Inserting Single‐Atom Zn by Tannic Acid Confinement To Regulate the Selectivity of Pd Nanocatalysts for Hydrogenation Reactions
Source abstract
Abstract
Abstract Precisely controlling the selectivity of nanocatalysts has always been a hot topic in heterogeneous catalysis but remains difficult owing to their complex and inhomogeneous catalytic sites. Herein, an effective strategy to regulate the chemoselectivity of Pd nanocatalysts for selective hydrogenation reactions by inserting single‐atom Zn into Pd nanoparticles is reported. Taking advantage of the tannic acid coating‐confinement strategy, small‐sized Pd nanoparticles with inserted single‐atom Zn are obtained on the O‐doped carbon‐coated alumina. Compared with the pure Pd nanocatalyst, the Pd nanocatalyst with single‐atom Zn insertion exhibits prominent selectivity for the hydrogenation of p‐iodonitrobenzene to afford the hydrodeiodination product instead of nitro hydrogenation ones. Further computational studies reveal that the single‐atom Zn on Pd nanoparticles strengthens the adsorption of the nitro group to avoid its reduction and increases the d‐band center of Pd atoms to facilitate the reduction of the iodo group, which leads to enhanced selectivity. This work provides new guidelines to tune the selectivity of nanocatalysts with guest single‐atom sites.
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Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Catalytic Processes in Materials Science · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials Engineering Wenzhou University Wenzhou 325035 China
Department of Chemistry University of Massachusetts Amherst Amherst MA 01002 USA
Department of Chemistry Tsinghua University Beijing 100084 China
Department of Chemistry and Chemical Engineering Central South University Changsha Hunan 410083 China
State Key Laboratory of Coal Conversion Institute of Coal Chemistry Chinese Academy of Sciences Taiyuan Shanxi 030001 China
State Key Laboratory of High‐efficiency Utilization of Coal and Green Chemical Engineering College of Chemistry and Chemical Engineering Ningxia University Yinchuan Ningxia 750021 China
College of Materials Science and Engineering Shenzhen University Shenzhen 518060 China
Funding
China Postdoctoral Science Foundation · National Postdoctoral Program for Innovative Talents · National Natural Science Foundation of China
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