Uncertainties in the reactivity of atomically dispersed catalytic metal: Can any single-atom catalyst work like a charm?
Uncertainties in the reactivity of atomically dispersed catalytic metal: Can any single-atom catalyst work like a charm?
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DOI：
10.1016/j.checat.2023.100735
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发表时间：
2023-09
期刊：
影响因子：
--
通讯作者：
Ewa Chukwu;Ming Yang
中科院分区：
文献类型：
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作者：
Ewa Chukwu;Ming Yang
原子分散负载型金属催化剂(ADSMCs)作为一类具有∼100%负载金属分散性的多相催化剂的探索，得益于对单原子催化剂(SACS)的深入研究，其中孤立的金属原子被认为是催化活性的中心。然而，考虑到ADSMC亚家族的多样性，不同的金属-载体协同作用和负载金属原子之间的原子间相互作用应该会进一步丰富SACS的设计穹顶。尽管今天的大多数文献报告都集中在开发具有独特催化功能的单原子物种的催化剂，但清楚地表明单原子物种的反应性存在不确定性的研究结果要少得多，尽管意义重大，其中金属-载体和原子间相互作用的微调将在不改变标称催化剂配方和∼100%金属分散性的情况下导致反应性变化。这一观点讨论了这些不确定性及其对未来工作的影响。
The exploration of atomically dispersed supported metal catalysts (ADSMCs) as a class of heterogeneous catalysts featuring ∼100% supported metal dispersion has greatly benefited from the intensive research on a subset of catalyst platforms named single-atom catalysts (SACs), in which isolated metal atoms are believed to be central to catalytic reactivity. Nevertheless, given the wide variety of ADSMC subfamilies, diverse metal-support synergy and interatomic interactions of the supported metal atoms should further enrich the design dome of SACs. Although most literature reports today focus on developing catalysts to host single-atom species with unique catalytic functions, there are far fewer, albeit significant, findings that clearly suggest uncertainties in the reactivities of single-atom species, where the fine-tuning of metal-support and interatomic interactions would cause reactivity shifts without altering the nominal catalyst formulation and ∼100% metal dispersion. This perspective discusses these uncertainties and their implications for future work.