dc.contributor.author | Wang, Xue Lu | |
dc.contributor.author | Fang, Wen Qi | |
dc.contributor.author | Liu, Wenqing | |
dc.contributor.author | Jia, Yi | |
dc.contributor.author | Jing, Dengwei | |
dc.contributor.author | Wang, Yun | |
dc.contributor.author | Yang, Ling-Yun | |
dc.contributor.author | Gong, Xue-Qing | |
dc.contributor.author | Yao, Ye-Feng | |
dc.contributor.author | Yang, Hua Gui | |
dc.contributor.author | Yao, Xiangdong | |
dc.date.accessioned | 2017-12-05T03:53:21Z | |
dc.date.available | 2017-12-05T03:53:21Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 2050-7488 | |
dc.identifier.doi | 10.1039/c7ta06602c | |
dc.identifier.uri | http://hdl.handle.net/10072/355240 | |
dc.description.abstract | Graphitic carbon nitride (g-C3N4) is a promising two-dimensional polymeric photocatalyst in the field of solar energy conversion. In the past few years many modifications of g-C3N4 have been studied extensively; however, the difficulty in obtaining detailed structural information both on its intrinsic covalent interactions and surrounding bonding environments largely restricts the rational design and development of inherent structure-controlled g-C3N4 based photocatalysts and fundamental understanding of their mechanistic operations. Herein, we demonstrate a high-pressure hydrogenation treatment method for g-C3N4 and introduce 1D 13C and 15N and 2D 15N Radio Frequency-driven Dipolar Recoupling (RFDR) solid-state nuclear magnetic resonance spectroscopy for identifying the structural information and surrounding hydrogen-bonding environment of treated g-C3N4 samples. The surface Brønsted base sites of g-C3N4 samples can be tuned systematically through changing the treatment conditions. We find that the terminal isolated –NH2 and the hydrogenated nitrogen species in treated g-C3N4 samples seem to be the origin of their improved activities for photocatalytic hydrogen evolution and favor the enhancement of light harvesting and carrier transport. The as-prepared HCN400-4-2 sample treated at a pressure of 4 MPa and a temperature of 400 °C for 2 h in a hydrogen atmosphere displays the highest H2 evolution reaction (HER) activity, which is over 26 times higher than that of pristine g-C3N4. | |
dc.description.peerreviewed | Yes | |
dc.language | English | |
dc.language.iso | eng | |
dc.publisher | Royal Society of Chemistry | |
dc.relation.ispartofpagefrom | 19227 | |
dc.relation.ispartofpageto | 19236 | |
dc.relation.ispartofjournal | Journal of Materials Chemistry A | |
dc.relation.ispartofvolume | 5 | |
dc.subject.fieldofresearch | Macromolecular and materials chemistry | |
dc.subject.fieldofresearch | Macromolecular and materials chemistry not elsewhere classified | |
dc.subject.fieldofresearch | Materials engineering | |
dc.subject.fieldofresearch | Other engineering | |
dc.subject.fieldofresearch | Chemical engineering | |
dc.subject.fieldofresearchcode | 3403 | |
dc.subject.fieldofresearchcode | 340399 | |
dc.subject.fieldofresearchcode | 4016 | |
dc.subject.fieldofresearchcode | 4099 | |
dc.subject.fieldofresearchcode | 4004 | |
dc.title | Bronsted base site engineering of graphitic carbon nitride for enhanced photocatalytic activity | |
dc.type | Journal article | |
dc.type.description | C1 - Articles | |
dc.type.code | C - Journal Articles | |
gro.hasfulltext | No Full Text | |
gro.griffith.author | Wang, Yun | |
gro.griffith.author | Jia, Yi | |