Co3O4/CuO hollow nanocage hybrids with high oxidase-like activity for biosensing of dopamine

Zhuang, Yunxia; Zhang, Xiaodan; Chen, Qiumeng; Li, Siqi; Cao, Haiyan; Huang, Yuming

doi:10.1016/j.msec.2018.10.038

Cited by 70 publications

(27 citation statements)

References 80 publications

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“…[45] By contrast, NiMo 6 @Co 3 O 4 (2) show a relative broadening and blue shifting of Raman-active peaks, maybe due to the alteration of the surrounding of the tetrahedral and octahedral sites in To evaluate the peroxidase-mimicking activity of samples, the catalytic oxidation of TMB was performed in the presence of H 2 O 2 . As shown in Figure S10, an absorbance peak at 661 nm and the color change from colorless to typical blue was observed in 5 [22,[46][47][48] but the weaker activity and longer reaction time in the NiMo 6 @Co 3 O 4 (2)-TMB system can result in the negligible signals.…”

Section: Resultsmentioning

confidence: 98%

Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

Sha

et al. 2021

Chemistry A European J

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Developing highly active and sensitive peroxidase mimics for L -cysteine ( L -Cys) colorimetric detection is very important for biotechnology and medical diagnosis. Herein, polyoxometalate-doped porous Co 3 O 4 composite (NiMo 6 @Co 3 O 4 ) was designed and prepared for the first time. Compared with pure and commercial Co 3 O 4 , NiMo 6 @Co 3 O 4 (n) composites exhibit the enhanced peroxidase-mimicking activities and stabilities due to the strong synergistic effect between porous Co 3 O 4 and multi-electron NiMo 6 clusters.Moreover, the peroxidase-mimicking activities of NiMo 6 @Co 3 O 4 (n) composites are heavily dependent on the doping mass of NiMo 6 , and the optimized NiMo 6 @Co 3 O 4 (2) exhibits the superlative peroxidase-mimicking activity. More importantly, a sensitive L -Cys colorimetric detection is developed with the sensitivity of 0.023 μM À 1 and the detection limit at least 0.018 μM in the linear range of 1-20 μM, which is by far the best enzyme-mimetic performances, to the best our knowledge.

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Section: Resultsmentioning

confidence: 98%

Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

Sha

et al. 2021

Chemistry A European J

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“…As shown in Figure B, when there is no addition of nanozyme, there are no absorption peaks (curves a and b), regardless of the existence of H 2 O 2 . When only TMB and CuS QDs/Co 3 O 4 polyhedra exist, the absorption peak (curve c) slightly increased, which could be attributed to the oxidase-like activity of Co 3 O 4 itself . After the introduction of Co 3 O 4 or CuS QDs/Co 3 O 4 polyhedra in sodium acetate buffer (containing TMB and H 2 O 2 , pH 4.0), two obvious absorption peaks could be observed (curves d and e), indicating that both Co 3 O 4 and CuS QDs/Co 3 O 4 polyhedra possessed excellent peroxidase-like abilities.…”

Section: Resultsmentioning

confidence: 99%

CuS QDs/Co₃O₄ Polyhedra-Driven Multiple Signal Amplifications Activated h-BN Photoeletrochemical Biosensing Platform

et al. 2020

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Herein, we developed an unmodified hexagonal boron nitride (h-BN) photoelectrochemical (PEC) biosensing platform with a low background signal and high sensitivity based on CuS quantum dots (QDs)/Co3O4 polyhedra-driven multiple signal amplifications. The prepared porous h-BN nanosheets with large specific surface areas, as the photoelectric substrate material, can provide extensive active reaction sites. Meanwhile, the CuS QDs/Co3O4 polyhedra were synthesized by the zeolitic imidazolate framework (ZIF-67) and utilized as a multiple signal amplifier, which can not only drive the p-n semiconductor quenching effect to compete with the h-BN photoelectrode for the consumption of electron donors and exciting light but also trigger a mimetic enzymatic catalytic precipitation effect to inhibit electron transfer. The quenching ability and peroxidase-like activity of CuS QDs/Co3O4 polyhedra were evaluated to prove its superiority, and the possible mechanisms of electron transfer and enzymatic catalytic were further analyzed in detail. The developed PEC biosensing platform for the chlorpyrifos assay presented outstanding performance with a wide linear range from 1 × 10–1 to 1 × 107 ng mL–1 and a low detection limit of 0.34 pg mL–1 and exhibited excellent selectivity, reproducibility, and stability. In addition, the CuS QDs/Co3O4 polyhedra-activated h-BN PEC biosensing platform may exhibit universality for various analytes via replacing the corresponding target aptamer sequence. This work provides a remarkable inspiration and valuable reference for the development of the PEC biosensor, and the signal amplifier-enabled unmodified PEC biosensing platform strategy has a bright application in early safety warning, bioanalysis and clinical diagnosis.

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“…In contrast, the existence of AA in the system induced apparent colour fading (Scheme 1c) and decline in the absorbance value. This change was ascribed to oxidation of AA by dissolved oxygen [ 24 ] , reducing the dissolved oxygen content in the system and finally resulting in a decrease in production of oxTMB. Consequently, the production of oxTMB was decreased along with the increasing AA content.…”

Section: Resultsmentioning

confidence: 99%

Colorimetric strategy for ascorbic acid detection based on the oxidase‐like activity of silver nanoparticle single‐walled carbon nanotube composites

Yan

Xiao

et al. 2020

Luminescence

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A colorimetric assay for the determination and quantification of ascorbic acid (AA) is presented using silver nanoparticle (AgNP) single-walled carbon nanotube (AgNP/SWCNT) nanocomposites prepared using a microwave-assisted method. The AgNP/SWCNT nanocomposites possessed oxidase-like properties toward 3,3 0 ,5,5 0tetramethylbenzidine (TMB) and could catalyze the oxidation of TMB to form a blue oxidation product (λ max = 652 nm) in the absence of H 2 O 2. AA can specifically inhibit the oxidation of TMB, resulting in a decline of the absorbance value and blue colour fading. As such, amounts of AA can be assessed easily by the unaided eye and quantitatively using an ultraviolet-visible light spectrophotometer. Under the optimal reaction conditions, this strategy showed a good linearity ranging from 0.4 μM to 5.0 μM for AA detection, and the limit of detection was 130 nM. This assay was also applied for AA measurement in vitamin C tablets and juice samples that yielded satisfactory results.

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Co3O4/CuO hollow nanocage hybrids with high oxidase-like activity for biosensing of dopamine

Cited by 70 publications

References 80 publications

Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

CuS QDs/Co₃O₄ Polyhedra-Driven Multiple Signal Amplifications Activated h-BN Photoeletrochemical Biosensing Platform

Colorimetric strategy for ascorbic acid detection based on the oxidase‐like activity of silver nanoparticle single‐walled carbon nanotube composites

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Co3O4/CuO hollow nanocage hybrids with high oxidase-like activity for biosensing of dopamine

Cited by 70 publications

References 80 publications

Hollow POM@MOF‐derived Porous NiMo6@Co3O4 for Biothiol Colorimetric Detection

Hollow POM@MOF‐derived Porous NiMo6@Co3O4 for Biothiol Colorimetric Detection

CuS QDs/Co3O4 Polyhedra-Driven Multiple Signal Amplifications Activated h-BN Photoeletrochemical Biosensing Platform

Colorimetric strategy for ascorbic acid detection based on the oxidase‐like activity of silver nanoparticle single‐walled carbon nanotube composites

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Product

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Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

Hollow POM@MOF‐derived Porous NiMo₆@Co₃O₄ for Biothiol Colorimetric Detection

CuS QDs/Co₃O₄ Polyhedra-Driven Multiple Signal Amplifications Activated h-BN Photoeletrochemical Biosensing Platform