High activity of hot electrons from bulk 3D graphene materials for efficient photocatalytic hydrogen production

被引：0
作者：
Yanhong Lu
Bo Ma
Yang Yang
Erwei Huang
Zhen Ge
Tengfei Zhang
Suling Zhang
Landong Li
Naijia Guan
Yanfeng Ma
Yongsheng Chen
机构：
[1] Nankai University,State Key Laboratory and Institute of Elemento
[2] Nankai University,Organic Chemistry, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Key Laboratory of Functional Polymer Materials and the Centre of Nanoscale Science and Technology, Institute of Polymer Chemistry, College o
[3] Langfang Teachers University,School of Material Science and Engineering & National Institute for Advanced Materials
来源：
Nano Research | 2017年 / 10卷
关键词：
graphene; hot electron; hydrogen production; water splitting; TiO;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Design and synthesis of efficient photocatalysts for hydrogen production via water splitting are of great importance from both theoretical and practical viewpoints. Many metal-based semiconductors have been explored for this purpose in recent decades. Here, for the first time, an entirely carbon-based material, bulk three-dimensionally cross-linked graphene (3DG), has been developed as a photocatalyst for hydrogen production. It exhibits a remarkable hydrogen production rate of 270 μmol·h−1·gcat−1 under full-spectrum light via a hot/free electron emission mechanism. Furthermore, when combined with the widely used semiconductor TiO2 to form a TiO2/3DG composite, it appears to become a more efficient hydrogen production photocatalyst. The composite achieves a production rate of 1,205 μmol·h−1·gcat−1 under ultraviolet–visible (UV–vis) light and a 7.2% apparent quantum efficiency at 350 nm due to the strong synergetic effects between TiO2 and 3DG.
引用
收藏
页码：1662 / 1672
页数：10
相关论文
共 352 条
  • [21] Gong M.(2010)Photocatalyst releasing hydrogen from water Adv. Funct. Mater. 20 2255-3303
  • [22] Li Y. G.(2014)A perovskite oxide optimized for oxygen evolution catalysis from molecular orbital principles Chem.—Eur. J. 20 187-11816
  • [23] Wu J. Z.(2014)A metal-free polymeric photocatalyst for hydrogen production from water under visible light Adv. Mater. 26 3297-10884
  • [24] Feng J.(2013)Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway Ed. 52 11813-583
  • [25] Lanza M.(2011)Macroscopic 3D porous graphitic carbon nitride monolith for enhanced photocatalytic hydrogen evolution J. Am. Chem. Soc. 133 10878-6578
  • [26] Dai H. J.(2010)Graphitic carbon nitride (g-C Storing and shuttling electrons with reduced graphene oxide. Nano Lett. 10 577-607
  • [27] Li J.-S.(2012)N J. Am. Chem. Soc. 134 6575-230
  • [28] Wang Y.(2015))-based photocatalysts for artificial photosynthesis and environmental remediation: Are we a step closer to achieving sustainability? J. Am. Chem. Soc. 137 604-162
  • [29] Liu C.-H.(2016)Activated carbon nanotubes: A highly-active metal-free electrocatalyst for hydrogen evolution reaction Nat. Commun. 7 11819-476
  • [30] Li S.-L.(2016)Poly(3,4-dinitrothiophene)/SWCNT composite as a low overpotential hydrogen evolution metal-free catalyst Nat. Nanotechnol. 11 218-252
12345678910