A h-BCN for Electrochemical Sensor of Dopamine and Uric Acid
Yun-Shuai Bi, Bo Liu, Xuying Liu, Ying Qin, Ben-Xue Zou
Abstract
A hexagonal boron carbon nitride hybrid (h-BCN) is developed by in situ high-temperature solid-state reaction and subsequent chemical reduction with hydrazine. The XRD and TEM results show that the h-BCN features interlayered structures with two characteristic <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mi>d</mml:mi></mml:math>-spacing of 0.33 and 0.21 nm. The obtained h-BCN exhibits significant electrochemical sensor for dopamine and uric acid. The cyclic voltammetric and amperometric experiments revealed a good linear relationship between current densities and concentrations of dopamine (DA) of 10-300 μ M and uric acid (UA) of 10-500 μ M, with high sensitivities of 0.14 μ A/ μ M and 0.32 μ A/ μ M and detection limits of 5 μ M and 2 μ M, respectively.