title: A Graphitic-C3N4 "Seaweed" Architecture for Enhanced Hydrogen Evolution.
abstract: A seaweed-like graphitic-C3N4 (g-C3N4 "seaweed") architecture has been prepared by direct calcination of the freeze-drying-assembled, hydrothermally treated dicyandiamide fiber network. The seaweed network of mesoporous g-C3N4 nanofibers is favorable for light harvesting, charge separation and utilization of active sites, and has highly efficient photocatalytic behavior for water splitting. It exhibits a high hydrogen-evolution rate of 9900 μmol h(-1) g(-1) (thirty times higher than that of its g-C3N4 bulk counterpart), and a remarkable apparent quantum efficiency of 7.8% at 420 nm, better than most of the g-C3N4 nanostructures reported. This work presents a very simple method for designing and developing high-performance catalysts for hydrogen evolution.
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijng 100081 (P.R. China).
authors.forename: Qing
authors.initials: Q
authors.lastname: Han
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijng 100081 (P.R. China).
authors.forename: Bing
authors.initials: B
authors.lastname: Wang
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijng 100081 (P.R. China).
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijng 100081 (P.R. China).
authors.forename: Chuangang
authors.initials: C
authors.lastname: Hu
authors.affiliation: Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science, Ministry of Education, School of Chemistry, Beijing Institute of Technology, Beijng 100081 (P.R. China). lqu@bit.edu.cn.
authors.forename: Liangti
authors.initials: L
authors.lastname: Qu
keywords: g-C3N4 “seaweed”; hydrogen evolution; photocatalysis; self-assembly; template-free