Waste-Derived Nanomaterials: Innovations for Sustainable Environmental Remediation

Nanotechnology offers advanced solutions to pressing environmental challenges like pollutant removal, climate change mitigation, and green energy generation. Nanomaterials are widely reported for wastewater remediation through adsorption, catalytic degradation, and functionalized membrane separation of water pollutants. They also play a pivotal role in capturing and catalytically transforming CO2 into valuable compounds, supporting green H2 generation and photovoltaic performance. However, their costly and toxic synthesis approach limits their large-scale application. Use of low-cost raw materials and facile synthesis methods are promising ways to overcome this barrier. Agriculture and industrial waste (freely and abundantly available), are successfully converted into carbon and metal nanomaterials, reducing their synthesis cost, promoting circular economy principles. Also, it deals with the growing accumulation of industrial, agricultural, and municipal waste. This waste-to-nanomaterial approach transforms liabilities into assets, focusing on multiple targets from a single arrow, providing pathways to address pollution, clean energy technologies, resource conservation, and global sustainable development goals.The primary goal of this Research Topic is to address multiple environmental challenges of waste accumulation, increasing levels of pollution in natural ecosystems, and energy crisis, by promoting the development and application of waste-derived nanomaterials for sustainable environmental remediation. The Topic will evaluate the potential of waste as a resource for preparing advanced nanomaterials, targeting minimizing cost and maximizing the production of nanomaterials. This collection aims to gather recent studies for the synthesis of waste-derived advanced nanomaterials, and it will include all the categories of nanomaterials, including carbon nanomaterials like CNTs, graphene, graphitic carbon nitride, nano-biochar, biopolymer nanoparticles, zerovalent metal nanoparticles, metal oxide nanoparticles, heterojunctions, metal nanocomposites, organometallic nanomaterials, and MOFs. The application of these nanomaterials is supposed to be focused on the betterment of the environment, either by environmental pollution abatement or by clean energy production and climate change mitigation. The article collection aims to encourage research on converting diverse waste streams, such as agricultural residues, industrial by-products, municipal waste, and biomass into functional nanomaterials with high efficiency in pollutant removal and environmental restoration. It also promotes interdisciplinary approaches integrating green chemistry, materials science, biotechnology, and environmental engineering.The collection welcomes Original Research articles, Review articles, Mini Reviews, and Perspectives. It welcomes all the recent and advanced waste-derived nanomaterials, aiming for sustainable environmental remediation and future technologies related to the environment. Contributors are encouraged to address emerging innovations in the adsorption, catalytic degradation, filtration and sensing, of emerging pollutants like microplastics, PFAS, pharmaceutical and personal care pollutants, bisphenol, triazines, and PAHs, in water, air, and soil. Authors are also encouraged for cycle assessment, toxicity, scalability, and techno-economic feasibility of waste-derived nanomaterials. The major themes which will be covered in this Topic are:• Agriculture or municipal solid waste-derived, carbon-based nanomaterials• Green synthesis of metal nanoparticles and nanocomposites using plant extract• Industrial waste and e-waste-derived carbon or metal nanomaterials• Application of the above synthesized nanomaterials for water and soil remediation, air pollution control, pollutant sensing, CO2 mitigation, H2 generation or photovoltaic application Topic editors: Shiv Shankar, Avinash Kumar Srivastava, Dr. Alpa Yadav, Dr. Deepti Goyal, Shalu Rawat Source: https://www.frontiersin.org/research-topics/82235/waste-derived-nanomaterials-innovations-for-sustainable-environmental-remediation