Recyclable Quasi‐Homogeneous Carbon Nitride Colloidal Catalyst for Sustainable Photocatalytic H <sub>2</sub> O <sub>2</sub> Generation
Abstract
Abstract Graphitic carbon nitride (g‐C 3 N 4 ) photocatalysts have attracted growing interest for the eco‐friendly, solar‐driven synthesis of hydrogen peroxide (H 2 O 2 ). However, the catalytic efficiency remains limited by poor accessibility of reactive sites due to the hydrophobic nature and aggregation tendency of conventional g‐C 3 N 4 . Here, we report a hydrophilic g‐C 3 N 4 colloidal photocatalyst, synthesized via potassium ion (K⁺) incorporation and surface grafting with sulfonylcyanide groups, which enables quasi‐homogeneous photocatalytic H 2 O 2 production (7,886 µmol g⁻¹ h⁻¹), surpassing most reported g‐C 3 N 4 ‐based heterogeneous systems. The sulfonylcyanide groups facilitate O 2 adsorption and reduction, while synergistically promoting charge separation in conjunction with K⁺ ions. This work demonstrates the potential of hydrophilic g‐C 3 N 4 colloids in quasi‐homogeneous catalysis and presents a versatile strategy for designing advanced g‐C 3 N 4 ‐based photocatalysts for sustainable chemical synthesis.
Article Details
Authors (6)
Lian‐Lian Liu
Department of Environmental Science and Engineering University of Science and Technology of China Hefei 230026 P.R. China
Chao Cui
Fei Chen
Jie‐Jie Chen
State Key Laboratory of Advanced Environmental Technology Department of Environmental Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P.R. China
Han‐Qing Yu
State Key Laboratory of Advanced Environmental Technology Department of Environmental Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P.R. China
Yujie Xiong
State Key Laboratory of Advanced Glass Materials, Anhui Engineering Research Center of Carbon Neutrality, The Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecular-Based Materials, College of Chemistry and Materials Science