A facile synthesis of Co-doped g-C3N4 catalyst to activate peroxymonosulfate for organic pollutants degradation under visible lightFangli Chi, Shengshu Ai, Fan Wang, Xiaona Ji and Dejun BianE3S Web Conf., 261 (2021) 04001DOI: https://doi.org/10.1051/e3sconf/202126104001