TY - JOUR
T1 - One-pot solvothermal syntheses of ternary heterostructured TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 controllable in terms of composition, morphology and structure
T2 - Materials of high visible-light driven photocatalytic activity
AU - Zou, Jian Ping
AU - Luo, Sheng Lian
AU - Zhang, Long Zhu
AU - Ma, Jun
AU - Lei, Si Liang
AU - Zhang, Long Shuai
AU - Luo, Xu Biao
AU - Luo, Yan
AU - Zeng, Gui Sheng
AU - Au, Chak Tong
N1 - Funding Information:
We gratefully acknowledge the financial support of the NSF of China ( 20801026 , 51238002 and 51272099 ), the NSF of Jiangxi Province ( 20114BAB203005 ), and the Aviation Science Foundation of China ( 2008ZF56012 ), and Foundation of State Key Laboratory of Structural Chemistry ( 20100015 ).
PY - 2013/8
Y1 - 2013/8
N2 - Novel ternary heterostructured TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 were synthesized by a one-pot template-free solvothermal method. For comparison studies, Bi2MoO6, Bi3.64Mo0.36O6.55, Bi2MoO6/Bi3.64Mo0.36O6.55, TiO2-Bi2MoO6, and TiO2-Bi3.64Mo0.36O6.55 were also synthesized likewise. The photocatalysts were characterized by powder X-ray diffraction, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The experimental results showed that the composition, morphology and structure of the photocatalysts can be well controlled by adjusting the pH value, alcohol/water ratio, and TiO2 content. Based on the findings, we put forward a mechanism for the formation of the materials. Furthermore, the results of photocatalytic degradation of Rhodamine B (RhB) and o-nitrophenol over the as-prepared materials indicate that photocatalytic efficiency can be closely related to the composition, morphology and structure of the materials. The ternary heterostructured 5%TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 exhibits good visible-light driven photocatalytic activity in the degradation of RhB and o-nitrophenol, much higher than those of TiO2, Bi2MoO6, Bi3.64Mo0.36O6.55, and any combination of the three. Finally, a new mechanism for the photocatalytic action of the heterostructured materials was put forward. Overall, the investigation provides a new reaction mode to explain the effective interfacial charge transfer and the significant improvement in photocatalytic efficiency of the ternary heterostructured composites.
AB - Novel ternary heterostructured TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 were synthesized by a one-pot template-free solvothermal method. For comparison studies, Bi2MoO6, Bi3.64Mo0.36O6.55, Bi2MoO6/Bi3.64Mo0.36O6.55, TiO2-Bi2MoO6, and TiO2-Bi3.64Mo0.36O6.55 were also synthesized likewise. The photocatalysts were characterized by powder X-ray diffraction, UV-vis diffuse reflectance spectroscopy, scanning electron microscopy, transmission electron microscopy, and Raman spectroscopy. The experimental results showed that the composition, morphology and structure of the photocatalysts can be well controlled by adjusting the pH value, alcohol/water ratio, and TiO2 content. Based on the findings, we put forward a mechanism for the formation of the materials. Furthermore, the results of photocatalytic degradation of Rhodamine B (RhB) and o-nitrophenol over the as-prepared materials indicate that photocatalytic efficiency can be closely related to the composition, morphology and structure of the materials. The ternary heterostructured 5%TiO2-Bi2MoO6/Bi3.64Mo0.36O6.55 exhibits good visible-light driven photocatalytic activity in the degradation of RhB and o-nitrophenol, much higher than those of TiO2, Bi2MoO6, Bi3.64Mo0.36O6.55, and any combination of the three. Finally, a new mechanism for the photocatalytic action of the heterostructured materials was put forward. Overall, the investigation provides a new reaction mode to explain the effective interfacial charge transfer and the significant improvement in photocatalytic efficiency of the ternary heterostructured composites.
KW - Bismuth molybdate
KW - Composite materials
KW - Controllable syntheses
KW - Heterostructured
KW - Photocatalysis
UR - http://www.scopus.com/inward/record.url?scp=84878425280&partnerID=8YFLogxK
U2 - 10.1016/j.apcatb.2013.04.057
DO - 10.1016/j.apcatb.2013.04.057
M3 - Journal article
AN - SCOPUS:84878425280
SN - 0926-3373
VL - 140-141
SP - 608
EP - 618
JO - Applied Catalysis B: Environmental
JF - Applied Catalysis B: Environmental
ER -