(2))_(0.8)(LaMg_(2/3)Nb_(1/3)O_(3))_(0.2)(x=0.2),which gives an AQE as high as 0.53%at 420±20 nm.This useful strategy by forming solid solutions opens new playgrounds full of opportunities for the design and development of efficient photocatalysts for solar energy conversions.
