AgCu@CuO Aerogels with Peroxidase-Like Activity and Photoelectric Response for Sensitive Biosensing

2021 ◽  
Author(s):  
Jinli Li ◽  
Yu Wu ◽  
Ying Qin ◽  
Mingwang Liu ◽  
Guojuan Chen ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Photoelectric Response ◽  
Enzymatic Biosensors ◽  
Poor Stability ◽  
Excellent Selectivity

Photoelectrochemical (PEC) enzymatic biosensors integrate the excellent selectivity of enzymes and high sensitivity of PEC bioanalysis, while the shortcomings of high cost, poor stability, as well as tedious immobilization of...

scholarly journals Electrochemistry/Photoelectrochemistry-Based Immunosensing and Aptasensing of Carcinoembryonic Antigen

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7742
Author(s):  
Jingjing Jiang ◽  
Jili Xia ◽  
Yang Zang ◽  
Guowang Diao
Keyword(s):  
Carcinoembryonic Antigen ◽  
Early Cancer ◽  
Low Cost ◽  
High Sensitivity ◽  
Advanced Materials ◽  
Current Trends ◽  
Signaling Strategies ◽  
Development Prospects ◽  
Screening And Diagnosis ◽  
Excellent Selectivity

Recently, electrochemistry- and photoelectrochemistry-based biosensors have been regarded as powerful tools for trace monitoring of carcinoembryonic antigen (CEA) due to the fact of their intrinsic advantages (e.g., high sensitivity, excellent selectivity, small background, and low cost), which play an important role in early cancer screening and diagnosis and benefit people’s increasing demands for medical and health services. Thus, this mini-review will introduce the current trends in electrochemical and photoelectrochemical biosensors for CEA assay and classify them into two main categories according to the interactions between target and biorecognition elements: immunosensors and aptasensors. Some recent illustrative examples are summarized for interested readers, accompanied by simple descriptions of the related signaling strategies, advanced materials, and detection modes. Finally, the development prospects and challenges of future electrochemical and photoelectrochemical biosensors are considered.

A visible and near-infrared dual-fluorescent probe for discrimination between Cys/Hcy and GSH and its application in bioimaging

2020 ◽  
Vol 8 (21) ◽  
pp. 5994-6003
Author(s):  
Ruixi Li ◽  
Habtamu Kassaye ◽  
Yanping Pan ◽  
Yuanzhi Shen ◽  
Weiqing Li ◽  
...  
Keyword(s):  
Fluorescent Probe ◽  
Near Infrared ◽  
Green Emission ◽  
High Sensitivity ◽  
Nir Emission ◽  
Excellent Selectivity

The probe Cy2 showed high sensitivity and excellent selectivity with a distinct fluorescence off-on response to GSH with NIR emission and Cys/Hcy with green emission, respectively.

A colorimetric nitrite detection system with excellent selectivity and high sensitivity based on Ag@Au nanoparticles

The Analyst ◽  
2015 ◽  
Vol 140 (4) ◽  
pp. 1076-1081 ◽  
Author(s):  
Tianhua Li ◽  
Yonglong Li ◽  
Yujie Zhang ◽  
Chen Dong ◽  
Zheyu Shen ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Color Change ◽  
Detection System ◽  
High Sensitivity ◽  
Nitrite Detection ◽  
Excellent Selectivity

NO2− could be directly detected with high sensitivity and excellent selectivity by visualizing the color change of a dispersion of Ag@AuNPs with the unaided eye.

Porous Eu2O3–In2O3 nanotube-based ethanol gas sensor with high sensitivity and excellent selectivity

2017 ◽  
Vol 123 (3) ◽  
Author(s):  
Hongwei Lian ◽  
Yi Feng ◽  
Zhijun Wang ◽  
Li Liu ◽  
Xuexin Guo ◽  
...  
Keyword(s):  
Gas Sensor ◽  
High Sensitivity ◽  
Excellent Selectivity

An Ultrasensitive Immunosensor for the Detection of Carcinoembryonic Antigens Utilizing a Nb-Doped Titanium Dioxide Nanocomposite Film

NANO ◽  
2015 ◽  
Vol 10 (04) ◽  
pp. 1550060 ◽  
Author(s):  
He Li ◽  
Junli Lu ◽  
Yu Wang ◽  
Fenyun Yi ◽  
Xindong Guo
Keyword(s):  
Titanium Dioxide ◽  
Influence Factors ◽  
High Sensitivity ◽  
Electrochemical Immunosensor ◽  
Optimal Conditions ◽  
Lower Detection Limit ◽  
Lower Detection ◽  
Electrochemical Signal ◽  
Doped Titanium Dioxide ◽  
Excellent Selectivity

An ultrasensitive electrochemical immunosensor based on Nb-doped titanium dioxide was developed for detection of carcinoembryonic antigen (CEA). The electrochemical signal enhancement was due to the synergistic effect by NbT and nanogold. The influence factors (pH, temperature and incubation time) were investigated in detail. Under optimal conditions, the immunosensor was able to detect the concentration of CEA in the range of 0.5 ng ⋅ mL-1 to 150 ng ⋅ mL-1, with a lower detection limit of 8.95 pg ⋅ mL-1. The proposed immunosensor showed high sensitivity, excellent selectivity and good stability.

The synergistic effect of Co/Ni in ultrathin metal–organic framework nanosheets for the prominent optimization of non-enzymatic electrochemical glucose detection

2020 ◽  
Vol 8 (5) ◽  
pp. 1008-1016 ◽  
Author(s):  
Haihan Zou ◽  
Dongyan Tian ◽  
Chao Lv ◽  
Songmei Wu ◽  
Guanxuan Lu ◽  
...  
Keyword(s):  
Detection Limit ◽  
Synergistic Effect ◽  
Electrode Material ◽  
Metal Organic Framework ◽  
High Sensitivity ◽  
Glucose Sensing ◽  
Glucose Detection ◽  
Metal Organic ◽  
Excellent Selectivity ◽  
Organic Framework

Co–Ni ultrathin metal organic framework nanosheets exhibited extremely high sensitivity, wide linear range, low detection limit and excellent selectivity as a glucose sensing electrode material.

Mitochondria-targeted colorimetric and fluorescent probes for hypochlorite and their applications for in vivo imaging

2014 ◽  
Vol 50 (63) ◽  
pp. 8640-8643 ◽  
Author(s):  
Ji-Ting Hou ◽  
Ming-Yu Wu ◽  
Kun Li ◽  
Jin Yang ◽  
Kang-Kang Yu ◽  
...  
Keyword(s):  
Response Time ◽  
Fluorescent Probes ◽  
In Vivo Imaging ◽  
High Sensitivity ◽  
Rapid Response ◽  
Excellent Selectivity

Two probes that exhibited high sensitivity and excellent selectivity toward ClO−among ROS with a rapid response time were presented, which could selectively detect ClO−in the mitochondria of the cells.

Colorimetric and fluorescent detection of hydrazine with high sensitivity and excellent selectivity

2018 ◽  
Vol 188 ◽  
pp. 208-212 ◽  
Author(s):  
Bingjie Shi ◽  
Sujie Qi ◽  
Mingming Yu ◽  
Chunxia Liu ◽  
Zhanxian Li ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Fluorescent Detection ◽  
Excellent Selectivity

Enhanced NOx Gas Sensing Performance Based on Indium-Doped Co(OH)2 Nanowire–Graphene Nanohybrids

NANO ◽  
2015 ◽  
Vol 10 (06) ◽  
pp. 1550079 ◽  
Author(s):  
Jiabao Song ◽  
Yufei Lin ◽  
Kan Kan ◽  
Jingchao Wang ◽  
Songying Liu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Specific Area ◽  
Charge Carrier Concentration ◽  
Mass Ratio ◽  
Indium Doping ◽  
Gas Sensing Properties ◽  
Thin Nanosheets ◽  
Excellent Selectivity

In this paper, the In ( OH )3/ Co ( OH )2/ rGO (ICG) nanohybrids have been synthesized via a simple reflux method. It was found that the nanostructures were actually composed of thin nanosheets or nanowires. The addition of indium in Co ( OH )2 on rGO results in increase in the specific area of nanohybrids (105.7m2g-1). That enhanced the gas sensing responses to NO x compared with Co ( OH )2/ rGO significantly. The ICG nanohybrids with the mass ratio of 5:1 (ICG-5) exhibited excellent gas-sensing properties with low detection limit of 0.97ppm and high sensitivity of 75.32% to 97ppm NO x at room temperature (RT). The gas sensor also showed excellent selectivity to NO x when other common gases such as NH 3, CO , C 2 H 2 and H 2 were present. The sensing mechanism could be attributed to the charge carrier concentration of Co ( OH )2 greatly increased by indium doping, which at last encourages the electron transfer during the interaction with gases.

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