“…67 This is also shown by estimating the phytotoxicity using LaCoO 3 /g-C 3 N 4 and tetracycline in water under different conditions (i.e., pH, temperature, and concentration). 68 Interestingly, g-C 3 N 4 and g-C 3 N 4 /biochar were used as ecological remediation agents over riverbed sediment for 30 days. Illumina sequencing examined the changes in the bacteria, which showed that g-C 3 N 4 exposure had a concentration-dependent effect on the diversity of bacteria (i.e., acidobacteria, gemmatimonadetes, and rokubacteria); meanwhile, g-C 3 N 4 /biochar exposure had a slight influence on the bacterial diversity.…”