title: Photocatalytic Color Switching of Transition Metal Hexacyanometalate Nanoparticles for High-Performance Light-Printable Rewritable Paper.
abstract: Developing efficient photoreversible color switching systems for constructing rewritable paper is of significant practical interest owing to the potential environmental benefits including forest conservation, pollution reduction, and resource sustainability. Here we report that the color change associated with the redox chemistry of nanoparticles of Prussian blue and its analogues could be integrated with the photocatalytic activity of TiO2nanoparticles to construct a class of new photoreversible color switching systems, which can be conveniently utilized for fabricating ink-free, light printable rewritable paper with various working colors. The current system also addresses the phase separation issue of the previous organic dye-based color switching system so that it can be conveniently applied to the surface of conventional paper to produce an ink-free light printable rewritable paper that has the same feel and appearance as the conventional paper. With its additional advantages such as excellent scalability and outstanding rewriting performance (reversibility >80 times, legible time >5 days, and resolution >5 μm), this novel system can serve as an eco-friendly alternative to regular paper in meeting the increasing global needs for environment protection and resource sustainability.
authors.affiliation: National Engineering Research Center for Colloidal Materials and School of Chemistry and Chemical Engineering, Shandong University , Ji'Nan 250100, P. R. China.|Department of Chemistry and UCR Center for Catalysis, University of California , Riverside, California 92521, United States.
authors.forename: Wenshou
authors.initials: W
authors.lastname: Wang
authors.affiliation: Department of Chemistry and UCR Center for Catalysis, University of California , Riverside, California 92521, United States.
authors.forename: Ji
authors.initials: J
authors.lastname: Feng
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Yifan
authors.initials: Y
authors.lastname: Ye
authors.affiliation: Department of Chemistry and UCR Center for Catalysis, University of California , Riverside, California 92521, United States.
authors.forename: Fenglei
authors.initials: F
authors.lastname: Lyu
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Yi-Sheng
authors.initials: YS
authors.lastname: Liu
authors.affiliation: Advanced Light Source, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.
authors.forename: Jinghua
authors.identifier: 0000-0002-8576-2172
authors.initials: J
authors.lastname: Guo
authors.affiliation: Department of Chemistry and UCR Center for Catalysis, University of California , Riverside, California 92521, United States.
authors.forename: Yadong
authors.identifier: 0000-0003-0218-3042
authors.initials: Y
authors.lastname: Yin
keywords: Prussian blue; Prussian blue analogues; nanoparticles; photoreversible color switching; rewritable paper; titania