Key Laboratory of Eco-textiles, Jiangnan University, Wuxi 214122, China.
Key Laboratory of Textile Fabric, Anhui Polytechnic University, Wuhu, Anhui 241000, China.
Carbohydr Polym. 2017 Sep 15;172:93-101. doi: 10.1016/j.carbpol.2017.04.086. Epub 2017 Apr 30.
Nitrogen-doped carbon dots (N-CDs) were synthesized through a facile hydrothermal method using citric acid (CA) and ethanediamine (EDA) as precursors. A green and simple fluorescence biosensor was obtained by biosynthesis of bacterial cellulose (BC)/N-CDs. As-prepared N-CDs with rich functional groups exhibited a blue emission under the excitation wavelength of 350nm. Biosynthesis of BC/N-CDs was analyzed by Digital photos, Fourier Transform Infrared (FTIR) and Transmission Electron Microscopy (TEM). The results indicated that N-CDs were successfully anchored on BC. As-prepared BC/N-CDs were applied to the detection of Fe in aqueous solution. Spectroscopic data revealed that, fluorescence materials prepared presented an sensitive response to Fe in acceptable range of 0.5-600μM and ultralow detection limit of 84nM as a fluorescence sensor. Furthermore, the results also indicate that a novel BC/N-CDs composite has great potential for the detection of Fe ions based on membrane fluorescence materials.
氮掺杂碳点（N-CDs）通过简便的水热法合成，使用柠檬酸（CA）和乙二胺（EDA）作为前体。通过细菌纤维素（BC）/N-CDs 的生物合成获得了一种绿色简单的荧光生物传感器。具有丰富官能团的 N-CDs 在 350nm 的激发波长下显示出蓝色发射。通过数码照片、傅里叶变换红外（FTIR）和透射电子显微镜（TEM）分析了 BC/N-CDs 的生物合成。结果表明，N-CDs 成功地锚定在 BC 上。制备的 BC/N-CDs 被应用于水溶液中 Fe 的检测。光谱数据表明，所制备的荧光材料对 0.5-600μM 范围内的 Fe 表现出敏感响应，作为荧光传感器的检测限低至 84nM。此外，结果还表明，基于膜荧光材料，新型 BC/N-CDs 复合材料在 Fe 离子检测方面具有很大的潜力。
