The nanotechnology has direct novel opportunities for enlargement of wastewater treatment from their applications. The discharged effluents or liquid containing uninvited chemicals (dyes, toxic organic compounds, etc.) by various sectors. Nano-particles are exhibiting well-suited electronic structure desirable for photocatalytic applications and efficiently degraded the toxic chemicals in wastewater and releases the nonhazardous byproducts. Nanomaterials are also showed to be a promising source and sustainable substances as thermal barrier for turbines by achieved by different coating techniques. Thermal barrier coating provides thermal protection for metallic surfaces of turbine such as power generations, automobiles transportation and aircraft operating at high temperatures.