The heterostructures of In2O3 nanoparticle loaded on anatase TiO2 nanocube with exposed （001） facet （In2O3/TiO2-nanocube） were fabricated via a two-step hydrothermal process. The crystal phase, morphology, mi- cro...The heterostructures of In2O3 nanoparticle loaded on anatase TiO2 nanocube with exposed （001） facet （In2O3/TiO2-nanocube） were fabricated via a two-step hydrothermal process. The crystal phase, morphology, mi- cro-stnmture and photo-absorption property of the products were characterized by FESEM, TEM, XRD, and UV-Vis diffuse reflectance spectroscopy. The results showed that the percentage of exposed （001） facet of TiO2 nanocube was about 33%. In2O3 nanoparticles were successfully decorated on the surface of TiO2 nanocube to form the In2O3/TiO2 heterojtmction. Photocurrent measurements confirmed that （001） faceted surface was advantageous for the charge carrier migration and separation in the composites. In comparison with bare TiO2 nanocube and In2O3/TiO2-nanoparticle, the In2O3/TiO2-nanocube heterostructures exhibited enhanced activity toward the degradation of rhodamine B and tetracycline under visible light irradiation, which was attributed to the synergic effect of In2O3/TiO2 heterojunction and the exposure of （001） facet.展开更多
基金Supported. by the National Natural Science Foundation of China（No.21103054）, the Natural Science Foundation of Fujian Province of China（Nos.2017J01014, 2012J05024） and the Promotion Program for Young and Middle-aged Teachers in Science and Technology Research of Huaqiao University, China（No.ZQN-PY206）.
文摘The heterostructures of In2O3 nanoparticle loaded on anatase TiO2 nanocube with exposed （001） facet （In2O3/TiO2-nanocube） were fabricated via a two-step hydrothermal process. The crystal phase, morphology, mi- cro-stnmture and photo-absorption property of the products were characterized by FESEM, TEM, XRD, and UV-Vis diffuse reflectance spectroscopy. The results showed that the percentage of exposed （001） facet of TiO2 nanocube was about 33%. In2O3 nanoparticles were successfully decorated on the surface of TiO2 nanocube to form the In2O3/TiO2 heterojtmction. Photocurrent measurements confirmed that （001） faceted surface was advantageous for the charge carrier migration and separation in the composites. In comparison with bare TiO2 nanocube and In2O3/TiO2-nanoparticle, the In2O3/TiO2-nanocube heterostructures exhibited enhanced activity toward the degradation of rhodamine B and tetracycline under visible light irradiation, which was attributed to the synergic effect of In2O3/TiO2 heterojunction and the exposure of （001） facet.
