Universal Synthesis of Single‐Atom Catalysts by Direct Thermal Decomposition of Molten Salts for Boosting Acidic Water Splitting

• DOI: 10.1002/adma.202401163
• Publication Date: 2024-04-19T13:13:26Z
• Authors: Shubham Kaushik; Duojie Wu; Zhen Zhang; Xin Xiao; Cheng Zhen; Wenjuan Wang; Ning‐Yu Huang; Meng Gu; Qiang Xu
• Keywords: Noble metal

Abstract Single‐atom catalysts (SACs) are considered prominent materials in the field of catalysis due to their high metal atom utilization and selectivity. However, wide‐ranging applications SACs remain a significant challenge complex preparation processes. Here, universal strategy is reported prepare series noble single atoms on different non‐noble oxides through facile one‐step thermal decomposition molten salts. By using mixture nitrate small‐amount chloride as precursor, can be easily introduced into oxide lattice owing cation exchange situ formed salt, followed by anions during heating process. Analyses aberration‐corrected high‐angle annular dark‐field scanning transmission electron microscopy extended X‐ray absorption fine structure spectroscopy confirm formation finely dispersed atoms. Specially, as‐synthesized Ir (10.97 wt%) Pt (4.60 Co 3 O 4 support demonstrate outstanding electrocatalytic activities for oxygen evolution reaction hydrogen reaction, respectively.