Abstract
Graphene-analogue hexagonal boron nitride (h-BN) nanosheets are successfully synthesizedviaa facile and fast microwave-assisted method in 10 min and used as a novel adsorbent for the ultrafast removal of cationic organic dyes in aqueous solution.
Highlights
We developed a synthetic process to obtain porous Boron nitride (BN) nanosheets which relies on a fast microwave-assisted approach
The reaction between Na2B4O7$10H2O and NH4Cl takes place using the hot heating medium of CuO and the hexagonal boron nitride (h-BN) product was obtained within several minutes
We have successfully synthesized graphene-like hBN nanosheets by reacting borax and NH4Cl under microwave irradiation (MWI) in 10 min without any solvent or surfactant
Summary
During the past few decades, a large amount of wastewater containing organic dyes and pigments, toxic metal ions, and cleaning agents has been discharged into the aquatic environment with the rapid development of modern industry, which will lead to devastating consequences to all living organisms.[1,2] Especially, some colored organic dyes discharged from the plating, textile, and printing industries are resistant to biological degradation and generally stable to light, heat and oxidizing agents due to their complex aromatic structures.[3,4,5] synthetic organic dyes are highly visible and, even in small quantities, able to decrease gas solubility in water, and toxic, carcinogenic and mutagenic for human beings.[6,7,8,9,10] the removal of dye pollutants from effluent is quite desirous for water safety and human health protection. Over the past few decades, the microwave irradiation (MWI) technique has been developed for the fast synthesis of functional inorganic nanomaterials.[46] This method has unique effects and signi cant merits such as easy workup, rapid volumetric heating, high reaction rate, short reaction time, energy saving and production of inorganic nanoparticles with narrow size distribution compared with other methods. The morphology, structure and properties of the as-prepared h-BN nanosheets are fully characterized via various physical and spectroscopic methods and their adsorption performance evaluated towards some organic pollutants in aqueous solutions. This nanomaterial exhibits superior adsorption rate and selective adsorption ability for cationic dyes. All other chemicals were of analytical grade and were used as received
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