“…In addition, MOFs, specifically, NH 2 ‐MIL‐101, NH 2 ‐MIL‐125(Ti), Cu‐BTC, NH 2 ‐MIL‐88B(Fe), UiO‐66, and ZIF‐8, have been used as host matrices for anchoring g‐C 3 N 4 to fabricate g‐C 3 N 4 ‐based composites with improved photocatalytic performance, which is due to increased chemical heterogeneity as well as efficient interfacial charge transfer from photoexcited g‐C 3 N 4 to MOFs . For example, UiO‐66‐NH 2 , a Zr‐containing MOF constructed of zirconium‐oxo clusters and aminoterephthalates, has a highly chemically stable, flat surface and, thus, has been used as a popular host matrix for dispersing metal and semiconductor nanoparticles for water splitting . However, to date, the application of UiO‐66‐NH 2 covered with g‐C 3 N 4 to derive ZrO 2 /g‐C 3 N 4 heterostructures for H 2 production by water splitting has not been reported in the literature.…”