title: Fast Photoelectron Transfer in (Cring)-C3N4Plane Heterostructural Nanosheets for Overall Water Splitting.
abstract: Direct and efficient photocatalytic water splitting is critical for sustainable conversion and storage of renewable solar energy. Here, we propose a conceptual design of two-dimensional C3N4-based in-plane heterostructure to achieve fast spatial transfer of photoexcited electrons for realizing highly efficient and spontaneous overall water splitting. This unique plane heterostructural carbon ring (Cring)-C3N4nanosheet can synchronously expedite electron-hole pair separation and promote photoelectron transport through the local in-plane π-conjugated electric field, synergistically elongating the photocarrier diffusion length and lifetime by 10 times relative to those achieved with pristine g-C3N4. As a result, the in-plane (Cring)-C3N4heterostructure could efficiently split pure water under light irradiation with prominent H2production rate up to 371 μmol g-1h-1and a notable quantum yield of 5% at 420 nm.
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Che
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Weiren
authors.initials: W
authors.lastname: Cheng
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Tao
authors.initials: T
authors.lastname: Yao
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Fumin
authors.initials: F
authors.lastname: Tang
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Su
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Huang
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Liu
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Jinkun
authors.initials: J
authors.lastname: Liu
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Fengchun
authors.initials: F
authors.lastname: Hu
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Zhiyun
authors.initials: Z
authors.lastname: Pan
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Zhihu
authors.identifier: 0000-0002-3898-969X
authors.initials: Z
authors.lastname: Sun
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China , Hefei, 230029 Anhui, PR China.
authors.forename: Shiqiang
authors.identifier: 0000-0002-2052-1132
authors.initials: S
authors.lastname: Wei