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

作　　者：Chenhui Hu Lihong Zhang Liyuan Cheng Jing Chen Wenhua Hou Weiping Ding 

机构地区：[1]Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering,Nanjing University [2]School of Science,Nanjing University of Technology

出　　处：《Journal of Energy Chemistry》2014年第2期136-144,共9页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.21073084 and 20773065);the Natural Science Foundation of Jiangsu Province(Grant No.BK2011438);973 Project(Grant No.2009CB623504);Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20130091110010);Modern Analysis Center of Nanjing University

摘　　要：H＋-restacked nanosheets and nanoscrolls peeled from K4Nb6O17 display 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 Nb205. 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 TiO2 in industry.H＋-restacked nanosheets and nanoscrolls peeled from K4Nb6O17 display 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 Nb205. 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 TiO2 in industry.

关 键 词：K4Nb6O17 NANOSHEETS nanoscrolls PHOTODEGRADATION DYE 

分 类 号：O614.113[理学—无机化学]