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Carbonaceous Nanofibers for Environmental Remediation--A Review of Mechanistic Insights and Performance Optimization
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This review examines carbonaceous nanofibers — materials derived from various polymer precursors — as a potential platform for removing pollutants including microplastics, toxic metals, dyes, and gases from the environment. The authors find that surface chemistry and nanofiber architecture matter more than simple surface area when it comes to performance, but inconsistent testing methods across studies make direct comparisons difficult. The work identifies key hurdles like poor selectivity and durability that must be overcome before these materials could be deployed at scale for real-world pollution cleanup.
Environmental contamination by gaseous emissions, toxic metals, organic pollutants, and emerging contaminants continues to challenge both natural and engineered systems, while conventional remediation technologies often suffer from limited selectivity, high energy demand, or poor durability. This review critically evaluates carbonaceous nanofibers (CNFs) as a versatile material platform for environmental remediation, with the objective of clarifying how precursor chemistry, nanofiber architecture, and surface functionalization govern remediation performance across pollutant classes. A systematic analysis of recent peer-reviewed literature was conducted to compare CNFs derived from polyacrylonitrile, cellulose, polyethyleneimine, polyimide, and related precursors in removing gaseous pollutants (CO₂, SO₂, NOx), organic contaminants (dyes, antibiotics, volatile organic compounds), toxic metals and metalloids (Cr, Cu, As, U), and microplastics. Comparative evaluation reveals pronounced performance heterogeneity driven by solid–gas and solid–liquid interfacial mechanisms, where surface functional groups, environmental conditions, and matrix complexity often exert greater influence than intrinsic surface area alone. Cross-study analysis further indicates that adsorption kinetics, stability, and regeneration behavior vary widely due to differences in material design and testing conditions, limiting direct comparability and practical predictability. These findings highlight key barriers to real-world deployment, including insufficient selectivity, performance decay, and scalability constraints. By integrating structure–property–performance relationships with practical considerations such as durability, cost-effectiveness, and sustainability, this review provides a framework for the rational design and application of CNF-based technologies for environmental pollution control.
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This PhD thesis covers the development of carbon nanofiber membranes from lignin — a renewable wood by-product — and includes a chapter demonstrating their ability to filter micro- and nanoplastics, dyes, and antibiotics from water. It is relevant to microplastics primarily as a remediation technology study rather than an exposure or toxicology study.
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This review evaluates innovative materials being developed to remove microplastics and nanoplastics from polluted water, including carbon-based, metal, polymer, and mineral adsorbents. Researchers compared the effectiveness, advantages, and limitations of each type, finding that adsorption-based approaches show strong promise. The study highlights remaining challenges such as scaling these technologies for real-world water treatment applications.
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Scientists reviewed how carbon-based materials like graphene, activated carbon, and carbon nanotubes can be used to remove micro- and nanoplastics from water. Researchers found that these adsorbents show strong potential for capturing tiny plastic particles thanks to their tunable surface properties and high surface area. The study suggests that carbon-based filtration could become an important technology for cleaning microplastic-contaminated water.
Evaluating the effectiveness of adsorption nano-techniques for microplastic removal: Insights and future prospects
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This review evaluates the effectiveness of various adsorbent materials, including activated carbon, bioadsorbents, and advanced nanomaterials, for removing microplastics and nanoplastics from water. Researchers examined key factors like pore size, surface charge, and environmental conditions that influence removal efficiency. The study highlights the need for developing more sustainable and cost-effective adsorbent materials to tackle growing microplastic contamination in water sources.
Advanced nanocomposites for microplastic remediation: a critical review of materials, mechanisms, and scalability challenges.
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This review pulls together recent research on special engineered materials (called nanocomposites) designed to filter or break down microplastics in water and the environment—some claim to remove over 99% of microplastics. However, the researchers caution that these impressive numbers come from inconsistent testing methods, meaning we can't yet be sure how well these technologies would actually work in real rivers, oceans, or drinking water systems. This matters because microplastics are increasingly found in our food and water, and knowing which cleanup methods truly work is key to protecting public health—but more standardized, real-world testing is needed before these solutions are ready for widespread use.
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