Preparation of a modified g-C3N4 catalyst library and realization of a two-dimensional screening reaction

Abstract

In this study, we present a new fluorescence imaging-based high-throughput screening method to evaluate the catalytic performance of the polymetallic sulfide complex g-C₃N₄. In order to obtain a large number of catalysts, we chose the sulfates of three metals (Cd, Cu, and Ni) to modify g-C₃N₄. A catalyst library consisting of polymetallic sulfide composite carbon nitride materials (M₃S/g-C₃N₄, M = Cd_xCu_yNi_1−x−y) was obtained using a color ink-jet printing technique. The degradation reaction of eosin solution was carried out under 365 nm UV light. According to the intensity of fluorescence change, the high-efficiency catalysts are the following three combinations: Cd_0.37Cu_0.53Ni_0.10 S/g-C₃N₄, Cd_0.11Cu_0.41Ni_0.48S/g-C₃N₄ and Cd_0.31Cu_0.39Ni_0.30S/g-C₃N₄.