以聚苯乙烯微球的单层和双层胶体晶体为模板,通过模板电沉积银,移除模板后得到单层和双层银通孔阵列,并用作基于增强光透射(EOT)的等离子传感器.结果表明,与单层银通孔阵列相比,双层通孔阵列的传感灵敏度和品质因子都有很大提升,最高分别达到559.71 nm/RIU(RIU:Refractive index unit)和14.28 RIU^(-1).
Ag-based nanocatalysts exhibit good catalytic activity for the electrochemical reduction of organic halides. Ag-Ni alloy nanoparticles（NPs） were facilely prepared by chemical reduction, and the as-prepared nanocatal...
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Ag-based nanocatalysts exhibit good catalytic activity for the electrochemical reduction of organic halides. Ag-Ni alloy nanoparticles（NPs） were facilely prepared by chemical reduction, and the as-prepared nanocatalysts were characterized by X-ray diffraction, ultraviolet-visible spectroscopy, transmission electron microscopy and energy-dispersive X-ray spectroscopy. The electrocatalytic activity of Ag-Ni NPs for benzyl chloride reduction was studied in organic medium using cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy. The results show that the addition of Ni element can obviously decrease the size of Ag-Ni NPs, shift the reduction peak potential（φp） of benzyl chloride positively, and increase the catalytic activity of Ag-Ni NPs. However, when the Ni content reaches a certain value, the catalytic activity of Ag-Ni NPs decreases. Meanwhile, the synergistic catalytic effect of Ag-Ni NPs was also discussed.
苯硫酚广泛应用于化学工业中,但同时苯硫酚也是一类高毒性的环境污染物,其能不断在生物体内累积,而严重危害生态环境及人体健康。因此,高灵敏、高选择地检测苯硫酚在化学、生物和环境等领域具有十分重要的意义。基于此,我们将理性设计和高通量筛选技术相结合,发展了一种新型近红外苯硫酚荧光探针—CCP1。实验研究表明,CCP1溶液中加入苯硫酚后,最大发射波长706 nm处的荧光强度增加30倍,检测限为34 n M,而脂肪族硫醇、硫化氢基本无干扰。此外,该探针具有激发/发射波长在近红外区,良好的细胞膜通透性和较低的细胞毒性等优点,并首次实现了活动物模型中苯硫酚的可视化检测。
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