We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Biodegradable CA-based nanofiber membranes with ZnO/SnO2 heterojunctions for efficient emulsion separation and photocatalytic self-cleaning
AI summary Read the abstract
Researchers created a biodegradable fiber membrane, made from treated cellulose and metal oxide coatings, that separates oil from water with high efficiency and can self-clean under UV light. In lab tests, the membrane broke down into small fragments when exposed to an enzyme solution, suggesting it would not leave behind long-lasting microplastic waste after disposal.
Organic pollutant-induced membrane failure and microplastic accumulation derived from discarded spent membranes pose severe obstacles to the sustainable development of oil/water (O/W) separation membrane technology. In this study, a self-cleaning and biodegradable deacetylated cellulose acetate nanofiber membrane modified with ZnO/SnO 2 heterojunctions (d-CA@ZnO/SnO 2 ) was fabricated by electrospinning and deacetylation process. Simultaneous stripping removal of acetyl groups and polyvinylpyrrolidone fillers effectively enhanced the surface roughness of the membrane, which greatly improved its hydrophilicity and underwater oleophobicity. Benefiting from such favorable surface properties, the d-CA@ZnO/SnO 2 membrane exhibited outstanding separation performance for various O/W emulsions, resulting in the higher permeation flux (∼ 972.25 L·m −2 ·h −1 ) and separation efficiency (∼ 98.2%). Due to the staggered band alignment of ZnO/SnO 2 heterostructures, the charge carrier recombination was prominently suppressed, which allowed the membrane to achieve an exceptional photocatalytic self-cleaning efficiency with a flux recovery rate exceeding 95% via ultraviolet-driven active photodegradation of organic foulants. Meanwhile, enzymatic degradation tests confirmed that the discarded membrane could be disintegrated into fine fragments within cellulase solutions, which presented a practical and eco-friendly approach for oily wastewater purification without causing secondary microplastic pollution.
More Papers Like This
Sustainable Design of Bio-Composite Membranes for Dual Contaminant Separation and Environmental Remediation
AI summary Read the abstract
This study developed a cellulose acetate composite membrane capable of simultaneously removing both microplastics/nanoplastics and oil contaminants from water using an environmentally benign fabrication process, offering a multifunctional alternative to conventional single-target treatment systems.
Nanocellulose-based packaging materials: Unlocking a sustainable path beyond microplastics
AI summary Read the abstract
Researchers review nanocellulose extracted from plant biomass as a sustainable packaging alternative to petroleum-based plastics, examining how its mechanical strength, tunable surface chemistry, and barrier properties can replace synthetic films and coatings while offering biodegradability and recyclability to reduce microplastic pollution from packaging waste.
Cellulose nanofiber-based electrode as a component of an enzyme-catalyzed biofuel cell
AI summary Read the abstract
Researchers developed a flexible, biodegradable biofuel cell using cellulose nanofiber electrodes as a plastic-free alternative for wearable sensors. The device performed comparably to plastic-based equivalents and is readily disposable like paper, offering a path toward reducing microplastic contamination from disposable electronic devices.
Fabrication of a photocatalytic self-cleaning all-inorganic membrane by depositing GO/TiO2 nanocomposite active layer on alumina substrate for sustainable separation of emulsified oil from water
AI summary Read the abstract
Scientists have created a new water filter made entirely from non-plastic materials (ceramic and light-activated coatings) that can clean oily wastewater without breaking down into microplastic pollution—a concerning side effect of some plastic-based filters used today. The filter also "self-cleans" using light exposure to break down trapped oil, allowing it to be reused repeatedly while still removing about 99% of oil from water. This matters because it points toward more sustainable water treatment options that avoid adding more microplastics to our environment and water supply.
Superhydrophilic adsorptive nanofiber membranes for ultrafast and highly-efficient waterborne nanoplastic removal
AI summary Read the abstract
Researchers engineered a superhydrophilic nanofiber membrane by cross-linking polyethylene oxide into a polylactic acid polymer network, achieving greater than 99.99% separation efficiency for nanoplastics larger than 150 nm through combined hydrophobic and pi-pi molecular interactions, with water permeance 53 times higher than conventional membranes under gravity-driven flow.
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.