Black Phosphorus Quantum Dots/Carbon Nitride-Reduced Graphene Oxide Ternary Heterojunction as a Multifunctional Metal-Free Photocatalyst for Photooxidation Reactions

We report herein a rationally designed metal-free ternary heterojunction, namely, black phosphorus quantum dots/carbon nitride-reduced graphene oxide (BPQDs/CN-rGO), that functions as photocatalyst in multiple photooxidation reactions including C═C bond cleavage, glycerol oxidation, and C–CF3 formation along with the removal of organic pollutants from wastewater. After characterization structure photophysical properties BPQDs/CN-rGO it was first tested photodegradation showed superior performance. The underlying mechanism revealed created internal electric field (IEF) among components photogenerated species (h+ O2•–) are attributed to activity. Prompted by these results, applied other reactions. nonclassical-type-II heterojunction generates active (O2•–, h+, 1O2) under visible light irradiation, enabling selective oxidation glyceric acid cleavage highly challenging Langlois reagent CF3-functionalized heteroarenes.