A Review on Nanostructured Carbon Nitrides for CO2 Capture

Carbon nitride has drawn broad interdisciplinary attention in diverse fields such as catalyst, energy storage, gas adsorption, biomedical sensing and even imaging. Intensive studies on carbon dioxide (CO2) capture using carbon nitride materials with various nanostructures have been reported since it is needed to actively remove CO2 from the atmosphere against climate change. This is mainly due to its tunable structural features, excellent physicochemical properties, and basic surface functionalities based on the presence of a large number of –NH or –NH2 groups so that the nanostructured carbon nitrides are considered as suitable materials for CO2 capture for future utilization as well. In this review, we summarize and highlight the recent progress in synthesis strategies of carbon nitride nanomaterials. Their superior CO2 adsorption capabilities are also discussed with the structural and textural features. An outlook on possible further advances in carbon nitride is also included.