Phosphoric acid and pH sensors based on polyaniline films
Phosphoric acid and pH sensors based on polyaniline films
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DOI：
10.1016/j.cap.2009.05.030
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发表时间：
2010-01-01
影响因子：
2.4
通讯作者：
Issa, R. M.
中科院分区：
文献类型：
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作者：
Ayad, M. M.;Salahuddin, N. A.;Issa, R. M.
采用聚苯胺（PANI）包覆石英晶体微天平（QCM）电极，建立了液相测定磷酸(H（3)PO(4)）的方法。该传感机制是基于聚苯胺涂层在QCM电极上与不同浓度的酸相互作用时产生振荡频率变化这一事实。这是在随后的聚苯胺膜在酸和氨溶液中的重掺杂-脱掺杂过程中分别进行的。这是在不同的酸溶液中连续还原的结果。QCM传感器表现出对酸的快速响应，具有良好的可逆性。不同浓度的H(3)和PO(4)对传感器有线性响应
Polyaniline (PANI)-chemically coated the electrode of quartz-crystal microbalance (QCM) has been developed for the determination of phosphoric acid (H(3)PO(4)) in the liquid phase. The sensing mechanism is based oil the fact that the QCM devices produce a change in the oscillating frequency when the PANI coating the electrode of QCM interacts with different concentration of the acid. This was made during the subsequent redoping-dedoping processes of the PANI film in acid and ammonia solutions, respectively. Also, this was made during the Successive redoping in different acid solutions. The QCM sensor demonstrated a rapid response to the acid with an excellent reversibility. A linear response of the sensor for different concentrations of H(3)PO(4) Was found in region of