Question

Which of the following techniques is used to measure the chemical composition of the nanomaterials?

• A. Raman spectroscopy
• B. X-ray diffraction
• C. Energy Dispersive Spectroscopy
• D. UV – VIS spectroscopy

Hint:

Energy Dispersive Spectroscopy (EDS) is essential for analyzing nanomaterials' chemical composition, especially when used in conjunction with Scanning Electron Microscopy (SEM) to provide both structural and compositional insights.

Answer 1

The Correct Option is C

To measure the chemical composition of nanomaterials, Energy Dispersive Spectroscopy (EDS) is the most commonly used technique. EDS works by detecting the X-rays emitted from a sample when it is bombarded with electrons, which allows for the identification of elements present in the sample. This technique is often coupled with Scanning Electron Microscopy (SEM) to provide detailed spatial information along with the elemental composition. EDS provides a rapid and effective way of analyzing the elemental makeup of nanomaterials, making it particularly useful for research in nanotechnology.
Other techniques mentioned, such as Raman spectroscopy, are used to study vibrational modes and molecular structures but do not directly measure the elemental composition. Similarly, X-ray diffraction (XRD) is used primarily to study the crystal structure of materials, not their chemical composition. UV-VIS spectroscopy is mainly used for analyzing the interaction of light with materials and is not typically used for determining elemental composition.
Thus, the correct answer is Energy Dispersive Spectroscopy. This technique is invaluable in characterizing nanomaterials by providing information about the elements in the material.