Simultaneous Synthesis of WO3−x Quantum Dots and Bundle‐Like Nanowires Using a One‐Pot Template‐Free Solvothermal Strategy and Their Versatile Applications |
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| Authors: | Yao Wang Xiaoxia Wang Yuanhong Xu Tao Chen Mengli Liu Fushuang Niu Shuang Wei Jingquan Liu |
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| Affiliation: | 1. Center for Micro/Nano Luminescent and Electrochemical Materials, College of Materials Science and Engineering, Qingdao University, Qingdao, China;2. Institute for Graphene Applied Technology Innovation, Qingdao University, Qingdao, China;3. Laboratory of Fiber Materials and Modern Textiles the Growing Base for State Key Laboratory, Qingdao University, Qingdao, China;4. Collaborative Innovation Center for Marine Biomass Fibers Materials and Textiles of Shandong Province, Qingdao University, Qingdao, China |
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| Abstract: | Tungsten oxide (WO3?x ), a new alternative to conventional semiconductor material, has attracted numerous attentions owning to its widespread potential applications. Various methods have been reported for the synthesis of WO3?x nanostructures such as nanowires or nanodots. However, templates or surfactants are often required for the synthesis, which significantly complicate the process and hinder the broad applications. Herein, one‐pot template/surfactant‐free solvothermal method is proposed to synthesize the WO3?x nanostructures including fluorescent quantum dots (QDs) and bundle‐like nanowires simultaneously. The as‐prepared WO3?x QDs can be well dispersed in aqueous medium, exhibit excellent photoluminescent properties, and show an average size of 3.25 ± 0.25 nm as evidenced by transmission electron microscopy. Meanwhile, the diameter of the WO3?x nanowires is found to be about 27.5 nm as manifested by the scanning electron microscope images. The generation mechanism for these two WO3?x nanostructures are systematically studied and proposed. The WO3?x QDs have been successfully applied in efficient fluorescent staining and specific ferric ion detection. Moreover, the WO3?x nanowires can be utilized as effective dielectric materials for electromagnetic wave absorption. |
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| Keywords: | bundle‐like nanowires electromagnetic wave absorption quantum dots specific ion detection tungsten oxide |
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