Search results for: Shaojun Dong

Items from 1 to 20 out of 407 results

article

Nanozymes

Lizeng Gao, Hui Wei, Shaojun Dong, Xiyun Yan

Advanced Materials > 36 > 10 > n/a - n/a

article

Recent Advances on Nanozyme‐based Electrochemical Biosensors

Xiaoyu Wang, Shaojun Dong, Hui Wei

Electroanalysis > 35 > 1 > n/a - n/a

Nanozymes are nanomaterials with enzyme‐like catalytic activities. The unique features of nanozymes (such as high stability, low cost, large surface area for bioconjugation, ease of storage, and multi‐functionalities) offer unprecedented opportunities for designing electrochemical biosensors. Recent years have witnessed the rapid development of nanozyme‐based electrochemical biosensors. To highlight...

article

Platinum‐Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis

Jinxing Chen, Qian Ma, Zhixuan Yu, Minghua Li, more

Angewandte Chemie > 134 > 48 > n/a - n/a

On‐site hydrogen peroxide production through electrocatalytic and photocatalytic oxygen reduction reactions has recently attracted broad research interest. However, practical applications have thus far been plagued by the low activity and the requirement of complex equipment. Here, inspired by the process of biological hydrogen peroxide synthesis catalyzed by enzymes, we report a Pt‐Au alloy to mimic...

article

Platinum‐Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis

Jinxing Chen, Qian Ma, Zhixuan Yu, Minghua Li, more

Angewandte Chemie International Edition > 61 > 48 > n/a - n/a

article

Self‐Indicative Gold Nanozyme for H₂O₂ and Glucose Sensing

Jinxing Chen, Weiwei Wu, Liang Huang, Qian Ma, more

Chemistry – A European Journal > 25 > 51 > 11940 - 11944

In addition to superior enzyme‐mimicking abilities, nanozymes also have intrinsic physicochemical properties. Integrating the enzyme‐like activities and tunable physicochemical properties into a single nanoparticle is a promising strategy for versatile nanozyme design and application. Herein, a composite nanozyme in which Au nanoparticles are encapsulated by Au nanoclusters (AuNP@AuNCs) is presented...

article

Preparation, performance, and application of a stable, sensitive and cost-effective microelectrode array

Dengbin Yu, Changyu Liu, Yufang Rao, Junfeng Zhai, more

Talanta > 2018 > 188 > C > 245-250

The development of rapid toxicity detection technology has higher requirements for electrode. In this work, a stable, sensitive and cost-effective microelectrode array (MEA) was successfully prepared manually. The advantage of the as-prepared MEA was discussed by means of detecting toxicity of 3,5-Dichlorophenol (3,5-DCP) by contrasting with bulk electrode and single microelectrode, in which mixed...

article

Nanozyme: An emerging alternative to natural enzyme for biosensing and immunoassay

Qingqing Wang, Hui Wei, Zhiquan Zhang, Erkang Wang, more

TrAC Trends in Analytical Chemistry > 2018 > 105 > C > 218-224

Nanozyme, a term defined for nanomaterial with enzyme-like properties, has attracted significant research attention owing to its striking merits. Recently, a surge of nanozymes have been demonstrated to catalyze some typical enzymatic reactions mimicking oxidase, peroxidase and catalase. Especially, nanozymes with peroxidase-like activity have grown into a big family due to their broad range of applications...

article

Prussian blue with intrinsic heme-like structure as peroxidase mimic

Jinxing Chen, Qingqing Wang, Liang Huang, Hui Zhang, more

Nano Research > 2018 > 11 > 9 > 4905-4913

Despite the intrinsic peroxidase-like activity of Prussian blue nanoparticles (PBNPs), their enzyme-mimic mechanism has been scarcely investigated to date. Herein, we probed the catalytic site of PBNPs for the first time, by comparing their peroxidase-like activity with that of a series of Prussian blue analogs (PBAs) in which Fe atoms were replaced by Co, Ni, and Cu. The PBNPs exhibited the highest...

article

Novel dual fluorescence temperature-sensitive chameleon DNA-templated silver nanocluster pair for intracellular thermometry

Weijun Zhou, Jinbo Zhu, Ye Teng, Baoji Du, more

Nano Research > 2018 > 11 > 4 > 2012-2023

For the first time, we are reporting a novel type of dual fluorescence temperature-sensitive DNA-templated silver nanocluster (AgNC) pair, which contains two pieces of single-stranded AgNC in proximity through hybridization. Both the chameleon AgNC pairs, A-NCP and B-NCP, possess two bright fluorescence peaks that achieve sensitive variations corresponding to temperature change from 15 to 45 °C. With...

article

Fuel‐Free Bio‐photoelectrochemical Cells Based on a Water/Oxygen Circulation System with a Ni:FeOOH/BiVO₄ Photoanode

He Zhang, You Yu, Lingling Zhang, Shaojun Dong

Angewandte Chemie > 130 > 6 > 1563 - 1567

A bio‐photoelectrochemical cell (BPEC) based on a fuel‐free self‐circulation water–oxygen–water system was fabricated. It consists of Ni:FeOOH modified n‐type bismuth vanadate (BiVO₄) photoanode and laccase catalyzed biocathode. In this BPEC, irradiation of the photoanode generates photocurrent for photo‐oxidation of water to oxygen, which is reduced to water again at the laccase biocathode. Of note,...

article

Fuel‐Free Bio‐photoelectrochemical Cells Based on a Water/Oxygen Circulation System with a Ni:FeOOH/BiVO₄ Photoanode

He Zhang, You Yu, Lingling Zhang, Shaojun Dong

Angewandte Chemie International Edition > 57 > 6 > 1547 - 1551

article

A Multicolor Chameleon DNA‐templated Silver Nanocluster and Its Application for Ratiometric Fluorescence Target Detection with Exponential Signal Response

Weijun Zhou, Jinbo Zhu, Daoqing Fan, Ye Teng, more

Advanced Functional Materials > 27 > 46 > n/a - n/a

For the first time, a novel type of chameleon DNA‐templated silver nanocluster (AgNC) is found whose fluorescence color can be switched among yellow, orange, and red by the regulation of complementary DNA, nonfluorescent assistant AgNC as well as Mg²⁺. AgNC templated by A₂₀‐C55 (A₂₀‐C55‐NC) possesses strong yellow fluorescence (Y signal) in phosphate buffer solution. When approaching to the nonfluorescent...

article

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

Qingqing Wang, Xueping Zhang, Liang Huang, Zhiquan Zhang, more

Angewandte Chemie International Edition > 56 > 50 > 16082 - 16085

We report a facile approach to prepare an artificial enzyme system for tandem catalysis. NiPd hollow nanoparticles and glucose oxidase (GOx) were simultaneously immobilized on the zeolitic imidazolate framework 8 (ZIF‐8) via a co‐precipitation method. The as‐prepared GOx@ZIF‐8(NiPd) nanoflower not only exhibited the peroxidase‐like activity of NiPd hollow nanoparticles but also maintained the enzymatic...

article

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

Qingqing Wang, Xueping Zhang, Liang Huang, Zhiquan Zhang, more

Angewandte Chemie > 129 > 50 > 16298 - 16301

article

RGO/Au NPs/N-doped CNTs supported on nickel foam as an anode for enzymatic biofuel cells

He Zhang, Lingling Zhang, Yujie Han, You Yu, more

Biosensors and Bioelectronics > 2017 > 97 > C > 34-40

In this study, three-dimensional reduced graphene oxide/Au NPs/nitrogen-doped carbon nanotubes (RGO/Au NPs/N-doped CNTs) assembly supported on nickel foam was utilized as an anode for enzymatic biofuel cells (EBFCs). 3D RGO/Au NPs was obtained by electrodepositing reduced graphene oxide on nickel foam (Ni foam), while Au NPs were co-deposited during the process. Afterwards, nitrogen doped CNTs (N-CNTs)...

article

New applications of genetically modified Pseudomonas aeruginosa for toxicity detection in water

Dengbin Yu, Yang-Chun Yong, Changyu Liu, Youxing Fang, more

Chemosphere > 2017 > 184 > C > 106-111

A novel mediator-free method based on genetically modified bacteria was developed for detecting water toxicity, where genetically modified Pseudomonas aeruginosa (GM P. aeruginosa) was selected as the biosensor strain and pyocyanin (PYO) produced by this strain was used as the indicator. The toxicity response of GM P. aeruginosa to 3, 5-dichlorophenol (3, 5-DCP) was measured electrochemically and...

article

One-step synthesis of functional pNR/rGO composite as a building block for enhanced ascorbic acid biosensing

Ling Liu, Junfeng Zhai, Chengzhou Zhu, Lei Han, more

Analytica Chimica Acta > 2017 > 981 > C > 34-40

An electrochemical sensor for ascorbic acid (AA) was prepared via an one-step electrochemical approach by reducing graphene oxide (rGO) and co-polymerizing neutral red (NR) and rGO to form a pNR/rGO hybrid film on the glassy carbon electrode (pNR/rGO-GCE). Structures and properties of the obtained pNR/rGO film were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Fourier...

article

Toxicity detection in water containing heavy metal ions with a self-powered microbial fuel cell-based biosensor

Dengbin Yu, Lu Bai, Junfeng Zhai, Yizhe Wang, more

Talanta > 2017 > 168 > C > 210-216

In this work, a self-powered microbial fuel cell (MFC)-based biosensor was developed for detecting toxicity in water containing heavy metal ions. Experimental conditions containing concentration of potassium ferricyanide, load resistor and glucose concentration were optimized. Six heavy metal ions (2mg/L, Cu²⁺, Hg²⁺, Zn²⁺, Cd²⁺, Pb²⁺ and Cr³⁺) were tested by this biosensor and the inhibition ratios...

article

Simple, fast, label-free, and nanoquencher-free system for operating multivalued DNA logic gates using polythymine templated CuNPs as signal reporters

Daoqing Fan, Erkang Wang, Shaojun Dong

Nano Research > 2017 > 10 > 8 > 2560-2569

Boolean logic devices play a key role in both traditional and nontraditional molecular logic circuits. This kind of binary logic, in which each bit is coded by (0, 1), has only two output states—on or off (or high/low). Because of the finite computing capacity and variation, it is facing challenges from multivalued logic gates while processing high-density or uncertain/imprecise information. However,...

article

Cascaded multiple amplification strategy for ultrasensitive detection of HIV/HCV virus DNA

Kun Wang, Daoqing Fan, Yaqing Liu, Shaojun Dong

Biosensors and Bioelectronics > 2017 > 87 > C > 116-121

Ultrasensitive detection of HIV and HCV virus DNA is of great importance for early accurate diagnostics and therapy of HIV virus-infected patients. Herein, to our best knowledge, it is the first to use DNA cascaded multiple amplification strategy for ultrasensitive detection of HIV virus DNA with G-quadruplex-specific fluorescent or colorimetric probes as signal carriers. The developed strategy also...

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INFONA - science communication portal

Search results for: Shaojun Dong

Nanozymes

Recent Advances on Nanozyme‐based Electrochemical Biosensors

Platinum‐Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis

Platinum‐Gold Alloy Catalyzes the Aerobic Oxidation of Formic Acid for Hydrogen Peroxide Synthesis

Self‐Indicative Gold Nanozyme for H₂O₂ and Glucose Sensing

Preparation, performance, and application of a stable, sensitive and cost-effective microelectrode array

Nanozyme: An emerging alternative to natural enzyme for biosensing and immunoassay

Prussian blue with intrinsic heme-like structure as peroxidase mimic

Novel dual fluorescence temperature-sensitive chameleon DNA-templated silver nanocluster pair for intracellular thermometry

Fuel‐Free Bio‐photoelectrochemical Cells Based on a Water/Oxygen Circulation System with a Ni:FeOOH/BiVO₄ Photoanode

Fuel‐Free Bio‐photoelectrochemical Cells Based on a Water/Oxygen Circulation System with a Ni:FeOOH/BiVO₄ Photoanode

A Multicolor Chameleon DNA‐templated Silver Nanocluster and Its Application for Ratiometric Fluorescence Target Detection with Exponential Signal Response

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

GOx@ZIF‐8(NiPd) Nanoflower: An Artificial Enzyme System for Tandem Catalysis

RGO/Au NPs/N-doped CNTs supported on nickel foam as an anode for enzymatic biofuel cells

New applications of genetically modified Pseudomonas aeruginosa for toxicity detection in water

One-step synthesis of functional pNR/rGO composite as a building block for enhanced ascorbic acid biosensing

Toxicity detection in water containing heavy metal ions with a self-powered microbial fuel cell-based biosensor

Simple, fast, label-free, and nanoquencher-free system for operating multivalued DNA logic gates using polythymine templated CuNPs as signal reporters

Cascaded multiple amplification strategy for ultrasensitive detection of HIV/HCV virus DNA

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