Membranes

Zentek has announced the signing of a collaboration agreement (effective April 11, 2025) with Filtration Solutions Industrial Co. (“FSCO”), a leading Saudi-based manufacturer and distributor of air filtration products, to manufacture and distribute ZenGUARD™ Enhanced Air Filters across the Gulf Cooperation Council (“GCC”) region.

Under the terms of the agreement, Zentek will supply FSCO with HVAC filter media coated with its proprietary graphene-silver-based ZenGUARD™ technology — known for its ability to significantly increase viral filtration efficiency. FSCO will produce ZenGUARD™ Enhanced Air Filters that will be marketed and distributed under Zentek’s branding throughout the GCC, including Saudi Arabia, the United Arab Emirates, Kuwait, Qatar, Bahrain, and Oman, with the net revenue generated from sales of the products shared between Zentek and FSCO. The term of the agreement is for three years, with additional renewal options.

A team of researchers at École Polytechnique Fédérale de Lausanne (EPFL) recently developed a scalable technique to create porous graphene membranes that selectively filter CO₂ from gas mixtures. Their approach is said to reduce production costs while improving membrane quality and performance, paving the way for real-world applications in carbon capture and beyond.

Image from: Nature Chemical Engineering

Graphene membranes are excellent at separating gases because they can be engineered with pores just the right size to let CO₂ through while blocking larger molecules like nitrogen. This makes them ideal for capturing CO₂ emissions from power plants and industrial processes. But there’s a catch: manufacturing these membranes at a meaningful scale has been difficult and costly.

Researchers from Monash University and The Pennsylvania State University, In collaboration with NematiQ, a wholly owned subsidiary of Clean TeQ Water, have developed a novel water filtration membrane that effectively removes small PFAS molecules (a group of man-made chemicals known for their persistence and resistance to breakdown), overcoming a significant challenge faced by conventional water filters.

PFAS cycle. Image credit: Clean TeQ Water

The team designed a beta-cyclodextrin (βCD) modified graphene oxide (GO-βCD) membrane with nanoscale channels that selectively retain PFAS while allowing water to pass through.

The Garland Company, Inc., a Garland Industries company manufacturing and distributing high-performance solutions for the commercial building envelope based in Cleveland, Ohio, has announced the newest addition to its StressPly family of modified bitumen roofing membranes: StressPlyⓇ Max. This patent pending membrane is formulated for maximum strength, superior fire resistance, and exceptional weathering.

The StressPly Max membrane features a dual polyester and fiberglass reinforcement, delivering a high-tensile value further enhanced by a graphene modified bitumen. The incorporation of graphene into the asphaltic compound provides superior strength, with an internal reinforcement exceeding one thousand pounds. 

SCALE Nanotech, an advanced R&D company based in Estonia, has announced the launch of its spinout Dragon Elements in Spain, aiming to enter into the XR and wearable electronics sector. Dragon Elements is set to commercialize LATIDO® capsules, a graphene-based technology designed to "redefine human interaction with hardware by eliminating the need for traditional audio and video components", as per the Company.

LATIDO® aims to mark a "radical shift in audiovisual hardware". Unlike conventional technology that requires separate components for sound and vision, LATIDO® harnesses millions of graphene membranes to seamlessly control both light and sound within a single monolithic device, removing the need for separate screens or speakers.

Würzburg University researchers have created a defect in graphene that allows ions to pass through, which could lead to new applications in water filtration or sensor technology.

The Würzburg model system consisting of two nanographene layers that can absorb and bind chloride ions (green) through a defect in the crystal lattice. (Image: Kazutaka Shoyama / Universität Würzburg)

Defects that allow scientists to control the permeability of graphene for different substances can be very useful: ‘So-called defects can be created in the carbon lattice of graphene. These can be thought of as small holes that make the lattice permeable to gases,’ says chemistry professor Frank Würthner from Julius-Maximilians-Universität (JMU) Würzburg in Germany.

Clean TeQ Water has announced it has received the Commonwealth Simple Grant under the BRII: Renewables and Low Emissions Round – Feasibility program. This grant, facilitated by the Department of Industry, Science, and Resources, provides AU$80,000 (around USD$630,000) to support Clean TeQ Water’s innovative efforts to revolutionize drinking water treatment for remote communities. The grant will fund a feasibility study to assess the potential of NematiQ Graphene Membranes as a solution for drinking water treatment.

The project, “Graphene Membranes: Revolutionizing Drinking Water for Remote Communities”, will explore the efficiency, cost-effectiveness, and sustainability of the Graphene Membrane technology. It aims to improve water quality in underserved and remote areas, demonstrate the scalability and environmental benefits of Graphene Membranes, and lay the groundwork for a potential proof-of-concept phase, where up to AU$1M of funding for real-world field trials and pilot implementation is expected to be available for the projects deemed most feasible.

Singapore-based Memsift Innovations has entered into a technology transfer agreement with Singapore’s Ngee Ann Polytechnic on an innovative graphene membrane technology.

It was explained that the technology, featuring graphene oxide-based hollow fiber ultrafiltration and nanofiltration membranes, was developed based on over a decade of research and development. The ultrafiltration technology utilizes a graphene oxide-block copolymer composite renowned for its exceptional chemical and thermal stability, making it ideal for harsh industrial applications. Its unique surface chemistry forms a protective water layer that effectively prevents fouling. The nanofiltration technology employs a robust single-layer modified graphene oxide membrane with synthetic water channels, enhancing selectivity and permeability. This enables efficient molecular-level separation and differentiation between monovalent and multivalent ions.

Researchers from Pacific Northwest National Laboratory have found that reducing graphene oxide (GO) membranes with ultraviolet (UV) light alters the oxygen functional groups on the GO surface. This modification results in a different, chromatography-like separation mechanism that is selective for charge rather than size.

Image credit: Chemical Engineering Journal

Developing efficient, selective, and scalable separations for critical materials, including lithium and magnesium, is essential to meeting the increasing demands for clean energy technologies and alleviating challenges with domestic supply chains. GO membranes have shown promise for separating ions from mixed solutions based on size.

Canada-based Evercloak's HVAC technology recently received a funding boost, with CAD$1.1 million (over USD$807,000) in funding from Natural Resources Canada's Energy Innovation Program (EIP).

The EIP funding supports a $1.8M project enabling Evercloak to accelerate the development of their membrane-based system, which can cut the energy required for air conditioning and dehumidification by up to 50%. According to the Company's founder and CEO, Evelyn Allen, those reductions will be crucial as global temperatures rise.