• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Non-toxic luminescent Au Nanoclusters@Montmorillonite nanocomposites powders for latent fingerprint development
【24h】

Non-toxic luminescent Au Nanoclusters@Montmorillonite nanocomposites powders for latent fingerprint development

机译：无毒发光Au纳米蛋白@ Montmorillonite纳米复合材料粉末潜在指纹开发

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Non-toxic Au nanoclusters@montmorillonite (AuNCs@MMT) nanocomposites with strong red fluorescence are prepared by a microwave (MW)-assisted synthesis method and immobilize Au NCs into sodium MMT clay matrix via electrostatic interaction. Due to the immobilization of Au NCs in the layered structure of the MMT clay matrix, the formative AuNCs@MMT nanocomposites show high emission, stable chemical features and less toxicity. The obtained Au NCs and AuNCs@MMT nanopowders were characterized by using UV-visible absorption spectroscopy, fluorescence spectroscopy, infrared spectroscopy, TEM/HRTEM, SEM and XRD etc. to depict their sizes, microstructures and optical features. Due to their environmentally friendly preparation, time-saving procedure, user-friendly operation, low cost, efficient UV-visible radiation-dependent photoluminescence and good affinity with finger residues, the as-synthesized AuNCs@MMT nanopowders are employed as a alternative florescent developing reagent for enhancing latent fingerprints deposited on various object surfaces (such as glass, porcelain enamel, stainless steel, painted metal, plastic products, weighing papers etc.) for individual identification. As results, the enhanced fingerprints with clear patterns and satisfactory ridge details were obtained by using as-prepared AuNCs@MMT nanopowders. At the same time, intensively red fluorescence as well as good contrast without background staining of developed prints demonstrated great advantages for surfaces with multicolour. Because of their good sensitivity, non-toxicity and strong resistance to background interference, the as-prepared fluorescent nanocomposites are an actual alternative to conventional powdering reagents, which may find potential application in forensic detection.
机译：无毒的Au纳米团簇@蒙脱土（AuNCs @ MMT）纳米复合材料具有很强的红色荧光是由微波（MW）辅助的合成方法制备的，并通过静电相互作用固定的Au纳米晶成钠MMT粘土基质。由于金NC的在MMT粘土基质的分层结构固定化，形成性AuNCs @蒙脱土纳米复合材料显示出高的发射，稳定的化学特性和更低的毒性。通过使用紫外 - 可见吸收光谱，荧光光谱，红外光谱，TEM / HRTEM，SEM和XRD等描绘它们的大小，微结构和光学特征所获得的金NCS和AuNCs @ MMT纳米粉末进行表征。由于它们的环境友好的制备，节省时间的过程中，用户友好的操作，低成本，高效率UV可见辐射依赖性的光致发光，并用手指残基良好的亲和力，所合成的AuNCs @ MMT纳米粉末被用作一个替代荧光显影试剂用于增强沉积的各种物体的表面（如玻璃，搪瓷，不锈钢，涂漆的金属，塑料制品，称量纸等），用于个体识别上潜指纹。作为结果，通过使用所制备的AuNCs @ MMT纳米粉末获得具有清晰的图案和令人满意的脊细节增强的指纹。与此同时，密集的红色荧光以及不发达国家的打印背景染色良好的对比度表现出与多色面很大的优势。由于它们的良好的灵敏度，无毒性和对背景干扰能力强的，所制备的纳米复合材料的荧光对常规粉化试剂，其可以发现在法医检测潜在的应用的实际替代品。

著录项

  • 来源
    《RSC Advances》 |2017年第79期|共7页
  • 作者

    Yu Yanlin; Yan Lei; Xia Zhining;

  • 作者单位

    Southwest Univ Polit Sci &

    Law Sch Criminal Invest Forens Sci Engn Res Ctr Univ Chongqing Chongqing 401120 Peoples R China;

    Southwest Univ Polit Sci &

    Law Sch Criminal Invest Forens Sci Engn Res Ctr Univ Chongqing Chongqing 401120 Peoples R China;

    Chongqing Univ Sch Bioengn Chongqing 400044 Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号