The peroxidase and oxidase-like activity of NiCo2O4 mesoporous spheres: Mechanistic understanding and colorimetric biosensing

Su, Li; Dong, Wenpei; Wu, Chengke; Gong, Yan; Zhang, Yan; Li, Ling; Mao, Guojiang; Feng, Suling

doi:10.1016/j.aca.2016.11.035

Cited by 96 publications

(44 citation statements)

References 46 publications

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“…peaks: Olatt at 529.3 eV which is mainly metal-oxygen bonds, Oads at 530.8 eV which may be surface species and defects, without any other satellite peak [29]. The surface Oads/Olatt molar ratio of the CoNi-6h-350 catalyst is 1.32, which is much higher than other samples.…”

Section: Textural Analysismentioning

confidence: 89%

“…Furthermore, when we increased the calcination temperature of catalysts, more Ni 2+ ions occupied the octahedral Co lattice sites, and the spinel structure of catalyst destroyed. In Figure 6c, O 1s spectra can be fitted with two peaks: O latt at 529.3 eV which is mainly metal-oxygen bonds, O ads at 530.8 eV which may be surface species and defects, without any other satellite peak [29]. The surface O ads /O latt molar ratio of the CoNi-6h-350 catalyst is 1.32, which is much higher than other samples.…”

Section: Textural Analysismentioning

confidence: 91%

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Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation

Wang

et al. 2019

Catalysts

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Rational design LDHs (layered double hydroxides) with 3D hierarchical hollow structures have generated widespread interest for catalytic oxidation due to the high complexity in shell architecture and composition. Herein, we reported a handy two-step method to construct a 3D hierarchical NiCo2O4/NiO nanocage. This synthetic strategy contains a partial in situ transformation of ZIF-67 (zeolitic imidazolate framework-67) into Co-NiLDH yolk-shelled structures following ethanol etching, and a structure-preserved transformation from Co-NiLDH@ZIF-67 to a biphase nanocage following calcination. CoNi-yh-T (varied reaction time and calcination temperature) nanocages were investigated systematically by Brunauer–Emmett–Teller (BET), X-ray photoelectron spectroscopy (XPS), H2- temperature-programmed reduction (TPR), NH3-temperature-programmed desorption (TPD) and studied for toluene oxidation. The CoNi-6h-350 sample showed much higher activity with 90% toluene conversion (T90) at 229 °C at a high space velocity (SV = 60,000 mL g−1 h−1) than other catalysts (T90 >240 °C). Abundant surface high valence Co ions caused by the novel hierarchical nanostructures, together with adsorbed oxygen species and abundant medium-strength surface acid sites, played a key role for catalytic activities.

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Section: Textural Analysismentioning

confidence: 89%

Section: Textural Analysismentioning

confidence: 91%

Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation

Wang

et al. 2019

Catalysts

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“…Other metal oxide nanomaterials such as MnO 2 nanowires, V 2 O 5 nanowires, NiO NPs and NiC O2 O 4 mesoporous spheres are confirmed to possess intrinsic peroxidase‐like activity and used to fabricate colorimetric glucose biosensor as well (see Table 3 ). Those peroxidase‐like of metal oxides‐based nanomaterials are show a good selectivity and sensitivity for the detection of glucose.…”

Section: Glucose Biosensormentioning

confidence: 99%

Peroxidase‐Like Activity of Smart Nanomaterials and Their Advanced Application in Colorimetric Glucose Biosensors

Liu

Huang

Qin

et al. 2019

Small

158

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Diabetes is a dominating health issue with 425 million people suffering from the disease worldwide and 4 million deaths each year. To avoid further complications, the diabetic patient blood glucose level should be strictly monitored despite there being no cure for diabetes. Colorimetric biosensing has attracted significant attention because of its low cost, simplicity, and practicality. Recently, some nanomaterials have been found that possess unexpected peroxidase‐like activity, and great advances have been made in fabricating colorimetric glucose biosensors based on the peroxidase‐like activity of these nanomaterials using glucose oxidase. Compared with natural horseradish peroxidase, the nanomaterials exhibit flexibility in structure design and composition, and have easy separation and storage, high stability, simple preparation, and tunable catalytic activity. To highlight the significant progress in the field of nanomaterial‐based peroxidase‐like activity, this work discusses the various smart nanomaterials that mimic horseradish peroxidase and its mechanism and development history, and the applications in colorimetric glucose biosensors. Different approaches for tunable peroxidase‐like activity of nanomaterials are summarized, such as size, morphology, and shape; surface modification and coating; and metal doping and alloy. Finally, the conclusion and challenges facing peroxidase‐like activity of nanomaterials and future directions are discussed.

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“…In 2007, we reported the landmark paper that Fe 3 O 4 nanoparticles (NPs) have intrinsic peroxidase-like activity (Gao et al, 2007), and since that time nanozymes have increasingly attracted attention from a broad spectrum of scientists and technologists because of their high catalytic activity, low cost, and high stability (Gao and Yan, 2016). To date, there are more than 300 types of nanomaterials that have been found to possess the intrinsic enzyme-like activity, including the peroxidase activity of Fe 3 O 4 (Gao et al, 2007), Co 3 O 4 (Mu et al, 2012), CuO , V 2 O 5 (André et al, 2011), MnFeO 3 (Chi et al, 2018), FeS (Dai et al, 2009), graphene quantum dots (Nirala et al, 2017), CeO 2 (Xue et al, 2012), BiFeO 3 (Wei et al, 2010), CoFe 2 O 4 (He et al, 2010), FeTe (Roy et al, 2012), gold@carbon dots (Zheng et al, 2016); oxidase activity of Au (Comotti et al, 2004), Pt , CoFe 2 O 4 (Zhang et al, 2013), MnO 2 (Xing et al, 2012), CuO NPs (Hu et al, 2017) and NiCo 2 O 4 (Su et al, 2017); catalase activity of CeO 2 NPs (Talib et al, 2010), Pt-Ft NPs (Fan et al, 2011), Ir NPs (Su et al, 2015), MoS 2 nanosheets , Prussian Blue NPs ; superoxide oxidase activity of CeO 2 (Tarnuzzer et al, 2005), Fullerene (Ali et al, 2004), FePO 4 microflowers , Gly-Cu (OH) 2 NPs (Korschelt et al, 2017), N-PCNs ; haloperoxidase activity of V 2 O 5 nanowire (Natalio et al, 2012), CeO 2x Nanorods (Herget et al, 2017); sulfite oxidase activity of MoO 3 NPs (Ragg et al, 2014); phosphatase activity of CeO 2 (Kuchma et al, 2010), Fe 2 O 3 NPs (Huang, 2018); phosphotriesterase activity of Co 3 O 4 /GO nanocomposites , CeO 2 NPs (Vernekar et al, 2016), MOF-808 (M = Zr) (Mondal and H...…”

Section: Introductionmentioning

confidence: 99%

Nanozymes: A New Disease Imaging Strategy

Wang

Hong

et al. 2020

Front. Bioeng. Biotechnol.

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Nanozymes are nanomaterials with intrinsic enzyme-like properties. They can specifically catalyze substrates of natural enzymes under physiological condition with similar catalytic mechanism and kinetics. Compared to natural enzymes, nanozymes exhibit the unique advantages including high catalytic activity, low cost, high stability, easy mass production, and tunable activity. In addition, as a new type of artificial enzymes, nanozymes not only have the enzyme-like catalytic activity, but also exhibit the unique physicochemical properties of nanomaterials, such as photothermal properties, superparamagnetism, and fluorescence, etc. By combining the unique physicochemical properties and enzyme-like catalytic activities, nanozymes have been widely developed for in vitro detection and in vivo disease monitoring and treatment. Here we mainly summarized the applications of nanozymes for disease imaging and detection to explore their potential application in disease diagnosis and precision medicine.

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The peroxidase and oxidase-like activity of NiCo2O4 mesoporous spheres: Mechanistic understanding and colorimetric biosensing

Cited by 96 publications

References 46 publications

Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation

Self-Templating Synthesis of 3D Hierarchical NiCo2O4@NiO Nanocage from Hydrotalcites for Toluene Oxidation

Peroxidase‐Like Activity of Smart Nanomaterials and Their Advanced Application in Colorimetric Glucose Biosensors

Nanozymes: A New Disease Imaging Strategy

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