A Graphitic‐C3N4 "Seaweed" Architecture for Enhanced Hydrogen Evolution1. (15th July 2015)

• Record Type: Journal Article
• Authors: Han, Qing; Wang, Bing; Zhao, Yang; Hu, Chuangang; Qu, Liangti
• Is Part Of: Angewandte Chemie. Volume 127:Number 39(2015)
• Page Start: 11595
• Page End: 11599
• Publication Date: 2015-07-15
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201504985
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>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.</p> </abstract>