We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Compact Disc-Derived Nanocarbon-Supported Catalysts with Extreme Catalytic Activity
AI summary Read the abstract
Scientists engineered nanocarbon-metal hybrid catalysts from recycled compact discs, producing silver nanocatalysts with controllable electronic and optical properties that demonstrated extreme catalytic activity for environmental and energy applications at reduced cost.
Advanced carbon-metal hybrid materials with controllable electronic and optical properties, as well as chemical reactivities, have attracted significant attention for emerging applications, including energy conversion and storage, catalysis and environmental protection. However, the commercialization of these materials is hampered by several vital problems, including energy-intensive synthesis and expensive chemicals, and inefficient control of their structures and properties. Herein, we report the simple and controllable engineering of nanocarbon-metal self-assembled silver nanocatalysts (SSNs) derived from polycarbonate (PC)-based optical discs using microplasmas under ambient conditions. The plasma-engineered catalysts exhibited controlled properties including surface functionalities, hydrophilicities, Ag+/Ag0 metallic states, and Ag loading. The synthesized catalysts leverage localized surface plasmon resonance (LSPR) properties, enabling enhanced catalytic activity for the rapid reduction of carcinogenic 4-nitrophenol (4-NP) to the valuable pharmaceutical intermediate 4-aminophenol (4-AP), achieving a high reaction rate constant of 0.2 ± 0.0 s-1 and completing the reduction in just 30 s. Demonstrating robust performance, the SSNs maintained up to 90% conversion efficiency after ten recycling cycles, underscoring their stability and reusability. This work not only presents an effective approach to upcycling optical disc waste, but also highlights the potential of plasma-engineered nanocatalysts in environmental remediation, offering a low-energy solution for high-efficiency pollutant reduction.
More Papers Like This
Synthesis of nano-carbons from different waste plastics and diverse catalysts
AI summary Read the abstract
Researchers investigated synthesizing useful carbon nanomaterials from waste plastic feedstocks, converting polymer trash into high-value nano-carbons that could be used in industrial applications. The approach addresses plastic waste while simultaneously creating economically valuable materials.
Efficiency of Hybrid Materials for Photocatalytic Degradation of Micro‐ and Nano‐Plastics
AI summary Read the abstract
Researchers reviewed how hybrid materials — combinations of multiple substances engineered at the nanoscale — can serve as highly effective photocatalysts to break down microplastics and nanoplastics using light energy. These multi-functional materials improve electron separation and reaction efficiency compared to single-component catalysts, representing a promising technological pathway for removing persistent plastic particles from the environment.
Catalytic transformation of microplastics to functional carbon for catalytic peroxymonosulfate activation: Conversion mechanism and defect of scavenging
AI summary Read the abstract
Researchers developed a method to convert high-density polyethylene plastic waste into functional carbon materials that can activate peroxymonosulfate to break down organic pollutants in water. Using a salt template-based approach with nickel chloride, they produced carbon nanosheets with high catalytic efficiency. The study demonstrates a promising approach for upcycling plastic waste into useful water purification catalysts.
A decadal review of carbon-based sustainable materials: chemistry, mechanisms, and environmental applications
AI summary Read the abstract
This comprehensive review examines biochar — a charcoal-like material made from organic waste — as a promising tool for removing microplastics, heavy metals, and other pollutants from water through its high surface area and porous structure. Finding sustainable ways to capture microplastics before they reach ecosystems and bodies is an urgent global need, and biochar represents a low-cost, renewable option.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.