Strong metal–support interaction (SMSI) is recognized as a pivotal strategy in hetereogeneous catalysis to prevent the sintering of metal nanoparticles (NPs), but issues including restriction of supports to reducible metal oxides, nonporous architecture, sintering by thermal treatment at >800 °C, and unstable nature limit their practical application. Herein, the construction of non-oxide-derived SMSI nanocatalysts based on highly crystalline and nanoporous hexagonal boron nitride (h-BN) 2D materials was demonstrated via in situ encapsulation and reduction using NaBH₄, NaNH₂, and noble metal salts as precursors. The as-prepared nanocatalysts exhibited robust thermal stability and sintering resistance to withstand thermal treatment at up to 950 °C, rendering them with high catalytic efficiency and durability in CO oxidation even in the presence of H₂O and hydrocarbon simulated to realistic exhaust systems. More importantly, our generic strategy offers a novel and efficient avenue to design ultrastable hetereogeneous catalysts with diverse metal and support compositions and architectures.

中文翻译：

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二维基于氮化硼的强金属-载体相互作用实现的耐烧结纳米催化剂：对旧故事的新认识

强烈的金属-载体相互作用（SMSI）被认为是异相催化中防止金属纳米颗粒（NPs）烧结的关键策略，但问题包括载体对可还原金属氧化物的限制，无孔结构，通过> 800°C的热处理烧结C，性质不稳定，限制了它们的实际应用。本文中，通过使用NaBH ₄，NaNH ₂原位包封和还原，证明了基于高度结晶和纳米多孔六方氮化硼（h-BN）2D材料的非氧化物衍生SMSI纳米催化剂的构建，以及贵金属盐作为前体。所制备的纳米催化剂表现出强大的热稳定性和耐烧结性，可以承受高达950°C的热处理，即使在模拟实际排气系统中存在H ₂ O和碳氢化合物的情况下，也具有很高的催化效率和在CO氧化中的耐久性。更重要的是，我们的通用策略为设计具有多种金属，载体组成和结构的超稳定多相催化剂提供了新颖而有效的途径。