Recent progress of transition metal-based bifunctional electrocatalysts for rechargeable zinc–air battery application

Current Opinion in Electrochemistry, Journal Year: 2023, Volume and Issue: 38, P. 101229 - 101229

Published: Feb. 4, 2023

Language: Английский

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Plasmon-Mediated Oxidase-like Activity on Ag@ZnS Heterostructured Hollow Nanowires for Rapid Visual Detection of Nitrite

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(4), P. 1659 - 1666

Published: Jan. 17, 2023

Rational design of fast and sensitive determination nitrite (NO2-) from a complicated actual sample overtakes crucial role in constructing high-efficiency sensing platform. Herein, visual NO2- platform with outstanding selectivity, sensitivity, stability based on surface plasmon resonance (SPR)-enhanced oxidase-like activity has been proposed. Benefiting the intrinsic photocatalytic limited light penetration ZnS, ZnS decorated Ag nanowires (Ag@ZnS) is determined. It demonstrated that electrons are generated efficiently then transferred into hot help localized SPR excitation, thus greatly oxidating colorless 3,3',5,5'-tetramethylbenzidine (TMB) to produce dark blue oxidized TMB (oxTMB). When added reaction system, oxTMB will selectively react generate diazotized oxTMB, leading color change green subsequently yellow. Owing specific recognition between recovery catalytic induced an enhanced colorimetric test wider linear range for determination, ultralow detection limit 0.1 μM, excellent practicability application real samples. This plasmon-enhanced not only provides smart approach realize assay high sensitivity simplicity but also modulates activities.

Language: Английский

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N-Doped Carbon Nanotubes Supported Fe–Mn Dual-Single-Atoms Nanozyme with Synergistically Enhanced Peroxidase Activity for Sensitive Colorimetric Detection of Acetylcholinesterase and Its Inhibitor

Analytical Chemistry, Journal Year: 2023, Volume and Issue: 95(22), P. 8640 - 8648

Published: May 23, 2023

Monitoring acetylcholinesterase (AChE) and its inhibitors is of importance for early diagnosis therapy neurological diseases. Herein, N-doped carbon nanotubes supported Fe–Mn dual-single-atoms (FeMn DSAs/N-CNTs) were fabricated by a simple pyrolysis, as thoroughly figured out series the characterization techniques. The peroxidase-like activity FeMn DSAs/N-CNTs was investigated catalytic oxidation 3,3′,5,5′-tetramethylbenzidine (TMB) to generate rich hydroxyl radicals (·OH) in H2O2 system, which effectively catalyzed colorless TMB blue oxidized (ox-TMB). Besides, greatly weakened thiocholine (derived from AChE), accompanied making ox-TMB fade. Impressively, highly improved property further evidenced density functional theory (DFT) calculations, where dual-single atoms show lower energy barrier (0.079 eV) their interactions with N-CNTs played critical roles producing oxygen radicals. By virtue nanozyme, low-cost, specific, sensitive colorimetric sensor built detection AChE broader linear range 0.1–30 U L–1 limit (LOD, 0.066 L–1), combined feasible analysis human serum samples. Also, this platform applied measuring huperzine A inhibitor wide scope 5–500 nM LOD down 4.17 nM. This strategy provides low-cost convenient approach clinical drug development.

Language: Английский

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In-situ construction of 3D hetero-structured sulfur-doped nanoflower-like FeNi LDH decorated with NiCo Prussian blue analogue cubes as efficient electrocatalysts for boosting oxygen evolution reaction

Journal of Colloid and Interface Science, Journal Year: 2021, Volume and Issue: 611, P. 205 - 214

Published: Dec. 16, 2021

Language: Английский

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Aminouracil-assisted synthesis of CoFe decorated bougainvillea-like N-doped carbon nanoflowers for boosting Zn–air battery and water electrolysis

Journal of Power Sources, Journal Year: 2021, Volume and Issue: 521, P. 230926 - 230926

Published: Dec. 20, 2021

Language: Английский

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Electronic Regulation of ZnCo Dual‐Atomic Active Sites Entrapped in 1D@2D Hierarchical N‐Doped Carbon for Efficient Synergistic Catalysis of Oxygen Reduction in Zn–Air Battery

Small, Journal Year: 2022, Volume and Issue: 18(14)

Published: Feb. 18, 2022

Transition metal-based nitrogen-doped carbon (M-Nx -C) is considered as a promising catalyst for the oxygen reduction reaction (ORR) in clean energy storage and conversion devices. Herein, ZnCo dual-atomic sites are incorporated hierarchical N-doped (HNC), with 1D nanotubes wrapped 2D nanosheets structure (termed 1D@2D ZnCo-HNC), via one-step bio-inspired pyrolysis. The feeding ratio of Zn to Co precursor pyrolytic temperature critically modulated achieve well-defined morphologies products, endowing them integrated merits efficient ORR catalysts. Benefiting from particular electronic regulation on Co, ZnCo-Nx system exhibits excellent catalytic characteristics an onset potential 1.05 V half-wave 0.82 V. Density functional theory calculations further explain regulating role Zn, such that adjusted significantly reduces cost ultimately facilitate ORR. Moreover, Zn-air battery assembled ZnCo-HNC capable delivering maximum power density 123.7 mW cm-2 robust stability 110 h (330 cycles). This method provides strategy fabricating transition catalysts green

Language: Английский

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Label-free electrochemical immunosensor based on l-cysteine-functionalized AuNP on reduced graphene oxide for the detection of dengue virus E-protein in dengue blood serum

Composites Part B Engineering, Journal Year: 2022, Volume and Issue: 238, P. 109876 - 109876

Published: April 10, 2022

Language: Английский

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Catalytic oxidation of VOCs over 3D@2D Pd/CoMn2O4 nanosheets supported on hollow Al2O3 microspheres

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 613, P. 155 - 167

Published: Jan. 7, 2022

Language: Английский

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Atomic ruthenium coordinated with chlorine and nitrogen as efficient and multifunctional electrocatalyst for overall water splitting and rechargeable zinc-air battery

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 441, P. 136078 - 136078

Published: March 29, 2022

Language: Английский

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A catalyst-free preparation of conjugated poly iron-phthalocyanine and its superior oxygen reduction reaction activity

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 445, P. 136784 - 136784

Published: May 6, 2022

Language: Английский

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