Nano-particles are useful in many cases. For example, we can use metal based (oxy-hydro) oxides as adsorbents to remove heavy metal ions, anions, organic dyes, humic substances and miscellaneous pollutants from wastewater.
Inorganic chemistry studies the structure of inorganic substances and their transformations. According to the logic of the response, nanoparticles should help analyze inorganic substances and synthesize (produce them).
1. New methods for the synthesis of inorganic substances in the form of nanoparticles.
2. New methods for the use of inorganic nanoparticles for the sustainable development of society.
3. New methods for analyzing inorganic substances using nanoparticles.
By volume the biggest nanoparticle systems (millions of tonnes/year) at present are carbon black (e.g. in tires) and fumed silica (e.g. in toothpastes). Both systems are used as rheological modifiers in the stated applications and both materials are inorganic.....
Well, if you are new to the field and need a general idea of the problem inorganic nanoparticles are trying to solve, their synthesis and applications, you may consider the following article.
Article Nanoparticles: Properties, Applications and Toxicities