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dc.contributor.authorWang, Xue Lu
dc.contributor.authorFang, Wen Qi
dc.contributor.authorLiu, Wenqing
dc.contributor.authorJia, Yi
dc.contributor.authorJing, Dengwei
dc.contributor.authorWang, Yun
dc.contributor.authorYang, Ling-Yun
dc.contributor.authorGong, Xue-Qing
dc.contributor.authorYao, Ye-Feng
dc.contributor.authorYang, Hua Gui
dc.contributor.authorYao, Xiangdong
dc.date.accessioned2017-12-05T03:53:21Z
dc.date.available2017-12-05T03:53:21Z
dc.date.issued2017
dc.identifier.issn2050-7488
dc.identifier.doi10.1039/c7ta06602c
dc.identifier.urihttp://hdl.handle.net/10072/355240
dc.description.abstractGraphitic 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.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherRoyal Society of Chemistry
dc.relation.ispartofpagefrom19227
dc.relation.ispartofpageto19236
dc.relation.ispartofjournalJournal of Materials Chemistry A
dc.relation.ispartofvolume5
dc.subject.fieldofresearchMacromolecular and Materials Chemistry not elsewhere classified
dc.subject.fieldofresearchMacromolecular and Materials Chemistry
dc.subject.fieldofresearchMaterials Engineering
dc.subject.fieldofresearchInterdisciplinary Engineering
dc.subject.fieldofresearchcode030399
dc.subject.fieldofresearchcode0303
dc.subject.fieldofresearchcode0912
dc.subject.fieldofresearchcode0915
dc.titleBronsted base site engineering of graphitic carbon nitride for enhanced photocatalytic activity
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.hasfulltextNo Full Text
gro.griffith.authorYao, Xiangdong
gro.griffith.authorWang, Yun
gro.griffith.authorJia, Yi
gro.griffith.authorYang, Huagui


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