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A comparison of H~+-restacked nanosheets and nanoscrolls derived from K_4Nb_6O_(17) for visible-light degradation of dyes

Chenhui Hu  Lihong Zhang  Liyuan Cheng  Jing Chen  Wenhua Hou  Weiping Ding  
【摘要】:H+-restacked nanosheets and nanoscrolls peeled from K4Nb6O17display different structures and surface characters. The two restacked samples with increased surface areas have an amazing visible-light response for the photodegradation of dyes, which is superior to commercial TiO2(P25) and Nb2O5. By comparison, H+/nanosheets have a relatively faster photodegradation rate originated from large and smooth basal plane.The work reveals that dye adsorbed on the unfolded nanosheets can effectively harvest sunlight. Due to facile preparation, low-cost and high photocatalytic efficiency, H+/nanosheets and H+/nanoscrolls might be used for the visible light-driven degradation of organic dyes as a substitute for TiO2in industry.

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