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Electronic properties of boron nitride nanosheets were tamed by doping carbon atoms into the matrix for boosted aerobic catalytic performance.

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Heterogeneous catalysis has become an important branch in the catalytic field, whereas catalytic activities of heterogeneous catalysts are controlled by surface features and structural textures. Herein, we reported a synthesis of an amphiphilic tungsten oxide catalyst with oxygen vacancies. Characterizations showed that oxygen vacancies had been successfully introduced in tungsten oxide by a solution etching process in an acidic condition. The process not only gave rise to oxygen vacancies but also maintained the excellent amphiphilic feature of the catalyst. Both advantages of the catalysts led to a 100% sulfur removal from fuel oil and a 15 times recycling performance without a significant decrease in activity. Additionally, the adsorption and catalytic oxidative desulfurization process was proposed and further studied by gas chromatography–mass spectrometry (GC–MS).

Off-plane polarization in two dimensional materials is significant during the designation of functional nano-devices. As a prototype, the metal chalcogen-diphosphate CuInP 2 S 6 monolayer is selected, and the structure transition from the initial antiferroelectric (AFE) state to off-plane ferroelectric (FE) state is realized under the combined action of normal strain and electric field. With the introduce of compressed strain, the critical driven field for the transition is remarkably lowered, which is favorable for actual device operation and avoids the possible breakdown of film. As the compressed strain increases, the FE state changes to ground state, and the height of barrier between AFE state and FE state is lowered simultaneously. It is confirmed that the FE state keeps stable at room temperature even if the strain and the electric field are removed. Furthermore, the band gap of the monolayer changes from indirect to direct as the structure transition occurs, which will have potential photovoltaic applications. We hope our theoretical investigation can supply an alternative avenue to modify and improve the functionality of low-dimensional materials.