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

Abstract

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 .

Electrocatalytic Reduction of CO2 to Methanol by Iron Tetradentate Phosphine Complex Through Amidation Strategy

“…[2] Methanol is av aluable chemical, liquid fuel, hydrogen storagem aterial, and chemical intermediate. For example, Pd/SnO 2 nanosheets produced CH 3 OH with aF aradaic efficiency (FE) of 54.8 %, [4] and RuO 2 /TiO 2 nanotubes with an FE of 60.5 %. For example, Pd/SnO 2 nanosheets produced CH 3 OH with aF aradaic efficiency (FE) of 54.8 %, [4] and RuO 2 /TiO 2 nanotubes with an FE of 60.5 %.…”

Highly Efficient Electroreduction of CO2 to Methanol on Palladium–Copper Bimetallic Aerogels

“…On the other hand, the intense Pd 3d 5/2 peaks of Pd 83 Cu 17 aerogel at 334.7 eV and 336.1 eV correspond to the metallic Pd 0 and Pd II ,and the Pd 3d 3/2 peaks at 340.0 eV and 341.1 eV correspond to Pd 0 and Pd II .T he variation of the molar ratios of Pd and Cu in aerogels leads to different relative intensity ratio of Cu I + Cu 0 /Cu II and Pd 0 /Pd II (Figure 3C,D). [31][32][33] TheC O ads and CHO ads can be also adsorbed efficiently on Cu I + Cu 0 species, [34,35] resulting in the increasing of CH 3 OH yields. Amorphous Cu had large amount of low-coordinated atoms and hence was abundant defects.T hus,m ore catalytic centers were created to enhance CO 2 catalytic performance.…”

Enhanced Electroreduction of Carbon Dioxide to Methanol Using Zinc Dendrites Pulse‐Deposited on Silver Foam

“…Theh ighest FE CH 3 OH and j CH 3 OH observed were 10.5 %a nd À2.7 mA cm À2 at ac onstant current of À26 mA cm À2 .C H 4 evolved with am aximum FE CH 4 and j CH 4 of 7.5 %a nd À1.6 mA cm À2 . [9] To rationalize the activity of PD-Zn/Ag foam for CH 3 OH production, we resorted to an interplay between DFT calculations and electrochemical experiments.F irst, we inspected the structure sensitivity of CO adsorption on pure Ag and Zn surfaces ( Figure S8). Our PD-Zn/Ag foam exhibits signifi-cantly higher FE CH 3 OH and j CH 3 OH than monometallic (Ag and Zn foils) [1] and bimetallic (Ni 3 Al and Ag-Zn alloy) systems.…”