Determination of catechol in water based on gold nanoclusters-catalyzed chemiluminescence

Yang, Dongqin; He, Yanyan; Sui, Yanyan; Chen, Funan

doi:10.1016/j.jlumin.2017.02.067

Cited by 30 publications

(9 citation statements)

References 36 publications

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“…Another potential application is labeling AuNPs with luminol for ultrasensitive CL-based chemical analyses [ 45 ]. The quenching effect can also be utilized to detect molecules with special functional groups [ 46 ]. For specific detection, AuNPs can bind with antibodies or aptamers [ 47 , 48 ].…”

Section: Discussionmentioning

confidence: 99%

Integration of 3D Hydrodynamic Focused Microreactor with Microfluidic Chemiluminescence Sensing for Online Synthesis and Catalytical Characterization of Gold Nanoparticles

Wang

Seidel

2021

Sensors

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Chemiluminescence assays have shown great advantages compared with other optical techniques. Gold nanoparticles have drawn much attention in chemiluminescence analysis systems as an enzyme-free catalyst. The catalytic activity of gold nanoparticles for chemiluminescence sensing depends on size, shape and the surface charge property, which is hard to characterize in batches. As there is no positive or negative correlation between chemiluminescence signals and sizes of gold nanoparticles, the best way to get optimal gold nanoparticles is to control the reaction conditions via online chemiluminescence sensing systems. Therefore, a new method was developed for online synthesis of gold nanoparticles with a three-dimension hydrodynamic focusing microreactor, directly coupled with a microfluidic chemiluminescence sensing chip, which was coupled to a charge-coupled device camera for direct catalytical characterization of gold nanoparticles. All operations were performed in an automatic way with a program controlled by Matlab. Gold nanoparticles were synthesized through a single-phase reaction using glucose as a reducing agent and stabilizer at room temperature. The property of gold nanoparticles was easily controlled with the three-dimension microreactor during synthesis. The catalyst property of synthesized gold nanoparticles was characterized in a luminol–NaOCl chemiluminescence system. After optimizing parameters of synthesis, the chemiluminescence signal was enhanced to a factor of 171. The gold nanoparticles synthesized under optimal conditions for the luminol–NaOCl system were stable for at least one month. To further investigate the catalytic activity of synthesized gold nanoparticles in various situations, two methods were used to change the property of gold nanoparticles. After adding a certain amount of salt (NaCl), gold nanoparticles aggregated with a changed surface charge property and the catalytic activity was greatly enhanced. Glutathione was used as an example of molecules with thiol groups which interact with gold nanoparticles and reduce the catalytic activity. The chemiluminescence intensity was reduced by 98.9%. Therefore, we could show that using a microreactor for gold nanoparticles synthesis and direct coupling with microfluidic chemiluminescence sensing offers a promising monitoring method to find the best synthesis condition of gold nanoparticles for catalytic activity.

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Section: Discussionmentioning

confidence: 99%

Integration of 3D Hydrodynamic Focused Microreactor with Microfluidic Chemiluminescence Sensing for Online Synthesis and Catalytical Characterization of Gold Nanoparticles

Wang

Seidel

2021

Sensors

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“…The proposed method was applied successfully for rutin determination in pharmaceutical products. [23][24][25][26] . O presente trabalho descreve um procedimento analítico para a determinação de rutina em formulações farmacêuticas utilizando um sistema de análise por injeção em fluxo envolvendo multicomutação com a inibição do sinal quimiluminescente, produzido pela oxidação do luminol após a reação com hipoclorito de sódio.…”

Section: Palavras-chaveunclassified

Determinação de rutina em formulações farmacêuticas utilizando um sistema de análise por injeção em fluxo envolvendo multicomutação

et al. 2016

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____________________________________________________________________________Resumo: O presente trabalho descreve um método quimiluminescente de análise por injeção em fluxo envolvendo multicomutação, para a determinação de rutina em formulações farmacêuticas. O método é baseado na oxidação da rutina pelo hipoclorito de sódio, a qual promove o decréscimo da magnitude do sinal quimiluminescente, se comparado à reação na ausência de rutina. Sob condições otimizadas, foi obtida uma curva analítica para concentrações de rutina variando de 5.0 × 10 -6 mol L -1 a 1.0 × 10 -4 mol L -1 (r = 0,996) com um limite de detecção de 9.7 × 10 -7 mol L -1 e uma frequência de amostragem de 120 h -1. Estudos de repetibilidade para uma concentração de rutina de 7,0 x 10 -6 mol L -1 apresentaram um desvio padrão relativo (DPR) menor que 5,0% para 10 determinações consecutivas. O método proposto foi aplicado com sucesso na determinação de rutina em formulações farmacêuticas. Palavras-chave:Análise por injeção em fluxo, Rutina, Quimiluminescência, Multicomutação ____________________________________________________________________________ Abstract: This paper reports a flow injection chemiluminescence method involving multicommutation for rutin determination in pharmaceutical formulations. The method is based on the oxidation of rutin by sodium hypochlorite which decreases the signal magnitude when compared with the same reaction without the rutin. Under optimized conditions, an analytical curve was obtained for rutin concentration range from 5.0 × 10 -6 mol L -1 to 1.0 × 10 -4 mol L -1 (r = 0.9966) with detection limit of 9.7 × 10 -7 mol L -1 and a sampling frequency of 120 h -1 . Repeatability study for a 7.0 × 10 -6 mol L -1 rutine concentration showed a relative standard deviation (RSD) less than 5.0% for ten consecutives determination. The proposed method was applied successfully for rutin determination in pharmaceutical products.

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“…[ 3,4 ] The sensitivity of the luminol–H 2 O 2 CL reaction could be amplified using diverse catalytic systems. [ 5–9 ] Specifically, several ecofriendly catalysts, such as anionic peroxidase extracted from plants, have been shown to be highly sensitive to the oxidation of luminol in the absence of any enhancer. [ 10,11 ] For example, anionic peroxidases extracted from soybean, [ 12 ] African oil palm tree, [ 13 ] sweet potato, [ 14 ] royal palm leaf, [ 15 ] and Jatropha curcas [ 16 ] have been identified as potential catalysts for the luminol–H 2 O 2 CL reaction.…”

Section: Introductionmentioning

confidence: 99%

“…[ 18 ] Particularly, these catalysts were claimed to be highly sensitive, stability, selective, and there was no need to use enhancers to increase the efficiency of luminol due to the high sensitivity, long‐term CL, and high stability. Apart from these bio‐based catalysts, several metal‐based nanoparticles, such as silver, gold, and zinc oxide, [ 7–9 ] can offer higher sensitivity, selectivity, and stability, taking advantage of their large surface area. In addition, metal–organic frameworks (MOF), such as hemin‐encapsulated HKUST‐1 MOF, [ 19 ] Fe 3 O 4 , and metal–organic framework MIL‐101(Fe) [ 20 ] composite have been used to catalyze the luminol CL reaction.…”

Section: Introductionmentioning

confidence: 99%

“…metal-based nanoparticles, such as silver, gold, and zinc oxide, [7][8][9] can offer higher sensitivity, selectivity, and stability, taking advantage of their large surface area. In addition, metal-organic frameworks (MOF), such as hemin-encapsulated HKUST-1 MOF, [19] Fe 3 O 4 , and metal-organic framework MIL-101(Fe) [20] composite have been used to catalyze the luminol CL reaction.…”

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confidence: 99%

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Natural catalyst for luminol chemiluminescence: application to validate peroxide levels in commercial hair dyes

2022

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Here, we report a hydrothermally treated green leaves (Moringa oleifera) extract exploited as an efficient and highly sensitive catalyst to catalyze the chemiluminescence (CL) reaction of luminol. In the absence of enhancer, this green and hydrothermally treated catalyst was found to significantly enhance the CL intensity $3.5-fold compared with the traditionally used K 3 Fe(CN) 6 catalyst. The structure and surface morphology of the catalyst was elucidated using X-ray photoelectron spectroscopy, scanning electron microscopy, X-ray diffraction, and Raman spectroscopy. The synergistic effect of the catalyst in the CL reaction was systematically investigated in the presence of hydrogen peroxide using ultraviolet-visible and CL spectroscopy.Studies showed that the sensitivity of the catalyst could be amplified by adjusting several parameters such as pH of the medium and concentrations of the base and luminol. The sensitivity of the novel-type catalyst was examined through the validation of hydrogen peroxide levels in commercial hair dye samples. Markedly, the catalyst displayed ultrasensitivity to hydrogen peroxide as the limit of detection of hydrogen peroxide using this catalyst was determined to be 0.02 μM under optimized conditions. In general, the proposed inexpensive, ecofriendly, and nontoxic catalyst could enable the determination of hydrogen peroxide for diverse analytical applications.

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Determination of catechol in water based on gold nanoclusters-catalyzed chemiluminescence

Cited by 30 publications

References 36 publications

Integration of 3D Hydrodynamic Focused Microreactor with Microfluidic Chemiluminescence Sensing for Online Synthesis and Catalytical Characterization of Gold Nanoparticles

Integration of 3D Hydrodynamic Focused Microreactor with Microfluidic Chemiluminescence Sensing for Online Synthesis and Catalytical Characterization of Gold Nanoparticles

Determinação de rutina em formulações farmacêuticas utilizando um sistema de análise por injeção em fluxo envolvendo multicomutação

Natural catalyst for luminol chemiluminescence: application to validate peroxide levels in commercial hair dyes

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