Correction: Celery-derived porous carbon materials for superior performance supercapacitors.

[This corrects the article DOI: 10.1039/D1NA00342A.].

Correction: Bio-inspired hierarchical nanoporous carbon derived from water spinach for high-performance supercapacitor electrode materials.

[This corrects the article DOI: 10.1039/D1NA00636C.].

Correction: Effect of pomelo seed-derived carbon on the performance of supercapacitors.

[This corrects the article DOI: 10.1039/D0NA00778A.].

Correction: A hierarchical porous P-doped carbon electrode through hydrothermal carbonization of pomelo valves for high-performance supercapacitors.

[This corrects the article DOI: 10.1039/D0NA00211A.].

Bio-inspired hierarchical nanoporous carbon derived from water spinach for high-performance supercapacitor electrode materials.

Due to various properties, green carbon nanomaterials with high specific surface area and environmentally friendly features have aroused extensive interest in energy storage device applications. Here, we report a facile, one-step carbonization of water spinach to synthesize porous carbon that exhibits a high specific surface area of ∼1559 m g, high specific capacitance (∼1191 F g at 1 A g), a low intercept (0.9 Ω), outstanding rate capability and superior cycling stability (94.

A hierarchical porous P-doped carbon electrode through hydrothermal carbonization of pomelo valves for high-performance supercapacitors.

Porous carbon materials are synthesized from pomelo valves by the hydrothermal activation of HPO followed by simple carbonization. The as-synthesized hierarchically porous carbon electrode exhibits a high specific capacitance of 966.4 F g at 1 A g and an ultra-high stability of 95.

A novel green process for tannic acid hydrolysis using an internally sulfonated hollow polystyrene sphere as catalyst.

A polystyrene-hollow sphere catalyst was prepared by treating polystyrene-encapsulated calcium carbonate particles with concentrated hydrochloric acid. This catalyst was characterized using TGA, FT-IR, optical microscope, SEM-EDX and XPS. Evidences from SEM-EDX and XPS analyses indicated that the sulfonate groups were on the inner surface of the polystyrene hollow sphere.