Current Microwave Chemistry
·
2020
·Vol. 7
·期 3
·216-221
·
IF 0
Li Mengmeng,Huang Shuang,Zhang Hang,Wang Lei,Zhong Shengliang
Background: Researchers have pursued the new synthesis method. As a newly developed method, microwave (MW), ultrasound (US) and ultraviolet light (UV) assisted synthesis has drawn increasing interests. Under the synergistic effect, many materials with new structure, morphology and properties
may be found. As an important rare-earth phosphate, DyPO4 was selected and the effect of MW, US and UV on the preparation was investigated. Methods: The DyPO4·1.5H2O nanostructures were prepared by MW, US, UV and their combination. Results: Hexagonal DyPO4·1.5H2O
microcrystals obtained under MW irradiation were broomstick bundles. Needle-shaped products were formed in the presence of MW and US. Interestingly, the broom-sheaf-like structures can self-assemble into flower-shaped structures upon the irradiation of MW and UV. Whereas, MW/UV/US synergetic
heating results in mixed morphologies of flower-like and needle-shaped structures. Conclusion: The growth of DyPO4 nanostructures can be tuned by selecting the combination of heating method of MW, US and UV.
研究领域:
材料科学
·
化学合成
✓ 已验证
DOI
ACS Applied Nano Materials
·
2025
·
IF 5.5
Lei Sun,Weijie Yang,Shangyu Xie,Xiaowen Xi,Anqi Song,Guolin Li,Jie Wei,Jun Zhao
The creation of a piezoelectric nanozyme with a piezoelectric effect coupled with nanozyme activity to eradicate bacteria and facilitate osteoblast response is a novel strategy for the repair of infected bone defects. Herein, iridium-doped bismuth ferrite nanoparticles (IBFO) with improved piezoelectricity and multiple enzyme-like activities were prepared via the sol–gel method. Triggered by ultrasound (US), the piezoelectric effect of IBFO boosted the separation of electron/hole pairs and accelerated electron transfer that enhanced sonodynamic efficiency and enzyme-like activities. Moreover, a reactive oxygen species (ROS)-responsive sodium alginate-based piezoelectric hydrogel containing IBFO nanoparticles was prepared (IBFO-SAPS). In simulating a bacterial infection microenvironment (pH = 5.5) triggered by US (power > 0.5 W/cm2), IBFO-SAPS demonstrated remarkable antibacterial efficacy via the combination of piezoelectrically enhanced sonodynamic efficiency and peroxide (POD)-like activity that generated a large amount of ROS for collaborative eradication of bacteria. In simulating a physiological microenvironment (pH 7.4), under US (≤0.5 W/cm2) the piezoelectric effect of IBFO-SAPS improved the catalase (CAT)-like activity for scavenging intracellular ROS and generating oxygen, which provided a favorable microenvironment for cell growth due to the alleviation of oxidative stress and hypoxia. Moreover, the electrical stimulation generated by the piezoelectric effect of IBFO-SAPS boosted osteoblast proliferation and differentiation. The developed hydrogel significantly rooted out bacteria and facilitated osteoblast response through the piezoelectric effect, enhancing sonodynamic efficiency and nanozyme activity. This study provided a new strategy to design anti-infective biomaterials for the treatment of infected bone defects.
研究领域:
生物材料学
·
医学工程
·
组织工程
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Sadaqat Ali,Haobo Jin,Yaqin Yang,Yuanyuan Zhang,Yanli Wang,Erjiao Li,Xiang Fan,Yanbin Song,Yunxin Sun,Zhaoxia Cai,Long Sheng
The capacity of liquid egg white (LEW) to generate foam has become crucial in food processing. This study investigated the impact of ultrasound (US) and pectin in regulating the foaming properties and baking applications of LEW. Results showed that US treatment combined with pectin significantly ( P < 0.05) improved foam ability (FA) from 142 ± 3.464 % to 236 ± 2.65 % and foam stability (FS) from 33.32 ± 2.63 % to 60.4 ± 1.82 %. The lowest surface tension achieved was 44.691 mN/m for EW600 + 1 % P. High-intensity US and pectin also enhanced the ξ-potential, solubility, and surface hydrophobicity. Dynamic rheological analysis indicated increased in apparent viscosity and viscoelasticity. Furthermore, increasing US power led to significant turbidity enhancements, rising from 41.22 ± 0.093 % to 96.30 ± 0.026 % ( P < 0.05). Importantly, angel cakes made from US-treated LEW with pectin showed a higher specific volume, with EW600 + 1 % P reaching 3.2297 ± 0.017 mL/g compared to 2.9258 ± 0.022 mL/g for the control ( P < 0.05). These findings suggest that US and pectin enhance foaming rates and baking performance, addressing reduced FS in egg whites (EW) and angel cakes when different US treatments were applied alone.
研究领域:
食品科学
·
生物化学
✓ 已验证
DOI
PubMed
高影响因子
Materials Today Bio
·
2025
·
IF 10.2
Jialu Zhang,Xiaoxuan Wang,Lu Guo,Shan Xiao,Dong Meng,Mengmeng Shang,Xiao Sun,Dandan Shi,Yading Zhao,Rui Liu,Shuting Huang,Xinyu Zeng,Jie Li
PARP inhibitor (PARPi)-based synthetic lethal therapies have displayed limited benefits in BRCA-proficient ovarian cancer. To potentiate the application of PARPi, an ultrasound contrast agent OLA-NDs for delivery of the PARPi olaparib (OLA) was established for enhancing DNA damage by blocking DNA repair. OLA-NDs were endowed with endogenous pH- and exogenous ultrasound (US)-responsiveness to target tumors, as well as contrast-enhanced US imaging for diagnostic and therapeutic integration. OLA-NDs could upregulate NOX4 to induce oxidative stress and sensitize BRCA wild-type A2780 cells to DNA oxidative damage through the utilization of ultrasound-targeted microbubble destruction (UTMD). In addition, the strategy further increased ROS production by interfering with mitochondrial function, thereby exacerbating DNA double-strand breaks (DSBs) and inducing mitochondria-mediated apoptosis. As a consequence, the combined application of UTMD and OLA-NDs demonstrated significant antitumor effects in vitro and in vivo . This combined strategy of amplifying oxidative damage improved lethality by promoting DNA DSBs and apoptosis with reduced adverse side effects, which would provide new insight for the clinical application of PARPi in BRCA-proficient ovarian cancer.
研究领域:
肿瘤学
·
药理学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Xiaoyu Lei,Yangxue Yao,Fuhua Sun,Qing Zhao,Bo Mu,Yuping Li,Qingda Du,Jinlun Feng,Dongyu Huang,Jidong Li,Yubao Li,Yi Zuo
When severe defects bone occur, limited mobility in patients is accompanied by delayed signal transmission and osteogenesis. A sonodynamic therapy based on ultrasound-driven piezoelectric scaffolds is designed to restore cellular connections for regeneration. A series of 3D-printed scaffolds are fabricated using different polyurethane-based composites (hydroxyapatite/BaTiO 3 ) and further polarized to achieve a high piezoelectric constant. Driven by low-intensity pulsed ultrasound (LIPUS), the electrical signals from polarized scaffolds are optimized, achieving an increased open-circuit voltage (197 mV) due to the interconnected piezoelectric phase. The ultrasound-driven piezoelectric cues elevated the cytosolic and mitochondrial calcium levels in bone marrow mesenchymal stem cells (BMSCs), where calcium ions acted as a key second messenger, fortifying mitochondrial energy metabolism and exciting cellular activity. After applying the sonodynamic therapy to rat skull defects, the calcium signaling pathway, oxidative phosphorylation, and citrate cycle are actuated in the energy metabolism through functioning networks, while the HIF-1 signaling pathway on angiogenesis, and the AMPK and MAPK signaling pathways on osteogenesis collectively improved. The optimized sonodynamic therapy facilitated ≈27.85% osteogenesis (8 W) with early neovascularization (4 W) in the defects. Given the high efficiency of the piezoelectric-transducing network, the sonodynamic therapy offers a sustained mitochondria-excited treatment to maintain bone viability.
研究领域:
生物医学工程
·
再生医学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Chen Yang,Xijun Xu,Wajid Ali,Yaojin Wang,Yiping Wang,Ying Yang,Lang Chen,Guoliang Yuan
Ultrasonic sensors are widely applied in industries near room temperature; however, their application at high temperature is still a challenge mainly due to the lack of high-performance piezoelectric ceramics. Here, the 0.364BiScO3–0.636PbTiO3–0.005CaTiO3 ceramic exhibits excellent piezoelectric performances at 20–440 °C. Its piezoelectric coefficient d33 increases from 475 pC/N at 20 °C to 853 pC/N at 360 °C, and then it gradually decreases to 669 pC/N at 440 °C. Furthermore, the planar electromechanical coupling factor kp gradually increases from 0.59 at 20 °C to 0.67 at 200 °C, and then it remains at a stable value of 0.65–0.67 at 150–350 °C. These achievements are because the ceramic morphotropic phase boundaries have a flat Gibbs free energy versus polarization curve and a wide temperature range. Since the piezoelectric ceramic shows satisfactory piezoelectric properties at 20–440 °C, the corresponding ultrasonic sensors can in situ monitor many high-temperature devices, such as engines, wheels, drills, boilers, etc.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2021
·
IF 9.642
Bing Guo,Jiawei Hu,Jingsi Zhang,Zhigen Wu,Zhuo Li
This study explored the effect of potassium ferrate (PF) combined with ultrasound (US) pretreatment on methane generation from sludge by a series of experiments and simulations. Batch experiments showed that the pretreatment of PF coupled with US exhibited positively synergy on the methane yield. And by the pretreatment of 0.05 g/g TSS (total suspended solids) PF cooperated with US (1 W/mL, 25 kHz, 15 min), the methane yield was enhanced from 180.62 ± 3.26 to 228.83 ± 4.76 mL/g VSS (volatile suspended solids). Mechanism studies confirmed that the co-pretreatment of PF and US efficiently promoted sludge disintegration, and the biodegradability of sludge organics was obviously enhanced. Microbial community analysis showed that the functional microorganisms participating in sludge anaerobic digestion were enriched by PF cooperated with US pretreatment, with the total abundance enhanced from 12.96% in the control to 17.96% in PF + US pretreated reactor.
研究领域:
环境科学
·
微生物学
✓ 已验证
DOI
PubMed
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
·
2016
·Vol. 42
·期 10
·7345-7358
·
IF 1.833
Wang Ruikun,Zhao Zhenghui,Liu Jianzhong,Lv Yukun,Ye Xuemin
Municipal wastewater sludge (hereafter, sludge) is economically recycled by mixing with coal to prepare slurry fuels, called coal sludge slurry (CSS). However, raw sludge needs to be pretreated before being prepared as CSS because of its high viscosity. Alkali and ultrasonication pretreatment can effectively disrupt the sludge flocs and improve slurrying performance. The alkali pretreatment method takes a long time but has a low cost, whereas the ultrasonication pretreatment method needs a high energy input but takes a short time. This study combined these two methods with complementary advantages to reduce the sludge pretreatment time and ultrasonication energy demand to improve the slurrying performance for sludge. Results showed that, compared with only alkali and only ultrasonication, the combined alkali and ultrasonication pretreatment method had stronger effects on reducing slurry viscosity. The characteristic viscosity η
c of CSS prepared by raw sludge was 1663.60 mPa s. It was reduced to 1033.44 and 1472.10 mPa s, respectively, after the sludge was only pretreated by NaOH and Ca(OH) 2 at a dosage of 10 % dry sludge (DS) for 2 h, while it was reduced to 1205.43 mPa s after the sludge was only pretreated by ultrasonication of 30 kJ/g DS. After combined pretreatment, η
c of CSS was reduced to 774.98 mPa s (NaOH of 10 % DS for 2 h + ultrasonication of 30 kJ/g DS) and 1083.24 mPa s (Ca(OH) 2 of 10 % DS for 2 h + ultrasonication of 30 kJ/g DS), respectively. Apparently, the combined method can effectively decrease the alkali dosage or the ultrasonication energy input.
研究领域:
环境科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Ping Ouyang,Rui Zhang,Jian Zhou,Haiyan Liu,Zhichang Liu,Chunming Xu,Xiangping Zhang,Shaojuan Zeng,Qian Su,Xianghai Meng
Critical processing protocols of industrial bimetallic composite ionic liquid (IL) are necessary to assure good mass transfer rates for process optimization and efficient metal recovery. Here, the effects of different conditions on the electrochemical behavior and copper recovery from the industrial bimetallic composite IL are crucial for effective resource utilization. Cyclic voltammetry (CV) shows that the reduction of Cu(I) to Cu(0) during the cathodic reduction region is the irreversible diffusion-controlled process, and the diffusion coefficient increased with temperature which indicated that increasing temperature could promote the diffusion and mass transfer. During electrodeposition, metallic copper is obtained exclusively on the cathode, while CuCl2 accumulates exclusively on the anode. Scanning electron microscopy shows that the micron-size electrodeposits become larger and significantly rougher with increasing temperature and ultrasonic frequency, illustrating that these factors hasten the nucleation and crystallization rates at high overpotentials. The efficiency of copper recovery is greatly improved by employing high temperature and ultrasonic cavitation, and the highest values correspond to r = 76.9% at 80 °C and r = 63.6% at 40 kHz. The study lays the foundation for efficient and rapid recovery of copper from spent ILs.
研究领域:
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 53
·期 4
·2484-2496
·
IF 2.599
Zhang Kang,Zhang Xiaohua,Li Hengxiang,Xing Xiaohan,Jin Li’e,Cao Qing,Li Ping
Large-scale production of high-quality graphene is very critical for practical applications of graphene materials and devices. Exfoliation of graphite in an aqueous solution of surfactants is one of the most promising approaches to produce graphene. In this study, a novel anionic surfactant [sulfonated used engine oil (SUEO)], which was prepared from used engine oil, was employed to exfoliate the graphite nanoplatelets into graphene sheets in an aqueous solution under sonication to form a stable dispersion. The efficiency of SUEO for exfoliating and dispersing graphene was investigated and compared with that of traditional surfactants, such as sodium dodecyl sulfate, sodium dodecyl benzene sulfate, cetyl trimethyl ammonium bromide, and polyvinylpyrrolidone. Result showed that the graphene dispersion with excellent stability had a higher concentration (0.477 mg/mL) than others at 0.5 g/L optimal SUEO dosage in 4 h sonication time. The superior performance of SUEO can be attributed to its special molecular structures, whose hydrophobic moieties contain cycloalkanes/aromatics with different molecular weights and/or side chain –R with different lengths. Structural diversities are very helpful to the “jigsaw-puzzle” process on the graphene surface, where the total interfacial energy of the mixture system was minimized. Microscopic (SEM, TEM, and AFM) and spectroscopic (XRD, XPS, and Raman) measurements revealed that the dispersion consisted of few-layer graphene sheets with lower levels of defects or oxidation. This study presents a new class of dispersing agents for graphene that assists in the exfoliation process in water with high concentration and the stabilization of the graphene sheets against reaggregation.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Ruoming Tong,Pengshuang Zhang,Yaoqi Yang,Ruiyuan Zhang,Xuhui Sun,Xingmao Ma,Virender K. Sharma
This paper presents a new process to synthesize ferrate(VI) (Fe VI O 4 −2 ) continuously through the oxidation of ferric ion (Fe 3+) by hypochlorite (OCl - ) under alkaline condition. Synthesis was performed under different experimental conditions ([OH - ] = 5.0 – 16.0 M, and T = 20 – 45 °C) to obtain optimum yield of ferrate(VI). Under the most favorable condition (i.e., ([Fe 3+ ] = 0.10 M, [OCl - ]: [Fe 3+ ] = 10.0, [OH - ] = 10.0 M, and T = 40 °C), the yield of ferrate(VI) in the newly designed reactor increased by about 11% in 60 min compared to conventional reactor (or increased in [FeO 4 2- ] from 4.0 × 10 −2 M to 4.5 × 10 −2 M). The rapid mixing under flow condition in the closed coil of the new reactor improved the reaction efficiency and yield. When [Fe 3+ ] was varied in the range from 0.10 to 0.20 M in the reactor under the same condition, the optimum concentration of Fe 3+ was at 0.16 M, which increased the concentration of FeO 4 2- to 6.8 × 10 −2 M. Applying ultrasound power density (5.0–25.0 W/L) in the reaction process further increased the yield by about 12% (or increased [FeO 4 2- ] from 6.8 × 10 −2 M without ultrasound to 7.6 × 10 −2 M at 15.0 W/L). Overall, operating the newly designed reactor under ultrasound could increase the concentration of synthesized ferrate(VI) from 4.0 × 10 −2 M to 7.6 × 10 −2 M. At pH 7.0, the prepared ferrate(VI) completely removed atrazine (ATZ), sulfachloropyridazine (SCP), ibuprofen (IBP), and naproxen (NAP)) in water.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Chemical Engineering and Processing-Process Intensification
·
2020
·
IF 3.731
Jingwei Yan,Yu Zhao,Keying Li,Huimin Zhang,Liwei Fan,Zexiang Lu
A novel approach was developed for producing biodiesel by acid ionic liquid catalyzed esterification of oleic acid and methanol under ultrasonic-microwave combined intensification. Four kinds of acid ionic liquids were synthesized as suitable catalysts. Some key parameters affecting oleic acid conversion were investigated using single factor experiments. Moreover, the production process was optimized via response surface methodology. The results indicated that the ionic liquid 1-(4-sulfobutyl)-3-methylmidazolium hydrosulfate exhibits good catalytic performance because of its double acid sites. The ultrasonic-microwave combined assistance can intensify the process to significantly shorten the reaction time from about 180 min to 15 min, thereby affording good industrial application potential. The specified regression model is accurate, reliable, and adequate for simulating actual production; the oleic acid conversion was 97.85 %, which is close to that achieved with conventional methods.
研究领域:
化学工程
·
可再生能源
·
催化科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）