We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Photocatalytic efficiency of bentonite-TQD via recycling and photodegradation of organic pollutants and industrial wastewater
Summary
Scientists created a new material that uses sunlight to break down toxic dyes from clothing factories in dirty water. This clay-based cleaner removed 93% of harmful dye pollution in just one hour and can be reused multiple times, making it cheaper than current methods. This matters because textile factory waste often contaminates drinking water sources, and this technology could help make that water safer for communities near manufacturing areas.
The efficient photocatalytic removal of textile dyes from industrial wastewater remains a critical environmental challenge. This study presents the synthesis and characterization of a bentonite-supported TiO₂ quantum dot (BTQD) nanocomposite via co-precipitation methodology for enhanced photodegradation of Brilliant Blue R (BBR) dye. Characterization confirms successful incorporation of uniformly distributed TQDs (5–8 nm average size) within the bentonite matrix, yielding a specific surface area of 212.25 m 2 g -1 , significantly higher than pristine bentonite. X-ray diffraction (XRD) analysis validates anatase TiO₂ formation with expanded basal spacing of 16.4 Å, indicating effective intercalation within clay interlayers. The composite exhibits a narrowed band gap of 3.18 eV, enhancing visible-light absorption relative to bulk TiO₂. Photocatalytic evaluation demonstrates that BTQD achieves 93% dye degradation within 60 min with a reaction rate constant of 28.01 × 10⁻ 3 min⁻ 1 , substantially outperforming pristine bentonite (68%) and isolated TiO₂ nanoparticles. The degradation follows pseudo-first-order kinetics, with hydroxyl radicals and superoxide anion radicals identified as principal reactive oxygen species (ROS). Recycling studies confirm exceptional photocatalyst stability over seven consecutive cycles with negligible activity loss. Chemical oxygen demand (COD) analysis demonstrates effective mineralization, reducing COD from 7150 mg L⁻ 1 to 610 ± 35 mg L⁻ 1 in treated textile effluent. Economic assessment establishes operational cost at $5.63/mm 3 , demonstrating practical scalability. The synergistic integration of abundant clay minerals with quantum-confined semiconductors yields a cost-effective, durable photocatalytic system suitable for sustainable industrial wastewater treatment and environmental remediation.
Sign in to start a discussion.
More Papers Like This
Waste Textile Reutilization Via a Scalable Dyeing Technology: A Strategy to Enhance Dyestuffs Degradation Efficiency
Researchers developed a greener way to recycle waste textiles by coating them with a titanium dioxide and graphene oxide material, turning old fabrics into pollution-fighting filters that absorb dye contaminants at night and break them down under sunlight during the day. The approach addresses both the fast fashion waste crisis and dye-related water pollution in a single sustainable system.
Engineered biochar-metal oxide nanocomposites for targeted dye remediation in textile wastewater
**TLDR:** This research review summarizes new materials that could better clean cancer-causing dyes from clothing factory wastewater before it reaches our drinking water sources. While lab tests show these materials can remove over 95% of harmful dyes, they don't work as well in real-world conditions with dirty industrial wastewater. Better water treatment is crucial since textile factories dump 280,000 tons of toxic dyes into waterways each year, threatening both wildlife and human health.
Rubber/BiOCl: Yb,Er composite for the enhanced degradation of methylene blue and Rhodamine B dyes under solar irradiation
Researchers created a composite material by combining a photocatalyst with recycled rubber from bicycle tires that can break down textile dyes under sunlight. The composite completely degraded methylene blue and rhodamine B dyes through solar-powered photocatalytic reactions. This approach demonstrates a practical way to repurpose rubber waste while simultaneously addressing water pollution from industrial dye contamination.
Peroxymonosulfate enhanced photocatalytic degradation of organic dye by metal-free TpTt-COF under visible light irradiation
Researchers developed a metal-free, visible-light-activated photocatalyst called TpTt-COF that, when combined with a chemical oxidant (peroxymonosulfate), degrades organic dye pollutants 13.9 times faster than a comparable carbon-based material. The catalyst remained 83% effective after five reuse cycles, making it a promising candidate for treating chemical contaminants in water.
Adsorption and Photocatalytic Mineralization of Bromophenol Blue Dye with TiO2 Modified with Clinoptilolite/Activated Carbon
Researchers studied the removal of a synthetic dye from wastewater using a titanium dioxide/activated carbon photocatalyst under UV light. Advanced photocatalytic water treatment technologies have potential application in degrading microplastics and associated chemical contaminants in wastewater streams.