Improved Photocatalytic H2 Evolution over G-Carbon Nitride with Enhanced In-Plane Ordering

Guixia Zhao, Guigao Liu, Hong Pang, Huimin Liu, Huabin Zhang, Kun Chang, Xianguang Meng, Xiaojun Wang, Jinhua Ye

Research output: Contribution to journalArticlepeer-review

47 Scopus citations

Abstract

A series of rod-like porous graphitic-carbon nitrides (short as CNs) with enhanced in-plane ordering have been fabricated through self-assembled heptazine hydrate precursors for the first time. By controlling the calcination of the preformed precursors with different temperature-rising rates, the resulted CNs (SAHEP-CNs-1) with the most ordered and least stacked graphitic planar are showing a tremendously improved hydrogen evolution rate of 420 μmol h−1 under visible light and a remarkable apparent quantum efficiency of 8.9% at 420 nm, which is among the highest values for C3N4-related photocatalysts in the literature. This work discloses that enhancing in-plane ordering is one critical factor for improving the photocatalytic H2 evolution of carbon nitride, which is an effective solution to prolong the lifetime of charge carriers by accelerating the charge transport and separation within the graphitic planar. This finding would present a facial strategy for the designing of efficient organic semiconductors for photocatalysis.
Original languageEnglish (US)
Pages (from-to)6160-6166
Number of pages7
JournalSmall
Volume12
Issue number44
DOIs
StatePublished - Nov 23 2016
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-15

ASJC Scopus subject areas

  • General Medicine

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