This book presents the latest studies of metal oxide decorated nanophotocatalyst for pollutant removal from water bodies. Metal oxide-based nanophotocatalyst is currently considered an efficient material for pollutant removal as compared to other available materials due to its unique characteristics such as low cost, high regenerability, high photocatalytic degradation capacity, environmentally friendly and sustainability. This book elaborates on the basic synthetic route of the nanophotocatalyst to make it highly efficient such as; the presence of active sites, high mechanical strength, conductivity and thermal stability properties. These sustainable and efficient metal oxide-based nanophotocatalyst materials have significant environmental applications and can be applied in different fields. This material has the potential to clean up the different pollutants like volatile organic compounds, CO2 capture, organic and inorganic toxic pollutants, pesticides and colour compounds from the environment. This book gives a sound knowledge of metal oxide-based nanophotocatalyst to the audience regarding the modern design of photocatalytic degradation materials and manufacturing engineering with numerous example illustrations, methods and results for graduate students, researchers and industrialists. Readers will have a quick reference by exploring the research literature on the subject with commercial value-added research applications of metal oxide-based nanophotocatalyst materials.