A dual colorimetric and SERS detection of Hg2+ based on the stimulus of intrinsic oxidase-like catalytic activity of Ag-CoFe2O4/reduced graphene oxide nanocomposites

Guo, Yue; Tao, Yong; Ma, Xiaochen; Jin, Jing; Wen, Sisi; Ji, Wei; Song, Wei; Ozaki, Yukihiro

doi:10.1016/j.cej.2018.05.135

Cited by 99 publications

(43 citation statements)

References 70 publications

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“…Thereupon, it can accumulate continuously in the body through water and food. In a report, dual colorimetric and SERS detection of Hg 2+ was developed based on the stimulus of intrinsic oxidase-like catalytic activity of Ag-CoFe 2 O 4 /rGO nanocomposites [ 55 ]. CoFe 2 O 4 nanoparticles in Ag-CoFe 2 O 4 /rGO nanocomposites exhibited an oxidase-like activity, which can quickly catalyze the oxidation of typical chromogenic substrates 3,3ʹ,5,5ʹ-tetramethylbenzidine (TMB) in the presence of dissolved oxygen.…”

Section: Metal Ionsmentioning

confidence: 99%

Multienzymes activity of metals and metal oxide nanomaterials: applications from biotechnology to medicine and environmental engineering

Alizadeh

Salimi

2021

J Nanobiotechnol

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With the rapid advancement and progress of nanotechnology, nanomaterials with enzyme-like catalytic activity have fascinated the remarkable attention of researchers, due to their low cost, high operational stability, adjustable catalytic activity, and ease of recycling and reuse. Nanozymes can catalyze the same reactions as performed by enzymes in nature. In contrast the intrinsic shortcomings of natural enzymes such as high manufacturing cost, low operational stability, production complexity, harsh catalytic conditions and difficulties of recycling, did not limit their wide applications. The broad interest in enzymatic nanomaterial relies on their outstanding properties such as stability, high activity, and rigidity to harsh environments, long-term storage and easy preparation, which make them a convenient substitute instead of the native enzyme. These abilities make the nanozymes suitable for multiple applications in sensing and imaging, tissue engineering, environmental protection, satisfactory tumor diagnostic and therapeutic, because of distinguished properties compared with other artificial enzymes such as high biocompatibility, low toxicity, size dependent catalytic activities, large surface area for further bioconjugation or modification and also smart response to external stimuli. This review summarizes and highlights latest progress in applications of metal and metal oxide nanomaterials with enzyme/multienzyme mimicking activities. We cover the applications of sensing, cancer therapy, water treatment and anti-bacterial efficacy. We also put forward the current challenges and prospects in this research area, hoping to extension of this emerging field. In addition to therapeutic potential of nanozymes for disease prevention, their practical effects in diagnostics, to monitor the presence of SARS-CoV-2 and related biomarkers for future pandemics will be predicted.

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Section: Metal Ionsmentioning

confidence: 99%

Multienzymes activity of metals and metal oxide nanomaterials: applications from biotechnology to medicine and environmental engineering

Alizadeh

Salimi

2021

J Nanobiotechnol

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“…Nanozymes vary in structure and composition, and include metal oxides, [37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] metals, 17,[53][54][55][56][57][58][59][60][61][62][63][64][65][66][67][68][69][70][71] and carbon-based nanomaterials. [72][73][74][75][76][77][78] However, most of the catalytic reactions mediated by nanozymes 46 employ the following four kinds of enzymic reactions: oxidase (OXD), peroxidase (POD), catalase (CAT) and superoxide dismutase (SOD) (Table 1).…”

Section: Classification and Catalytic Mechanisms Of Nanozymementioning

confidence: 99%

Applications of nanozymes in the environment

Meng

Pan

et al. 2020

Environ. Sci.: Nano

107

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“…Surface-enhanced Raman spectroscopy (SERS) is a promising ultrasensitive spectral analysis technique because of its high selectivity, based on molecular fingerprinting and sensitivity, even at single-molecule detection levels [ 59 – 61 ]. With strong electromagnetic fields and surface chemistry enhancements, SERS can increase the original Raman signal to 10 6 orders or more [ 62 ]. Recently, the SERS sensors have been utilized for the analysis of a variety of substances including DNA, protein, metal ions, and pesticides [ 63 – 65 ].…”

Section: Surface-enhanced Raman Scattering For Live Cell Analysismentioning

confidence: 99%

Analytical Methods for Detection of Gasotransmitter Hydrogen Sulfide Released from Live Cells

Quan

Lee

2021

BioMed Research International

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Hydrogen sulfide (H2S) plays an important role in mammals as a signaling molecule. Recently, abnormal H2S concentration has been associated with several pathophysiological states, such as diabetes mellitus, hypertension, Alzheimer’s disease, and Parkinson’s disease. As regulating H2S concentration can be a very prominent way of developing new drugs, many researchers have paid great attention to H2S research. To understand the role of H2S in pathophysiology and develop H2S-based therapies, it is necessary to measure the exact concentration of H2S within biological systems. But, H2S is volatile and can be easily oxidized. Besides, the active sites for several biological effects of H2S are inside the cell. Therefore, there is a need for the development of new methods for the accurate and reliable detection of H2S within live cells. This review provides a summary of recent developments in H2S detection methods for live cell analysis.

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A dual colorimetric and SERS detection of Hg2+ based on the stimulus of intrinsic oxidase-like catalytic activity of Ag-CoFe2O4/reduced graphene oxide nanocomposites

Cited by 99 publications

References 70 publications

Multienzymes activity of metals and metal oxide nanomaterials: applications from biotechnology to medicine and environmental engineering

Multienzymes activity of metals and metal oxide nanomaterials: applications from biotechnology to medicine and environmental engineering

Applications of nanozymes in the environment

Analytical Methods for Detection of Gasotransmitter Hydrogen Sulfide Released from Live Cells

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