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Layered Ferrihydrite and BN Nanoparticle Heterostructures Doped with Ag for CO2 Hydrogenation
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2024-04-22 , DOI: 10.1021/acsanm.4c00718 Anton Konopatsky 1, 2 , Alexander Kustov 2 , Nikolay Evdokimenko 2 , Anastasiya Shesterkina 2 , Liubov A. Varlamova 2 , Tatyana Teplyakova 2, 3 , Denis Leybo 4 , Liubov Yu. Antipina 2 , Pavel B. Sorokin 2 , Xiaosheng Fang 5 , Dmitry V. Shtansky 2
ACS Applied Nano Materials ( IF 5.3 ) Pub Date : 2024-04-22 , DOI: 10.1021/acsanm.4c00718 Anton Konopatsky 1, 2 , Alexander Kustov 2 , Nikolay Evdokimenko 2 , Anastasiya Shesterkina 2 , Liubov A. Varlamova 2 , Tatyana Teplyakova 2, 3 , Denis Leybo 4 , Liubov Yu. Antipina 2 , Pavel B. Sorokin 2 , Xiaosheng Fang 5 , Dmitry V. Shtansky 2
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Iron-based catalysts are gaining increased attention as promising and cost-effective materials for CO2 recycling. Their properties can be tuned by careful selection of the appropriate synthesis route, substrate, and catalytic system components. For the first time, a nanostructured material consisting of heterostructures of layered ferrihydrite (Fh) and hexagonal boron nitride (h-BN) nanoparticles has been obtained. Subsequent annealing ensures a uniform distribution of Fe nanoparticles (FeNPs) on the h-BN surfaces. Small Ag additions to the system lead to a significant decrease in the average size of FeNPs, presumably due to a seeding mechanism. Catalytic tests have shown that a low Ag content has a positive effect on the catalytic activity. Stability testing has demonstrated that the catalytic properties of the Fh/BN system improve over time, as does selectivity toward high-value-added hydrocarbons. Computational methods suggest a surface atomic configuration in which one Ag atom substitutes for one Fe atom in the (110) plane, resulting in better CO2 adsorption.
中文翻译：
层状水铁矿和掺银氮化硼纳米颗粒异质结构用于 CO2 加氢
铁基催化剂作为用于CO 2回收的有前途且具有成本效益的材料而受到越来越多的关注。它们的性能可以通过仔细选择适当的合成路线、底物和催化系统组分来调节。首次获得了由层状水铁矿（Fh）和六方氮化硼（h-BN）纳米粒子异质结构组成的纳米结构材料。随后的退火确保 Fe 纳米颗粒 (FeNP) 在 h-BN 表面上均匀分布。系统中添加少量银会导致 FeNP 的平均尺寸显着减小，这可能是由于晶种机制所致。催化测试表明，低Ag含量对催化活性有积极影响。稳定性测试表明，Fh/BN 系统的催化性能随着时间的推移而提高，对高附加值碳氢化合物的选择性也随之提高。计算方法提出了一种表面原子构型，其中一个Ag原子取代(110)平面中的一个Fe原子，从而产生更好的CO 2吸附。
更新日期：2024-04-22
中文翻译：
层状水铁矿和掺银氮化硼纳米颗粒异质结构用于 CO2 加氢
铁基催化剂作为用于CO 2回收的有前途且具有成本效益的材料而受到越来越多的关注。它们的性能可以通过仔细选择适当的合成路线、底物和催化系统组分来调节。首次获得了由层状水铁矿（Fh）和六方氮化硼（h-BN）纳米粒子异质结构组成的纳米结构材料。随后的退火确保 Fe 纳米颗粒 (FeNP) 在 h-BN 表面上均匀分布。系统中添加少量银会导致 FeNP 的平均尺寸显着减小，这可能是由于晶种机制所致。催化测试表明，低Ag含量对催化活性有积极影响。稳定性测试表明，Fh/BN 系统的催化性能随着时间的推移而提高，对高附加值碳氢化合物的选择性也随之提高。计算方法提出了一种表面原子构型，其中一个Ag原子取代(110)平面中的一个Fe原子，从而产生更好的CO 2吸附。
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