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2D/2D h-BN/N-doped MoS2 Heterostructure Catalyst with Enhanced Peroxidase-like Performance for Visual Colorimetric Determination of H2 O2.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-03-11 , DOI: 10.1002/asia.201901753
Xin Zhang 1 , Yanfang Gao 1
Affiliation  

Recently, nanozymes have attracted extensive attention because of their advantages of combining nanomaterials with enzymes. Herein, hexagonal boron nitride (h-BN) and nitride-doped molybdenum disulfide (N-MoS2 ) nano-composites (h-BN/N-MoS2 ) were synthesized by facile and cost-effective liquid exfoliation with a solvothermal method in nontoxic ethanol solution. The results show that h-BN, as a co-catalyst, can not only dope into the lattice of MoS2 but also form a heterogeneous structure with MoS2 NSs. It expanded the layer spacing and specific surface area of MoS2 NSs, which was beneficial to the contact between the catalyst and the substrate, and resulted in a synergistic enhancement of the catalytic activity of hydrogen peroxide (H2 O2 ) with MoS2 . A colorimetric determination platform of h-BN/N-MoS2 -TMB-H2 O2 was constructed. It exhibited a wide linear range of 1-1000 μM with a low limit of detection (LOD) of 0.4 μM under optimal conditions, high sensitivity and stability, as well as good reliability (99.4-110.0%) in practice, making the measurement system more widely applicable.1. Introduction.

中文翻译:

可视化比色法测定H2 O2的2D / 2D h-BN / N掺杂MoS2异质结构催化剂,具有类似过氧化物酶的增强性能。

近来,纳米酶由于其将纳米材料与酶结合的优点而受到广泛关注。在这里,六方氮化硼(h-BN)和氮化物掺杂的二硫化钼(N-MoS2)纳米复合材料(h-BN / N-MoS2)是通过溶剂热法在无毒乙醇中进行简便且经济高效的液体剥离而合成的解。结果表明,h-BN作为助催化剂不仅可以掺杂到MoS2的晶格中,而且可以与MoS2 NSs形成异质结构。它扩大了MoS2 NSs的层间距和比表面积,有利于催化剂与底物之间的接触,并导致MoS2与H2 O2的催化活性协同增强。建立了h-BN / N-MoS2-TMB-H2 O2比色测定平台。它具有1-1000μM的宽线性范围,在最佳条件下的最低检测限(LOD)为0.4μM,在实践中具有很高的灵敏度和稳定性,以及良好的可靠性(99.4-110.0%),从而构成了测量系统适用范围更广1。介绍。
更新日期:2020-04-22
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