Wang Zhaofeng, Liu Jingjing, Wang Weilin, Wei Zichao, Wang Fan, Gong Peiwei, Wang Jinqing, Li Na, Liu Bin, Zhang Zhengguo, Wang Weixing, Sun Luyi
Polymer Program, Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA.
J Mater Chem B. 2017 Jun 28;5(24):4679-4689. doi: 10.1039/c7tb00811b. Epub 2017 May 23.
In this work, carbon quantum dot grafted silica nanoparticles (silica-C NPs) are directly synthesized from rice husk biomass with high yield. The rice husk derived silica-C NPs exhibit outstanding features, including ease of surface modification, high water dispersibility, and biocompatibility. Due to the covalent decoration of the carbon framework, the wide band gap amorphous silica is endowed intense and unique photoluminescence, which can be well controlled by further adjustments. Detailed investigations suggest that the silica-C NPs have the inherent advantages of both silica and carbon quantum dots, which ideally addresses the widely recognized issues of conventional silica-based photoluminescent nanomaterials for biomedical applications. In addition to creating a novel silica-based nanostructure with prominent performances, this work achieves the comprehensive utilization of rice husk biomass, which shows significant economic and environmental benefits.
在这项工作中，碳量子点接枝二氧化硅纳米颗粒（二氧化硅-C纳米颗粒）由稻壳生物质直接高产合成。稻壳衍生的二氧化硅-C纳米颗粒具有突出的特性，包括易于表面改性、高水分散性和生物相容性。由于碳骨架的共价修饰，宽带隙无定形二氧化硅具有强烈且独特的光致发光特性，通过进一步调整可得到良好控制。详细研究表明，二氧化硅-C纳米颗粒兼具二氧化硅和碳量子点的固有优势，理想地解决了传统二氧化硅基光致发光纳米材料在生物医学应用中广泛认可的问题。除了创建具有卓越性能的新型二氧化硅基纳米结构外，这项工作还实现了稻壳生物质的综合利用，展现出显著的经济和环境效益。
