Hierarchical microspheres of a graphene oxide（GO） coupled to N‐doped（BiO）2CO3 composite（N‐BOC‐GO） was synthesized by a simple hydrothermal approach. The N‐BOC‐GO composite gave enhancement in photocatalytic...Hierarchical microspheres of a graphene oxide（GO） coupled to N‐doped（BiO）2CO3 composite（N‐BOC‐GO） was synthesized by a simple hydrothermal approach. The N‐BOC‐GO composite gave enhancement in photocatalytic activity compared to the pure BOC and N‐BOC samples. With 1.0wt% GO, 62% NO removal was obtained with N‐BOC‐GO. The factors enhancing the photocatalytic performance were the high electron‐withdrawing ability and high conductivity of GO and improved visible light‐harvesting ability of N‐BOC‐GO with a 3D hierarchical architecture due to the surface scattering and reflecting（SSR） effect. An effective charge transfer from N‐BOC to GO was demonstrated by the much weakened photoluminescene intensity of the N‐BOC‐GO composite. This work highlights the potential application of GO‐based photocatalysts in air purification.展开更多
基金supported by the National Natural Science Foundation of China(21277097)the Key Projects in the National Science&Technology Pillar Program during the 12th Five-Year Plan Period(2012BAJ21B01)~~
文摘Hierarchical microspheres of a graphene oxide（GO） coupled to N‐doped（BiO）2CO3 composite（N‐BOC‐GO） was synthesized by a simple hydrothermal approach. The N‐BOC‐GO composite gave enhancement in photocatalytic activity compared to the pure BOC and N‐BOC samples. With 1.0wt% GO, 62% NO removal was obtained with N‐BOC‐GO. The factors enhancing the photocatalytic performance were the high electron‐withdrawing ability and high conductivity of GO and improved visible light‐harvesting ability of N‐BOC‐GO with a 3D hierarchical architecture due to the surface scattering and reflecting（SSR） effect. An effective charge transfer from N‐BOC to GO was demonstrated by the much weakened photoluminescene intensity of the N‐BOC‐GO composite. This work highlights the potential application of GO‐based photocatalysts in air purification.
