Ultrasonics Sonochemistry最新文献

{"title":"Three-dimensional ultrasonography: Advancing the clinical evaluation of adolescent idiopathic scoliosis","authors":"Xinyu Yang ,&nbsp;Derun Di ,&nbsp;Yanhong Lv ,&nbsp;Zhe Liu ,&nbsp;Xiaoxiong Wang ,&nbsp;Xinzhi Zhang ,&nbsp;Rongkun Xu ,&nbsp;Luoran Wang ,&nbsp;Yuze Wang ,&nbsp;Suomao Yuan ,&nbsp;Yonghao Tian ,&nbsp;Qiang Yang ,&nbsp;Xinyu Liu ,&nbsp;Lianlei Wang","doi":"10.1016/j.ultsonch.2025.107391","DOIUrl":"10.1016/j.ultsonch.2025.107391","url":null,"abstract":"<div><div>The clinical efficacy of 3D ultrasound for spinal curvature assessment was evaluated in adolescent idiopathic scoliosis (AIS) patients through comparative analysis with conventional radiography. A prospective cohort of 230 preoperative and 22 postoperative AIS patients was evaluated over a 24-month period. Spinal curvature assessments were performed using a standardized 3D ultrasound system (SCN801), with reliability quantified via intraclass correlation coefficients (ICC) and validity assessed through Spearman correlation analysis. Ultrasound measurements demonstrated good reliability (ICC &gt; 0.70), particularly for transverse process (TP)-based angle measurements, which showed superior consistency (ICC &gt; 0.80). Strong correlations were observed between radiographic Cobb angles and TP-derived ultrasound curve angles (UCA) in mild-to-moderate curves (R2 &gt; 0.70), though correlations diminished in severe deformities (R2 &gt; 0.6). Mean scanning time measured 37.3 ± 6.8 s, with diagnostic-quality images obtained in 81 % of initial acquisitions. Multivariate regression analysis identified thoracic kyphosis magnitude (B = 3.334, p = 0.012) and vertebral rotation severity (B = 1.862–2.209, p &lt; 0.05) as significant predictors of measurement variability in thoracic and (thoraco) lumbar curves. The findings demonstrate that TP-based 3D ultrasound enables accurate radiation-free spinal assessments in mild-to-moderate AIS, with measurement accuracy significantly influenced by vertebral rotation and thoracic kyphosis severity. Despite reduced performance in complex deformities, the method demonstrates operational efficiency, diagnostic precision, and an enhanced safety profile, supporting its clinical utility as a screening alternative to conventional radiography.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107391"},"PeriodicalIF":8.7,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144117092","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":"Manipulation mechanisms of bubble aggregation and evolution in inertial cavitation fields","authors":"Rui Liu ,&nbsp;Jing Hu ,&nbsp;Yaorong Wu,&nbsp;Shi Chen,&nbsp;Chenghui Wang,&nbsp;Runyang Mo,&nbsp;Jianzhong Guo,&nbsp;Shuyu Lin","doi":"10.1016/j.ultsonch.2025.107384","DOIUrl":"10.1016/j.ultsonch.2025.107384","url":null,"abstract":"<div><div>Spherical bubble clusters was observed at 28 kHz and 40 kHz, and the evolution of the clusters was investigated. It was found that the cluster was dense when it located at the antinode of standing waves, while it became sparse when it deviates from the antinode, and the bifurcation of period doubling was observed in this nonlinear bubble system. In clusters, there exists complex fragmentation and coalescence, implying a bubble transportation cycle inside the clusters, which may enhance the interaction between the cluster and surrounding tiny bubbles. With the decreasing of acoustic pressure, the cluster spreads out gradually. A theoretical model is developed to explore the attractive effects of the cluster on surrounding bubbles, where the high hydrostatic pressure environments was considered, with the aim of providing a mechanism for the manipulation of cavitation field. It is very different by comparing the equilibrium radii distribution of the repulsive zone at 28 kHz and 600 kHz. At high hydrostatic pressure, it is possible to obtain a much denser cluster, which attracts bubbles within 2 mm of the surrounding region. As a result, it was found the key factors to affect the interactions are the ratio of acoustic pressure to hydrostatic pressure, hydrostatic pressure, and acoustic frequency. Our theoretical predictions can provide support for optimizing the cavitation behavior of bubble populations at high hydrostatic pressures.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107384"},"PeriodicalIF":8.7,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144090669","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 protrusion structure on the performance of an advanced hydrodynamic cavitation reactor: An entropy-based analysis","authors":"Gaoju Xia ,&nbsp;Sivakumar Manickam ,&nbsp;Jingwei Li ,&nbsp;Zhiqiang Yin ,&nbsp;Wenlong Wang ,&nbsp;Xun Sun","doi":"10.1016/j.ultsonch.2025.107392","DOIUrl":"10.1016/j.ultsonch.2025.107392","url":null,"abstract":"<div><div>Hydrodynamic cavitation (HC) has emerged as a promising technique for process intensification. Recently developed advanced rotational hydrodynamic cavitation reactors (ARHCRs) have attracted significant attention from both academia and industry due to their notable economic advantages, high processing capacity, and continuous operation in specific applications. However, existing evaluation and optimization criteria for these reactors primarily rely on external parameters, often overlooking the complex micro-scale properties and energy dissipation of internal flow within the cavitation generation unit (CGU) of ARHCRs. To address this, a “simplified flow field” computational flow dynamics (CFD) approach combined with entropy production theory was employed to assess the impact of protrusion installation upstream of the CGU on ARHCR performance. The cavitation volume and total entropy generation were analyzed for protrusions of various shapes, circumferential offset angles (<em>γ</em>), radial positions (<em>r</em>), and side lengths (<em>s</em>). The findings revealed that energy dissipation in ARHCRs is predominantly localized in regions of flow separation and vortex formation within the CGU. Furthermore, an evaluation of multiple design factors identified that a triangular protrusion with a <em>γ</em> of 3.75°, <em>r</em> of 122.5 mm, and <em>s</em> of 1 mm achieved optimal performance. Comparative analysis of the flow field and vortex structures between the triangular protrusion and the baseline model demonstrated that the protrusion modifies downstream vortex dynamics, stabilizes the clearance flow field, and reduces entropy production. Additionally, these flow field modifications expand the low-pressure region, thereby enhancing cavitation performance. In this study, the employed entropy production theory identified the spatial distribution of energy loss and the dominant energy dissipation pathways within the ARHCR, thereby revealing the underlying energy loss mechanism associated with vortex formation and flow separation. These insights contribute to a deeper understanding of energy efficiency in ARHCRs and offer a foundation for optimizing reactor design to minimize energy consumption and enhance process intensification.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107392"},"PeriodicalIF":8.7,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123930","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":"Comparing and combining methods that enhance liquid–gas mass transfer in a batch reactor: Ultrasonic degassing, aeration by gas bubbling, and liquid agitation","authors":"W. Ludwig Kuhn ,&nbsp;Jean-Yves Hihn ,&nbsp;Bjørn Winther Solemslie ,&nbsp;Ole Gunnar Dahlhaug","doi":"10.1016/j.ultsonch.2025.107389","DOIUrl":"10.1016/j.ultsonch.2025.107389","url":null,"abstract":"<div><div>The present study investigates methods to enhance liquid–gas mass transfer in total dissolved gas (TDG) supersaturated water. Using a two-part experimental setup, water is first supersaturated using air, followed by an evaluation of the influence of various operating parameters on the volumetric liquid–gas mass transfer coefficient, <span><math><mrow><msub><mi>k</mi><mi>L</mi></msub><mi>a</mi></mrow></math></span>, in a liquid batch reactor. The dependence of this coefficient on sonication parameters is significant because of high partial pressure gradients with TDG supersaturation. The tested methods to enhance degassing are: ultrasonic degassing, aeration by gas bubbling, and agitation through flow circulation. The influence of the acoustic frequency and power, the gas diffuser porosity and flow rate, and the flow direction and velocity within the reactor were the parameters investigated for the respective method. In addition, a combination of the different methods was conducted to evaluate promoting effects on the liquid–gas mass transfer. Applying high-power ultrasound resulted in the largest mass transfer enhancement overall, even though aeration and liquid agitation increase the mass transfer when compared to natural degassing. Only a combination of ultrasound and liquid agitation through countercurrent flow leads to a small further enhancement in the mass transfer. Combining aeration by gas bubbling and ultrasound hampers the sonication process, but yields higher <span><math><mrow><msub><mi>k</mi><mi>L</mi></msub><mi>a</mi></mrow></math></span> values compared to aeration alone. The results indicate that high-power ultrasound, in combination with selected parameters, presents a powerful approach for efficient degassing of TDG supersaturated water. In addition, practical insights for applications within other fields are provided.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107389"},"PeriodicalIF":8.7,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144123929","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":"Synergistic coupling of ultrasonic cavitation with tailored deep eutectic solvent systems for intensified extraction of Scutellaria Radix flavonoids: Modelling and optimization by genetic algorithm","authors":"Qi Cui ,&nbsp;Jia-Yi Shi ,&nbsp;Le-Le Wen ,&nbsp;Wei-Hua Kong,&nbsp;Li-Jie Jiang,&nbsp;Ju-Zhao Liu","doi":"10.1016/j.ultsonch.2025.107386","DOIUrl":"10.1016/j.ultsonch.2025.107386","url":null,"abstract":"<div><div>Deep eutectic solvents (DESs) are increasingly recognized as viable environmentally friendly alternatives to traditional organic solvents because of their low toxicity and exceptional dissolving capabilities. In this research, 12 DESs were synthesized and systematically integrated with ultrasonic-assisted extraction (UAE) to extract flavonoids from <em>Scutellaria Radix</em>. Comprehensive screening revealed that the optimal DES outperformed conventional solvents (water and 70 % ethanol) in extraction efficiency. Through statistical optimization, including single-factor experiments, response surface methodology, and an artificial neural network–genetic algorithm, we achieved remarkable extraction yields for six target flavonoids: scutellarin (3.88 ± 0.37), baicalin (137.67 ± 8.61), wogonoside (13.40 ± 0.58), baicalein (27.95 ± 1.12), wogonin (15.95 ± 1.48), and chrysin (1.81 ± 0.21 mg/g). These values represented significant improvements over conventional extraction methods. Subsequent enrichment processes yielded flavonoid recovery rates of 76.80–85.13 %, and demonstrated excellent DES recyclability over four consecutive extraction cycles. In sum, this work establishes a sustainable, high-efficiency platform for phytochemical extraction, offering substantial advances in sustainable natural product processing through intelligent solvent design and process optimization.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107386"},"PeriodicalIF":8.7,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084399","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":"High-speed imaging and coumarin dosimetry of horn type ultrasonic reactors: Influence of probe diameter and amplitude","authors":"Gianmaria Viciconte ,&nbsp;Varaha P. Sarvothaman ,&nbsp;Paolo Guida ,&nbsp;Tadd T. Truscott ,&nbsp;William L. Roberts","doi":"10.1016/j.ultsonch.2025.107362","DOIUrl":"10.1016/j.ultsonch.2025.107362","url":null,"abstract":"<div><div>Ultrasound driven cavitation is widely used to intensify lab and industrial-scale processes. Various studies and experiments demonstrate that the acoustic energy, dissipated through the bubbles collapse, leads to intense physico-chemical effects in the processed liquid. A better understanding of these phenomena is crucial for the optimization of ultrasonic reactors, and their scale-up. In the current literature, the visual characterization of the reactor is mainly carried out with sonoluminescence and sonochemiluminescence. These techniques have limitations in the time resolution since a high camera exposure time is required. In this research, we proposed an alternative method, based on coumarin dosimetry to monitor the hydroxylation activity, and high-speed imaging for the visualization of the vapor field. By this approach, we aim to capture the structure and the dynamics of the vapor field and to correlate this with the chemical effects induced in the ultrasonic reactor. This characterization was carried out for four different ultrasonic probe diameters (3, 7, 14 and 40 mm), displacement amplitudes and processing volumes. Key findings indicate that the probe diameter strongly affects the structure of the vapor field and the chemical effectiveness of the system. The proposed methodology could be applied to characterize other types of ultrasonic reactors with different operating and processing conditions.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107362"},"PeriodicalIF":8.7,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084400","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":"Deep eutectic solvent extraction of polysaccharides from Gastrodiae elata with ultrasonic and enzymes assistance: Process optimization, structure, and antioxidant activity","authors":"De Zhou ,&nbsp;Yunfei Hu ,&nbsp;Tianli Zhou ,&nbsp;Shoutao Peng ,&nbsp;Ren Li ,&nbsp;Jinsong He ,&nbsp;Ming Zhao ,&nbsp;Jinliang Shao ,&nbsp;Qingyan Tang","doi":"10.1016/j.ultsonch.2025.107383","DOIUrl":"10.1016/j.ultsonch.2025.107383","url":null,"abstract":"<div><div><em>Gastrodia elata</em> polysaccharides (GEPs) have garnered attention due to their various bioactivities; however, their current extraction yield is low, limiting widespread application. This study employed ultrasonic enzyme-assisted deep eutectic solvent (DES) extraction to enhance efficiency and compared the physicochemical properties, structure, and antioxidant activity of the polysaccharides with those obtained by traditional hot water extraction. Additionally, density functional theory (DFT) was used to explore the DES14 extraction mechanism. Results indicated that the extraction yield from the ultrasonic enzyme-assisted DES14 method (25.22 %) was 3.11 times higher than that of the hot water method (8.11 %), and the molecular weight was 0.21 times. Furthermore, the polysaccharides extracted by this method exhibited superior antioxidant activity, effectively reducing malondialdehyde and reactive oxygen species accumulation, while enhancing antioxidant enzyme activity to combat oxidative stress. Both polysaccharides were α-glucans linked by 4-O-D-Glcp without triple helical structures. DFT analysis demonstrated that the binding energy of DES14 with GEPs was significantly higher than with water, enhancing GEPs solubility through hydrogen bond network formation, thereby notably improving extraction yield. This study provides an efficient method for extracting natural plant polysaccharides and a theoretical basis for GEPs application in the food industry.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"119 ","pages":"Article 107383"},"PeriodicalIF":8.7,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144070192","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":"Ultrasonic bidirectional regulation of chrysophanol and aurantio-obtusin self-assembly enhanced nanofiltration separated ethanol extract of cassia seed","authors":"Cunyu Li ,&nbsp;Xin Shen ,&nbsp;Ranyun Qiu ,&nbsp;Dantong Xing ,&nbsp;Xinglei Zhi","doi":"10.1016/j.ultsonch.2025.107382","DOIUrl":"10.1016/j.ultsonch.2025.107382","url":null,"abstract":"<div><div>Anthraquinone components sublimate during heat treatment refining, causing equipment pipeline contamination and a drop in component output, which is a challenging technical problem for pharmaceutical manufacturers to resolve. Furthermore, the waste liquid generated during pipeline cleaning simultaneously increases production costs and pollutes the environment. Although nanofiltration has the technological advantage of traditional temperature refining, anthraquinone components are absorbed onto the membrane surface during the concentration of cassia seed ethanol extract, leading to membrane pollution and a significant decrease in separation efficiency. Based on the π-π stacking effect and ultrasonic cavitation effect of anthraquinone components, this study proposes the hypothesis of enhancing nanofiltration separation by ultrasonic regulation of the self-assembly of anthraquinone components. The effects of pH, ethanol concentration, ultrasonic power, and the molecular weight cut-off of nanofiltration membranes on the solute rejection and membrane flux were all systematically explored in this work. The separation processes of chrysophanol and aurantio-obtusin were clarified by combining the relationship between ultrasonic power and the existing state. It was discovered that the self-assembly behavior of chrysophanol and aurantio-obtusin was regulated bidirectionally by ultrasonic power. In the range of 100 W − 300 W, the proportion of molecular states of anthraquinone components drops as the particle size distribution of the solution increases. Ultrasound encouraged the π-π stacking effect among anthraquinones, resulting in self-assembly and reduced surface pollution under the cavitation effect, leading to efficient nanofiltration separation. Ultrasonic power showed a logarithmic correlation with the molecular proportion of anthraquinones components in 300 W − 700 W, and ultrasound promoted the breakage of hydrogen bonds between supramolecular structures, resulting in an increase in the molecular proportion and a decrease in solute rejection. The response surface method was used to optimize the separation parameters of ultrasonic-enhanced nanofiltration. Chrysophanol and aurantio-obtusin rejections in cassia seed extract with ethanol concentrations of 35 % − 65 % were both greater than 88 % and 91 %, respectively, as the separation volume increased from 2 L to 20 L. Based on the intermolecular forces of the anthraquinone components in various ethanol solutions, this study used an ultrasonic bidirectional self-assembly ratio to purify cassia seed extract at room temperature through ultrasonic-enhanced nanofiltration, thereby avoiding the problems of component sublimation and environmental contamination brought on by conventional concentration.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"118 ","pages":"Article 107382"},"PeriodicalIF":8.7,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935788","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":"Ca2+ sonotransfer into breast cancer cells in a suspension, 3-D spheroid and subcutaneous tumor models","authors":"Martynas Maciulevičius ,&nbsp;Reda Rulinskaitė ,&nbsp;Lukas Giedrimas ,&nbsp;Rūta Palepšienė ,&nbsp;Paulius Ruzgys ,&nbsp;Rytis Jurkonis ,&nbsp;Mindaugas Tamošiūnas ,&nbsp;Renaldas Raišutis ,&nbsp;Kristine Saleniece ,&nbsp;Saulius Šatkauskas","doi":"10.1016/j.ultsonch.2025.107381","DOIUrl":"10.1016/j.ultsonch.2025.107381","url":null,"abstract":"<div><div>Calcium-based treatments have gained considerable attention in the field of electroporation, primarily, due to their comparable efficacy to conventional electro-chemotherapy. However, their applications in sonoporation remain under-investigated, despite its high potential for site-specific and temporally-controlled drug delivery.</div><div>Current study examines the curative potential of calcium sonoporation across multiple experimental models, including: i) cell suspension, ii) 3-D spheroid culture and iii) subcutaneous murine breast cancer tumors. Murine breast cancer is an established analogue of stage IV human breast cancer. For comparison, parallel experiments, using classical anticancer drug bleomycin were performed.</div><div>Ca²⁺ sonoporation efficiently enhanced 4 T1 cell death in a suspension in the absence of microbubbles, under relatively low acoustic pressure (100–200 kPa). In contrast, efficient spheroid growth reduction required microbubble-mediated inertial cavitation at higher (700 kPa) acoustic pressure.</div><div><em>In vivo</em>, Ca²⁺ sonoporation demonstrated similar tumor growth reduction as bleomycin sonoporation. Both treatments reduced tumor growth from the third day after the onset of treatment. Successful cancer treatment was achieved even at lower values of cavitation dose metrics.</div><div>Our study presents a multi-level validation of Ca²⁺ sonoporation as an effective treatment strategy for murine breast cancer. Importantly, complete tumor eradication and prolonged animal survival up to one month were observed even at significantly reduced cavitation activity, indicating clinical safety of the treatment.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"118 ","pages":"Article 107381"},"PeriodicalIF":8.7,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143922067","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 synthesis of strontium-bismuth titanate and its application in environmental remediation","authors":"Ermelinda Falletta ,&nbsp;Anna Donnadio ,&nbsp;Nikoletta Mila ,&nbsp;Niloofar Haghshenas ,&nbsp;Vincenzo Fabbrizio ,&nbsp;Riccardo Vivani ,&nbsp;Alessia Giordana ,&nbsp;Gabriele Perna ,&nbsp;Francesco Cottone ,&nbsp;Alessandro Di Michele ,&nbsp;Claudia L. Bianchi","doi":"10.1016/j.ultsonch.2025.107380","DOIUrl":"10.1016/j.ultsonch.2025.107380","url":null,"abstract":"<div><div>The pollution of water and air in our world has become a global challenge that requires innovative and sustainable strategies. In this work, the ultrasound-assisted synthesis of bare strontium titanate (STO) and bismuth-doped STO (Bi-STO) is proposed to enhance the photocatalytic and piezocatalytic performance of STO in environmental remediation. The materials were fully characterized using various physicochemical techniques, such as XRD, XPS, BET, UV-DRS, PL, SEM, TEM, and piezoelectric measurements, to assess their structural, optical, morphological and piezoelectric properties. The results revealed that Bi-STO induced lattice distortion, reduced band gap energy, enhanced charge separation efficiency, and improved piezoelectricity respect STO.</div><div>The activity of the as-prepared materials was investigated in the field of wastewater remediation through three different approaches: photocatalysis, piezocatalysis, and piezo-photocatalysis, applied in the ibuprofen (IBU) degradation, as well as in the photocatalytic removal of volatile organic compounds (VOCs) and nitrogen oxides (NOx) under different irradiation conditions. The results demonstrated that Bi-STO exhibited superior catalytic performance respect STO, achieving up to 60% IBU degradation under piezo-photocatalysis, thanks to the synergy between light and ultrasound. Furthermore, Bi-STO enabled the complete removal of ethanol and NOx and more than 90% propionic acid reduction under UV irradiation.</div><div>This study demonstrates the potential of Bi-STO as an efficient catalyst for environmental remediation, offering an alternative to conventional materials. The present work opens new possibilities for optimizing and improving wastewater treatment and air purification.</div></div>","PeriodicalId":442,"journal":{"name":"Ultrasonics Sonochemistry","volume":"118 ","pages":"Article 107380"},"PeriodicalIF":8.7,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929254","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}