We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Graphene and gold nanoparticle-based bionanocomposite for the voltammetric determination of bisphenol A in (micro)plastics
AI summary Read the abstract
Researchers developed a highly sensitive electrochemical sensor using graphene and gold nanoparticles to detect bisphenol A leaching from plastics and microplastics in water. The sensor achieved very low detection limits and worked reliably in real water samples. This tool could help environmental scientists and regulators better monitor harmful chemical release from plastic pollution in freshwater and marine environments.
The monitoring of endocrine disruptors in the environment is one of the main strategies in the investigation of potential risks associated with exposure to these chemicals. Bisphenol A is one of the most prevalent endocrine-disrupting compounds and is prone to leaching out from polycarbonate plastic in both freshwater and marine environments. Additionally, microplastics also can leach out bisphenol A during their fragmentation in the water environment. In the quest for a highly sensitive sensor to determine bisphenol A in different matrices, an innovative bionanocomposite material has been achieved. This material is composed of gold nanoparticles and graphene, and was synthesized using a green approach that utilized guava (Psidium guajava) extract for reduction, stabilization, and dispersion purposes. Transmission electron microscopy images revealed well-spread gold nanoparticles with an average diameter of 31 nm on laminated graphene sheets in the composite material. An electrochemical sensor was developed by depositing the bionanocomposite onto a glassy carbon surface, which displayed remarkable responsiveness towards bisphenol A. Experimental conditions such as the amount of graphene, extract: water ratio of bionanocomposite and pH of the supporting electrolyte were optimized to improve the electrochemical performance. The modified electrode displayed a marked improvement in current responses for the oxidation of bisphenol A as compared to the uncovered glassy carbon electrode. A calibration plot was established for bisphenol A in 0.1 mol L Britton-Robinson buffer (pH 4.0), and the detection limit was determined to equal to 15.0 nmol L. Recovery data from 92 to 109% were obtained in (micro)plastics samples using the electrochemical sensor and were compared with UV-vis spectrometry, demonstrating its successful application with accurate responses.
More Papers Like This
Electrochemical detection of phenolic nanoplastic water pollutants using graphene/ceria nanocomposite
AI summary Read the abstract
Scientists have developed a highly sensitive sensor made from graphene and cerium oxide nanoparticles that can detect two toxic chemicals, hydroquinone and catechol, commonly released as plastic breaks down in water. This matters because these chemicals are linked to harmful health effects, and the new sensor worked accurately even in real tap, lake, and river water samples, offering a practical tool for monitoring plastic pollution in our water supply.
Highly selective electrochemical impedance spectroscopy-based graphene electrode for rapid detection of microplastics
AI summary Read the abstract
A graphene electrode derived from petroleum waste was developed and applied as an electrochemical impedance spectroscopy sensor for highly selective detection of microplastics in aquatic samples. The approach offers a sensitive and selective alternative to optical methods for environmental microplastic monitoring.
Development of Cost-Effective Sensor for Simultaneous Determination of Nanoplastics Using Artificial Neural Network
AI summary Read the abstract
Researchers developed a cost-effective electrochemical sensor using silver nanoparticle-modified electrodes to simultaneously detect nanoplastic-associated pollutants including bisphenol A, phenol, and catechol in water. The sensor achieved high sensitivity with detection limits in the sub-micromolar range and was validated on real water samples, while an artificial neural network was trained on the electrochemical data to enhance analytical capabilities.
Nanomaterial-based electrochemical chemo(bio)sensors for the detection of nanoplastic residues: trends and future prospects
AI summary Read the abstract
This study reviews how nanomaterial-based electrochemical sensors can be used to detect tiny nanoplastic residues in water. Researchers found that these sensors offer a promising, practical approach for monitoring nanoplastic contamination in aquatic ecosystems. The findings suggest that advancing these detection tools is important for implementing effective water quality control measures.
Recent advances in the detection of microplastics in the aqueous environment by electrochemical sensors: A review
AI summary Read the abstract
This review surveys recent advances in using electrochemical sensors to detect microplastics in water environments. Researchers evaluated sensors made from carbon materials, metals, biomass materials, and microfluidic chips, comparing their detection capabilities and practical advantages like low cost and high sensitivity. The study highlights electrochemical sensing as a promising approach for real-time, on-site monitoring of microplastic contamination in waterways.
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.