Dawson型磷钨酸盐可逆变色性质对过氧化氢的光谱检测  

Spectral Detection for Hydrogen Peroxide Based on Reversible Discoloration Properties of Dawson Type Phosphotungstate

作　　者：陆爽 黄梅丽 呼和[1] 许良[1,2] 徐玲 王斌[1,2] Lu Shuang;Huang Meili;Hu He;Xu Liang;Xu Ling;Wang Bin(College of Chemistry and Materials Science,Inner Mongolia Minzu University,Tongliao 028043;Key Laboratory of the Natural Products Chemistry and Functional Molecular Synthesis of Autonomous Region,Tongliao 028000,China)

机构地区：[1]内蒙古民族大学化学与材料学院,内蒙古通辽028043 [2]内蒙古自治区天然产物化学与功能分子合成重点实验室,内蒙古通辽028000

出　　处：《广东化工》2023年第2期185-187,157,共4页Guangdong Chemical Industry

基　　金：内蒙古自治区自然科学基金(2019MS02002);内蒙古自治区直属高校基本科研业务费(GXKY22049);内蒙古自治区高等学校“青年科技英才支持计划”(NJYT-18-B22);内蒙古民族大学科学研究基金(NMDYB19051)

摘　　要：通过水溶液回流法制备了Dawson型磷钨酸盐K_(6)P_(2)W_(18)O_(62)(P_(2)W_(18)),利用X-射线衍射、拉曼光谱、红外光谱、循环伏安法对P_(2)W_(18)的结构及电化学性质进行表征。在还原电位-0.85 V下,P_(2)W_(18)溶液由无色变为蓝色,在可见区的吸收峰增强;相反,在氧化剂过氧化氢的作用下,P_(2)W_(18)溶液的蓝色褪去,在可见区的吸收峰减弱。以最大吸光度对过氧化氢浓度作图,得到P_(2)W_(18)溶液对过氧化氢检测的线性方程、线性范围及检出限。The Dawson type phosphotungstate K_(6)P_(2)W_(18)O_(62)(P_(2)W_(18))was prepared by aqueous reflux method.And the structure and electrochemical properties of P_(2)W_(18)were characterized by X-ray diffraction,Raman spectroscopy,infrared spectroscopy and cyclic voltammetry.The P_(2)W_(18)solution changed from colorless to blue,accompanied by the enhancement of the absorption peak in visible light region when applied a reduction potential of-0.85 V.On contrary,under the action of hydrogen peroxide,the blue colour of P_(2)W_(18)solution disappeared and accompanied by the weakening of the absorption peak in visible light region.The linear equation,linear range and detection limit of P_(2)W_(18)solution for the detection of hydrogen peroxide were obtained by plotting the concentration of hydrogen peroxide with the maximum absorbance.

关 键 词：多金属氧酸盐 磷钨酸盐 电致变色 过氧化氢 光谱检测 

分 类 号：O611.3[理学—无机化学]