Multivariate Analysis on the Structure–Activity Parameters for Nano-CuOx-Catalyzed Reduction Reactions
Multivariate Analysis on the Structure–Activity Parameters for Nano-CuOx-Catalyzed Reduction Reactions
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DOI：
10.1021/acsanm.3c04897
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发表时间：
2024-01
影响因子：
5.9
通讯作者：
Lorianne R. Shultz-Johnson;Matthew Chang;Neil N. Bisram;J. T. Bryant;Christopher P. Martin;Azina Rahmani-Azina
中科院分区：
文献类型：
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作者：
Lorianne R. Shultz-Johnson;Matthew Chang;Neil N. Bisram;J. T. Bryant;Christopher P. Martin;Azina Rahmani-Azina
了解催化活性增强的来源对多相催化剂的设计至关重要。这对于非贵金属基催化剂尤其重要，特别是金属氧化物，它们最近成为许多热催化过程的可行候选者。对于使用金属氧化物纳米颗粒的热催化还原/氢化，催化性能的增强通常归因于表面积的增加和氧空位的存在。同时，诱导氧空位的处理也会影响材料的其他性能，如微应变、结晶度、氧化态和颗粒形状。本文采用多元统计分析的方法研究了CuO纳米颗粒的材料性质对硝基芳香族和亚甲基蓝还原速率的影响。微应变、形状和Cu(0)原子百分比对这些反应的影响得到了证明；此外，提出了一种将材料性能参数与催化效率相关联的方案，并强调了催化剂设计对这些广泛应用的探针反应的重要性。
Understanding the origin of enhanced catalytic activity is critical to heterogeneous catalyst design. This is especially important for non-noble metal-based catalysts, notably metal oxides, which have recently emerged as viable candidates for numerous thermal catalytic processes. For thermal catalytic reduction/hydrogenation using metal oxide nanoparticles, enhanced catalytic performance is typically attributed to an increased surface area and the presence of oxygen vacancies. Concomitantly, the treatments that induce oxygen vacancies also impact other material properties, such as the microstrain, crystallinity, oxidation state, and particle shape. Herein, multivariate statistical analysis is used to disentangle the impact of material properties of CuO nanoparticles on catalytic rates for nitroaromatic and methylene blue reduction. The impact of the microstrain, shape, and Cu(0) atomic percent is demonstrated for these reactions; furthermore, a protocol for correlating material property parameters to catalytic efficiency is presented, and the importance of catalyst design for these broadly utilized probe reactions is highlighted.