New visible-light photocatalyst removes more than 92 per cent of antibiotic pollutants, advancing sustainable water purification technologies
-
![]()
Photo source: Jacob Wackerhausen / iStock
Researchers at the University of Tehran have developed an innovative nanotechnology-based solution capable of removing antibiotic contaminants from industrial wastewater with exceptional efficiency, marking a significant step forward in sustainable environmental protection, as reported by Mehr News Agency, a TV BRICS partner.
The research team successfully synthesised a novel nanocomposite photocatalyst that uses visible light to break down hazardous pharmaceutical pollutants, including the widely used antibiotic tetracycline. Laboratory tests demonstrated that the technology can eliminate more than 92 per cent of antibiotic residues from wastewater, offering a promising approach to addressing one of the growing environmental challenges associated with pharmaceutical contamination.
According to the scientists, antibiotic residues released into water systems have become an increasing concern worldwide due to their impact on ecosystems and their contribution to antimicrobial resistance. The newly developed material was specifically engineered to enhance the absorption of visible light and accelerate the degradation of harmful compounds.
The advanced nanocomposite combines zinc oxide with specialised nanostructures to create a highly efficient heterojunction system. Detailed analyses confirmed that the material significantly improves light absorption and charge separation, two key factors that determine photocatalytic performance.
Under optimal operating conditions, the photocatalyst achieved a degradation rate of 92.5 per cent for tetracycline within two hours of visible-light exposure. Researchers noted that conventional zinc oxide materials show only limited effectiveness under similar conditions, highlighting the importance of the newly designed structure.
One of the most notable advantages of the technology is its operational stability. The photocatalyst can be recovered and reused across multiple treatment cycles while maintaining high efficiency, reducing costs and improving its suitability for large-scale environmental applications.
Further investigation into the degradation process revealed that the nanocomposite is capable of breaking down complex antibiotic molecules into less harmful substances, helping to minimise environmental risks associated with pharmaceutical waste.
Scientists believe the achievement could contribute to the development of next-generation wastewater treatment systems for hospitals, pharmaceutical facilities and industrial sites. The innovation also strengthens efforts to create sustainable domestic technologies for water purification and environmental protection.
-
![]()
Technology18.08.26UAE approves first oral treatment for non-segmental vitiligo -
![]()
Technology18.08.26Chinese scientists develop living fungal textile that can repair damaged areas -
![]()
Technology18.08.26Vietnam steps up 6G preparations as it expands 5G network -
![]()
Technology17.08.26Chinese scientists employ new technology to scan cultural heritage sites for first time -
![]()
Technology15.08.26Ghanaian researchers develop plant-based lubricant for motorcycle engines -
![]()
Technology14.08.26Russia develops auto-calibration system for 3D printers
-
![Dilma Rousseff]()
Dilma RousseffPresident of the New Development Bank"India’s BRICS Presidency this year gives special significance to our discussion. NDB stands ready to be a trusted partner in turning commitments on sustainability, clean energy, smart and resilient infrastructure into concrete results on the ground. […] For NDB, mobilising private capital is a strategic imperative. Created by the BRICS founding members, NDB is a bank of the Global South, for the Global South, mandated to mobilise resources for infrastructure and sustainable development" -
![Sihasak Phuangketkeow]()
Sihasak PhuangketkeowDeputy Prime Minister and Minister of Foreign Affairs of Thailand"BRICS can play a very important role in maintaining the free flow of trade and investment. The group can also be a vehicle for all of us to engage and to look at economic opportunities"
