Journal ArticleDOI
Low-Coordinated Edge Sites on Ultrathin Palladium Nanosheets Boost Carbon Dioxide Electroreduction Performance
Wenjin Zhu,Lei Zhang,Piaoping Yang,Congling Hu,Zhibin Luo,Xiaoxia Chang,Zhi-Jian Zhao,Jinlong Gong +7 more
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TLDR
It is described that ultrathin Pd nanosheets effectively reduce the onset potential for CO by exposing abundant atoms with comparatively low generalized coordination number in palladium-based catalysts toward CO2 ER.Abstract:
Electrochemical conversion of carbon dioxide (CO2 ) to value-added products is a possible way to decrease the problems resulting from CO2 emission. Thanks to the eminent conductivity and proper adsorption to intermediates, Pd has become a promising candidate for CO2 electroreduction (CO2 ER). However, Pd-based nanocatalysts generally need a large overpotential. Herein we describe that ultrathin Pd nanosheets effectively reduce the onset potential for CO by exposing abundant atoms with comparatively low generalized coordination number. Hexagonal Pd nanosheets with 5 atomic thickness and 5.1 nm edge length reached CO faradaic efficiency of 94 % at -0.5 V, without any decay after a stability test of 8 h. It appears to be the most efficient among all of Pd-based catalysts toward CO2 ER. Uniform hexagonal morphology made it reasonable to build models and take DFT calculations. The enhanced activity originates from mainly edge sites on palladium nanosheets.read more
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Defect engineering in earth-abundant electrocatalysts for CO2 and N2 reduction
TL;DR: In this article, the type, regulation strategy, fine defect characterization methods, and their application in the electrocatalytic CO2 reduction reaction (CRR) and N 2 reduction reaction(NRR) are discussed and summarized, and major challenges, opportunities, and future development direction of defect engineering in CRR and NRR catalysts are proposed.
Journal ArticleDOI
Theory-guided design of catalytic materials using scaling relationships and reactivity descriptors
Zhi-Jian Zhao,Sihang Liu,Shenjun Zha,Dongfang Cheng,Felix Studt,Graeme Henkelman,Jinlong Gong +6 more
TL;DR: This Review describes scaling relationships and reactivity descriptors for heterogeneous catalysis, including electronic descriptors represented by d-band theory, structural descriptors, which can be directly applied to catalyst design, and, ultimately, universal descriptors.
Journal ArticleDOI
Active Site Engineering in Porous Electrocatalysts.
TL;DR: In the discussions, an attempt is made to highlight the advantages of porous electrocatalysts in multiobjective optimization of surface active sites including not only their density and accessibility but also their intrinsic activity.
Journal ArticleDOI
Oxygen Vacancies in Amorphous InOx Nanoribbons Enhance CO2 Adsorption and Activation for CO2 Electroreduction
TL;DR: The improved performance is attributable to the abundant O-vacancies in the amorphous H-InOx NRs, which optimizes CO2 adsorption/activation and facilitates electron transfer for efficient CO2 ER.
References
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Journal ArticleDOI
A review of catalysts for the electroreduction of carbon dioxide to produce low-carbon fuels
TL;DR: The challenges in achieving highly active and stable CO2 reduction electrocatalysts are analyzed, and several research directions for practical applications are proposed, with the aim of mitigating performance degradation, overcoming additional challenges, and facilitating research and development in this area.
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Partially oxidized atomic cobalt layers for carbon dioxide electroreduction to liquid fuel
Shan Gao,Yue Lin,Xingchen Jiao,Yongfu Sun,Qiquan Luo,Wenhua Zhang,Dianqi Li,Jinlong Yang,Yi Xie +8 more
TL;DR: In this paper, the role of the two different catalytic sites of pure cobalt and coexisting domains of cobalt metal and cobalt oxide has been evaluated, showing that surface cobalt atoms of the atomically thin layers have higher intrinsic activity and selectivity towards formate production, at lower overpotentials.
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Aqueous CO2 reduction at very low overpotential on oxide-derived Au nanoparticles.
TL;DR: Electrokinetic studies indicate that the improved catalysis is linked to dramatically increased stabilization of the CO(2)(•-) intermediate on the surfaces of the oxide-derived Au electrodes.
Journal ArticleDOI
Freestanding palladium nanosheets with plasmonic and catalytic properties
Xiaoqing Huang,Shaoheng Tang,Xiaoliang Mu,Yan Dai,Guangxu Chen,Zhi-You Zhou,Fangxiong Ruan,Zhilin Yang,Nanfeng Zheng +8 more
TL;DR: The facile synthesis of freestanding hexagonal palladium nanosheets that are less than 10 atomic layers thick are reported, using carbon monoxide as a surface confining agent and exhibit a well-defined but tunable surface plasmon resonance peak in the near-infrared region.
Journal ArticleDOI
Catalysis of the electrochemical reduction of carbon dioxide
TL;DR: The general trends that transpire presently and are likely to be the object of active future work emphasis is put on the favorable role of acid addition in homogeneous catalytic systems and on the crucial chemical role of the electrode material in heterogeneous catalysis.