Colorimetric assay for the simultaneous detection of Hg2+ and Ag+ based on inhibiting the peroxidase-like activity of core–shell Au@Pt nanoparticles

2017 ◽  
Vol 9 (30) ◽  
pp. 4363-4370 ◽  
Author(s):  
Chi-Fang Peng ◽  
Ying-Ying Zhang ◽  
Li-Ying Wang ◽  
Zheng-Yu Jin ◽  
Guang Shao
Keyword(s):  
Colorimetric Assay ◽  
Simultaneous Detection ◽  
Pt Nanoparticles ◽  
Core Shell ◽  
Highly Sensitive

A highly sensitive and selective colorimetric assay for Hg2+ and Ag+ was developed using core–shell Au@Pt nanoparticles.

Self-assembly of Pd@Au core/shell nanosheets used as a highly sensitive SERS substrate based on the determination of trace fluorescent dye

2019 ◽  
Vol 110 (6) ◽  
pp. 563-569
Author(s):  
Tran Thi Bich Quyen ◽  
Huynh Thanh Hien ◽  
Truong Khai Hoan ◽  
Bui Le Anh Tuan ◽  
Nguyen Thi Tho
Keyword(s):  
Self Assembly ◽  
Fluorescent Dye ◽  
Core Shell ◽  
Sers Substrate ◽  
Highly Sensitive

Highly sensitive colorimetric detection of NH3 based on Au@Ag@AgCl core-shell nanoparticles

2021 ◽  
Author(s):  
Zhiwei Qiu ◽  
Yitong Xue ◽  
Jiyong Li ◽  
Yunzhi Zhang ◽  
Xinyi Liang ◽  
...  
Keyword(s):  
Colorimetric Detection ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Highly Sensitive ◽  
Core Shell Nanoparticles

scholarly journals A dual colorimetric probe for rapid environmental monitoring of Hg2+ and As3+ using gold nanoparticles functionalized with d-penicillamine

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5456-5465
Author(s):  
Su-Jin Yoon ◽  
Yun-Sik Nam ◽  
Yeonhee Lee ◽  
In Hwan Oh ◽  
Kang-Bong Lee
Keyword(s):  
Gold Nanoparticles ◽  
Environmental Monitoring ◽  
Colorimetric Assay ◽  
Colorimetric Probe ◽  
Highly Sensitive ◽  
Dual Detection

A highly sensitive and selective colorimetric assay for the dual detection of Hg2+ and As3+ using gold nanoparticles (AuNPs) conjugated with d-penicillamine (DPL) was developed.

scholarly journals Pt Nanoparticles Anchored on NH2-MIL-101 with Efficient Peroxidase-Like Activity for Colorimetric Detection of Dopamine

Chemosensors ◽  
2021 ◽  
Vol 9 (6) ◽  
pp. 140
Author(s):  
Jing Li ◽  
Keying Xu ◽  
Yang Chen ◽  
Jie Zhao ◽  
Peiyao Du ◽  
...  
Keyword(s):  
Active Sites ◽  
Clinical Medicine ◽  
Colorimetric Assay ◽  
Colorimetric Detection ◽  
Pt Nanoparticles ◽  
Robust Detection ◽  
Color Changes ◽  
Relevant Role ◽  
Metal Organic ◽  
The Central Nervous System

Dopamine (DA) is an important catecholamine neurotransmitter that plays a highly relevant role in regulating the central nervous system, and abnormal DA content can cause many immune-related diseases. Hence, it is of significance to sensitively and specifically identify DA for clinical medicine. In this work, Pt/NH2-MIL-101 hybrid nanozymes with bimetallic catalytic centers were fabricated by forming coordinate bonds between Pt nanoparticles (Pt NPs) and –NH2 on metal–organic frameworks (MOF). The catalytic activity of Pt/NH2-MIL-101 was increased by 1.5 times via enlarging the exposure of more active sites and improving the activity of the active sites through the strategy of forming bimetallic catalytic centers. In the presence of DA, competing with 3, 3′, 5, 5′-tetramethylbenzidine (TMB) for the generated hydroxyl radicals (•OH), the blue oxidation state TMB (Ox-TMB) is reduced to colorless TMB, showing dramatic color changes. The Pt/NH2-MIL-101-based colorimetric assay enables the sensitive and robust detection of DA molecules with a detection limit of only 0.42 μM and has an observable potential in clinical applications.

Highly sensitive electrochemical immunosensor for the simultaneous detection of multiple tumor markers for signal amplification

Talanta ◽  
2021 ◽  
Vol 226 ◽  
pp. 122133
Author(s):  
Na Wang ◽  
Jing Wang ◽  
Xiaoqing Zhao ◽  
Hou Chen ◽  
Hui Xu ◽  
...  
Keyword(s):  
Tumor Markers ◽  
Signal Amplification ◽  
Simultaneous Detection ◽  
Electrochemical Immunosensor ◽  
Multiple Tumor ◽  
Highly Sensitive

Highly sensitive multiplex lateral flow immunoassay of phytopathogens using Au@Pt nanoparticles as the colorimetric and catalytic label

2021 ◽  
Author(s):  
Vasily G. Panferov ◽  
Shyatesa C. Razo ◽  
Irina V. Safenkova ◽  
Anatoly V. Zherdev ◽  
Boris B. Dzantiev
Keyword(s):  
Pt Nanoparticles ◽  
Lateral Flow ◽  
Lateral Flow Immunoassay ◽  
Highly Sensitive
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