▎ 摘　　要

Near-infrared (NIR) irradiation accounts for approximately 54.3% of the solar spectrum. Therefore, MoS2 and N-doped graphene (NG) were utilised to fabricate a direct Z-scheme NIR-response photocatalytic system (MoS2/NG). The photocatalytic tests showed that MoS2/NG Z-scheme photocatalytic system can result in a 99.6% degradation ratio of ammonia under NIR irradiation, whereas the removal ratio of ammonia was only 64.0% using MoS2 as the photocatalyst under similar conditions. The catalytic efficiency is still over 90.7% even if the MoS2/NG catalyst was used for five runs, indicating that it is extremely stable. The kinetic research indicated the average apparent rate constant k(app) for ammonia degradation into N-2 was at approximately 0.251 h(-1). The enhanced photocatalytic activity of MoS2/NG was attributed to the more positive valence band level of the Z-scheme system.