Carbon Quantum Dot Surface-Chemistry-Dependent Ag Release Governs the High Antibacterial Activity of Ag-Metal–Organic Framework Composites

2018 ◽  
Vol 1 (3) ◽  
pp. 693-707 ◽  
Author(s):  
Nikolina A. Travlou ◽  
Manuel Algarra ◽  
Cristina Alcoholado ◽  
Manuel Cifuentes-Rueda ◽  
Alejandro M. Labella ◽  
...  
2018 ◽  
Vol 47 (14) ◽  
pp. 4847-4855 ◽  
Author(s):  
Sheta M. Sheta ◽  
Said M. El-Sheikh ◽  
Mohkles M. Abd-Elzaher

Novel Cu-MOF-NPs (C1) were successfully synthesized and used as biosensors for T3 hormone and showed high antibacterial activity against various pathogens.


2019 ◽  
Vol 9 (22) ◽  
pp. 4952 ◽  
Author(s):  
Sushma Rani ◽  
Bharti Sharma ◽  
Shivani Kapoor ◽  
Rajesh Malhotra ◽  
Rajender S. Varma ◽  
...  

In the present study, we report a highly effective electrochemical sensor for detecting 2,4-dinitrotoluene (2,4-DNT). The amperometric determination of 2,4-DNT was carried out using a gold electrode modified with zinc–metal organic framework-8 and silver quantum dot (Zn-MOF-8@AgQDs) composite. The synthesized nanomaterials were characterized by using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). The synthesized nanocomposite proved to be efficient in electro-catalysis thereby reducing the 2,4-DNT. The unique combination present in Zn-MOF-8@AgQDs composite offered an excellent conductivity and large surface area enabling the fabrication of a highly sensitive (−0.238 µA µM−1 cm−2), selective, rapid and stable 2,4-DNT sensor. The dynamic linear range and limit of detection (LOD) was about 0.0002 µM to 0.9 µM and 0.041 µM, respectively. A 2,4-DNT reduction was also observed during the linear sweep voltammetry (LSV) experiments with reduction peaks at −0.49 V and −0.68 V. This is an unprecedented report with metal organic framework (MOF) composite for sensing 2,4-DNT. In addition, the presence of other species such as thiourea, urea, ammonia, glucose, and ascorbic acid displayed no interference in the modified electrode suggesting its practicability in various environmental applications.


ACS Omega ◽  
2017 ◽  
Vol 2 (3) ◽  
pp. 1249-1258 ◽  
Author(s):  
Zhengfang Tian ◽  
Xianxian Yao ◽  
Kexin Ma ◽  
Xingxing Niu ◽  
Julia Grothe ◽  
...  

2018 ◽  
Vol 6 (5) ◽  
pp. 2129-2138 ◽  
Author(s):  
Yan Li ◽  
Leilei Zhao ◽  
Zhonglin Du ◽  
Jun Du ◽  
Wei Wang ◽  
...  

Homogeneously Co,N-bidoped porous carbons derived from MOFs are first applied as novel electrocatalysts for QDSCs, and an unexpected PCE of 9.12% has been observed with Zn–Cu–In–Se QDs as sensitizers.


2014 ◽  
Vol 136 (42) ◽  
pp. 14845-14851 ◽  
Author(s):  
Subhadeep Saha ◽  
Gobinda Das ◽  
Jayshri Thote ◽  
Rahul Banerjee

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