Nitrogen and sulfur co-doped carbon dots synthesis via one step hydrothermal carbonization of green alga and their multifunctional applications
Nitrogen and sulfur co-doped carbon dots synthesis via one step hydrothermal carbonization of green alga and their multifunctional applications
复制标题
绿藻一步水热碳化合成氮硫共掺杂碳点及其多功能应用
DOI：
10.1016/j.microc.2019.04.015
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发表时间：
2019-06-01
影响因子：
4.8
通讯作者：
Li, Shunxing
中科院分区：
文献类型：
--
作者：
Li, Yuehai;Liu, Fengjiao;Li, Shunxing
以盐渍杜氏藻为原料，通过一步水热反应制备了氮硫共掺杂碳点（N/S-CDs），即无需化学物质。所制得的N/S-CDs平均粒径约为3.2 +/- 0.5 nm，具有良好的光稳定性、低毒性、高水溶性、激发依赖性发射和足够的荧光活性。根据共掺杂氮和硫原子的协同作用，将N/S-CDs作为多功能荧光探针，用于藻类成像、清除1,1 -二苯基-2-picrylhydrazyl自由基和羟基自由基、选择性检测Fe（III）以及可见光诱导的亚甲基蓝和甲基紫的光降解。总之，有害的绿藻华可以转化为多功能的N/ s - cd。
Carbon dots co-doped with nitrogen and sulfur (N/S-CDs) were prepared with the model bloom-forming green alga Dunaliella salina via a one-step hydrothermal reaction, i.e., no chemicals were required. The obtained N/S-CDs with average particle size about 3.2 +/- 0.5 nm exhibited great photostability, low toxicity, high water solubility, excitation-dependent emission, and enough fluorescent activity. According to the synergy effect of the co-doped nitrogen and sulfur atoms, N/S-CDs were used as multifunctional fluorescent probes for algal imaging, scavenging of 1, 1-diphenyl-2-picrylhydrazyl and hydroxyl radicals, selective detection of Fe(III), and visible light-induced photodegradation of methylene blue and methyl violet. In a word, harmful green alga blooms could be transformed into multifunctional N/S-CDs.