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Ag+/MPTMS/PMHS-mediated two-step acid–base synthesis of hybrid materials with embedded nanosilver

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Abstract

A newly designed two-step acid–base sol–gel method for the synthesis of Ag-doped hybrid materials with tailored physicochemical properties is presented. In the proposed protocol, Ag+ is in situ reduced by Si–H bonds of polymethylhydrosiloxane (PMHS) in the absence of an additional reductant. Hydrolysis of the alkyloxysilane groups of tetraethoxysilane and PMHS or 3-mercaptopropyltrimethoxysilane (MPTMS) can be promoted by the release of H+ due to complexation between Ag+/Ag0 and thiol groups. Newly formed nanosilver can be fully stabilized by a sol–gel reaction and embedded parallel to the skeletons. The MPTMS dosage used during synthesis has a significant impact on the textural characteristics of the final products. The properties of as-prepared materials are characterized by Brunauer-Emmett-Teller analysis, transmission electron microscopy, and X-ray photoelectron spectroscopy. This study presents a novel method for the synthesis of Ag-doped hybrid materials using the synergetic effects of common organosilane precursors.

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Acknowledgments

We gratefully acknowledge the financial support of the National Natural Science Foundation of China (No. 21243013), the Natural Science Foundation of Liaoning Province (No. 201202014), and the Opening Foundation of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry of Jilin University (No. 2013-07).

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Authors and Affiliations

  1. Faculty of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian, 116034, China

    Xu Shao, Shang-Ru Zhai, Bin Zhai & Qing-Da An

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  1. Xu Shao
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  2. Shang-Ru Zhai
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  3. Bin Zhai
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  4. Qing-Da An
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Correspondence to Shang-Ru Zhai or Qing-Da An.

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Shao, X., Zhai, SR., Zhai, B. et al. Ag+/MPTMS/PMHS-mediated two-step acid–base synthesis of hybrid materials with embedded nanosilver. J Sol-Gel Sci Technol 66, 264–273 (2013). https://doi.org/10.1007/s10971-013-3003-z

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