Novel synthesis of NiS/MMT/GO nanocomposites with enhanced peroxidase-like activity for sensitive colorimetric detection of glutathione in solution

Chen, Miaomiao; Zhu, Jialong; Yang, Baochan; Yao, Xiuxiu; Liu, Qingyun; Lyu, Xintian

doi:10.1007/s42114-018-0045-2

Cited by 18 publications

(8 citation statements)

References 63 publications

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“…The characteristic peaks of WS 2 and GONRs are appeared in the XRD results as shown in Fig. 1 a,b and are in good agreement with those of previous reports 14 , 20 . Surface morphology and structure of the prepared materials were characterized by means of scanning electron microscope (SEM) and energy dispersive X-ray spectroscopy (EDS) maps.…”

Section: Resultssupporting

confidence: 91%

Room temperature and high response ethanol sensor based on two dimensional hybrid nanostructures of WS2/GONRs

Ahmadvand

zad

Mohammadpour

et al. 2020

Sci Rep

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Here in this research, room temperature ethanol and humidity sensors were prepared based on two dimensional (2D) hybrid nanostructures of tungsten di-sulfide (WS2) nanosheets and graphene oxide nanoribbons (GONRs) as GOWS. The characterization results based on scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (ESD), Raman spectroscopy and X-ray diffraction (XRD) analysis confirmed the hybrid formations. Ethanol sensing of drop-casted GOWS films on SiO2 substrate indicated increasing in gas response up to 5 and 55 times higher compared to pristine GONRs and WS2 films respectively. The sensing performance of GOWS hybrid nanostructures was investigated in different concentrations of WS2, and the highest response was about 126.5 at 1 ppm of ethanol in 40% relative humidity (R.H.) for WS2/GONRs molar ratio of 10. Flexibility of GOWS was studied on Kapton substrate with bending radius of 1 cm, and the gas response decreased less than 10% after 30th bending cycles. The high response and flexibility of the sensors inspired that GOWS are promising materials for fabrication of wearable gas sensing devices.

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Section: Resultssupporting

confidence: 91%

Room temperature and high response ethanol sensor based on two dimensional hybrid nanostructures of WS2/GONRs

Ahmadvand

zad

Mohammadpour

et al. 2020

Sci Rep

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“…As shown in Figure b, the ΔA (ΔA = A blank - A GSH ) increases with increasing of concentration of GSH, suggesting that the blue oxTMB was gradually changed to colorless TMB. It can be obtained that the linear response of GSH is in the range of 1–5 uM, with a detection limit of 0.45 × 10 –6 M lower than that of Co-MOCP/CPE, Probe 1, NiS/MMT/GO, and MoS 2 /rGO, reported in Table . − …”

Section: Resultsmentioning

confidence: 91%

Si Doped CoO Nanorods as Peroxidase Mimics for Colorimetric Sensing of Reduced Glutathione

Jin

Lian

Gao

et al. 2019

ACS Sustainable Chem. Eng.

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Si doped CoO nanorods (denoted as Si-CoO) were prepared by the hydrothermal method. The Si-CoO composites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray photoelectron spectra (XPS), etc. The results suggest that Si element uniformly distributed onto CoO nanorods with a diameter of 50–100 nm. The as-prepared Si-CoO nanocomposite possessed an excellent peroxidase-like activity as well as quickly catalyzed the colorless substrate 3,3,5,5-tetramethylbenzidine (TMB) to be oxidized into blue oxTMB by H2O2 only in 20 s, which was easily visually observed. The electron spin resonance (ESR) data confirms that superoxide radicals (•O2 –) play a key function in catalytic reaction. On the basis of the peroxidase biomimetic activity of Si-CoO, we constructed a new biosensor for detection of H2O2 and reduced glutathione (GSH) in the range of 1–100 uM with a limit of 0.22 and 0.45 uM, respectively.

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“…As shown in Figure S6a,b, Supporting Information, HMSN@Au NPs possess a high catalytic activity (over 50%) in a fairly broad range of pH (2–8) and temperature (20–70 °C), while natural enzymes were unstable in harsh physiological environments. [ 19,30 ] Meantime, steady‐state enzyme kinetic assay was conducted to evaluate the catalytic performance of HMSN@Au NPs. Obviously, HMSN@Au followed the typical Michaelis–Menten behavior (Figure S6c,d, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

A Dual‐Nanozyme‐Catalyzed Cascade Reactor for Enhanced Photodynamic Oncotherapy against Tumor Hypoxia

Chen

Song

Zhu

et al. 2021

Adv Healthcare Materials

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Tumor hypoxia is a typical characteristic of tumor microenvironment (TME), which seriously compromises the therapeutic effect of photodynamic therapy (PDT). The development of nanozymes with oxygen‐generation ability is a promising strategy to overcome the oxygen‐dependent of PDT but remained a great challenge. Herein, a dual‐nanozymes based cascade reactor HAMF is proposed to alleviate tumor hypoxia for enhanced PDT. The hollow mesoporous silica nanoparticles (HMSNs) are constructed as an excellent nanocarrier to load ultra‐small gold nanoparticles (Au NPs) and manganese dioxide (MnO2) shell via in situ reduction method, and further coordination with an efficient photosensitizer 4‐DCF‐MPYM (4‐FM), a thermally activated delayed fluorescence (TADF) fluorescein derivative. With the response to TME, MnO2 can catalyze endogenous H2O2 into O2 and subsequently accelerating glucose oxidation by Au NPs to produce additional H2O2, which is reversely used as the substrate for MnO2‐catalyzed reaction, thereby constantly producing singlet oxygen (1O2) for enhanced PDT upon light irradiation. This work proposed a cascade reactor based on dual‐nanozyme to relieve tumor hypoxia for effective tumor suppression, which may enrich the application of multi‐nanozymes in biomedicine.

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Novel synthesis of NiS/MMT/GO nanocomposites with enhanced peroxidase-like activity for sensitive colorimetric detection of glutathione in solution

Cited by 18 publications

References 63 publications

Room temperature and high response ethanol sensor based on two dimensional hybrid nanostructures of WS2/GONRs

Room temperature and high response ethanol sensor based on two dimensional hybrid nanostructures of WS2/GONRs

Si Doped CoO Nanorods as Peroxidase Mimics for Colorimetric Sensing of Reduced Glutathione

A Dual‐Nanozyme‐Catalyzed Cascade Reactor for Enhanced Photodynamic Oncotherapy against Tumor Hypoxia

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