“…4,5 In particular, by forming a Z-scheme heterojunction, a wide light-absorption range and sufficient redox capacity can be simultaneously achieved, ascribed to the Z-scheme charge-transfer path with the assistance of the built-in electric field in the heterojunction region, which can thus enhance the photocatalytic performance. 6–9 Recently, a number of Z-scheme heterojunctions such as g-C 3 N 4 /MoS 2 , 10 CdIn 2 S 4 /ZnS, 11 CoS x /CdS, 12 and BiOCl/Bi 2 S 3 13 have been constructed with the aim of achieving excellent photocatalytic performances. Additionally, assembling low-dimensional nanoscale building blocks to form hierarchical hollow configurations is reported as another commendable method for improving the photocatalytic performance.…”