期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 5, 页码 1730-1733出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja411321s
关键词
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资金
- Deutsche Forschungsgemeinschaft [LO1801/1-1, SE1417/5-1]
- cluster of excellence Nanosystems Initiative Munich (NIM)
- Center for NanoScience (CeNS)
Nanosheets of a crystalline 2D carbon nitride were obtained by ionothermal synthesis of the layered bulk material poly(triazine imide), PTI, followed by one-step liquid exfoliation in water. Triazine-based nanosheets are 1-2 nm in height and afford chemically and colloidally stable suspensions under both basic and acidic conditions. We use solid-state NMR spectroscopy of isotopically enriched, restacked nanosheets as a tool to indirectly monitor the exfoliation process and carve out the chemical changes occurring upon exfoliation, as well as to determine the nanosheet thickness. PTI nanosheets show significantly enhanced visible-light driven photocatalytic activity toward hydrogen evolution compared to their bulk counterpart, which highlights the crucial role of morphology and surface area on the photocatalytic performance of carbon nitride materials.
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