In situ generated Pb nanoclusters on basic lead carbonate ultrathin nanoplates as an effective heterogeneous catalyst

Yu, Xiao; Diao, Qi; Zhang, Xiaokai; Lee, Yong‐Ill; Liu, Hong-Guo

doi:10.1039/c7ce00472a

Cited by 15 publications

(4 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, the symmetric peak at 138.8 eV is attributed to PbCO 3 in the Pb 4f 7/2 spectra of t-PCO ( Fig. 2f), while the peak at 138.3 eV in t-PCOH represents the formation of Pb-OH 33 . It should be pointed out that no Pb(0) is found throughout the whole process.…”

Section: Resultsmentioning

confidence: 88%

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

et al. 2020

View full text Add to dashboard Cite

For most metal-containing CO 2 reduction reaction (CO 2 RR) electrocatalysts, the unavoidable self-reduction to zero-valence metal will promote hydrogen evolution, hence lowering the CO 2 RR selectivity. Thus it is challenging to design a stable phase with resistance to electrochemical self-reduction as well as high CO 2 RR activity. Herein, we report a scenario to develop hydrocerussite as a stable and active electrocatalyst via in situ conversion of a complex precursor, tannin-lead(II) (TA-Pb) complex. A comprehensive characterization reveals the in situ transformation of TA-Pb to cerussite (PbCO 3), and sequentially to hydrocerussite (Pb 3 (CO 3) 2 (OH) 2), which finally serves as a stable and active phase under CO 2 RR condition. Both experiments and theoretical calculations confirm the high activity and selectivity over hydrocerussite. This work not only offers a new approach of enhancing the selectivity in CO 2 RR by suppressing the self-reduction of electrode materials, but also provides a strategy for studying the reaction mechanism and active phases of electrocatalysts.

show abstract

Section: Resultsmentioning

confidence: 88%

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

et al. 2020

View full text Add to dashboard Cite

show abstract

“…42,43 In the high-resolution spectra of Pb 4f in Fig. 2d, two symmetric peaks at around 138.4 eV and 143.3 eV is associated with the 4f 7/2 and 4f 5/2 spin-orbit coupling of lead (II) compounds, [44][45][46] respectively; these two peaks can be further split into two kinds of lead in either Pb(OH) 2 (green line) or PbCO 3 (purple line), 47,48 which is consistent with the structure of Pb(OH) 2 •2PbCO 3 . Therefore, we did get a composite of Pb 3 (OH) 2 (CO 3 ) 2 with acetylene black.…”

Section: Resultsmentioning

confidence: 99%

Pb₃(OH)₂(CO₃)₂-Acetylene Black Composites for Enhanced Hydrogen Evolution Reaction Inhibition of Lead-Acid Batteries

Hu¹,

Yang²,

Lai³

et al. 2022

J. Electrochem. Soc.

View full text Add to dashboard Cite

Pb3(OH)2(CO3)2-acetylene black (BLC/AB) composite is successfully prepared by a simple and economical sonochemical method and employed as a negative additive for lead-acid batteries (LABs). The electrochemical measurements show that the obtained BLC/AB electrodes have a higher hydrogen evolution reaction (HER) overpotential compared to AB electrode. BLC/AB-2 and BLC/AB-4 battery deliver the excellent rate performance at 1 C rate. What’s more, acetylene black as nucleation centers of Pb3(OH)2(CO3)2 may considerably alleviate irreversible sulfation phenomenon of negative plate, thus enhancing the conductivity and extending the cycle life. Interestingly, the cycle life (1172) of BLC/AB-2 battery is 1.44 times that of the same amount of AB battery (814) at 1C rate. Therefore, the BLC/AB composite is a promising negative additive of LABs.

show abstract

“…In the high‐resolution Pb 4f 7/2 XPS spectrum of Pb 3 (CO 3 ) 2 (OH) 2 , the symmetric peaks located at 137.8 and 138.5 eV indicate the formation of Pb‐CO 3 and Pb‐OH (Figure 2c). [ 20,21 ] No detectable F 1s signal is found on the surface of Pb 3 (CO 3 ) 2 (OH) 2 (Figure 2c). The high‐resolution C 1s XPS spectrum shows three peaks with binding energies at 284.8, 286.4, and 288.5 eV (Figure 2d).…”

Section: Resultsmentioning

confidence: 99%

Efficient and Selective CO₂ Reduction to Formate on Pd‐Doped Pb₃(CO₃)₂(OH)₂: Dynamic Catalyst Reconstruction and Accelerated CO₂ Protonation

Huang

Wang

Liu

et al. 2022

Small

View full text Add to dashboard Cite

Exploring catalyst reconstruction under the electrochemical condition is critical to understanding the catalyst structure–activity relationship as well as to design effective electrocatalysts. Herein, a PbF2 nanocluster is synthesized and its self‐reconstruction under the CO2 reduction condition is investigated. F− leaching, CO2‐saturated environment, and application of a cathodic potential induce self‐reconstruction of PbF2 to Pb3(CO3)2(OH)2, which effectively catalyze the CO2 reduction to formate. The in situ formed Pb3(CO3)2(OH)2 discloses >80% formate Faradaic efficiencies (FEs) across a broad range of potentials and achieves a maximum formate FE of ≈90.1% at −1.2 V versus reversible hydrogen electrode (RHE). Kinetic studies show that the CO2 reduction reaction (CO2RR) on the Pb3(CO3)2(OH)2 is rate‐limited at the CO2 protonation step, in which proton is supplied by bicarbonate (HCO3−) in the electrolyte. To improve the CO2RR kinetics, the Pb3(CO3)2(OH)2 is further doped with Pd (4 wt%) to enhance its HCO3− adsorption, which leads to accelerated protonation of CO2. Therefore, the Pd‐Pb3(CO3)2(OH)2 (4 wt%) reveals higher formate FEs of >90% from −0.8 to −1.2 V versus RHE and reaches a maximum formate FE of 96.5% at −1.2 V versus RHE with a current density of ≈13 mA cm−2.

show abstract

In situ generated Pb nanoclusters on basic lead carbonate ultrathin nanoplates as an effective heterogeneous catalyst

Cited by 15 publications

References 61 publications

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Pb₃(OH)₂(CO₃)₂-Acetylene Black Composites for Enhanced Hydrogen Evolution Reaction Inhibition of Lead-Acid Batteries

Efficient and Selective CO₂ Reduction to Formate on Pd‐Doped Pb₃(CO₃)₂(OH)₂: Dynamic Catalyst Reconstruction and Accelerated CO₂ Protonation

Contact Info

Product

Resources

About

In situ generated Pb nanoclusters on basic lead carbonate ultrathin nanoplates as an effective heterogeneous catalyst

Cited by 15 publications

References 61 publications

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Unveiling hydrocerussite as an electrochemically stable active phase for efficient carbon dioxide electroreduction to formate

Pb3(OH)2(CO3)2-Acetylene Black Composites for Enhanced Hydrogen Evolution Reaction Inhibition of Lead-Acid Batteries

Efficient and Selective CO2 Reduction to Formate on Pd‐Doped Pb3(CO3)2(OH)2: Dynamic Catalyst Reconstruction and Accelerated CO2 Protonation

Contact Info

Product

Resources

About

Pb₃(OH)₂(CO₃)₂-Acetylene Black Composites for Enhanced Hydrogen Evolution Reaction Inhibition of Lead-Acid Batteries

Efficient and Selective CO₂ Reduction to Formate on Pd‐Doped Pb₃(CO₃)₂(OH)₂: Dynamic Catalyst Reconstruction and Accelerated CO₂ Protonation