School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China.
School of Chemistry and Chemical Engineering, Institute for Energy Research, Jiangsu University, Zhenjiang 212013, PR China.
Talanta. 2016 Aug 15;156-157:257-264. doi: 10.1016/j.talanta.2016.05.004. Epub 2016 May 6.
The Au/BiOCl composites have been prepared by a facile one-pot ethylene glycol (EG) assisted solvothermal reaction in the presence of ionic liquid 1-hexadecyl-3-methylimidazolium chloride ([C16mim]Cl). During the synthesis procedure, the [C16mim]Cl has been used as Cl source, solvent of this system, and dispersing agent to effectively disperse Au on the surface of BiOCl. The as-prepared samples have been systematically characterized by multiple instruments to investigate the structure, morphology, and photoelectrochemical properties. According to the photoelectrochemical data, the Au/BiOCl composites exhibit better photoelectrochemical performance toward the detection of 4-chlorophenol than that of the pure BiOCl. The photocurrent response of Au/BiOCl modified electrode is high and stable under light irradiation. The proposed Au/BiOCl modified electrode shows a wide linear response ranging from 0.16 to 20mgL(-1) with detection limit of 0.05mgL(-1). It indicates a dramatically promising application of bismuth oxyhalides in photoelectrochemical detection. It will be expected that the present study may be lightly extended to the monitor of other organic pollutants by photoelectrochemical detection of the Au/BiOCl composites.
采用简便的一锅乙二醇（EG）辅助溶剂热反应，在离子液体 1-十六烷基-3-甲基咪唑氯盐([C16mim]Cl)存在的条件下制备了 Au/BiOCl 复合材料。在合成过程中，[C16mim]Cl 既被用作 Cl 源，又是该体系的溶剂，同时还作为分散剂，以有效将 Au 分散在 BiOCl 的表面。通过多种仪器对所制备的样品进行了系统的表征，以研究其结构、形貌和光电化学性能。根据光电化学数据，与纯 BiOCl 相比，Au/BiOCl 复合材料在检测 4-氯苯酚方面表现出更好的光电化学性能。在光照下，Au/BiOCl 修饰电极的光电流响应高且稳定。所提出的 Au/BiOCl 修饰电极在 0.16 至 20mgL(-1) 的宽线性响应范围内具有检测限为 0.05mgL(-1)。这表明了在光电化学检测中，卤氧化铋具有很大的应用前景。预计本研究可以通过 Au/BiOCl 复合材料的光电化学检测，轻松扩展到其他有机污染物的监测。
