Journal
SOLAR RRL
Volume 4, Issue 8, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/solr.201900435
Keywords
CO2 reduction; g-C3N4; heterostructures; low-dimensional materials; pollutant degradation; water splitting
Funding
- National Natural Science Foundation of China [51672210, 51961165103, 21875183]
- National Key Research and Development Program of China [2017YFE0193900, 2018YFB1502003]
- National Program for Support of Top-notch Young Professionals
- Natural Science Foundation of Shaanxi Province [2018JM5083]
- Fundamental Research Funds for the Central Universities
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Low-dimensional materials and heterostructure photocatalysts are distinct research topics in artificial photocatalysis. The rational design of photocatalysts considering both aspects has established significant importance due to the fascinating advantages of superior charge carrier transport/transfer and photocatalytic performances. Graphitic carbon nitride (g-C3N4), a captivating metal-free and visible light-active photocatalyst, has drawn interdisciplinary attention in the field of solar energy conversion and pollutant degradation because of its appropriate electronic band structure, excellent physicochemical stability, facile synthesis, and unique layered structure. The g-C3N4-based low-dimensional heterostructures demonstrate various mechanisms for photogenerated charge carrier transfer including type I heterojunction, type II heterojunction, p-n heterojunction, Z-scheme heterojunction, Schottky junction, and surface plasmon resonance (SPR) effect. Herein, the state-of-the-art g-C3N4-based low-dimensional heterostructure photocatalysts are analyzed to provide an insightful outlook with respect to doping and defect engineering, band structures tuning, and charged carrier dynamics to realize enhanced visible light absorption, improved photoinduced charge carrier transport/transfer, and spatially separated electron-hole pairs for improved photocatalytic performances. Furthermore, the potential application of g-C3N4-based low-dimensional heterostructures for water splitting, CO2 reduction, and pollutant degradation is also presented. Finally, conclusion and invigorating perspective about challenges and opportunities for advanced design of g-C3N4-based low-dimensional heterostructures are briefed.
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