立方空心Ni(OH)_2的制备及其在AA电化学检测中的应用

Synthesis of Ni(OH)_2 cubic hollow architecture and their application in AA detection

Ni(OH)_2作为过渡金属氢氧化物具有储量大,活性高和价格低廉等优点。根据动力学原理,空心结构具有较大的比表面积,良好的内部空间,丰富有序的传递通道,可以有效提高材料的电催化活性。以氧化亚铜为模板设计合成了立方空心Ni(OH)_2电催化材料,并将其用于抗坏血酸(AA)的电化学检测,结果表明立方空心Ni(OH)_2在检测AA的过程中有较高的灵敏度(1 678μA/(cm^2·mM)),较低的检测下限(0.25μM)和可靠的稳定性,证明了立方空心Ni(OH)_2在检测AA方面具有实际应用价值并且为构建高性能电催化剂提供了一种有效的策略。

As a transition metal hydroxide,Ni（OH）2 has the advantages of abundant reserves,low price and high catalytic performance.Inspired by kinetics,the hollow structure has a large specific surface area,good internal space and orderly passageway,which can effectively improve the electrocatalytic activity of the material.In this work,Ni（OH）2 cubic hollow architecture is constructed through coordinating etching and precipitating method.Ni（OH）2 electrode exhibits excellent electrocatalytic activity in terms of high sensitivity（1 678μA/（cm^2·mM））,the lower detection limit（0.25μM）and reliable stability.This work shows that the Ni（OH）2 of the hollow porous architecture has practical application for testing ascorbic acid.The construction provides an effective nanoengineering strategy for high-performance electrocatalysts.