Gold boosts nitrate reduction and deactivation resistance to indium-promoted palladium catalysts

Guo, Sujin; Li, Hao; Heck, Kimberly N.; Luan, Xinying; Guo, Wenhua; Henkelman, Graeme; Wong, Michael S.

doi:10.1016/j.apcatb.2021.121048

Cited by 37 publications

(16 citation statements)

References 44 publications

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“…A quick search of the most recent publications between 2016 and 2022 found meticulous advanced studies. Examples include spectroscopic characterization and theoretical simulations of In−Pd nanostructures (Guo et al, 2018), boosting the reaction kinetics and deactivation resistance of In−Pd by gold (Au) (Guo et al, 2022), immobilization of In−Pd onto sustainable and scalable natural fibers (Durkin et al, 2018), immobilization of Sn−Pd onto red mud (Hamid et al, 2018) and coal fly-ash-derived zeolites (Park et al, 2019). Notably, the electrochemical NO 3 − reduction toward N 2 also adopted similar design rationales.…”

Section: Case Studies Of Advances In Reductive Catalysismentioning

confidence: 99%

Catalytic reduction of water pollutants: knowledge gaps, lessons learned, and new opportunities

Liu

Gao

2022

Front. Environ. Sci. Eng.

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In this paper, we discuss the previous advances, current challenges, and future opportunities for the research of catalytic reduction of water pollutants. We present five case studies on the development of palladium-based catalysts for nitrate, chlorate, and perchlorate reduction with hydrogen gas under ambient conditions. We emphasize the realization of new functionalities through the screening and design of catalytic metal sites, including (i) platinum group metal (PGM) nanoparticles, (ii) the secondary metals for improving the reaction rate and product selectivity of nitrate reduction, (iii) oxygen-atom-transfer metal oxides for chlorate and perchlorate reduction, and (iv) ligand-enhanced coordination complexes for substantial activity enhancement. We also highlight the facile catalyst preparation approach that brought significant convenience to catalyst optimization. Based on our own studies, we then discuss directions of the catalyst research effort that are not immediately necessary or desirable, including (1) systematic study on the downstream aspects of under-developed catalysts, (2) random integration with hot concepts without a clear rationale, and (3) excessive and decorative experiments. We further address some general concerns regarding using H2 and PGMs in the catalytic system. Finally, we recommend future catalyst development in both “fundamental” and “applied” aspects. The purpose of this perspective is to remove major misconceptions about reductive catalysis research and bring back significant innovations for both scientific advancements and engineering applications to benefit environmental protection.

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Section: Case Studies Of Advances In Reductive Catalysismentioning

confidence: 99%

Catalytic reduction of water pollutants: knowledge gaps, lessons learned, and new opportunities

Liu

Gao

2022

Front. Environ. Sci. Eng.

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“…The reaction systems range from industrial processes to environmental chemistry, hydrogen storage, electrocatalysis, and fine chemical synthesis, e.g. , CO oxidation, H 2 O 2 synthesis, − hydrodesulfurization, NO x removal, , electrooxidation, − electroreduction, − vinyl acetate synthesis, , ammonium formate synthesis, alkyne cycloaddition, hydrosilylation, and some coupling reactions (Suzuki–Miyaura, Heck, Ullmann, and Buchwald–Hartwig) . The wide variety of PdAu’s applicability may be due to not only the intrinsic versatility of Pd for many catalytic conversions but also the alloying effect by Au and the chemical stability of Pd–Au.…”

Section: Catalyst Designmentioning

confidence: 99%

Catalysis of Alloys: Classification, Principles, and Design for a Variety of Materials and Reactions

2022

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Alloying has long been used as a promising methodology to improve the catalytic performance of metallic materials. In recent years, the field of alloy catalysis has made remarkable progress with the emergence of a variety of novel alloy materials and their functions. Therefore, a comprehensive disciplinary framework for catalytic chemistry of alloys that provides a cross-sectional understanding of the broad research field is in high demand. In this review, we provide a comprehensive classification of various alloy materials based on metallurgy, thermodynamics, and inorganic chemistry and summarize the roles of alloying in catalysis and its principles with a brief introduction of the historical background of this research field. Furthermore, we explain how each type of alloy can be used as a catalyst material and how to design a functional catalyst for the target reaction by introducing representative case studies. This review includes two approaches, namely, from materials and reactions, to provide a better understanding of the catalytic chemistry of alloys. Our review offers a perspective on this research field and can be used encyclopedically according to the readers' individual interests. CONTENTS

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“…Among metal electrodes, different metallic materials exhibit a range of physical and chemical properties and contribute to the electrocatalytic reduction of nitrate in a variety of ways, and there are significant differences in reduction efficiency and product selectivity, implying that they have a diverse range of application scenarios. Noble metals such as Pd [47], Pt [48], Ag [49], and Au [50], along with others, which havehigh corrosion resistance and high electrocatalytic activity can effectively reduce nitrate in wastewater as cathodes, but their high cost prevents their use on a large scale. Non-noble metal materials such as Cu [51], Fe [23], Al [52], Ni [53], Ti [54], along with others, also have excellent electrochemical performance and lower cost, thus, non-noble metal research is one of the primary research directions for metal electrodes today.…”

Section: Metallic Electrodesmentioning

confidence: 99%

Recent research progress of electrocatalytic reduction technology for nitrate wastewater: A review

Meng

Liu

Yang

et al. 2023

Journal of Environmental Chemical Engineering

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Gold boosts nitrate reduction and deactivation resistance to indium-promoted palladium catalysts

Cited by 37 publications

References 44 publications

Catalytic reduction of water pollutants: knowledge gaps, lessons learned, and new opportunities

Catalytic reduction of water pollutants: knowledge gaps, lessons learned, and new opportunities

Catalysis of Alloys: Classification, Principles, and Design for a Variety of Materials and Reactions

Recent research progress of electrocatalytic reduction technology for nitrate wastewater: A review

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