2D/2D phosphorene/BiOI S-scheme heterojunction for subminute photocatalytic water disinfection under real sunlight

Solar disinfection (SODIS), as a point-of-use (POU) water disinfection strategy for controlling waterborne microorganisms, serves millions of residents daily in over 50 low- to middle-income countries lacking basic drinking water services. However, SODIS is time consuming (6-48 h of sunlight exposure) due to its strong dependence on UV photons, which account for only ~4% of the solar energy. Thus, it is desirable to capture additional energy from visible-light photons (~50% of the solar energy) to accelerate the slow kinetics. Here, we use phosphorene nanoflakes (PNs) and BiOI nanosheets (BS) as model materials to construct a heterojunction photocatalyst, illustrating that simultaneously modulating the…

• NN
  National Natural Science Foundation of China

  Awards: 42377048, 22176030, 42422702, 42407082, 42130705
• CP
  China Postdoctoral Science Foundation

  Award: 2022M720700
• FR
  Fundamental Research Funds for the Central Universities

  Award: 2412023QD027