Abstract
Boron nitride, also known as white graphene, has attracted extensive attention in the fields of adsorption, catalysis and hydrogen storage due to its excellent chemical properties. In this study, a phosphorus-doped boron nitride (P-BN) material was successfully prepared using red phosphorus as a dopant for the preparation of porous boron nitride precursors. The phosphorus content in the P-BN was adjusted based on the addition rate of phosphorus. The specific surface area of P-BN first increased and then decreased with increasing addition rate of phosphorus. The maximum specific surface area was 837.8 m2 g−1 when the phosphorus addition rate was 0.50. The P-BN prepared in the experiments was used as an adsorbent, and its adsorption capacity for heavy metals from flue gas was investigated. In particular, P-BN presented a stronger adsorption selectivity for zinc compared with other heavy metals, and its adsorption capacity for zinc was 5–38 times higher than for other heavy metals. The maximum adsorption capacity of P-BN for zinc and copper in a single heavy metal atmosphere was 69.45 and 53.80 mg g−1, respectively.
Highlights
Boron nitride is a novel porous material which has attracted the attention of many researchers [1,2,3,4,5]
The research and use of boron nitride have 2 demonstrated its good adsorption effects on antibiotics and chemical dyes in water [11,12,13,14]. Such as the boron nitride nanomaterial prepared by Singla et al adsorbed bright green and methyl orange and explained the feasibility of the interaction between the dye molecules and the adsorbed nanomaterial by density functional theory [15]; Song et al [16] studied the adsorption of the boron nitride bundles on antibiotics and found that it has higher adsorption capacity and superior removal percentage than the carbonaceous adsorbent, and his team has demonstrated through repeated experiments that boron nitride bundles have better reusability
The rough surface structure of phosphorus-doped boron nitride (P-BN) is the main factor leading to its high specific surface area, as shown in figure 1b
Summary
Boron nitride is a novel porous material which has attracted the attention of many researchers [1,2,3,4,5] It has been studied for hydrogen storage and adsorption applications due to its high specific surface area and chemical properties [6,7,8,9]. The research and use of boron nitride have 2 demonstrated its good adsorption effects on antibiotics and chemical dyes in water [11,12,13,14] Such as the boron nitride nanomaterial prepared by Singla et al adsorbed bright green and methyl orange and explained the feasibility of the interaction between the dye molecules and the adsorbed nanomaterial by density functional theory [15]; Song et al [16] studied the adsorption of the boron nitride bundles on antibiotics and found that it has higher adsorption capacity and superior removal percentage than the carbonaceous adsorbent, and his team has demonstrated through repeated experiments that boron nitride bundles have better reusability. When other substances are introduced by doping, the average adsorption energy is reduced, or the binding ability of the adsorbent is improved [22,23], thereby improving its adsorption capacity
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