摘要
Mesoporous （Ga1-xZnx）（N1-xOx） hexagonal nanoplates were prepared by nitridation of layered double hydrox- ides （LDHs） containing Zn2＋ and Ga3＋ ions with different [Zn]/[Ga] ratios. Their specific surface areas ranged from 21.25 to 50.95 m2/g were much higher than those previously reported. The （Ga1-xZnx）（N1-xOx） showed broad visible light absorption and reduced band gaps with increasing Zn content. When [Zn]/[Ga]=2, the （Ga1-xZnx）（N1-xOx） absorbed strongly the light of wavelength less than 525 nm and showed the highest visible light driven 142 production efficiency. After totally repeated runs for 30 h, the H2-production activity of （Ga1-xZnx）（N1-xOx） did not fall off, indicating its good photochemical stability and photocatalytic activity for long time. Herein, the results pro- vide new insights into （Ga1-xZnx）（N1-xOx） as high performance photocatalyst and their potential application in visi- ble-light driven water splitting H2 production.
Mesoporous （Ga1-xZnx）（N1-xOx） hexagonal nanoplates were prepared by nitridation of layered double hydrox- ides （LDHs） containing Zn2＋ and Ga3＋ ions with different [Zn]/[Ga] ratios. Their specific surface areas ranged from 21.25 to 50.95 m2/g were much higher than those previously reported. The （Ga1-xZnx）（N1-xOx） showed broad visible light absorption and reduced band gaps with increasing Zn content. When [Zn]/[Ga]=2, the （Ga1-xZnx）（N1-xOx） absorbed strongly the light of wavelength less than 525 nm and showed the highest visible light driven 142 production efficiency. After totally repeated runs for 30 h, the H2-production activity of （Ga1-xZnx）（N1-xOx） did not fall off, indicating its good photochemical stability and photocatalytic activity for long time. Herein, the results pro- vide new insights into （Ga1-xZnx）（N1-xOx） as high performance photocatalyst and their potential application in visi- ble-light driven water splitting H2 production.
