An ionic liquid promoted microwave-hydrothermal route towards highly photoluminescent carbon dots for sensitive and selective detection of iron(III)

作者：Liu, Ruili^*; Gao, Mengping; Zhang, Jing; Li, Zhilian; Chen, Jinyang; Liu, Ping; Wu, Dongqing

来源：RSC Advances, 2015, 5(31): 24205-24209.

DOI：10.1039/c5ra00089k

• FLUORESCENT SENSING PLATFORM
• LABEL-FREE DETECTION
• GRAPHENE QUANTUM DOTS
• STEP GREEN SYNTHESIS
• POLYMER NANODOTS
• NITROGEN
• BIOMASS
• NANOPARTICLES
• PRETREATMENT
• CHLORIDE

A facile approach towards photoluminescent carbon dots (CDs) has been developed by the microwave-hydrothermal treatment of rice straw in the mixed solvent of water and ionic liquid (1-allyl-3-methylimidazolium chloride, AMIM-Cl). AMIM-Cl helps to dissolve the cellulose in straw and provides nitrogen atoms for the resulting heteroatom doped CDs. As a result, the straw produced CDs possess a spherical morphology and a high quantum yield of about 22.58%, which is higher than the other CDs prepared from biomass. In addition, the CDs can serve as an effective label-free fluorescent sensor for the detection of Fe(III) ions with a very low detection limit of 200 nM.

• 出版日期2015
• 单位上海交通大学; 上海大学