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Carbon dots (CDs) are widely studied for years due to their unique luminescent properties and potential applications in many fields. However, aggregation‐caused quenching, monotonous emission modes, and unsustainable preparation impose restrictions on their performance and practical applications. Here, this work reports the facile synthesis of sustainable silk‐derived multimode emitting CDs with dispersed‐state...
Biomass‐derived carbon materials (BCMs) are encountering the most flourishing moment because of their versatile properties and wide potential applications. Numerous BCMs, including 0D carbon spheres and dots, 1D carbon fibers and tubes, 2D carbon sheets, 3D carbon aerogel, and hierarchical carbon materials have been prepared. At the same time, their structure–property relationship and applications...
Single‐atom catalysts have become a hot spot because of the high atom utilization efficiency and excellent activity. However, the effect of the support structure in the single‐atom catalyst is often unnoticed in the catalytic process. Herein, a series of carbon spheres supported Ni–N4 single‐atom catalysts with different support structures are successfully synthesized by the fine adjustment of synthetic...
In article number 2003943, Hongfang Li, Rong Cao, and co‐workers successfully synthesize a hollow mesoporous carbon sphere loaded Ni–N4 single‐atom catalyst that exhibits superior catalytic activity toward CO2 electrocatalytic reduction. The geometrical structure of carbon support is verified to affect the CO2 reduction reaction performance greatly. The ultrathin carbon shell and the 7–10 nm mesopores...
Metal–metal batteries such as the 3 V Cu‐Al system are highly desirable for large‐scale energy storage owing to their low cost and excellent scalability of Cu and Al foils. However, the dissolved Cu cations will crossover from the cathode to the anode leading to poor electrochemical performance. In this work, it is demonstrated that the reversibility of the Cu‐Al battery depends strongly on the interaction...
Controlled synthesis of highly efficient, stable, and cost‐effective oxygen reaction electrocatalysts with atomically‐dispersed Me–Nx–C active sites through an effective strategy is highly desired for high‐performance energy devices. Herein, based on regenerated silk fibroin dissolved in ferric chloride and zinc chloride aqueous solution, 2D porous carbon nanosheets with atomically‐dispersed Fe–Nx...
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