Ultrasonics Sonochemistry最新文献

{"title":"Does macroscopic mass transfer affect sonochemical reaction rate in an ultrasonic bath?","authors":"Takuya Yamamoto ,&nbsp;Shinya Okino","doi":"10.1016/j.ultsonch.2025.107361","DOIUrl":"10.1016/j.ultsonch.2025.107361","url":null,"abstract":"<div><div>In the present study, a planar laser induced fluorescence (P-LIF) measurement, reaction rate measurement, the sonochemical luminescence (SCL) observation, and the particle image velocimetry (PIV) measurement were conducted to clarify the effect of macroscopic mass transfer on sonochemical reaction rate in an ultrasonic bath. The concentration distribution was measured by the fluorescence intensity of Rhodamine 6G (Rh6G), which was illuminated by a CW-YAG laser sheet. The concentration of Rh6G decreases first in the high reaction zone measured by the SCL observation, and the resulting low-concentration zone expands to the low reaction zone through macroscopic convective mass transfer, which can be observed as solute plumes. Therefore, it is concluded that the mass transfer rate can slightly affect the chemical reaction rate due to the nonuniform concentration distribution in the early stage of sonochemical reaction. The reaction rate is slightly underestimated due to the spatial variation of the concentration in the early stage of ultrasonic degradation. The effect of macroscopic mass transfer on the sonochemical reaction rate was evaluated by first Damköhler number, which was calculated based on the flow velocity obtained by the PIV measurement and the reaction rate constant obtained by the decomposition experiment. Finally, it could be concluded that the first Damköhler number evaluates the effect of macroscopic mass transfer on the sonochemical reaction rate quantitatively and this dimensionless number can be applied to other ultrasonic bath with different condition.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107361"},"PeriodicalIF":8.7,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844905","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":"Mesoscopic modeling the interaction of two attached-wall cavitation bubbles","authors":"Weidong Gan ,&nbsp;Shicheng Li ,&nbsp;Xiaolong He ,&nbsp;Dianguang Ma","doi":"10.1016/j.ultsonch.2025.107358","DOIUrl":"10.1016/j.ultsonch.2025.107358","url":null,"abstract":"<div><div>A hybrid thermal lattice Boltzmann cavitation model based on a nonorthogonal framework is developed to investigate the interaction of two attached-wall cavitation bubbles. The interaction modes are systematically analyzed, with an emphasis on how varying contact angles influence the flow and temperature distributions, as well as the evolution of wall heat flux under strong and weak interaction conditions. Bubbles formed on the hydrophobic surface display increased contact radius and greater curvature radii compared to those on the hydrophilic wall, leading to greater volumes but weaker collapse intensity. The growth rate of the bubble equivalent radius for the weak interaction modes consistently follows the relation <span><math><mrow><mi>U</mi><mo>∝</mo><msqrt><mrow><mn>2</mn><msub><mi>p</mi><mi>∞</mi></msub><mo>/</mo><mn>3</mn><msub><mi>ρ</mi><mi>l</mi></msub></mrow></msqrt></mrow></math></span>. Additionally, bubble coalescence occurs at the interface regions along the hydrophobic surface, altering the final collapse dynamics and resulting in distinct temperature and velocity distributions. Finally, the instantaneous heat flux characteristics are explored. Due to differences in the contact points motion rate and microjet angle with the solid wall, the peak value and number of heat flux peaks vary on walls with different wettability.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107358"},"PeriodicalIF":8.7,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143844896","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":"A vortex-based hydrodynamic cavitation manufacturing platform to generate albumin microbubbles for delivery of chemotherapies to cancerous tumours","authors":"Promita Bhattacharjee ,&nbsp;Abhijeet H. Thaker ,&nbsp;Pratik Kumar Patel ,&nbsp;Vivek V. Ranade ,&nbsp;Sarah P. Hudson","doi":"10.1016/j.ultsonch.2025.107350","DOIUrl":"10.1016/j.ultsonch.2025.107350","url":null,"abstract":"<div><div>A novel approach was developed to create stable protein-based microbubbles using a vortex-driven hydrodynamic cavitation device. Such microbubbles, tiny gas-filled spheres, combined with ultrasound, can enhance drug uptake leading to inhibition of cancerous cell growth, boosting the effectiveness of anti-cancer drug molecules. The optimal conditions for the fabrication of stable bovine serum albumin (BSA) microbubbles were found to be a 15 wt% bovine serum albumin (BSA) solution at 60 °C with a pH of 6 and an ionic strength of 1.0 M. This resulted in stable BSA microbubbles with an approximate diameter of 7 μm. Curcumin-encapsulated BSA microbubbles (CBMs, 63 ± 1 μM curcumin per 10¹⁰ microbubbles) were created using these optimised fabrication parameters as a model system for delivering chemotherapeutic agents. The maximum percentage of curcumin release from the CBMs into phosphate buffered saline with sonication (85 %) was significantly greater than without sonication (24 %). These microbubbles were then tested to assess their effectiveness in delivering curcumin to triple-negative breast cancer cells (MDAMB-231) using a cell-to-MB ratio of 1:100, an ultrasound intensity of 0.5 W/cm², and an ultrasound exposure time of 10 s to maximise uptake. Kinetic studies demonstrated a significant enhancement in the uptake of curcumin by MDAMB-231 cells when encapsulated into the microbubbles with ultrasound application. A substantial reduction in cellular proliferation was observed in both 2D cell culture and 3D tumour spheroid models when MDAMB-231 cells were exposed to microbubbles loaded with curcumin and ultrasound was applied. The vortex-based hydrodynamic cavitation device successfully generated curcumin loaded microbubbles with a long shelf life (120 days at 4 °C), mild preparation conditions, and enhanced uptake into cancerous tumour spheroid models. This data demonstrates the potential of this device for the commercial manufacture of drug loaded microbubble-based delivery systems.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107350"},"PeriodicalIF":8.7,"publicationDate":"2025-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143852347","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":"Assessment of mechanical-loss property of 3D printing metal and its application to ultrasonic transducers as vibrating bodies","authors":"Lipeng Wang ,&nbsp;Ranxu Zhang ,&nbsp;Jiang Wu ,&nbsp;Chengqi Pan ,&nbsp;Xiaoming Yue ,&nbsp;Qiang Zhang ,&nbsp;Yibin Li","doi":"10.1016/j.ultsonch.2025.107356","DOIUrl":"10.1016/j.ultsonch.2025.107356","url":null,"abstract":"<div><div>As miniaturized ultrasonic transducers with sophisticated structure have become increasingly demanded, the vibrating bodies made by conventional metals face the problem of fabricating difficulty and high expenses. The 3D printing metals are prospective materials for their flexibility in forming complicated configurations, but their mechanical-loss properties need clarification as they greatly affect the vibration properties. As a pilot trail, first, an approach to measure the attention coefficients according to the distributions of the vibration velocity and the phase was developed to evaluate their dependence on the strain and the frequency. Then, an aluminum alloy via 3D printing (AlSi10Mg) was employed as the vibrating bodies to form the ultrasonic transducers, whose performance, e.g., vibration properties, temperature rise, and sound pressure level (SPL) in water, was assessed and compared with conventional aluminum alloy (7075). As typical results, AlSi10Mg’s damping coefficient is 1.16 times that of 7075 at 33 kHz frequency; this implies the 3D printing process does not deteriorate the aluminum alloy’s mechanical-loss property. Meanwhile, AlSi10Mg’s damping coefficient reaches 2.19 × 10^-4 at the laser power of 350 W, relatively small compared to the values corresponding to other laser powers; this indicates the capability to reduce the mechanical loss by adjusting the parameters during 3D printing possesses. Moreover, the maximum vibration velocity and the SPL of the AlSi10Mg transducer are 1.13 and 1.11 times those of the 7075 transducer that has the same configuration and operates in the same vibration modes. This study enriches the candidate materials as the vibrating bodies of ultrasonic transducers, which potentially meet the demands in wider ultrasonic application fields.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107356"},"PeriodicalIF":8.7,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839142","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-activated piezoelectric biomaterials for cartilage regeneration","authors":"Yangchen Wei ,&nbsp;Zhengyang Li ,&nbsp;Tianjing Yu ,&nbsp;Yan Chen ,&nbsp;Qinglai Yang ,&nbsp;Kaikai Wen ,&nbsp;Junlin Liao ,&nbsp;Linlin Li","doi":"10.1016/j.ultsonch.2025.107353","DOIUrl":"10.1016/j.ultsonch.2025.107353","url":null,"abstract":"<div><div>Due to the low density of chondrocytes and limited ability to repair damaged extracellular matrix (ECM) in cartilage, many patients with congenital or acquired craniofacial trauma require filler graft materials to support facial structure, restore function, improve self-confidence, and regain socialization. Ultrasound has the capacity to stimulate piezoelectric materials, converting mechanical energy into electrical signals that can regulate the metabolism, proliferation, and differentiation of chondrocytes. This unique property has sparked growing interest in using piezoelectric biomaterials in regenerative medicine. In this review, we first explain the principle behind ultrasound-activated piezoelectric materials and how they generate piezopotential. We then review studies demonstrating how this bioelectricity promotes chondrocyte regeneration, stimulates the secretion of key extracellular components and supports cartilage regeneration by activating relevant signaling pathways. Next, we discuss the properties, synthesis, and modification strategies of various piezoelectric biomaterials. We further discuss recent progresses in the development of ultrasound-activated piezoelectric biomaterials specifically designed for cartilage regeneration. Lastly, we discuss future research challenges facing this technology, ultrasound-activated piezoelectric materials for cartilage regeneration engineering. While the technology holds great promise, certain obstacles remain, including issues related to material stability, precise control over ultrasound parameters, and the integration of these systems into clinical settings. The combination of ultrasound-activated piezoelectric technology with other emerging fields, such as Artificial Intelligence (AI) and cartilage organoid chips, may open new frontiers in regenerative medicine. We hope this review encourages further exploration of ultrasound-activated strategies for piezoelectric materials and their future applications in regenerative medicines.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107353"},"PeriodicalIF":8.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839144","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":"Effects of ultrasound-induced structural modifications on the emulsifying properties of Tenebrio molitor proteins","authors":"Yun Jae Jang ,&nbsp;Hyeong Do Kim ,&nbsp;Yu Ji Ye ,&nbsp;Ming Kong ,&nbsp;Woo Su Lim ,&nbsp;Min Hyeock Lee","doi":"10.1016/j.ultsonch.2025.107354","DOIUrl":"10.1016/j.ultsonch.2025.107354","url":null,"abstract":"<div><div>Ultrasonication has emerged as a promising technique for modifying physicochemical properties of proteins, enhancing their functionality in food applications. This study evaluated the effects of ultrasonic treatment on the structural and functional properties of mealworm-derived proteins (MPs) and their potential as emulsifiers. Dynamic light scattering revealed a significant reduction in MP particle size from 3464.3 nm (untreated) to 115.5 nm (30 min sonication), along with increased zeta potential, indicating improved colloidal stability. Sonication enhanced oil-holding capacity and solubility, suggesting improved interfacial adsorption and emulsification. Circular dichroism and FT-IR spectroscopy confirmed structural modifications, including increased α-helix content and enhanced hydrogen bonding interactions. Free sulfhydryl content and surface hydrophobicity analyses indicated ultrasound-induced unfolding, exposing functional groups that contribute to emulsifying properties. Sonicated MPs demonstrated superior emulsion stability under varying temperature, pH, and ionic conditions. Furthermore, digestibility analysis showed improved gastric digestion (72.7 % to 82.8 %) and enhanced lipid digestion in the small intestine (36.2 % to 47.9 %), suggesting greater bioavailability. These physicochemical modifications highlight the feasibility of using sonicated MP as natural emulsifiers with enhanced functionality. This study underscores their potential in food formulations, particularly for nutritionally fortified emulsions, contributing to sustainable and functional food ingredient development.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107354"},"PeriodicalIF":8.7,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143826030","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":"Pulsation of bubbles in the viscoelastic medium under dual-frequency ultrasound","authors":"Yu Wang ,&nbsp;Dehua Chen ,&nbsp;Pengfei Wu","doi":"10.1016/j.ultsonch.2025.107344","DOIUrl":"10.1016/j.ultsonch.2025.107344","url":null,"abstract":"<div><div>The pulsation of bubbles under dual-frequency ultrasound is closely associated with their application in medical diagnostics. In this study, we derive the analytical solution of the bubble dynamic equations in viscoelastic media under dual-frequency ultrasound and compare it with numerical solutions. The effects of the surrounding medium’s viscoelasticity, bubble equilibrium radius, incident acoustic frequency, and incident sound pressure ratio on the bubble pulsation and its scattered acoustic waves are analyzed. The results demonstrate consistency between the analytical and numerical solutions. Moreover, our analytical solution reveals that an increase in medium viscosity leads to a decrease in the amplitude of bubble pulsation, even at resonance frequency. Additionally, when the sound pressure ratio is 1, both the difference frequency and sum frequency exhibit maximum amplitude in the spectrum of instantaneous bubble radius. Furthermore, for resonance approximation in sparse bubble cluster detection using sum and difference frequencies, it is necessary for incident frequency <em>f</em>₁ to be greater than twice the resonance frequency of the smallest bubble within the cluster.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107344"},"PeriodicalIF":8.7,"publicationDate":"2025-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143855179","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 green synthesis of silver nanoparticles using Ruta graveolens L. Extract and antitumor evaluation","authors":"Nikita Gandlevskiy ,&nbsp;Altevir Rossato Viana ,&nbsp;Gabriel Toneto Druzian ,&nbsp;Daiana Kaminski Oliveira ,&nbsp;Andre Passaglia Schuch ,&nbsp;Alessandro Barge ,&nbsp;Giancarlo Cravotto ,&nbsp;Erico Marlon Moraes Flores","doi":"10.1016/j.ultsonch.2025.107340","DOIUrl":"10.1016/j.ultsonch.2025.107340","url":null,"abstract":"<div><div>This study aims to evaluate the ultrasound-assisted synthesis of silver nanoparticles (AgNPs) based on an aqueous extract of <em>Ruta graveolens</em> L. to reduce Ag⁺ to Ag⁰. In addition, the biological activity of the synthesized AgNPs was evaluated against tumor cells. The following parameters were evaluated for the synthesis: proportion between Ag⁺ solution (0.1 mol L^-1 Ag⁺) and <em>R. graveolens</em> L. extract, pH of <em>R. graveolens</em> L. extract (5, 7, and 9), temperature of solution containing Ag⁺ and <em>R. graveolens</em> L. extract, ultrasound (US) type (bath and probes), and the parameters for US as frequency (37, and 80 kHz for bath and 20 kHz for probes), amplitude and time of application of US. In order to confirm the US effect, “silent” experiments (without US) were performed. Using the optimized conditions (US bath, proportion between Ag⁺ solution and <em>R. graveolens</em> L. of 1 + 5, v v^-1, 80 kHz, 70 % amplitude, 70 °C, pH 9, and 25 min of sonication time) it was possible to obtain mean size, PI, and zeta potential of AgNPs of 30 nm, 0.129, −34.44 mV, respectively. For comparison of results, AgNPs synthesized in the “silent” condition presented mean size, PI, and zeta potential of 66 nm, 0.412, and –22.12 mV, respectively. The US synthesized AgNPs were lower, more uniform, and stable when compared with magnetic stirring. In addition, the morphology of AgNPs using US was predominantly spherical and monodisperse. The biological activity using cell lines HaCat (keratinocytes), L929 (fibroblasts), and B16-F10 (melanoma) against nanoparticles synthesized using US was evaluated against the different cell lines and the antioxidant activity of the AgNPs was measured by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method. A higher cytotoxic effect on the melanoma cell line (IC₅₀ = 2.12 µg mL⁻¹) compared to normal cells. A good result was found in the DPPH assay, with an IC₅₀ of 234.3 µg mL⁻¹ for free radical scavenging. Therefore, the US technology presents a promising and sustainable green method avoiding the use of toxic reagents and obtained AgNPs showed potent anticancer activity.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107340"},"PeriodicalIF":8.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143868839","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":"Ball motion and bubble ripples in the interaction of cavitation bubble-elastic ball-curved wall","authors":"Yanyang Liu ,&nbsp;Jing Luo ,&nbsp;Lixin Bai ,&nbsp;Jiankun Hu","doi":"10.1016/j.ultsonch.2025.107348","DOIUrl":"10.1016/j.ultsonch.2025.107348","url":null,"abstract":"<div><div>Elastic ball motion and cavitation bubble ripples in cavitation bubble-elastic ball-curved wall interaction was investigated experimentally using single-electrode periodic discharge bubble generation technology and high-speed photography. It was found that the hard ball undergoes a process of “push-pull-push-pull” as the dimensionless bubble-ball distance increases, while the elastic ball undergoes a process of “push-pull” in the same scenario. This is mainly due to the combined effects of the expansion ejection effect, the reverse thrust of liquid jet and the secondary Bjerknes force of cavitation bubble and its rebound bubble, which are strengthened or weakened. The radial vibration of the elastic ball causes a continuous secondary Bjerknes force attraction effect between the ball and the wall, similar to that between an acoustic bubble and a wall. In the interaction of “cavitation bubble-elastic ball-curved wall,” there is a state of equilibrium stability where the centerline of the “bubble-ball” coincides with the centerline of the “bubble-wall.” Both the ball and the bubble will move towards this equilibrium position. This is a result of the three forces with different starting and ending points—the “bubble-wall” secondary Bjerknes force, the “ball-wall” secondary Bjerknes force, and the “bubble-ball” interaction force—reaching a condition of equilibrium. The evolution of the cavitation bubble is usually dominated by toroidal jets, sometimes forming multi-layered nested toroidal jets (annular cylindrical jet). The surface tension waves of the bubble, the elastic modulus waves and the curvature waves of the elastic ball work together to form cavitation bubble ripples. Under the primary intensification of the bubble’s rapid collapse and the secondary intensification of the wall effect, the bubble ripples are reinforced, leading to the formation of multi-layered nested toroidal jets.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107348"},"PeriodicalIF":8.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143839143","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":"Enhanced sonophotocatalytic degradation of phthalate acid ester using copper-chromium layered double hydroxides on carbon nanotubes and biochar","authors":"Tannaz Sadeghi Rad ,&nbsp;Alireza Khataee ,&nbsp;Emine Sevval Yazici ,&nbsp;Erhan Gengec ,&nbsp;Mehmet Kobya ,&nbsp;Yeojoon Yoon","doi":"10.1016/j.ultsonch.2025.107351","DOIUrl":"10.1016/j.ultsonch.2025.107351","url":null,"abstract":"<div><div>Layered double hydroxides (LDHs) are lamellar and stable nanocatalysts driven by visible light. They have received much attention in the context of advanced oxidation processes. Their catalytic performance is remarkably restricted owing to undesired aggregation and the possibility of electron-hole recombination. To address these issues, we engineered carbon-nanotube (CNT)-and biochar (BC)-based CuCr LDH nanocomposites via a facile hydrothermal method. The synthesized nanocomposites were physically and chemically characterized using various methods. The performances of the BC-CuCr LDH and CNT-CuCr LDH nanocomposites were compared during the sonophotocatalytic degradation of dimethyl phthalate. With 1.5 g L^-1 of BC-CuCr LDH, complete degradation of dimethyl phthalate was achieved within 25 min under 50 W light intensity and 150 W ultrasound irradiation with a synergy factor of 14. The critical roles of the hydroxyl and superoxide radicals were confirmed by the addition of several inhibitors. Ultimately, six possible intermediates generated during the sonophotocatalytic process were identified using gas chromatography-mass spectrometry (GCMS).</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"117 ","pages":"Article 107351"},"PeriodicalIF":8.7,"publicationDate":"2025-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143850547","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}