Chen, et al (2024) A universal synthesis strategy for facile and scalable of magnetic biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More composite materials for PMS activation: catalytic mechanisms. Journal of Alloys and Compounds. https://doi.org/10.1016/j.jallcom.2024.174313

In recent advancements, researchers have developed a green and versatile pyrolysisPyrolysis is a thermochemical process that converts waste biomass into bio-char, bio-oil, and pyro-gas. It offers significant advantages in waste valorization, turning low-value materials into economically valuable resources. Its versatility allows for tailored products based on operational conditions, presenting itself as a cost-effective and efficient More strategy for synthesizing magnetic biochar composites as catalysts for Advanced Oxidation Processes (AOPs), aimed at enhancing wastewater treatment technologies. This innovative approach, characterized by its non-selectivity towards biomassBiomass is a complex biological organic or non-organic solid product derived from living or recently living organism and available naturally. Various types of wastes such as animal manure, waste paper, sludge and many industrial wastes are also treated as biomass because like natural biomass these More species, leverages iron (Fe) nanoparticles as activation centers to promote the formation of nitrogen-doped carbon nanotubes (CNTs) during the annealing process. The pivotal role of surface-bound free radicals in this method underscores its efficacy, particularly in the rapid removal of sulfadiazine (SDZ), achieving over 90% efficiency within just 20 minutes across various biomass sources including duckweed, shrimp shell, peanut shell, corncob, and pomelo peel.The encapsulation of Fe nanoparticles within the nitrogen-doped CNTs, facilitated by the decomposition of melamine and biomass, not only circumvents the limitation of specific biomass requirements but also enhances catalytic performance through the formation of a specialized structure. This structure is further optimized by the migration of graphene sheets and carbon nanoparticles to the nucleus surface, resulting in a hollow CNT configuration.Furthermore, experimental findings, through quenching experiments and Electron Spin Resonance (ESR) tests, have elucidated the accumulation of surface-bound radicals on the CNTs surface, significantly contributing to the efficient SDZ removal. This synthesis strategy introduces a universal method for creating biochar-based catalysts, highlighting the relationship between biomass feedstockFeedstock refers to the raw organic material used to produce biochar. This can include a wide range of materials, such as wood chips, agricultural residues, and animal manure. More and catalytic properties, and offering a new pathway for environmental remediation through the utilization of waste resources. The approach not only simplifies the preparation process of biochar-based catalysts but also addresses performance variability, thereby presenting a significant step forward in the application of AOPs for pollutant degradation.