Abstract: Nickel, prevalently utilized in sectors such as new energy vehicle batteries and electroplating, has brought the environmental challenges, especially in the context of the national dual carbon strategy. The treatment of nickel (Ni²⁺)-enriched wastewater generated by these industries is pivotal for environmental conservation. Traditional Ni²⁺-enriched wastewater treatments, including, ion exchange resins, chemical precipitation, and fluidized bed crystallization granulation technology, often suffer from poor selectivity and the risk of secondary pollution. This study introduces an innovative approach employing a cobalt-based imidazole framework material, ZIF-67, which interacts with Ni²⁺ to form the nickel-cobalt layered double hydroxides (NiCo-LDH), effectively enhancing Ni²⁺ removal. The experiment spans material preparation, characterization, and adsorption performance assessment, supplemented by model analysis and mechanistic investigation. This multifaced approach aims not only to elucidate the adsorption mechanism but also to cultivate students’ research interest, innovative thinking, and practical skills. Tailored for an 8-hour undergraduate comprehensive chemistry laboratory session, this experiment enables students to grasp fundamental principles and analytical methods for Ni²⁺ removal from wastewater. It also solidifies their foundational knowledge, demonstrating the practical application of theoretical concepts in industrial settings. This experiment is designed to bolster students' comprehensive abilities, enhance their scientific literacy, and foster their innovative spirits.

Key words: Imidazolate framework materials, Nickel ion, Adsorption, Comprehensive chemical experiment