A Graphitic-C3N4 "Seaweed" Architecture for Enhanced Hydrogen Evolution

被引：562

作者：

Han, Qing ^{[1
]}

Wang, Bing ^{[1
]}

Zhao, Yang ^{[1
]}

Hu, Chuangang ^{[1
]}

Qu, Liangti ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem, Minist Educ,Key Lab Cluster Sci, Beijing Key Lab Photoelect Electrophoton Convers, Beijing 100081, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2015年 / 54卷 / 39期

基金：

北京市自然科学基金;

关键词：

g-C3N4 "seaweed; hydrogen evolution; photocatalysis; self-assembly; template-free; CARBON NITRIDE NANOSHEETS; SEMICONDUCTORS; PHOTOCATALYSTS; WATER;

D O I：

10.1002/anie.201504985

中图分类号：

O6 [化学];

学科分类号：

070301 [无机化学];

摘要：

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 mu molh(-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.

引用

页码：11433 / 11437

页数：5

共 23 条

[1]

[Anonymous], ANGEW CHEM

[2]

[Anonymous], ANGEW CHEM

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