吉林大学学报(理学版) ›› 2022, Vol. 60 ›› Issue (4): 985-992.

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 Dawson型磷钼酸盐对水合肼和过氧化氢的可逆光谱检测

包英1, 陆爽1, 王志强1, 王晓红1,  许良1,2, 王斌1,2, 刘宗瑞1   

  1. 1. 内蒙古民族大学 化学与材料学院, 内蒙古 通辽 028000; 
    (2. 天然产物化学及功能分子合成自治区重点实验室, 内蒙古 通辽 028000
  • 收稿日期:2021-07-29 出版日期:2022-07-26 发布日期:2022-07-26
  • 通讯作者: 王斌 E-mail:jluwangbin09@163.com

Reversible Spectral Detection for N2H4·H2O and H2O2 by Dawson Type Phosphomolybdate

BAO Ying1, LU Shuang1, WANG Zhiqiang1, WANG Xiaohong1, XU Liang1,2, WANG Bin1,2,  LIU Zongrui1   

  1. 1.  College of Chemistry and Materials Science,  Inner Mongolia University for Nationalities,  Tongliao 028000,  Inner Mongolia Autonomous Region, China; 
    2. Key Laboratory of the Natural Products Chemistry and Functional Molecular Synthesis of Autonomous Region,  Tongliao 028000, Inner Mongolia Autonomous Region, China
  • Received:2021-07-29 Online:2022-07-26 Published:2022-07-26

摘要: 基于Dawson型磷钼酸盐(NH4)6P2Mo18O62(P2Mo18)可逆的氧化还原及变色性质, 利用紫外-可见光谱可实现P2Mo18溶液对水合肼(N2H4·H2O)及过氧化氢(H2O2)的可逆检测. 在P2Mo18溶液中加入等量N2H4·H2O后, P2Mo18被还原, 溶液由浅黄色变为蓝绿色, 随着N2H4·H2O浓度的增加, 在可见区400~800 nm的吸收峰逐渐增强;  在还原态P2Mo18溶液中加入等量H2O2后,  还原态P2Mo18重新被氧化, 溶液由蓝绿色变为浅黄色, 随着H2O2浓度的增加, 在可见区的吸收峰逐渐降低. 以750 nm处的吸光度对N2H4·H2OH2O2的浓度做图, 获得紫外-可见光谱法对N2H4·H2OH2O2检测的线性方程、  线性检测范围及检出限, 并利用紫外-可见动力学法和光谱法对该探针的响应时间、   可逆性及抗干扰性进行研究. 结果表明:  该方法对N2H4·H2OH2O2的检出限分别为7.24×10-5,2.15×10-4 mmol/L; 对N2H4·H2OH2O2检测的响应时间分别为44.8,23.9 min. 

关键词: 多金属氧酸盐; 水合肼; 刺激响应; , 可逆变色性质; 光谱检测

Abstract: The reversible  detection for hydrazine hydrate (N2H4·H2O) and hydrogen peroxide (H2O2) in P2Mo18 solution could be realized by ultraviolet-visible (UV-Vis) spectrum based on the reversible redox and allochroic properties of Dawson type phosphomolybdate (NH4)6P2Mo18O62(P2Mo18. After adding the same  amount of N2H4·H2O  to P2Mo18 solution, the P2Mo18 was reduced,  and the solution changed from light yellow to blue-green. The absorption peak in the visible region of 400—800 nm gradually increaseed with the increase of N2H4·H2O concentration. After adding the same amount of H2O2  to the reduced P2Mo18 solution, the reduced P2Mo18 was oxidized again and the solution changed from blue-green to light yellow. The absorption peak in the visible region gradually decreased with the increase of H2O2 concentration. The linear equation, linear detection range and detection limit of N2H4·H2O and H2O2 were obtained by drawing concentrations of N2H4·H2O and H2O2 with the absorbance at 750 nm. The response time, reversibility and anti-interference of the probe were studied by UV-Vis kinetic method  and spectral method. The results show that the detection limits for N2H4·H2O and H2O2 are 7.24×10-5, 2.15×10-4 mmol/L,  the response time for N2H4·H2O  and H2O2 detection are 44.8,23.9 min, respectively.

Key words:  , polyoxometalate; hydrazine hydrate; stimuli-response; reversible allochroic property; spectral detection

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