This volume of the "Journal of Nano Research" contains peer-reviewed papers that announce the research results in the area of applied and functional nanomaterials and recent nanotechnologies: heterostructures nanorods for photocatalytic degradation of dyes and pathogens in the water and wastewater; magnetic nitrogen-doped catalysts for efficient activation of peroxymonosulfate for degradation of organic pollutants; nanocomposite foams for remediation of congo red dye; researching of electron transport behaviour in InSb semiconductor; analysis of the hydrophilic self-cleaning and ultraviolet-shielding coatings for industrial and home applications, etc. The collected articles will be helpful to many specialists from various industrial branches whose activity is related to nanomaterials and nanotechnologies.