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首页> 外文期刊>Nanotechnology >Mussel-inspired synthesis of boron nitride nanosheet-supported gold nanoparticles and their application for catalytic reduction of 4-nitrophenol
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Mussel-inspired synthesis of boron nitride nanosheet-supported gold nanoparticles and their application for catalytic reduction of 4-nitrophenol

机译：贻贝启发的氮化硼纳米片负载金纳米颗粒的合成及其在催化还原4-硝基苯酚中的应用

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摘要

Gold nanoparticle (AuNP)-decorated boron nitride nanosheet (BNNS) was successfully prepared through the simultaneous reduction of Au3(+) ions and the growth of AuNPs on polydopamine (PDA)-grafted BNNS. Both BNNS-AuNP and PDA-BNNS are successfully synthesized in an aqueous buffer solution (pH 8.5) in the absence of any chemical reducing agent and organic reaction, which is therefore environmentally friendly and highly beneficial for the mass production of green catalysts from 2D nanomaterials. BNNS-AuNP showed remarkable dispersion stability in aqueous media and revealed high catalytic efficiency for the reduction of nitrophenol as (4-NP) into 4-aminophenol (4-AP) within 8 min in water. The 2D structural feature of BNNS-AuNP also enables isolation and recycling of catalyst from 4-AP through the ultracentrifugation, which shows the retention of more than 60% of catalytic activity of BNNS-AuNP after five repetitions of the of recycling steps.
机译：通过同时还原Au3（+）离子和在聚多巴胺（PDA）接枝的BNNS上生长AuNPs，成功地制备了装饰有纳米金（AuNP）的氮化硼纳米片（BNNS）。 BNNS-AuNP和PDA-BNNS均在缓冲液（pH 8.5）中成功合成，没有任何化学还原剂和有机反应，因此对环境友好，对于从二维纳米材料大规模生产绿色催化剂非常有利。 BNNS-AuNP在水介质中显示出显着的分散稳定性，并显示出在水中8分钟内将硝基苯酚（4-NP）还原为4-氨基苯酚（4-AP）的高催化效率。 BNNS-AuNP的2D结构特征还可以通过超速离心从4-AP中分离和回收催化剂，这表明BNNS-AuNP在重复五次回收步骤后保留了60％以上的催化活性。

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