Black TiO <sub>2</sub> ‐g‐C <sub>3</sub> N <sub>4</sub> heterojunction coupled with MOF (ZIF‐67)‐derived Co <sub>3</sub> S <sub>4</sub> / nitrogen‐doped carbon hollow nanobox
Mojtaba Rostami, Milad Jourshabani, Fatemeh Davar, Ghodsi Mohammadi Ziarani, Alireza Badiei
Abstract
Abstract In this research, the ultrasound (US) technique was applied as a facile synthesis method for preparing the black TiO 2 ‐g‐C 3 N 4 type II heterojunction, coupled with a Schottky junction MOF (ZIF‐67)‐derived x wt% Co 3 S 4 /nitrogen‐doped carbon (NC) ( x = 3, 10, and 15) with hollow nanobox (HNB) morphology, as a smart nanoheteroarchitecture (NHA) photocatalyst to enhance visible‐light photocatalytic activity. Additionally, the solvothermal synthesis route was employed to fabricate the MOF (ZIF‐67)‐derived Co 3 S 4 /NC cubic hollow nanoboxes (CHNBs) before the pyrolysis process. The black TiO 2 ‐g‐C 3 N 4 wt% Co 3 S 4 /NC (TiCN‐15% CoS/NC) NHAs exhibited high photocatalytic activity in degrading methylene blue. The synergetic effect of all components in black TiCN‐ x wt% CoS/NC NHAs resulted in efficient electron‐hole pair separation and charge mobility on Co 3 S 4 /NC HNB and g‐C 3 N 4 surfaces, which led to a highly effective recombination rate of charge carriers and an excellent improvement in photocatalytic performance.