Simultaneous diffusion of cation and anion to access N, S co-coordinated Bi-sites for enhanced CO2 electroreduction

Research Progress and Application of Single-Atom Catalysts: A Review

“…Wang et al [24] prepared N and S co-coordinated Bi single-atom catalysts (Bi-SAs-NS/C) by anion and cation co-diffusion method, and the electrochemical catalytic performance of Bi-SAs-NS/C on CO 2 RR was studied. As the Bi source and S source, the Bi 2 S 3 precursor can simultaneously diffuse into the surrounding polydopamine (PDA) layer.…”

A novel method to synthesize BiSI uniformly coated with rGO by chemical bonding and its application as a supercapacitor electrode material

“…Comparison against the Bi foil and standard oxide compound reference suggested the Bi present in both BiSI-rGO and BiSI were in an intermediate state between Bi 0 and Bi 3+ , which is due to the Bi bonding to S, a less electronegative element than O, and therefore the average oxidation state of Bi is found to be lower than in the Bi 2 O 3 standard. 52,53 Linear combination t (LCF) analysis was used to estimate the oxidation state of Bi (Table S1 †), and results indicate that the oxidation state of Bi in BiSI-rGO (1.6) is lower than that of BiSI (1.9), which could be caused by the partial substitution of S by C, which is less electronegative, on the active site. These results are consistent with the XPS analysis.…”

Hollow microstructural regulation of single-atom catalysts for optimized electrocatalytic performance

“…Compared with solid materials, hollow microstructures not only greatly increase the specific surface area of catalysts to expose the active sites but also facilitate the diffusion of the substrate [82,[87][88][89] . Therefore, the regulation of hollow microstructures can remarkably affect and even manipulate the catalytic performance of SACs [80,[90][91][92][93] . Herein, we focus on studying the methods, intrinsic properties and regulation of hollow microstructures to improve the electrocatalytic performance.…”