WU Wenxin, LIU Meiying, HE Xiaoxu, HE Yunfei. L-cysteine Assisted Reverse Microemulsion Synthesis of Ag2S Nanosulfides[J]. Development and Application of Materials, 2016, 31(2): 85-88. DOI: 10.19515/j.cnki.1003-1545.2016.02.017
Citation: WU Wenxin, LIU Meiying, HE Xiaoxu, HE Yunfei. L-cysteine Assisted Reverse Microemulsion Synthesis of Ag2S Nanosulfides[J]. Development and Application of Materials, 2016, 31(2): 85-88. DOI: 10.19515/j.cnki.1003-1545.2016.02.017

L-cysteine Assisted Reverse Microemulsion Synthesis of Ag2S Nanosulfides

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  • Received Date: December 07, 2015
  • Ag2S nanoparticles with a diameter of 10—50 nm were successfully fabricated at ambient temperature in a TX-100/cyclohexane/hexanol/water inverse microemulsion system in the presence of AgNO3 as a Ag source,Na2S·9H2O as a sulfur source and L-cysteine as the coordinating agent. The factors influencing sizes and morphologies of Ag2S nanoparticles were studied. The as-obtained Ag2S nanocrystals exhibit strong absorption in UV region,with an absorption edge at around 290 nm. Compared with that of bulk Ag2S(1 240 nm),the absorption edge exhibits an obvious blue-shift. The particle sizes and morphologies of Ag2S nanocrystals could be readily controlled by adjusting the molar ratio of Ag+/L-cysteine,the molar ratio of water to surfactant(ω0) as well as the concentration of reactants.
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