Carbon ‐Intercalated 0D/2D Hybrid of Hematite Quantum Dots/Graphitic Carbon Nitride Nanosheets as Superior Catalyst for Advanced Oxidation

0D hematite quantum dots/2D ultrathin g ‐C3N4 nanosheet hybrids are developed by simple chemical reactions and calcination. Highly exposed active surfaces, charge transfer at the intrinsic interface, and synergy between photocatalysis and H2O2 lead to excellent catalytic performance for degradingp‐nitrophenol. This work provides new insights into the development of heterogeneous catalysis for optoelectronic applications. AbstractEfficient charge separation and sufficiently exposed active sites are important for light ‐driving Fenton catalysts. 0D/2D hybrids, especially quantum dots (QDs)/nanosheets (NSs), offer a better opportunity for improving photo‐Fenton activity due to their high charge mobility and more catalytic sites, which is highly desirable but remains a great challenge. Herein, a 0D hematite quan tum dots/2D ultrathin g‐C3N4 nanosheets hybrid (Fe2O3 QDs/g ‐C3N4 NS) is developed via a facile chemical reaction and subsequent low ‐temperature calcination. As expected, the specially designed 0D/2D structure shows remarkable catalytic performance toward the removal ofp‐nitrophenol. By virtue of large surface area, adequate active sites, and strong interfacial coupling, the 0D Fe2O3 QDs/2D g ‐C3N4 nanosheets establish efficient charge transport paths by local in ‐plane carbon species, expediting the separation and transfer of electron/hole pairs. Simultaneously, highly efficient charge mobility can lead to continuous and fast Fe(III)/Fe(II) conversio...
Source: Small - Category: Nanotechnology Authors: Tags: Full Paper Source Type: research