title: Improved Photocatalytic H2Evolution over G-Carbon Nitride with Enhanced In-Plane Ordering.
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-1under 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 H2evolution 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.
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Guixia
authors.initials: G
authors.lastname: Zhao
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.|Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo, 060-0814, Japan.
authors.forename: Guigao
authors.initials: G
authors.lastname: Liu
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.|Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo, 060-0814, Japan.
authors.forename: Hong
authors.initials: H
authors.lastname: Pang
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Huimin
authors.initials: H
authors.lastname: Liu
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Huabin
authors.initials: H
authors.lastname: Zhang
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Kun
authors.initials: K
authors.lastname: Chang
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Xianguang
authors.initials: X
authors.lastname: Meng
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Wang
authors.affiliation: International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan.|Graduate School of Chemical Science and Engineering, Hokkaido University, Sapporo, 060-0814, Japan.|TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University, Tianjin, 300072, P. R. China.|Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China.
authors.forename: Jinhua
authors.initials: J
authors.lastname: Ye
keywords: H2 evolution; carbon nitride; in-plane ordering; photocatalysis; self-assembly