Ink-free printing and rewritable paper have attracted great attention as a potential alternative to current paper prints. Herein, a kind of novel rewritable paper based on silver bromide (AgBr)/polyvinylpyrrolidone (PVP) hybrids is reported, and the system can be erased in dark without heating or oxygen due to the presence of [Formula: see text]. The preparation temperature showed significant effect on the morphology and size of AgBr crystal. When the preparation temperature at 60∘C, the AgBr crystal demonstrated a spherical structure with a size of 0.075[Formula: see text][Formula: see text]m, and the film showed transparency. The addition of noble metal ions can significantly increase the sensitivity to UV irradiation, and the optimum concentration of [Formula: see text] ion was [Formula: see text] M for the reversible property of the rewritable paper. After ten writing–erasing cycles, the repeatable writing performance changed little. With prolonged UV illumination, the erasing time of rewritable paper became longer, and even up to one week, showing great potential for practical applications.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.