Electronic structure modulation of ultrathin PtRuMoCoNi high-entropy alloy nanowires for boosting peroxidase-like activity and sensitive colorimetric determination of isoniazid and hydrazine

IF 5.3 2区 化学 Q1 CHEMISTRY, ANALYTICAL
Jia-Qi Li, Ai-Jun Wang, Pei Song, Jiu-Ju Feng, Qi Zhou, Tuck Yun Cheang
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Abstract

Self-supported ultrathin PtRuMoCoNi high-entropy alloy nanowires (HEANWs) were synthesized by a one-pot co-reduction method, whose peroxidase (POD)-like activity and catalytic mechanism were elaborated in detail. As expected, the PtRuMoCoNi HEANWs showed excellent POD-like activity. It can quickly catalyze the oxidization of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to blue OXTMB through decomposition of H2O2 to superoxide radicals. Notably, isoniazid and hydrazine effectively scavenge the as-produced superoxide radicals and reduce the blue OXTMB, showing high reduction ability and antioxidant property. Thus, the PtRuMoCoNi HEANW-derived colorimetric method was developed for determination of isoniazid and hydrazine, which exhibited the linear ranges of 1.5 to 50 μM and 25 to 200 μM coupled with the lower detection limits of 2.3 and 12.6 μM for isoniazid and hydrazine, respectively. The excellent analytical performance mainly results from the synergistic catalytic effect of the multiple metals and distinctive ultra-thin nanowires. This work provides a simple and rapid colorimetric method for the determination of isoniazid and hydrazine in actual samples.

Graphical Abstract

超薄PtRuMoCoNi高熵合金纳米线提高过氧化物酶样活性的电子结构调制及异烟肼和联氨的灵敏比色测定
采用一锅共还原法制备了自支撑超薄PtRuMoCoNi高熵合金纳米线(HEANWs),详细阐述了其过氧化物酶(POD)样活性和催化机理。正如预期的那样,PtRuMoCoNi HEANWs表现出优异的pod样活性。它能通过H2O2分解成超氧自由基,快速催化无色的3,3 ',5,5 ' -四甲基联苯胺(TMB)氧化为蓝色的OXTMB。其中异烟肼和肼能有效清除生成的超氧自由基,还原蓝色OXTMB,表现出较高的还原能力和抗氧化性能。由此,建立了基于PtRuMoCoNi heanw衍生的异烟肼和肼的比色测定方法,其线性范围为1.5 ~ 50 μM和25 ~ 200 μM,检出限分别为2.3 μM和12.6 μM。优异的分析性能主要得益于多种金属的协同催化作用和独特的超薄纳米线。本工作为实际样品中异烟肼和肼的测定提供了一种简便、快速的比色法。图形抽象
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来源期刊
Microchimica Acta
Microchimica Acta 化学-分析化学
CiteScore
9.80
自引率
5.30%
发文量
410
审稿时长
2.7 months
期刊介绍: As a peer-reviewed journal for analytical sciences and technologies on the micro- and nanoscale, Microchimica Acta has established itself as a premier forum for truly novel approaches in chemical and biochemical analysis. Coverage includes methods and devices that provide expedient solutions to the most contemporary demands in this area. Examples are point-of-care technologies, wearable (bio)sensors, in-vivo-monitoring, micro/nanomotors and materials based on synthetic biology as well as biomedical imaging and targeting.
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