Zhao Minggang, He Yichang, Dong Xiaotong, Pang Kun, He Qian, Ma Ye, Cui Hongzhi
School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China.
School of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China.
Materials (Basel). 2023 Nov 14;16(22):7154. doi: 10.3390/ma16227154.
Detecting heavy metals in seawater is challenging due to the high salinity and complex composition, which cause strong interference. To address this issue, we propose using a multistage energy barrier as an electrochemical driver to generate electrochemical responses that can resist interference. The Ni-based heterojunction foams with different types of barriers were fabricated to detect Cr(VI), and the effects of the energy barriers on the electrochemical response were studied. The single-stage barrier can effectively drive the electrochemical response, and the multistage barrier is even more powerful in improving sensing performance. A prototype Ni/NiO/CeO/Au/PANI foam with multistage barriers achieved a high sensitivity and recovery rate (93.63-104.79%) in detecting seawater while resisting interference. The use of multistage barriers as a driver to resist electrochemical interference is a promising approach.
由于海水的高盐度和复杂成分会产生强烈干扰，检测海水中的重金属具有挑战性。为了解决这个问题，我们提出使用多级能量势垒作为电化学驱动源来产生能够抵抗干扰的电化学反应。制备了具有不同类型势垒的镍基异质结泡沫来检测Cr(VI)，并研究了能量势垒对电化学反应的影响。单级势垒能够有效地驱动电化学反应，而多级势垒在提高传感性能方面更加强劲。一种具有多级势垒的原型镍/氧化镍/氧化铈/金/聚苯胺泡沫在检测海水时实现了高灵敏度和回收率（93.63-104.79%），同时能够抵抗干扰。使用多级势垒作为驱动源来抵抗电化学干扰是一种很有前景的方法。
