The investigation into the development of an active transition-metal oxide catalyst with controllable morphology for the degradation of volatile organic compounds (VOCs) is a subject of considerable importance and warrants further exploration. In this study, ZIF-67 was prepared and employed as a sacrificial template, with varying quantities of Cu ions incorporated to synthesize layered copper-cobalt double oxide (CuCo-LDO) featuring a modifiable surface state. A comprehensive characterization of the CuCo-LDO catalysts was conducted, encompassing structural properties, morphology, surface chemical state, and redox properties, utilizing a range of analytical techniques. Subsequent evaluations included testing the catalytic activity for toluene oxidation and assessing stability performance. The results revealed that differing Cu contents played a pivotal role in inducing changes in the morphology and structure of CuCo-LDO, thereby significantly influencing its oxidation activity towards toluene. Notably, the flower-like structure of 3CuCo-LDO (Cu% = 20.14 wt.%) exhibited outstanding toluene oxidation activity attributable to its unique structure and composition. This research contributes novel insights to the design of highs-performance catalysts targeting volatile organic compounds.

中文翻译：

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通过 ZIF-67 牺牲模板设计和优化 CuCo-LDO 催化剂以增强甲苯氧化：形态、结构和催化活性的综合研究

开发具有可控形貌的活性过渡金属氧化物催化剂来降解挥发性有机化合物（VOC）的研究是一个非常重要的课题，值得进一步探索。在这项研究中，制备了 ZIF-67 并用作牺牲模板，掺入不同数量的铜离子，合成具有可修饰表面状态的层状铜钴双氧化物 (CuCo-LDO)。利用一系列分析技术对 CuCo-LDO 催化剂进行了全面表征，包括结构特性、形态、表面化学状态和氧化还原特性。随后的评估包括测试甲苯氧化的催化活性并评估稳定性能。结果表明，不同的Cu含量对引起CuCo-LDO形态和结构的变化起着关键作用，从而显着影响其对甲苯的氧化活性。值得注意的是，3CuCo-LDO (Cu% = 20.14 wt.%) 的花状结构由于其独特的结构和组成而表现出出色的甲苯氧化活性。这项研究为针对挥发性有机化合物的高性能催化剂的设计提供了新颖的见解。