biostudies-literatureLi HNational Natural Science Foundation of China18519-18524https://www.ebi.ac.uk/biostudies/studies/S-EPMC9033409biostudies-literatureUnknown11(30)The preparation of high-efficiency, pollution-free photocatalysts for water treatment has always been one of the research hotspots. In this paper, a carbon framework formed from waste grapefruit peel is used as the carrier. A simple one-step chemical vapor deposition (CVD) method allows tubular g-C₃N₄ to grow on the carbon framework. Tubular g-C₃N₄ increases the specific surface area of bulk g-C₃N₄ and enhances the absorption of visible light. At the same time, the carbon framework can effectively promote the separation and transfer of charges. The dual effects of static adsorption and photodegradation enable the g-C₃N₄/carbon (CNC) framework to quickly remove about 98% of methylene blue within 180 min.RSC advancesTubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue.PMC9033409LH2019E077Sun LLi HZang LYuan FShen FWang LfalseTubular g-C₃N₄/carbon framework for high-efficiency photocatalytic degradation of methylene blue.The preparation of high-efficiency, pollution-free photocatalysts for water treatment has always been one of the research hotspots. In this paper, a carbon framework formed from waste grapefruit peel is used as the carrier. A simple one-step chemical vapor deposition (CVD) method allows tubular g-C₃N₄ to grow on the carbon framework. Tubular g-C₃N₄ increases the specific surface area of bulk g-C₃N₄ and enhances the absorption of visible light. At the same time, the carbon framework can effectively promote the separation and transfer of charges. The dual effects of static adsorption and photodegradation enable the g-C₃N₄/carbon (CNC) framework to quickly remove about 98% of methylene blue within 180 min.2021-01-01T00:00:00Z2021 May2025-04-05T20:04:59.216Z2025-04-05T20:04:59.216ZS-EPMC90334093548093210.1039/d1ra02918e