CURRENT AFFAIRS

2018

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Researchers developed a patchwork of mesh-like pieces called a Metal-Organic Framework (MOF). What is the MOF?
A
A spacesuit for bacteria
B
A protein tablet for the space travellers
C
Antibiotic agent to cure arthritis
D
A framework that can regenerate human organs
Explanation: 

Detailed explanation-1: -Metal–organic frameworks (MOFs) are a class of compounds consisting of metal ions or clusters coordinated to organic ligands to form one-, two-, or three-dimensional structures. The organic ligands included are sometimes referred to as “struts” or “linkers", one example being 1, 4-benzenedicarboxylic acid (BDC).

Detailed explanation-2: -Metal Organic Frameworks (MOFs) are crystalline porous solids composed of a three-dimensional (3D) network of metal ions held in place by multidentate organic molecules [1, 2]. From: Studies in Surface Science and Catalysis, 2010.

Detailed explanation-3: -MOFs and MOF composites are mainly used for gas storage and separation, removal/separation of hazardous chemicals, heterogeneous catalysis, photocatalysis, sensing, drug delivery, biosensing, and some medical applications.

Detailed explanation-4: -For example MOF-5, UiO-66, and UiO-67 have charge neutral, porous 3D framework structures that are comprised of ZnII(benzene-1, 4-dicarboxylate), ZrIV(benzene-1, 4-dicarboxylate), and ZrIV(4, 4′-dicarboxy1, 1′-biphenyl) units, respectively.

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