“…For the Ni/NiO/CeO 2 /PANI foam, NiO and CeO 2 gain electrons from the negatively charged layer, and their conduction bands reduce. In this case, the height of the p-n junction barrier also decreases ( Φ pn < 0) [30], resulting in the increased electrochemical current. Since the band of the Schottky barrier reduces on one side, | Φ S | > | Φ pn |.…”
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/CeO2/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.
“…For the Ni/NiO/CeO 2 /PANI foam, NiO and CeO 2 gain electrons from the negatively charged layer, and their conduction bands reduce. In this case, the height of the p-n junction barrier also decreases ( Φ pn < 0) [30], resulting in the increased electrochemical current. Since the band of the Schottky barrier reduces on one side, | Φ S | > | Φ pn |.…”
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/CeO2/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.
“…Trace metal ions, particularly Cu 2+ , play crucial roles in the structure and function of many proteins and are vital for metabolic processes. [1][2][3] However, too much Cu 2+ can cause harmful effects such as inhibiting key enzymes, disrupting normal redox reactions and damaging the nervous system. [4][5][6] Cu 2+ can contaminate water sources through various activities, such as mining, farming, manufacturing and waste disposal due to its extensive use in agriculture and industry.…”
Copper ions (Cu2+) play an essential role in various cellular functions, including respiration, nerve conduction, tissue maturation, oxidative stress defense, and iron metabolism. Covalent organic framework (COF) is a class...
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.