Ultrasonics Sonochemistry最新文献

{"title":"Influences of inter-bubble interactions on ultrasonic cavitation dynamics and subharmonic emissions in viscoelastic media with nonlinear elasticity","authors":"Dui Qin ,&nbsp;Qianru Yang ,&nbsp;Bingyu Zhang ,&nbsp;Wei Wang ,&nbsp;Xiaojuan Ji","doi":"10.1016/j.ultsonch.2025.107541","DOIUrl":"10.1016/j.ultsonch.2025.107541","url":null,"abstract":"<div><div>Ultrasonic cavitation in viscoelastic media is a physical process that features in a variety of chemical reactions, food processing, and biomedical applications due to a range of cavitation-associated physical, chemical, and biological effects. The cavitation effects are essentially caused by the dynamic behaviors of oscillating bubbles, which are strongly influenced by the complex and various inter-bubble interactions. However, how cavitation bubbles interact with each other and these interactions subsequently influence the ultrasonic cavitation dynamics and acoustic emissions in viscoelastic materials still remain poorly understood. This research, by incorporating both the interactions between bubbles and the nonlinear elasticity of viscoelastic medium, first modeled and numerically investigated the dynamics of interacting cavitation bubbles in viscoelastic media with nonlinear elasticity. Then, how the inter-bubble interactions affect the bubble dynamic behaviors and subharmonic cavitation emissions was quantitatively examined. Results revealed that the oscillation amplitudes are influenced differently for the case of two-bubble systems, <em>i.e.</em>, either the enhancement or suppression effects, which affect the cavitation bubbles of different sizes to various degrees. It was found that, in most cases, the cavitation bubble of larger sizes can exert more pronounced influences on the smaller one, potentially determining whether the smaller bubble can produce subharmonic emissions. Moreover, the subharmonic emission from each cavitation bubble can be newly generated or eliminated, as respectively compared to the non-interacting cases where the single bubble is unable or able to generate the subharmonics. These phenomena primarily result from the shifts and dampening effects observed in the subharmonic resonance peak of cavitation bubbles. Additionally, it demonstrated that an increase in the amplitude of ultrasound and a decrease in the distance between bubbles would intensify the interaction effects on the subharmonic resonance characteristics. Such enhanced interactions can alter the resonance behaviors as well as amplify the strength of the 1/2 order subharmonics manifested in the power spectra. These findings might provide new insights into the interaction effects on the ultrasonic cavitation dynamics and resultant subharmonic emissions.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107541"},"PeriodicalIF":9.7,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144921186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-intensified wet-heating induced Maillard reaction between hemp cake protein and maltodextrin: Structural characterisation, techno-functional and antioxidant properties","authors":"Marzieh Sadeghi ,&nbsp;Mohammad Mousavi ,&nbsp;Mohammad Saeid Yarmand ,&nbsp;Seyed Alireza Salami ,&nbsp;Zahra Sarlak ,&nbsp;Ehsan Parandi","doi":"10.1016/j.ultsonch.2025.107536","DOIUrl":"10.1016/j.ultsonch.2025.107536","url":null,"abstract":"<div><div>In this research, hemp protein isolate (HPI) was obtained from hemp cake using isoelectric precipitation and conjugated with maltodextrin through the Maillard reaction using wet-heating alone and combined with ultrasound to enhance its structural, functional properties (including solubility, emulsifying, foaming properties and water/oil holding capcity), and antioxidant properties. Covalent bonds between HPI and maltodextrin were confirmed using methods like SDS-PAGE, FTIR, XRD, fluorescence spectroscopy, secondary structure analysis, amino acid profile, and glycation degree (DG) measurement. Ultrasound significantly accelerated glycation, reaching a DG of 25.06 % in just 60 min, while reducing melanoidin formation, whereas wet-heating required 24 h to achieve a similar level of DG. Structural analysis revealed that wet-heating resulted in greater structural modifications due to its longer reaction time. These changes included a decrease in α-helix and β-sheet structures, higher surface hydrophobicity and zeta potential, and more noticeable microstructural changes. Techno-functional assessments revealed that wet-heating conjugates exhibited superior solubility (up to 95.77 %), emulsifying (emulsion stability index up to 48.67 %), and foaming (foaming capacity up to 107.14 %) properties, and antioxidant properties (71.95 % of ABTS), compared to ultrasound-assisted conjugates. This study highlights how ultrasound can intensify the wet-heating glycation of proteins to modify their structure, consequently improving their techno-functional properties to provide a novel plant-based protein ingredient for various food applications.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107536"},"PeriodicalIF":9.7,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of cavitation erosion distance on the damage of hydraulic turbine materials","authors":"Pengbo Wu ,&nbsp;Pengcheng Guo ,&nbsp;Shuaihui Sun ,&nbsp;Haipeng Nan ,&nbsp;Guojun Zhang","doi":"10.1016/j.ultsonch.2025.107534","DOIUrl":"10.1016/j.ultsonch.2025.107534","url":null,"abstract":"<div><div>Cavitation erosion could lead to material loss and structural damage in the flow components of hydraulic machinery, affecting the stable operation and efficiency of the equipment. This study established a cavitation erosion distance model for the gap in the cavitation field. High-speed cameras were used to capture the bubble distribution under different cavitation erosion distances. Additionally, the effects of cavitation erosion distance on the damage of stainless steel 06Cr16Ni5Mo, carbon steel 45#, and Q355B were investigated. The study revealed that when the cavitation erosion distance was short, the low number of cavitation bubbles in the gap volume reduced the impact frequency on the material surface. When the cavitation erosion distance was long, the attenuation of ultrasonic vibration propagation prevented gas nuclei at longer distances from developing into bubbles. Some small-volume bubbles further grew into larger-volume bubbles. The cavitation intensity distribution map obtained through image analysis showed that the maximum cavitation intensity occurring at the cavitation erosion distance of 1 mm. The maximum cumulative weight loss of three materials occurred at a cavitation erosion distance of 1 mm. The weight loss from highest to lowest was Q355B, 45#, and 06Cr16Ni5Mo. The cavitation damage of 06Cr16Ni5Mo was characterized by plastic deformation, with noticeable grain-boundary sliding and exfoliation. In contrast, the cavitation damage of 45# and Q355B was characterized by brittle spalling. The cavitation damage progression and failure mechanisms of the three hydraulic turbine materials were elucidated through comprehensive metallographic analysis. The experimental results provide guidance for enhancing the cavitation resistance of hydraulic turbine materials.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107534"},"PeriodicalIF":9.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-assisted deep eutectic solvent extraction of polysaccharides from Cercis chinensis bark: Optimization, kinetics and antioxidant activities","authors":"Penghua Shu ,&nbsp;Na Wang ,&nbsp;Yu Meng ,&nbsp;Shuxian Fan ,&nbsp;Simin Liu ,&nbsp;Xinfeng Fan ,&nbsp;Di Hu ,&nbsp;Hao Yin ,&nbsp;Huiying Wang ,&nbsp;Xin Wang ,&nbsp;Mengjiao Wu ,&nbsp;Feng Yu ,&nbsp;Xialan Wei ,&nbsp;Lin Zhang ,&nbsp;Jihong Huang","doi":"10.1016/j.ultsonch.2025.107535","DOIUrl":"10.1016/j.ultsonch.2025.107535","url":null,"abstract":"<div><div>This study pioneers a green, efficient ultrasound-assisted extraction (UAE) technique using a deep eutectic solvent (DES) to isolate polysaccharides from <em>Cercis chinensis</em> bark, overcoming limitations of conventional methods. Through systematic screening of 15 DES systems, DES-11 (L-proline:ethylene glycol, 1:2 M ratio) was identified as optimal, achieving a polysaccharide yield of 64.7 mg/g—3.7-fold higher than water extraction. Extraction conditions were optimized via response surface methodology (RSM) to 39 % water content, 45 °C, 28 min, solid–liquid ratio 1:40 g/mL, and 240 W ultrasonic power. SEM analysis confirmed that DES-11 disrupts plant cell walls, enhancing mass transfer. Kinetic studies revealed the process follows pseudo-first-order kinetics (R² &gt; 0.90) and is primarily controlled by intraparticle diffusion, with an apparent activation energy of 10.28 kJ·mol⁻¹. The DES-11 extracted polysaccharides exhibited moderate antioxidant activity, with IC₅₀ values of 0.54 mg/mL (DPPH), 0.24 mg/mL (ABTS) and 0.62 mg/mL (OH), suggesting potential as natural food preservatives. DES recyclability was validated over five cycles, retaining &gt; 78 % efficiency. This work establishes DES-UAE as a sustainable strategy for high-yield polysaccharide extraction, with mechanistic insights into kinetics and diffusion control.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107535"},"PeriodicalIF":9.7,"publicationDate":"2025-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasonication-induced structural and functional modification of starch in wheat flour","authors":"Jo-Tang Chang ,&nbsp;Chien-Shan Chiu ,&nbsp;Yung-Jia Chan ,&nbsp;Zeng-Chin Liang ,&nbsp;Wen-Chien Lu ,&nbsp;Po-Hsien Li","doi":"10.1016/j.ultsonch.2025.107529","DOIUrl":"10.1016/j.ultsonch.2025.107529","url":null,"abstract":"<div><div>This study investigated the effects of ultrasonication on the pasting, morphological, thermal, and rheological properties of wheat flour and dough, highlighting its potential as a green and sustainable processing technology. Wheat flour was treated with ultrasonic energy levels ranging from 40 to 140 kJ for 20 min. Rapid visco analysis (RVA) showed that at 40 kJ, peak viscosity increased from 1045.67 mPa·s (control) to 1259.00 mPa·s, and final viscosity rose from 2011.33 mPa·s to 2146.67 mPa·s, indicating enhanced gelatinisation. Differential scanning calorimetry revealed an increase in gelatinisation enthalpy (ΔH) from 8.03 J/g to 9.53 J/g, suggesting enhancement in molecular organisation. Rheological measurements demonstrated that ultrasonicated samples at 40 kJ and 100 kJ exhibited the lowest tan δ, suggesting improved elasticity and structural integrity. FTIR analysis confirmed intensified hydrogen bonding and improved gluten network formation. Low-field NMR and MRI analyses showed that ultrasonication significantly influenced water mobility and distribution within the dough. Moderate energy treatments (40 kJ to 100 kJ) enhanced water retention and network development. Scanning electron microscopy revealed surface roughness and partial granule disruption. These findings confirm that moderate ultrasonication enhances flour functionality by improving hydration, viscoelasticity, and thermal behaviour without the use of chemical additives. Ultrasonication offers an eco-friendly and energy-efficient approach for modifying wheat flour to improve the quality of sustainable flour-based products.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107529"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144933270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the nonlinear characteristic of a longitudinal piezoelectric ultrasound transducer with stepped horn","authors":"Zhongji Yang ,&nbsp;Long Xu ,&nbsp;Haidao Zhang ,&nbsp;Tao Gong ,&nbsp;Zhaofeng Liang ,&nbsp;Lei Yao","doi":"10.1016/j.ultsonch.2025.107533","DOIUrl":"10.1016/j.ultsonch.2025.107533","url":null,"abstract":"<div><div>Longitudinal vibration sandwich piezoelectric transducers with a stepped horn are widely used in high-intensity ultrasonic applications such as ultrasonic welding, ultrasonic machining, and ultrasonic cleaning. In these applications, due to the increased losses, transducers exhibit nonlinear phenomena such as heating, resonance frequency drift, and amplitude saturation. Consequently, existing linear theoretical models are no longer suitable for analyzing the nonlinear characteristics of such transducers. In this paper, we develop a nonlinear equivalent circuit model for a longitudinal vibration piezoelectric transducer with a stepped horn, considering elastic loss, composite loss (the total loss resulting from the combination of elastic, dielectric, and piezoelectric losses) and structural damping loss. Through theoretical analysis, finite element simulation, and experimental testing, we investigate the effects of each type of loss on the key electromechanical performance parameters of the transducer. The research results provide accurate theoretical guidance and reference data for the application of such transducers in high-intensity ultrasonic scenarios.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107533"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effect of multifrequency ultrasound treatments on structure, rheological, and digestive properties of starch in frozen wheat dough","authors":"Zahoor Ahmed ,&nbsp;Abid Hussain ,&nbsp;Umar Farooq ,&nbsp;Yibin Zhou ,&nbsp;Isam A. Mohamed Ahmed ,&nbsp;Muhammad Waseem ,&nbsp;Bin Xu ,&nbsp;Muhammad Faisal Manzoor ,&nbsp;Robert Mugabi","doi":"10.1016/j.ultsonch.2025.107507","DOIUrl":"10.1016/j.ultsonch.2025.107507","url":null,"abstract":"<div><div>This study explores the impact of multifrequency ultrasonic treatments on the properties of wheat frozen dough starch at different treatment times (15, 25, and 35 min). Fundamental properties analyzed included particle size, solubility, swelling power, differential scanning calorimetry (DSC), X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), morphological traits, digestibility, and rheological characteristics. Results indicate that ultrasonication (US) enhances the amylose content, solubility, and swelling power of the frozen wheat dough starch. Treatment led to a significant increase (p &lt; 0.05) in rapidly digestible starch (RDS) and resistant starch (RS) with a longer exposure time. Specifically, RDS content rose 30 % with multifrequency ultrasound (T2 20/40/60/25 min), while RS and slowly digested starch (SDS) decreased at 35 min. FTIR analysis revealed notable peaks between 3290 and 3299 cm⁻¹, corresponding to the O-H stretching of hydroxyl groups. Rheological characteristics increased in storage modulus (G’) and loss modulus (G’’) after 25 min (20/40/60) of US, then decreased at 35 min. Ultrasound treatment caused surface depressions and pores on wheat starch granules in the frozen dough. This research highlights the efficacy of multifrequency US in augmenting the functional, rheological, and ultra-structural properties of wheat frozen dough. By counteracting the deleterious effects of freezing, this innovative approach shows considerable promise in enhancing the processing quality of frozen dough starch.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107507"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144896390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound-assisted extraction of neuroprotective antioxidants from Ganoderma lucidum","authors":"Jing Cui ,&nbsp;Decheng Wang ,&nbsp;Yue Liu ,&nbsp;Tingting Zhang ,&nbsp;Yanggege Liu ,&nbsp;Yubo Cheng ,&nbsp;Xuejin Liu","doi":"10.1016/j.ultsonch.2025.107528","DOIUrl":"10.1016/j.ultsonch.2025.107528","url":null,"abstract":"<div><div><em>Ganoderma lucidum</em> (GL), a traditional Chinese medicinal fungus, is rich in triterpenoids and phenols with antioxidant properties. Nevertheless, current extraction techniques limit the efficient utilization of bioactive components from GL. This study aims to optimize the extraction process of triterpenoids and phenols, enhance their antioxidant activities, and assess their neuroprotective activities against oxidative damage. Here, we used response surface methodology (RSM) coupled with artificial neural network-genetic algorithm (ANN-GA) modeling to optimize ultrasound-assisted extraction (UAE) parameters for simultaneous extraction of triterpenoids and phenols. Following extraction, the microstructures of the GL powder were examined using scanning electron microscopy (SEM). UPLC-Q-TOF MS/MS was utilized to qualitatively analyze triterpenoid and phenolic compositions of GL extracts. We then investigated the neuroprotective effects of these extracts using an H₂O₂-induced oxidative stress model in PC12 cells. We found that the optimized extraction conditions were 320 W ultrasonic power, 74 % ethanol, 61 mL/g liquid–solid ratio, and 69 min duration. Yields of the extracts per gram of GL were: TTC 4.61 ± 0.08 mg, TPC 4.53 ± 0.09 mg, DPPH scavenging 93.96 ± 4.62 %, and 1.225 ± 0.008 mM Fe²⁺, with SEM confirming the effectiveness of UAE. UPLC-Q-TOF MS/MS analysis identified 20 triterpenoids (9 newly reported) and 8 phenols (7 newly reported). These extracts safeguarded PC12 cells from H₂O₂-induced oxidative injury by restoring cell morphology, enhancing cell viability, reducing LDH release, intracellular calcium, ROS and MDA, and increasing antioxidant enzyme activities. These findings support the use of GL extracts in functional foods and pharmaceuticals.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107528"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144908911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MnOx nanoflower-based ultrasound-responsive drug delivery for sonodynamic therapy of wound infections","authors":"Jiahui Xu ,&nbsp;Yi Liu ,&nbsp;Guangzheng Zhang ,&nbsp;Jinmei Wu ,&nbsp;Xujie Cui ,&nbsp;Wenqing Wei ,&nbsp;Ziyan Yuan ,&nbsp;Linlin Bu ,&nbsp;Heyou Han ,&nbsp;Weihui Li ,&nbsp;Zhiyong Song","doi":"10.1016/j.ultsonch.2025.107530","DOIUrl":"10.1016/j.ultsonch.2025.107530","url":null,"abstract":"<div><div>The rapid spread of drug-resistant bacterial infections has become a major global health challenge, particularly in the treatment of deep organ abscesses, which often lead to severe and life-threatening infections. Traditional light-responsive and microenvironment-responsive nanoparticle drug delivery systems (DDSs) have limitations in treating deep abscesses. In contrast, ultrasound (US)-driven sonodynamic therapy (SDT), with its non-invasive, targeted radiation and excellent tissue penetration capabilities, offers great potential for eradicating deep bacterial infections. This study proposes an ultrasound-driven manganese-based nanoparticle drug delivery system (AMP) for the effective treatment of methicillin-resistant <em>Staphylococcus aureus</em> (MRSA) infections. The core of the system is manganese oxide (MnOx) nanoflowers, which serve as the nanoparticle carrier, loaded with the antimicrobial non-antibiotic drug auranofin, and surface-modified with polyethylene glycol to enhance its biocompatibility and drug delivery performance. AMP demonstrates significant antibacterial activity <em>in vitro</em> and effectively promotes wound healing under US-driven stimulation. Furthermore, the potential antibacterial and wound-healing mechanisms of AMP are revealed for the first time. This study cleverly combines non-antibiotic drugs with inorganic nanomaterials to successfully achieve efficient SDT, providing a new and effective strategy for treating deep bacterial infections.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107530"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144904650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tweaking the electrocatalytic efficiency of sonochemically synthesized Bi2S3 nanorods through decoration with f-MWCNTs: A selective on-site detection of METOL in environmental samples","authors":"Harikrishnan Sathya ,&nbsp;Amal A. Abdel Hafez ,&nbsp;Mani Govindasamy ,&nbsp;Pin-Yi Chen","doi":"10.1016/j.ultsonch.2025.107531","DOIUrl":"10.1016/j.ultsonch.2025.107531","url":null,"abstract":"<div><div>In this study, we have established a highly conductive Bi₂S₃/f-MWCNT nanocomposite through a sonochemical approach using a probe sonicator (100 W, 25 kHz), which functions as an effective electrochemical probe for the detection of 4-(methylamino)phenol sulfate or METOL (MET) in environmental water samples. MET, a widely used chemical in hair dyes and the photographic industries, poses significant environmental concerns when released into water systems, contributing to water pollution and ecological disruption. Comprehensive characterization techniques confirmed the structural integrity and enhanced electrochemical properties of the Bi₂S₃/f-MWCNT nanocomposite. The as-prepared Bi₂S₃/f-MWCNT demonstrated exceptional sensing capabilities, with a phenomenal limit of detection of 6.52 nM within a linear range of 0.01 to 2100 μM, and exhibited a sensitivity of 10. 514 μA μM⁻¹ cm⁻². The practical applicability of the sensor was validated through its successful use in detecting MET in real-world environmental samples, such as river water, pond water, wastewater, and tap water. Additionally, the integration of the Bi₂S₃/f-MWCNT sensor with a smart potentiostat provides a powerful platform for on-site monitoring of water quality. This work offers a promising approach for the detection of industrial pollutants and provides a potential solution for advancing environmental sustainability.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"121 ","pages":"Article 107531"},"PeriodicalIF":9.7,"publicationDate":"2025-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144917348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}