Porous C-rich carbon nitride decorated with Co species based on heptazine supramolecular assembly for boosting CO2 photoreduction - Jiawei Xia; Yuxuan Tong; Yongke Hu; Shencheng Pan; Xingyue Qian; Dafang He; Guangyu He; Haiqun Chen (Journal of Environmental Chemical Engineering, 2026)