• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Green synthesis of AgI nanoparticle-functionalized reduced graphene oxide aerogels with enhanced catalytic performance and facile recycling
【24h】

Green synthesis of AgI nanoparticle-functionalized reduced graphene oxide aerogels with enhanced catalytic performance and facile recycling

机译：AgI纳米功能化的还原氧化石墨烯气凝胶的绿色合成，具有增强的催化性能和便捷的回收利用

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

AgI nanoparticle-functionalized self-assembled reduced graphene oxide aerogels are constructed using vitamin C as the reducing agent. The obtained aerogels can be used as efficient catalysts for organic dye degradation, reduction of 4-nitrophenol, and synthesis of bis(indolyl)methane. A set of characterizations, including FESEM, TEM, XRD, XPS, Raman, FTIR, optical absorption, and photoluminescence techniques, confirm that the aerogel is formed from ultra-dispersed AgI nanocrystals and the self-assembly of reduced graphene oxide nanosheets into porous hydrogel structures. The obtained aerogels exhibit high photocatalytic degradation ability toward an organic dye (rhodamine-B) because of the high visible light-driven catalytic activity of AgI and the high specific surface area of graphene nanosheets with three-dimensional interconnected pores. The well-wrapped reduced graphene oxide nanosheets on AgI nanostructures could promote the transfer of photo-generated electrons, which not only effectively inhibits the recombination of electrons and holes but also suppresses the photocorrosion of AgI; this promotes the photocatalytic activity and stability. Moreover, these nanostructures show the best catalytic activity for the reduction of 4-nitrophenol to 4-aminophenol in the presence of NaBH4 as a reducing agent. Furthermore, the AgI-reduced graphene oxide aerogel nanocomposites are active catalysts for the synthesis of bis(indolyl) methane under solvent-free conditions. The nanocomposites exhibit excellent catalytic activity and remarkable durability. This study brings a novel approach to the development of multi-responsive reduced graphene oxide aerogels via the co-assembly of various semiconductor nanocomponents for a variety of applications that involve sustained catalytic activity.
机译：使用维生素C作为还原剂构建了AgI纳米功能化的自组装还原氧化石墨烯气凝胶。所获得的气凝胶可以用作有机染料降解，4-硝基苯酚的还原和双（吲哚基）甲烷的合成的有效催化剂。包括FESEM，TEM，XRD，XPS，Raman，FTIR，光吸收和光致发光技术在内的一系列表征证实，气凝胶是由超分散的AgI纳米晶体形成的，并且还原后的氧化石墨烯纳米片可以自组装成多孔水凝胶。结构。由于AgI的高可见光驱动的催化活性和具有三维互连孔的石墨烯纳米片的高比表面积，获得的气凝胶对有机染料（若丹明-B）表现出高的光催化降解能力。 AgI纳米结构上包裹良好的还原型氧化石墨烯纳米片可以促进光生电子的转移，不仅有效地抑制了电子与空穴的复合，而且还抑制了AgI的光腐蚀。这促进了光催化活性和稳定性。此外，在存在作为还原剂的NaBH4的情况下，这些纳米结构显示出将4-硝基苯酚还原为4-氨基苯酚的最佳催化活性。此外，AgI还原的氧化石墨烯气凝胶纳米复合材料是在无溶剂条件下合成双（吲哚基）甲烷的活性催化剂。纳米复合材料具有出色的催化活性和出色的耐久性。通过将各种半导体纳米组分共组装用于涉及持续催化活性的各种应用，这项研究为多响应性还原氧化石墨烯气凝胶的开发带来了一种新颖的方法。

著录项

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