Pd homojunctions enable remarkable CO<sub>2</sub> electroreduction

Li, Yunkai; Zhang, Kaifu; Yu, Yu; Zhan, Xiaowen; Gui, Jiaojiao; Xue, Jingyu; Jin, Xin; Gao, Shan

doi:10.1039/d1cc04780a

Cited by 10 publications

(5 citation statements)

References 36 publications

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“…However, the j HCOOH normalized by the electrochemical active surface area (ESCA) manifests a similar trend to the uncorrected j HCOOH , indicating the minor impact of the ESCA on the catalytic performance. 28 Furthermore, AgSn@SnO x (30 s) produced a plateau current density of 10 mA cm −2 with a FE HCOOH of 87.46%@−0.9 V after 1800 min of electrolysis (Fig. S5 †).…”

Section: Catalysis Science and Technology Communicationmentioning

confidence: 99%

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

El-Aqapa,

Badawy,

Khedr

et al. 2023

Catal. Sci. Technol.

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Section: Catalysis Science and Technology Communicationmentioning

confidence: 99%

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

El-Aqapa,

Badawy,

Khedr

et al. 2023

Catal. Sci. Technol.

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“…In this regard, metal aerogels represent a unique opportunity as unsupported, self-stabilized three-dimensional nanonetworks enabling a high mass-normalized CO 2 RR activity and a suppression of the HER owing to the absence of a carbon support. Specifically, the aerogels’ high surface areas and porosities render them exceptional (electro)catalysts, and they have additionally been shown to possess excellent electrochemical corrosion stability while diminishing the possibility of material loss due to corrosion of the carbon support. , As a result, aerogels have found application as electrocatalysts for O 2 reduction, ,− ethanol oxidation, , or CO 2 electroreduction, whereby SnPd, PdAg, AuPd, BiSn, and PdCu aerogels have been shown to yield high amounts of a single product (formate, CO, or methanol), while Au and Pd aerogels displayed high FEs toward CO at high overpotentials.…”

Section: Introductionmentioning

confidence: 99%

CO₂ Electroreduction on Unsupported PdPt Aerogels: Effects of Alloying and Surface Composition on Product Selectivity

Diercks

Georgi

Herranz

et al. 2022

ACS Appl. Energy Mater.

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Due to its unique ability to reduce carbon dioxide (CO 2 ) into CO or formate at high versus low overpotentials, respectively, palladium is a promising catalyst for the electrochemical CO 2 -reduction reaction (CO 2 RR). Further improvements aim at increasing its activity and selectivity toward either of these value-added species, while reducing the amount of hydrogen produced as a side product. With this motivation, in this work, we synthesized a range of unsupported, bimetallic PdPt aerogels and pure Pt or Pd aerogels and extensively characterized them using various microscopic and spectroscopic techniques. These revealed that the aerogels' porous web consists of homogenous alloys of Pt and Pd, with palladium and platinum being present on their surface for all compositions. The subsequent determination of these aeorgels' CO 2 RR performance unveiled that the high activity of these Pt surface atoms toward hydrogen evolution causes all PdPt alloys to favor this reaction over CO 2 reduction. In the case of the pure Pd aerogel, although, its unsupported nature leads to a suppression of H 2 evolution and a concomitant increase in the selectivity toward CO when compared to a commercial, carbon-supported Pd-nanoparticle catalyst.

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“…In addition, the 3D nanonetwork structure provides better durability and stability, which further enhances the catalyst lifespan. Noble metal aerogels such as Au, Pd, Ag, PtÀ Ag, AuÀ Ag have been reported extensively; [32][33][34][35][36][37][38][39] precious metal-non-metal composite aerogels have also been studied [40,41] and high-performance non-noble metal aerogels are rarely investigated. Besides, few works researched the combined effect of porous structure and bimetallic sites in alloy for CO 2 RR.…”

Section: Introductionmentioning

confidence: 99%

High Performance 3D Self‐Supporting Cu−Bi Aerogels for Electrocatalytic Reduction of CO₂ to Formate

Yue

Che

et al. 2022

ChemSusChem

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The electrocatalytic reduction of CO 2 (CO 2 RR) to CO, formate, methane, and other high-value compounds is a promising technique. However, current electrocatalysts suffer from drawbacks such as few active catalytic sites, poor selectivity and low stability, etc, which restrict the practical application. Although monatomic metal catalysts have been widely reported in recent years, high performance non-noble metal aerogels were rarely investigated for electrocatalytic CO 2 RR. Herein, CuÀ Bi aerogels with boosted CO 2 RR activity were well constructed by a simple one-step self-assembly method. The resultant Cu 1 Bi 2 exhibits excellent CO 2 RR activity with high faradaic efficiency (FE) of 96.57 % towards HCOOH at a potential of À 0.9 V vs. RHE, and the FE HCOOH remains over 80.18 % in a wide potential window (À 0.8 V to À 1.2 V vs. RHE). It demonstrated that the enhanced CO 2 RR activity of CuÀ Bi aerogels could be attributed to the 3D self-supporting structure of the catalysis, synergistic effect, and low interfacial charge transfer resistance.

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Pd homojunctions enable remarkable CO₂ electroreduction

Abstract: A facile melting–casting strategy for synthesizing 3D Pd aerogels is reported. As a proof-of-concept study, the homojunction effect is demonstrated as a powerful tool for optimizing the structure of metal-based catalysts and their CO2RR activity.

Cited by 10 publications

References 36 publications

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

CO₂ Electroreduction on Unsupported PdPt Aerogels: Effects of Alloying and Surface Composition on Product Selectivity

High Performance 3D Self‐Supporting Cu−Bi Aerogels for Electrocatalytic Reduction of CO₂ to Formate

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Pd homojunctions enable remarkable CO2 electroreduction

Abstract: A facile melting–casting strategy for synthesizing 3D Pd aerogels is reported. As a proof-of-concept study, the homojunction effect is demonstrated as a powerful tool for optimizing the structure of metal-based catalysts and their CO2RR activity.

Cited by 10 publications

References 36 publications

Dynamic hydrogen bubbling templated AgSn@SnOx electrocatalyst for selective electrochemical CO2 reduction: adjusting the binding energy of the HCOO* intermediate

Dynamic hydrogen bubbling templated AgSn@SnOx electrocatalyst for selective electrochemical CO2 reduction: adjusting the binding energy of the HCOO* intermediate

CO2 Electroreduction on Unsupported PdPt Aerogels: Effects of Alloying and Surface Composition on Product Selectivity

High Performance 3D Self‐Supporting Cu−Bi Aerogels for Electrocatalytic Reduction of CO2 to Formate

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Pd homojunctions enable remarkable CO₂ electroreduction

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

Dynamic hydrogen bubbling templated AgSn@SnO_x electrocatalyst for selective electrochemical CO₂ reduction: adjusting the binding energy of the HCOO* intermediate

CO₂ Electroreduction on Unsupported PdPt Aerogels: Effects of Alloying and Surface Composition on Product Selectivity

High Performance 3D Self‐Supporting Cu−Bi Aerogels for Electrocatalytic Reduction of CO₂ to Formate