中文摘要：

一篇小说荧光灯为 H ₂ PO ₄^- 基于碳 dots/Fe ³⁺ 被设计并且制作合成。碳点被一个确定的一个壶综合热水的方法并且由传播电子显微镜， X 光检查衍射计，紫外力的吸收分光计和荧光分光光度计描绘了。碳 dots/Fe ³⁺ 合成被碳点和 FeCl ₃, 的水的混合获得，它的荧光性质被荧光分光光度计描绘。碳点的荧光被水的 Fe ³⁺ 阳离子熄灭，导致碳 dots/Fe ³⁺ 的低荧光紧张合成。在另一方面， H ₂ PO ₄^- 由化学反应减少了 Fe ³⁺ 的集中并且提高了碳 dots/Fe ³⁺ 的荧光合成。Stern-Volmer 方程被介绍描述在合成的碳 dots/Fe ³⁺ 和 H ₂ PO ₄^-, 和好线性(R ²=0.997) 在 H ₂ 0.4-12 公里的 PO ₄^- 集中。

英文摘要：

A novel fluorescent probe for H_2PO_4~- was designed and fabricated based on the carbon dots/Fe~（3＋） composite. The carbon dots were synthesized by an established one-pot hydrothermal method and characterized by transmission electron microscope, X-ray diffractometer, UV-Vis absorption spectrometer and fluorescence spectrophotometer. The carbon dots/Fe~（3＋） composite was obtained by aqueous mixing of carbon dots and FeCl_3, and its fluorescence property was characterized by fluorescence spectrophotometer. The fluorescence of carbon dots was quenched by aqueous Fe~（3＋） cations, resulting in the low fluorescence intensity of the carbon dots/Fe~（3＋） composite. On the other hand, H_2PO_4~- reduced the concentration of Fe~（3＋） by chemical reaction and enhanced the fluorescence of the carbon dots/Fe~（3＋） composite. The Stern-Volmer equation was introduced to describe the relation between the relative fluorescence intensity of the carbon dots/Fe~（3＋） composite and the concentration of H_2PO_4~-, and a fine linearity（R2=0.997） was found in the range of H_2PO_4~- concentration of 0.4-12 m M.