Construction of a Z-scheme heterojunction for high-efficiency visible-light-driven photocatalytic CO2reduction
- 26 January 2021
- journal article
- review article
- Published by Royal Society of Chemistry (RSC) in Nanoscale
- Vol. 13 (8), 4359-4389
- https://doi.org/10.1039/d0nr08442e
Abstract
The continuous growth of fossil fuel consumption and large amounts of CO2 emissions have caused global energy crisis and climate change. The employment of semiconductor photocatalysts to convert CO2 into value-added products has attracted extensive attention and research worldwide in recent years. However, it is difficult for a single-component semiconductor photocatalyst to achieve this goal efficiently due to its drawbacks, such as low quantum efficiency, limited surface area, limited number of active sites, the short lifetime of photogenerated carriers, poor long-term stability, and the weak redox ability of carriers. Fortunately, inspired by photosynthesis, the construction of an artificial Z-scheme heterojunction has brought a new dawn for the realization of this goal. The Z-scheme heterojunction has a high separation efficiency of electron–hole pairs with strong redox ability and a wide light response range. The abovementioned advantages make the Z-scheme heterojunction provide a great opportunity for the conversion of CO2 to value-added chemicals. This review concisely reports the progress of the Z-scheme heterojunction in the field of photocatalytic CO2 reduction in recent years, photocatalytic mechanism, choice of oxidation and reduction systems, strategies for improving efficiency, confirmation of the Z-scheme charge transport mechanism, problems and challenges, and the prospects for the future.Keywords
Funding Information
- National Key Research and Development Program of China (2017YFB0601900)
- Chinese Academy of Sciences (2017JZ0021)
This publication has 190 references indexed in Scilit:
- Photocatalytic reduction of CO2 over a hybrid photocatalyst composed of WO3 and graphitic carbon nitride (g-C3N4) under visible lightJournal of CO2 Utilization, 2014
- All‐Solid‐State Z‐Scheme Photocatalytic SystemsAdvanced Materials, 2014
- Gold nanorod-based localized surface plasmon resonance biosensors: A reviewSensors and Actuators B: Chemical, 2014
- Nanospherical Carbon Nitride Frameworks with Sharp Edges Accelerating Charge Collection and Separation at a Soft Photocatalytic InterfaceAdvanced Materials, 2014
- Visible-Light-Induced Water Splitting Based on Two-Step Photoexcitation between Dye-Sensitized Layered Niobate and Tungsten Oxide Photocatalysts in the Presence of a Triiodide/Iodide Shuttle Redox MediatorJournal of the American Chemical Society, 2013
- Z-Scheme Water Splitting Using Two Different Semiconductor PhotocatalystsACS Catalysis, 2013
- [Co(bpy)3]3+/2+ and [Co(phen)3]3+/2+ Electron Mediators for Overall Water Splitting under Sunlight Irradiation Using Z-Scheme Photocatalyst SystemJournal of the American Chemical Society, 2013
- Selectivity of CO2 Reduction on Copper Electrodes: The Role of the Kinetics of Elementary StepsAngewandte Chemie, 2013
- Visible-light-induced WO3/g-C3N4 composites with enhanced photocatalytic activityDalton Transactions, 2013
- The effect of co-catalyst for Z-scheme photocatalysis systems with an Fe3+/Fe2+ electron mediator on overall water splitting under visible light irradiationJournal of Catalysis, 2008