“…13,17 However, the practical applications of g-C 3 N 4 are still hindered by the several obstacles and shortcomings, especially its low specic surface area, limited active sites, poor adsorption ability, and the serious aggregation observed during a photocatalytic process, of common bulk g-C 3 N 4 prepared via the direct polycondensation of nitrogenrich precursors. 17,18 To overcome these drawbacks, many attempts, such as doping with heteroatoms, 19,20 constructing heterostructures, 21,22 fabricating copolymers, 23,24 and thermal etching, 25,26 have been dedicated towards improving the photocatalytic capability of g-C 3 N 4 . However, preparation of a highly active g-C 3 N 4 material using a facile and eco-friendly strategy is still desirable.…”