Catalytic reduction reactions over the silver ions embedded in polyacrylamide/graphene composite hydrogels: Kinetics and performance

Catalytic reduction of organic analytes has aroused substantial attention due to the significant role they have been playing in both fundamental and industrial fields. However, there still lacks a new catalytic mechanism since similar catalytic reduction pathways are frequently reported based on the literature review (e.g., the catalytic reactions generally controlled by the pseudo-first-order kinetics). In this contribution, the catalytic pathway is flexibly varied by tuning the microstructure of a ternary composite catalyst consisting of silver ions, graphene, and polyacrylamide. The pseudo-zero-order kinetics is, for the first time, realized using such metal ions-based catalysts. The in-depth structural characterizations and analyses of the catalysis pathway and performance are provided.