Metal-Organic Framework MIL-53(Fe): Synthesis, Electrochemical Characterization, and Application in Development of a Novel and Sensitive Electrochemical Sensor for Detection of Cadmium Ions in Aqueous Solutions

A metal-organic framework MIL-53(Fe) was successfully synthesized by a simple hydrothermal method. A synthesized MIL-53(Fe) sample was characterized, and results indicated that the formed MIL-53(Fe) was a single phase with small particle size of 0.8 μm and homogeneous particle size distribution was obtained. The synthesized MIL-53(Fe) has been used to modify a glassy carbon electrode (GCE) by a drop-casting technique. Cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) measurements of the MIL-53(Fe)-modified GCE showed that the MIL-53(Fe) was successfully immobilized onto the GCE electrode surface and the electrochemical behavior of the GCE/MIL-53(Fe) electrode was stable. In addition, several electrochemical parameters of MIL-53(Fe)-modified GCE (GCE/MIL-53(Fe)) including the heterogeneous standard rate constant ( k 0 ) and the electrochemically effective surface area ( A ) were calculated. Obtained results demonstrated that the synthesized MIL-53(Fe) with the small particle size, highly homogeneous particle size, and high electrochemically effective surface area was able to significantly enhance the electrochemical response signal of the working electrode. Therefore, the GCE/MIL-53(Fe) electrode has been used as a highly sensitive electrochemical sensor for cadmium ion (Cd(II)) monitoring in aqueous solution using differential pulse voltammetry (DPV) technique. The response signal of the electrochemical sensor increased linearly in the Cd(II) ion concentration range from 150 nM to 450 nM with the limit of detection (LOD) of 16 nM.

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Facile synthesis and supercapacitive properties of Zr-metal organic frameworks (UiO-66)

RSC Advances ◽

10.1039/c4ra11896k ◽

2015 ◽

Vol 5 (23) ◽

pp. 17601-17605 ◽

Cited By ~ 52

Author(s):

Yueyue Tan ◽

Wei Zhang ◽

Yilong Gao ◽

Jianxiang Wu ◽

Bohejin Tang

Keyword(s):

Particle Size ◽

Small Particle ◽

Metal Organic Frameworks ◽

Synthetic Method ◽

Small Particle Size ◽

Facile Synthesis ◽

Supercapacitive Performance ◽

Metal Organic

A facile synthetic method was developed to prepare Zr-MOFs. Pseudocapacitor behavior in KOH electrolyte. Zr-MOF1 with small particle size exhibited higher supercapacitive performance.

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Metal–organic framework derived carbon-confined Ni2P nanocrystals supported on graphene for an efficient oxygen evolution reaction

Chemical Communications ◽

10.1039/c7cc03558f ◽

2017 ◽

Vol 53 (59) ◽

pp. 8372-8375 ◽

Cited By ~ 117

Author(s):

Manman Wang ◽

Mengting Lin ◽

Jiantao Li ◽

Lei Huang ◽

Zechao Zhuang ◽

...

Keyword(s):

Charge Transport ◽

Surface Area ◽

Oxygen Evolution ◽

Oxygen Evolution Reaction ◽

Active Sites ◽

Metal Organic Framework ◽

Effective Surface Area ◽

Effective Surface ◽

Metal Organic ◽

Organic Framework

Metal–organic framework derived carbon-confined Ni2P nanocrystals supported on graphene with high effective surface area, more exposed active sites, and enhanced charge transport were successfully designed.

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Faculty Opinions recommendation of A small particle size diet reduces upper gastrointestinal symptoms in patients with diabetic gastroparesis: a randomized controlled trial.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.718234590.793489907 ◽

2014 ◽

Author(s):

Klaus Bielefeldt

Keyword(s):

Particle Size ◽

Randomized Controlled Trial ◽

Small Particle ◽

Controlled Trial ◽

Gastrointestinal Symptoms ◽

Diabetic Gastroparesis ◽

Small Particle Size ◽

Randomized Controlled ◽

Upper Gastrointestinal Symptoms ◽

Upper Gastrointestinal

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Dose schedule of Rasa Aushadhis

Journal of Ayurveda and Integrated Medical Sciences (JAIMS) ◽

10.21760/jaims.v1i2.3673 ◽

2016 ◽

Vol 1 (2) ◽

Author(s):

Dr. Jambla Neha ◽

Saroch Vikas ◽

Johar Smita

Keyword(s):

Particle Size ◽

Oral Mucosa ◽

Small Particle ◽

Dose Schedule ◽

The Body ◽

Small Particle Size ◽

Inherent Property ◽

Ayurvedic Drugs ◽

Modern Era

Rasashastra deals with the Rasa Aushadhis, the drugs of metallic and mineral origin. Mercury is used in most of the Rasaaushadhis. The toxicity of Mineral and metallic preparations are reduced to such an extent by various procedures of Shodhana, Marana etc. that Mercury converts its inherent property of toxicity into medicinal property. Rasa Aushadhis works quickly on the body because due to their small particle size, their absorption starts from the oral mucosa itself. The action of drugs depends largely upon the Anupana i.e. the vehicle for the drug. Rasacharayas have mentioned various Rasa preparations like Bhasmas, Parpati, Pottali, Manduras, Karpooras etc. along with their doses, dose schedule and Anupana / Sahapana etc. The principles of Rasaaushadhis when correlated in modern era are found to be scientifically accurate. We may say that Rasacharyas had already mastered the science of nanotechnology, purification, action of metabolic catalysts, biotransformation and preservation of medicines. The Ayurvedic drugs can be harmful for our body when not administered in proper dosage as per mentioned in classic literatures.

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