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| 可再生锌离子纳米金传感器的制备及其性能研究 |
| Preparation and performance of nano-gold as a renewable sensor for Zn2+ |
| Received:August 29, 2022 |
| DOI： |
| 中文关键词: 金纳米粒子 Fe3O4 罗丹明B Zn2+传感器 荧光响应 循环使用 |
| 英文关键词: gold nanoparticles Fe3O4 rhodamine B Zn2+ sensors fluorescent response recycle |
| 基金项目:国家自然科学基金青年项目(51902141)；江苏省自然科学基金青年项目(BK20191038)；常州市科技计划项目(CJ20210072，CJ20220076)；2021年江苏理工学院研究生实践创新项目(XSJCX21-65)；江苏高校“青蓝工程” |
| Author Name | Affiliation | | WU Juan | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China | | HUA Xiaoyu | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | SUN Guohao | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | HU Peixin | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | HE Qinting | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | REN Fang | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | CHENG Qinglin | School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, Jiangsu, China | | JIANG Wei | School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China |
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| 中文摘要: |
| 以NaBH4还原氯金酸负载在Fe3O4上，制备得到芝麻球状Fe3O4@Au纳米粒子，以Au纳米粒子充当罗丹明B(RB)的荧光淬灭剂得到可循环再生的Zn+离子智能传感器Fe3O4@Au-RB。用高分辨透射电子显微镜(HRTEM)、X射线衍射(XRD)及振动样品磁力计(VSM)对Fe3O4@Au进行了形貌及晶型结构的表征，并研究了Fe3O4@Au-RB对水溶液中Zn2+的传感性能。结果表明，Fe3O4@Au- RB对Zn2+具有良好的敏感性且荧光响应强度随着Zn2+浓度的增加而增强，检测极限为0.42 μmol/L，竞争离子的共存不会影响Fe3O4@Au-RB对Zn2+的选择性；Fe3O4作为磁响应载体，使用后的Fe3O4@Au经外磁场回收，再次负载RB构筑传感器进行循环检测。 |
| 英文摘要: |
| Sesame spherical Fe3O4@Au nanoparticles were prepared by reducing gold chloride hydrate on Fe3O4 with NaBH4, and a recyclable intelligent sensor for Zn2+, Fe3O4@Au-RB, was prepared by using Au nanoparticles as the fluorescence quencher of Rhodamine B (RB). The morphology and crystal structure of Fe3O4@Au were characterized by high resolution transmission electron microscopy (HRTEM), X-ray diffraction (XRD) and vibrating sample magnetometer (VSM). The sensing performance of Fe3O4@Au- RB for Zn2+ in aqueous solution was investigated. The results showed that Fe3O4@Au-RB had good sensitivity to Zn2+ and the intensity of fluorescence response increased with the increase of Zn2+ concentration and the detection limit was 0.42 μmol/L. The coexistence of competing ions did not affect the selectivity of Fe3O4@Au-RB for Zn2+. Owing to the magnetic profile of Fe3O4, Fe3O4@Au could be recovered after use by the external magnetic field and loaded with RB again to construct the sensor for cyclic detection. |
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