Hierarchically Porous SnO₂Coupled Organic Carbon for CO₂Electroreduction

Abstract

Converting CO2into value‐added chemicals or fuels by electrochemical CO2reduction reaction (CO2RR) has aroused great interest, whereas designing highly active and selective electrocatalysts is still a challenge. Herein, a novel kind of electrochemical catalyst composed with SnO2and organic carbon (OC), named as SnO2/OC, was facilely constructed for CO2RR. The obtained SnO2/OC exhibits both high faradaic efficiency for formate (∼75 %) and carbon products (∼95 %) as well as excellent stability. High surface area with hierarchically porous structure and the homogeneous formation of Sn−O−C linkages in SnO2/OC jointly promote the adsorption and activation of CO2, as well as fast transport of reactants and products.

Revealing the role of aniline in assisting SnO2 electrocatalytic CO2 reduction to HCOOH: via the perspective of the reaction pathway

“…S4f †). Such an inspirational performance over SnO 2 /PDA 0.5 -OCNTs stands out among the majority of reported SnO 2 -based electrocatalysts for the generation of HCOOH via CO 2 ER [54][55][56][57][58][59][60][61][62][63][64][65][66] (Table S3 † and Fig. 4e).…”

Surface-Enhanced Raman Spectroscopy for Boosting Electrochemical CO2 Reduction on Amorphous-Surfaced Tin Oxide Supported by MXene

“…Furthermore, as shown in Figure S10, the partial current density of the formate also indicates that SnO x is the true active species of the CO 2 RR, compared to the apparently competitive HER of crystalline SnO 2 and SnO 2 /MXene (Figure S11). The formate current density of SnO 2 @SnO x /MXene at −1.17 V vs RHE reaches 22 mA cm –2 , better than most of the Sn-based catalysts in the H-type cell, (Figure h) ,− and its performance also surpasses those of most nontin-based catalysts (Table S1). To evaluate the relative size of the electrochemical specific area (ECSA) of the four tin-based catalysts, cyclic voltammetry tests were conducted for each catalyst in the non-Faradaic potential range at different scan rates, and a linear fit was performed to obtain the double-layer capacitance ( C dl ) (Figure S12).…”

MOF‐Derived Cu/Bi Bi‐metallic Catalyst to Enhance Selectivity Toward Formate for CO2 Electroreduction

“…To further reveal the bi‐metallic effect on the intrinsic catalytic activity for different catalysts, oxidative LSV scan was carried out to explore CO 2 ⋅ − binding capacity (Figure 4d) [16b,26] . It is found that compared with Bi−Bi 2 O 3 @C, the potential of oxidative adsorption of OH − on Cu x /Bi−Bi 2 O 3 @C obviously shifts to more negative direction.…”