Hydrothermally driven three-dimensional evolution of mesoporous hierarchical europium oxide hydrangea microspheres for non-enzymatic sensors of hydrogen peroxide detection

Yan, Yibo; Li, Kaixin; Thia, Larissa; Dai, Yihu; Zhao, Jun; Chen, Xiaoping; Yang, Yanhui; Lee, Jongmin

doi:10.1039/c6en00053c

Cited by 11 publications

(7 citation statements)

References 34 publications

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“…They discovered that the polycrystalline GdO x possesses oxidation/reduction behaviors when in contact with H 2 O 2 . Nonetheless, studies regarding gadolinium oxide nanostructure design for electrode material of sensors are hardly searchable, although rare earth oxides based electrochemical sensors were successively discovered for novel sensor development …”

Section: Figurementioning

confidence: 99%

Hierarchical Gadolinium Oxide Microspheres for Enzymeless Electro‐biosensors in Hydrogen Peroxide Dynamic Detection

et al. 2016

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A porous gadolinium oxide spherically hierarchical structure (Gd2O3‐ms) has been developed by using a hydrothermal method to perform enzymeless dynamic detection of hydrogen peroxide (H2O2), based on its high sensitivity in electrocatalytic reduction of H2O2. X‐ray diffraction, X‐ray photoelectron spectroscopy, field‐emission scanning electron microscopy, transmission electron microscopy, and high‐resolution transmission electron microscopy have assisted in shedding light on the morphology, material formation process, structure, and properties of the porous gadolinium oxide microspheres. The linear range from 1 to 450 μM (linear correlation coefficient 0.991), sensitivity of 13.9 μA mM−1, and fine detection limit with a prompt current response attaining stable value were achieved by this enzymeless sensor, which was also employed to implement the dynamic tracing of H2O2‐releasing processes.

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Section: Figurementioning

confidence: 99%

Hierarchical Gadolinium Oxide Microspheres for Enzymeless Electro‐biosensors in Hydrogen Peroxide Dynamic Detection

et al. 2016

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“…Specifically, biosensors have been developed on the basis of electrocatalysis of immobilized enzymes arising from H 2 O 2 reduction 9 . However, the enzyme-based biosensors are limited by sensitivity to environmental conditions, high cost, short shelf-life and complicated immobilization procedures 10 – 12 . Meanwhile, fluorescent strategies have lots of advantages, particularly rapid response, high sensitivity, and simple manipulation 13 , 14 .…”

Section: Introductionmentioning

confidence: 99%

Turn-on Luminescent Probe for Hydrogen Peroxide Sensing and Imaging in Living Cells based on an Iridium(III) Complex–Silver Nanoparticle Platform

Liu

Dong

Yang

et al. 2017

Sci Rep

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A sensitive turn-on luminescent sensor for H 2 O 2 based on the silver nanoparticle (AgNP)-mediated quenching of an luminescent Ir(III) complex (Ir-1) has been designed. In the absence of H 2 O 2 , the luminescence intensity of Ir-1 can be quenched by AgNPs via non-radiative energy transfer. However, H 2 O 2 can oxidize AgNPs to soluble Ag + cations, which restores the luminescence of Ir-1. The sensing platform displayed a sensitive response to H 2 O 2 in the range of 0−17 μM, with a detection limit of 0.3 μM. Importantly, the probe was successfully applied to monitor intracellular H 2 O 2 in living cells, and it also showed high selectivity for H 2 O 2 over other interfering substances.

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“…Multifunctional hollow porous microspheres, have been widely used in the fields of controlled release 11 , catalysis 12 , adsorption 13 , 14 , drug delivery 15 , 16 , electrode material 17 , sensors 18 and microreactors 19 . Recently, yeast 20 , 21 , pollen 22 , spores 23 , 24 and chlorella 25 have been converted into hollow porous microspheres by directly using the natural spherical morphology and components of these micro-organisms via hydrothermal carbonization (HTC), solvent extraction, or carbonization method.…”

Section: Introductionmentioning

confidence: 99%

From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials

Pan

2017

Sci Rep

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Harmful algal blooms (HABs) induced by eutrophication is becoming a serious global environmental problem affecting public health and aquatic ecological sustainability. A novel strategy for the utilization of biomass from HABs was developed by converting the algae cells into hollow mesoporous bio-hydrochar microspheres via hydrothermal carbonization method. The hollow microspheres were used as microreactors and carriers for constructing CaO2 core-mesoporous shell-CaO2 shell microspheres (OCRMs). The CaO2 shells could quickly increase dissolved oxygen to extremely anaerobic water in the initial 40 min until the CaO2 shells were consumed. The mesoporous shells continued to act as regulators restricting the release of oxygen from CaO2 cores. The oxygen-release time using OCRMs was 7 times longer than when directly using CaO2. More interestingly, OCRMs presented a high phosphate removal efficiency (95.6%) and prevented the pH of the solution from rising to high levels in comparison with directly adding CaO2 due to the OH− controlled-release effect of OCRMs. The distinct core-double-shell micro/nanostructure endowed the OCRMs with triple functions for oxygen controlled-release, phosphorus removal and less impact on water pH. The study is to explore the possibility to prepare smarter bio-hydrochar materials by utilizing algal blooms.

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Hydrothermally driven three-dimensional evolution of mesoporous hierarchical europium oxide hydrangea microspheres for non-enzymatic sensors of hydrogen peroxide detection

Abstract: Hydrothermal synthesis of mesoporous europium oxide hierarchical hydrangea microspheres for electrochemical detection of hydrogen peroxide (H2O2) has been successfully achieved.

Cited by 11 publications

References 34 publications

Hierarchical Gadolinium Oxide Microspheres for Enzymeless Electro‐biosensors in Hydrogen Peroxide Dynamic Detection

Hierarchical Gadolinium Oxide Microspheres for Enzymeless Electro‐biosensors in Hydrogen Peroxide Dynamic Detection

Turn-on Luminescent Probe for Hydrogen Peroxide Sensing and Imaging in Living Cells based on an Iridium(III) Complex–Silver Nanoparticle Platform

From harmful Microcystis blooms to multi-functional core-double-shell microsphere bio-hydrochar materials

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