Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles

Gao, Dunfeng; Zhou, Hu; Fan, Caimei; Wang, Dongniu; Hu, Yongfeng; Jiang, Bei; Cai, Wen‐Bin; Chen, Xiaoqi; Si, Rui; Yang, Fan; Miao, Shu; Wang, Jianguo; Wang, Qianqian; Bao, Xinhe

doi:10.1007/s12274-017-1514-6

Cited by 237 publications

(319 citation statements)

References 57 publications

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“…[4] When pure Pd nanocatalysts are used, the selectivity of products are often regulated by controlling the size of Pd nanoparticles (NPs) or the reduction potentials. [1a] Considering that Pd has high chemical affinity to CO and is thus easily poisoned by it, [8] them anipulation of both adsorption and activation of CO is crucial in the design of new Pd-based nanocatalysts to realize the production of value-added chemicals beyond 2e À process.W enow report in this work at wo-dimensional (2D) hierarchical Pd/SnO 2 structure to meet such ademand on balancing CO adsorption and activation. [6] Nevertheless,s of ar majority of Pd-based nanomaterials just produce CO or HCOO À through 2e À transfer in CO 2 RR.…”

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confidence: 99%

“…[5] As for alloyed-Pd catalysts,t he proper ratio of second metal to Pd is critical to obtain ah igh-selectivity product. [1a] Considering that Pd has high chemical affinity to CO and is thus easily poisoned by it, [8] them anipulation of both adsorption and activation of CO is crucial in the design of new Pd-based nanocatalysts to realize the production of value-added chemicals beyond 2e À process.W enow report in this work at wo-dimensional (2D) hierarchical Pd/SnO 2 structure to meet such ademand on balancing CO adsorption and activation. Multi-electron reduction to obtain value-added products such as methanol has been rarely reported.…”

mentioning

confidence: 99%

“…[6] Nevertheless,s of ar majority of Pd-based nanomaterials just produce CO or HCOO À through 2e À transfer in CO 2 RR. [1a] Considering that Pd has high chemical affinity to CO and is thus easily poisoned by it, [8] them anipulation of both adsorption and activation of CO is crucial in the design of new Pd-based nanocatalysts to realize the production of value-added chemicals beyond 2e À process.W enow report in this work at wo-dimensional (2D) hierarchical Pd/SnO 2 structure to meet such ademand on balancing CO adsorption and activation. [7] Previous studies have demonstrated that CO intermediate is usually involved in multi-electron transfer during CO 2 RR.…”

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confidence: 99%

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Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

et al. 2018

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Electrochemical conversion of CO into fuels using electricity generated from renewable sources helps to create an artificial carbon cycle. However, the low efficiency and poor stability hinder the practical use of most conventional electrocatalysts. In this work, a 2D hierarchical Pd/SnO structure, ultrathin Pd nanosheets partially capped by SnO nanoparticles, is designed to enable multi-electron transfer for selective electroreduction of CO into CH OH. Such a structure design not only enhances the adsorption of CO on SnO , but also weakens the binding strength of CO on Pd due to the as-built Pd-O-Sn interfaces, which is demonstrated to be critical to improve the electrocatalytic selectivity and stability of Pd catalysts. This work provides a new strategy to improve electrochemical performance of metal-based catalysts by creating metal oxide interfaces for selective electroreduction of CO .

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Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

et al. 2018

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“…Previous studies indicate that Pd is a promising catalyst to facilitate the interconversion between CO 2 and formic acid/formate . It is indicated that power density as high as that of a hydrogen‐oxygen fuel cell can be obtained in the direct formic acid fuel cells using Pd‐based metal as a anode catalyst, and when Pd‐based metal is used as a cathode catalyst, the electrochemical reduction of CO 2 to formate just require very small potential to drive because of the unique adsorption/absorption property of Pd to H atoms ,. Nevertheless, the challenge that the parallel CO pathway on the surface of Pd‐based catalysts may have a strong competition with the desirable pathway still remains.…”

Section: Synthesis and Application Of Atomic‐level Noble Metals For Ementioning

confidence: 99%

Design of Noble Metal Electrocatalysts on an Atomic Level

Chao

Hong

et al. 2018

ChemElectroChem

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Nanostructured noble metal‐based materials have been considered in recent years as promising catalysts for energy storage and conversion. One of their prominent applications is a series of electrochemical processes in fuel cells, as they show excellent electrocatalytic performance towards the reactions occurring at both anode and cathode. Nowadays, considerable efforts have been devoted to boosting the catalytic activity and minimizing the used amount of precious metals. In this review, we introduce the recent advances regarding controllable synthesis of noble metal electrocatalysts at an atomic level. Important electrochemical reactions, such as oxygen reduction reaction (ORR), hydrogen evolution reaction (HER), oxygen evolution reaction (OER), electroreduction of carbon dioxide (CO2) and so on, catalyzed by precisely controllable noble metal electrocatalysts will be highlighted. This review primarily focuses on the exploration for the relationship between atomic‐level structure of electrocatalysts and their enhanced catalytic property combining theoretical calculations and experiments. Finally, perspectives for further advances of noble metal nanomaterials are proposed to realize rational design of electrocatalysts at an atomic level.

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“…[5,6] Electrochemical reduction of CO 2 and H 2 O( or H + )t op roduce syngas is appealing because it meets the requirements for clean and high-efficiency chemical production. [9,10] For the electrochemical CO 2 -into-syngasc onversion in aqueous electrolyte, most important are the appropriate heterogeneous electrocatalystst hat should facilitate two independent electrochemical reactions simultaneously:t he electrocatalytic CO 2 reduction reaction (CO 2 RR) and the hydrogen evolution reaction( HER). [9,10] For the electrochemical CO 2 -into-syngasc onversion in aqueous electrolyte, most important are the appropriate heterogeneous electrocatalystst hat should facilitate two independent electrochemical reactions simultaneously:t he electrocatalytic CO 2 reduction reaction (CO 2 RR) and the hydrogen evolution reaction( HER).…”

Section: Introductionmentioning

confidence: 99%

Porous Palladium Nanomeshes with Enhanced Electrochemical CO₂‐into‐Syngas Conversion over a Wider Applied Potential

Xie

Ren

et al. 2019

ChemSusChem

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Electrochemical conversion of CO2 into syngas, which can be used directly in the classical petroleum industrial processes, provides a powerful approach for achieving the recycling of anthropogenic carbon. Pd has previously been reported to be capable of converting CO2 into syngas with various CO/H2 ratios, but only at limited applied potential, which is mainly attributed to fewer active sites exposed toward electrocatalysis. Herein, high‐performance Pd nanomeshes (NMs) assembled with branch‐like Pd nanoparticles were designed and synthesized by using a simple interface‐induced self‐assembly strategy; these NMs could catalyze CO2‐into‐syngas conversion with a high current density in a wide applied potential range from −0.5 to −1.0 V (vs. reversible hydrogen electrode). Further evidence validated that the enhanced activity of the Pd NMs was not only caused by the crosslinked network structure accelerating electron transport, but also by the greater number of edge and/or corner active sites exposed on the surface of the NMs, which facilitated CO2 adsorption, CO2.− formation, COOH* stabilization, and CO generation. Under optimal operating conditions, Pd NMs could balance two competing reactions: CO2 reduction and hydrogen evolution. The resultant syngases with the ideal and tunable CO/H2 ratio between 0.5:1 and 1:1 could be used directly for methanol synthesis and Fischer–Tropsch reactions.

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Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles

Cited by 237 publications

References 57 publications

Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

Design of Noble Metal Electrocatalysts on an Atomic Level

Porous Palladium Nanomeshes with Enhanced Electrochemical CO₂‐into‐Syngas Conversion over a Wider Applied Potential

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Switchable CO2 electroreduction via engineering active phases of Pd nanoparticles

Cited by 237 publications

References 57 publications

Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO2 Nanosheets with Abundant Pd–O–Sn Interfaces

Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO2 Nanosheets with Abundant Pd–O–Sn Interfaces

Design of Noble Metal Electrocatalysts on an Atomic Level

Porous Palladium Nanomeshes with Enhanced Electrochemical CO2‐into‐Syngas Conversion over a Wider Applied Potential

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Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

Electrochemical Reduction of Carbon Dioxide to Methanol on Hierarchical Pd/SnO₂ Nanosheets with Abundant Pd–O–Sn Interfaces

Porous Palladium Nanomeshes with Enhanced Electrochemical CO₂‐into‐Syngas Conversion over a Wider Applied Potential