Advanced Powder Technology最新文献

Effect of manufacturing route on powder biomaterial Co–Cr–Mo–W dental implants: microstructural and environmental assessment 制备工艺对粉末生物材料Co-Cr-Mo-W种植体的影响：显微结构和环境评价

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-02-01 DOI: 10.1016/j.apt.2026.105186

Deepak Sharma , Sanjeev Kumar , Varun Sharma

Microwave sintering, a form of powder metallurgy, and direct metal laser sintering, an additive manufacturing technique, have enhanced the efficiency and sustainability of processing CoCrMoW alloy powder biomaterials used in dental applications. This work examines the microstructural, mechanical, corrosion, and sustainability performance of CoCrMoW dental implants fabricated through two distinct routes. Dental implants fabricated with the direct rapid tooling route exhibited a fully melted, dense microstructure with smooth surfaces and low porosity (3.02%), which enhanced densification, reduced oxidation, and increased crystallinity. On the other hand, dental implants fabricated through the indirect rapid tooling route showed rougher surfaces and higher porosity (38.19%), as well as higher hardness due to the formation of an amorphous phase and oxide dispersion strengthening. Additionally, they exhibited improved corrosion resistance due to the formation of an effective protective oxide film. The direct rapid tooling route demonstrated a significantly lower potential for global warming (0.34 kg CO₂ eq) and fewer repercussions on ecosystems, human health, and resource depletion compared to indirect rapid tooling (19.53 kg CO₂ eq). This study has demonstrated that the direct rapid tooling approach offers a superior, more efficient, and environmentally responsible route for fabricating CoCrMoW alloy dental implants.

微波烧结是粉末冶金的一种形式，直接金属激光烧结是一种增材制造技术，提高了加工牙科用CoCrMoW合金粉末生物材料的效率和可持续性。本研究考察了通过两种不同途径制备的CoCrMoW牙种植体的显微结构、机械、腐蚀和可持续性性能。采用直接快速加工工艺制备的牙种植体具有完全熔化、致密的微观结构，表面光滑，孔隙率低（3.02%），增强了致密化，减少了氧化，提高了结晶度。另一方面，通过间接快速加工方法制备的种植体表面更粗糙，孔隙率更高（38.19%），由于非晶相的形成和氧化物弥散强化，硬度更高。此外，由于形成有效的氧化保护膜，它们表现出更好的耐腐蚀性。与间接快速加工（19.53 kg CO2当量）相比，直接快速加工路线对全球变暖的潜在影响显著降低（0.34 kg CO2当量），对生态系统、人类健康和资源枯竭的影响也更小。该研究表明，直接快速加工方法为制造CoCrMoW合金牙科种植体提供了一种更优越、更高效、更环保的途径。

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引用次数: 0

S-scheme TiO2@In2S3/MIL-101(Cr) composite for dual-function removal of polystyrene microplastics and tetracycline in water S-scheme TiO2@In2S3/MIL-101（Cr）复合材料双功能去除水中聚苯乙烯微塑料和四环素

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-02-01 DOI: 10.1016/j.apt.2026.105183

Xuan N. Pham , Hong Van T. Nguyen , Hoa T. Nguyen , Manh B. Nguyen , T.-Thanh-Bao Nguyen , Quang Vinh Tran , Huan V. Doan

The progressive contamination of aquatic environments by microplastics and pharmaceutical residues has emerged as a pressing environmental issue. In the present study, a novel S-scheme TiO₂@In₂S₃/MIL-101(Cr) heterojunction composite was synthesized and evaluated for its capacity to simultaneously eliminate polystyrene microplastics (PSMPs) and tetracycline (TC) from aqueous media. The TiO₂@In₂S₃/MIL-101(Cr) composite exhibited outstanding photocatalytic and adsorptive properties, achieving complete removal of PSMPs (500 mg L⁻1) within 90 min and 97% removal of TC (30 mg L⁻1) within 210 min under visible-light irradiation. In a binary pollutant system, the composite enabled full elimination of both PSMPs and TC within 240 min, with PSMPs reaching 100% removal at 180 min and TC at 240 min. The superior performance was attributed to enhanced charge carrier separation and the suppression of electron–hole recombination, facilitated by the engineered heterojunction structure. Reusability tests confirmed the material’s stability, with over 94% removal efficiency retained after four consecutive cycles. Moreover, adsorption experiments revealed a pronounced pH dependence, with optimal removal efficiency observed at pH 5. Collectively, these results highlight the dual functionality and robustness of TiO₂@In₂S₃/MIL-101(Cr), underscoring its potential as a promising candidate for large-scale water purification and environmental remediation applications.

微塑料和药物残留对水生环境的逐步污染已成为一个紧迫的环境问题。在本研究中，合成了一种新型S-scheme TiO2@In2S3/MIL-101（Cr）异质结复合材料，并评估了其同时从水介质中去除聚苯乙烯微塑料（PSMPs）和四环素（TC）的能力。TiO2@In2S3/MIL-101（Cr）复合材料表现出优异的光催化和吸附性能，在可见光照射下可在90 min内完全去除PSMPs (500 mg L−1)，在210 min内去除TC (30 mg L−1)97%。在二元污染物系统中，该复合材料能够在240分钟内完全消除PSMPs和TC，其中PSMPs在180分钟内达到100%去除，TC在240分钟内达到100%去除。这种优异的性能是由于工程异质结结构促进了载流子分离和抑制了电子-空穴复合。重复使用测试证实了材料的稳定性，在连续四次循环后，去除效率保持在94%以上。此外，吸附实验显示了明显的pH依赖性，在pH 5时观察到最佳的去除效率。总之，这些结果突出了TiO2@In2S3/MIL-101（Cr）的双重功能和稳健性，强调了其作为大规模水净化和环境修复应用的有希望的候选物的潜力。

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引用次数: 0

Mechanics, energy evolution and damage behavior of cemented waste rock-tailings backfill considering waste rock content and particle size distribution 考虑废石掺量和粒径分布的废石尾砂胶结充填体力学、能量演化及损伤行为

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-02-01 DOI: 10.1016/j.apt.2026.105181

Cuiping Li , Jun Wu , Chen Hu , Zhenhua Huang

In order to investigate the effects of waste rock content (WRC) and particle size distribution (PSD) on the energy storage and damage evolution of cement waste rock-tailing backfill (CWTB). The CWTB specimens with different PSD and WRC were prepared for uniaxial compression tests. The mechanical properties and energy evolution characteristics of CWTB were analyzed. A novel damage constitutive model considering the compaction stage and the post-peak stage was constructed, and the damage evolution law of CWTB was obtained. The results show that an increase in WRC decreases the energy storage limit of the specimen. In contrast, when the Talbot coefficient is increased, not only the energy storage limit is increased, but also the total energy of the elastic stage is converted more into elastic energy. The reduction of WRC and the increase of the Talbot coefficient help to suppress the conversion of elastic energy to dissipative energy, and the energy storage capacity of the specimen is significantly enhanced. A segmented damage constitutive model considering the compaction and post-peak stages was developed. The new constitutive model can better describe the stress–strain relationship and damage evolution law of backfill. The research results can provide assistance for the stability of the mine.

为了研究废石掺量（WRC）和粒径分布（PSD）对水泥废石尾砂充填体（CWTB）能量储存和损伤演化的影响。制备不同PSD和WRC的CWTB试件进行单轴压缩试验。分析了CWTB的力学性能和能量演化特性。建立了考虑压实阶段和峰后阶段的损伤本构模型，得到了CWTB的损伤演化规律。结果表明：随WRC的增大，试件的蓄能极限减小；而随着塔尔博特系数的增大，不仅储能极限增大，而且弹性阶段的总能量更多地转化为弹性能。WRC的减小和Talbot系数的增大有助于抑制弹性能向耗散能的转化，试件的储能能力显著增强。建立了考虑压实和峰后阶段的分段损伤本构模型。新的本构模型能较好地描述充填体的应力-应变关系和损伤演化规律。研究结果可为矿山的稳定提供辅助。

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引用次数: 0

Dual role of redox-active V2O5/CeO2 nanocomposite electrodes in high-performance supercapacitor and battery applications 氧化还原活性V2O5/CeO2纳米复合电极在高性能超级电容器和电池中的双重作用

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-23 DOI: 10.1016/j.apt.2026.105185

K. Sutharthani, S.S. Pradeepa, R. Suba Devi, M. Sivakumar

Electrochemical attributes of transition metal oxide hybrids are an active domain of research for energy storage applications. This study strives to explore the plausible performance of V₂O₅/CeO₂ nanocomposite in supercapacitor applications and their anode capabilities in Lithium-ion batteries (LIBs). Egg albumin is tapped as a bioreactor solvent for CeO₂ synthesis. Microstructural analysis confirmed the successful integration of CeO₂ into the V₂O₅ matrix, exhibiting a BET surface area of 32 m² g⁻¹ and excellent elemental homogeneity. Owing to their intriguing redox properties, the conjunction of V⁵⁺ and Ce⁴⁺ redox duos refines the diffusivity, thereby resulting in optimum performance in both applications. The discharge capacity of the V₂O₅/CeO₂ nanocomposite was quantified as 1146.57 mAh g⁻¹ at a current density of 0.1 A g⁻¹. After 100 cycles at 1 A g⁻¹, it retained 235.76 mAh g⁻¹, exhibiting an 82.8 % capacity retention. As a supercapacitor electrode, it demonstrated a specific capacitance of 1173.05 F g⁻¹ at 1 A g⁻¹. The cyclic stability of the nanocomposite was verified over 5000 cycles with capacity retention of 97.4 %. The cumulative dissection of the V₂O₅/CeO₂ nanocomposite showcased its strong potential in electrochemical applications.

过渡金属氧化物杂化材料的电化学性质是储能领域研究的热点。本研究旨在探索V2O5/CeO2纳米复合材料在超级电容器中的合理性能及其在锂离子电池（LIBs）中的负极性能。利用鸡蛋白蛋白作为生物反应器溶剂进行CeO2合成。显微结构分析证实CeO2成功地整合到V2O5基体中，表现出32 m2 g−1的BET表面积和良好的元素均匀性。由于其有趣的氧化还原特性，V5+和Ce4+氧化还原基团的结合改善了扩散率，从而在两种应用中都获得了最佳性能。在0.1 a g−1电流密度下，V2O5/CeO2纳米复合材料的放电容量为1146.57 mAh g−1。在1 A g−1下循环100次后，它保留了235.76 mAh g−1，容量保留率为82.8%。作为超级电容器电极，它在1ag−1时的比电容为1173.05 F g−1。经过5000次循环验证，纳米复合材料的容量保持率为97.4%。V2O5/CeO2纳米复合材料的累积解剖表明其具有很强的电化学应用潜力。

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引用次数: 0

Fish-hook effect in hydrocyclones: systematic refutation of the measurement artifact hypothesis 水力旋流器中的鱼钩效应：对测量伪影假说的系统反驳

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-23 DOI: 10.1016/j.apt.2026.105184

M.H. Tyeb , A. Asrar , A.K. Majumder

The fish-hook effect observed in hydrocyclone partition curves has been debated extensively, with contention over whether it arises out of inherent process dynamics or laser diffraction measurement artifacts. This study addresses the debate through a methodically designed comparison of hydrocyclone, gravity settling, and wet screening separation processes, analyzed under identical laser diffraction protocols across systematically varied refractive index configurations. Wet screening, chosen specifically as a control due to its purely geometric separation mechanism that ideally precludes fish-hook formation, exhibited strictly monotonic partition curves without fish-hooks for all test cases. In contrast, consistent and reproducible fish-hook features were seen in both hydrocyclone and gravity settling partition curves across all tested refractive index configurations. These findings firmly established that fish-hooks in partition curves are consequences of genuine process-dependent phenomena, not measurement artifacts. Further analysis showed that real refractive index (RRI) specification critically affected particle size distribution (PSD) measurement, particularly when the specification error is towards the dispersant’s RRI, introducing bimodal artifacts in the PSD and marginally shifting separation cut sizes. Imaginary refractive index (IRI) variations altered ultrafine (<10 μm) characterization which modulated but did not eliminate fish-hooks in hydrocyclone partition curves.

在旋流器分配曲线中观察到的鱼钩效应一直存在广泛的争论，争论的焦点是它是由固有的过程动力学还是激光衍射测量伪影引起的。本研究通过系统设计的水力旋流器、重力沉降和湿法筛选分离过程的比较来解决这一争论，并在系统不同折射率配置的相同激光衍射协议下进行分析。湿筛，由于其纯粹的几何分离机制，理想地排除了鱼钩的形成，被特别选择作为对照，在所有测试用例中都显示出严格的单调分配曲线，没有鱼钩。相比之下，在所有测试的折射率配置中，在水力旋流器和重力沉降分配曲线中都可以看到一致和可重复的鱼钩特征。这些发现坚定地确立了分割曲线中的鱼钩是真正的过程依赖现象的结果，而不是测量的人工产物。进一步分析表明，真实折射率（RRI）规格严重影响粒径分布（PSD）的测量，特别是当规格误差接近分散剂的RRI时，PSD中会出现双峰伪影，分离切割尺寸也会发生轻微变化。虚折射率（IRI）的变化改变了超细（<10 μm）表征，调制了水力旋流器分配曲线中的鱼钩，但没有消除鱼钩。

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引用次数: 0

Microencapsulated phase-change materials for advanced anti-icing coatings 先进防冰涂料用微胶囊化相变材料

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-23 DOI: 10.1016/j.apt.2026.105180

Yongshun Huang , Ce Wang , Wen Li , Yong Zuo , Ping Che , Yongsheng Han

The ice formation on the wind turbine blade surface challenges the energy collection in the winter period. Hence, the anti-icing technique is highly required for energy collection in cold weather. Here, we report a solution to prevent ice formation by coating microencapsulated phase-change materials (MPCMs). In this study, melamine–formaldehyde microcapsules encapsulating n-tetradecane/n-hexadecane core mixtures were prepared via in-situ polymerization, enabling precise phase-change temperature regulation (−11.46°C to −0.47°C) through the composition tuning. Furthermore, these obtained MPCMs were compounded with polytetrafluoroethylene micropowder to fabricate a multifunctional coating. The composite coating not only maintains the temperature responsive property but also exhibits outstanding hydrophobicity (static contact angle 151.1°, sliding angle 5.2°). The coating keeps hydrophobicity (contact angle > 140°) even after 80 cycles of wear test. Compared with the uncoated blank surface, the coated surface delays the static icing time by 4.1-fold and 4.5-fold at −8°C and −15°C, respectively. Moreover, the coated surface exhibits self-cleaning capability requiring only trace amounts of water. This combination of MPCMs and superhydrophobic coating provides a promising approach to anti-icing for wind turbine blades.

在冬季，风力涡轮机叶片表面结冰对能量收集提出了挑战。因此，在寒冷天气下的能源收集对防冰技术有很高的要求。在这里，我们报告了一种通过涂层微胶囊相变材料（MPCMs）来防止冰形成的解决方案。本研究采用原位聚合法制备了包封正十四烷/正十六烷核心混合物的三聚氰胺甲醛微胶囊，通过组分调整实现了精确的相变温度调节（- 11.46°C至- 0.47°C）。此外，将得到的mpcm与聚四氟乙烯微粉复配制成多功能涂层。复合涂层不仅保持了温度响应性能，而且具有良好的疏水性（静接触角151.1°，滑动角5.2°）。经过80次循环磨损试验，涂层仍保持疏水性（接触角>； 140°）。与未涂覆的空白表面相比，涂覆后的空白表面在−8℃和−15℃时的静结冰时间分别延迟了4.1倍和4.5倍。此外，涂层表面表现出自清洁能力，只需要微量的水。这种mpcm和超疏水涂层的结合为风力涡轮机叶片的防冰提供了一种很有前途的方法。

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引用次数: 0

Comparison between acoustic oscillatory force and forces exerted on particles in a sound-assisted fluidized bed 声振力与声助流化床颗粒力的比较

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-22 DOI: 10.1016/j.apt.2026.105177

Xuan Xu , Gehang Xue , Jiashan Yang , Zihan Wang , Gansu Zhang , Zhi Zhang , Liang Dong

During sound-assisted gas–solid fluidization, the hydrodynamic behavior of solid particles is affected compared to an ordinary fluidized bed because the suspended/semi-suspended particles are subjected to periodic oscillating acoustic field forces. In this work, an acoustic field oscillatory force model in a fluidized bed was refined and theoretically analyzed, unveiling the relationship among various forces acting on particles. The obtained results showed that the ratios of drag, gravity, and buoyancy forces to the sound field force in the bed significantly decrease as the sound field energy increases. Meanwhile, these ratios gradually increase as sound waves propagate through the bed due to sound attenuation. However, the sound oscillatory force increases due to the sound reflection at the distributor, leading to a reduction in the force ratios. Acoustic excitation leads to a bed compaction phenomenon that impedes gas-phase flow within the bed, reducing the bubble rising velocity by up to 35%.

在声辅助气固流化过程中，与普通流化床相比，固体颗粒的流体动力学行为受到影响，因为悬浮/半悬浮颗粒受到周期性振荡声场力的影响。本文对流化床中的声场振荡力模型进行了改进和理论分析，揭示了作用在颗粒上的各种力之间的关系。结果表明，随着声场能量的增大，床层内阻力、重力和浮力与声场力的比值显著减小。同时，当声波在床层中传播时，由于声音衰减，这些比率逐渐增加。然而，由于分布器处的声反射，声振荡力增加，导致力比减小。声波激励导致床层压实现象，阻碍床层内气相流动，使气泡上升速度降低35%。

引用次数: 0

Numerical study on ignition of pulverized coal and biomass co-firing flames with detailed chemistry 煤粉与生物质共燃火焰点火的数值研究与详细化学

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-20 DOI: 10.1016/j.apt.2026.105176

Jiangkuan Xing, Ryoichi Kurose

In this study, two-dimensional point-particle direct numerical simulations are performed using detailed chemistry to investigate ignition behavior of pulverized coal and biomass co-firing (CBCF) flames. Two biomass blending ratios are considered with a pure coal flame calculated as a reference. The time scales associated with particle physics and reactions are carefully analyzed to elucidate the effect of blending ratio on flame ignition behavior. The results indicate that coal particles exhibit shorter dispersion and heating delays, longer devolatilization delay, and shorter homogeneous volatile ignition delay compared to biomass particles. Three stages, including inert mixing/heating, pre-ignition, and ignition/flame propagation, are identified with different physics dominating each stage. As the blending ratio increases, CBCF flames demonstrate shorter inert mixing/heating times but comparable pre-ignition times due to shorter devolatilization delay of biomass particles, as well as comparable homogeneous ignition delays of blends of coal and biomass volatile. Devolatilization behavior plays a dominant role in the ignition process, and biomass volatile contributes more significantly. Furthermore, the classical concept that ignition kernels occur near the “most-reactive mixture fraction (

Z_{MR}

)” under low scalar dissipation rate remains valid for the CBCF flames. The

Z_{MR}

value is strongly affected by the devolatilization behavior and increases with the blending ratio.

在本研究中，采用二维点粒子直接数值模拟方法研究了煤粉和生物质共烧（CBCF）火焰的点火行为。以计算的纯煤火焰为参考，考虑了两种生物质混合比。详细分析了与粒子物理和反应相关的时间尺度，阐明了混合比例对火焰着火行为的影响。结果表明，与生物质颗粒相比，煤颗粒具有更短的分散和加热延迟、更长的脱挥发延迟和更短的均匀挥发性着火延迟。三个阶段，包括惰性混合/加热，预点火和点火/火焰传播，确定不同的物理控制每个阶段。随着混合比例的增加，CBCF火焰表现出较短的惰性混合/加热时间，但由于生物质颗粒的脱挥发延迟较短，以及煤和生物质挥发物混合物的均匀点火延迟相当。脱挥发行为在点火过程中起主导作用，生物质挥发性贡献更显著。此外，在低标量耗散率下，燃烧核发生在“最活跃混合分数（ZMR）”附近的经典概念仍然适用于CBCF火焰。ZMR值受脱挥发行为的影响较大，随掺合比的增大而增大。

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引用次数: 0

Novel eccentric-pelletisation for rifampicin agglomerates: Process optimization and high-dose pulmonary delivery 利福平凝聚体的新型偏心颗粒化：工艺优化和大剂量肺给药

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-19 DOI: 10.1016/j.apt.2026.105178

Jianhui Liu , Hang Zhou , Jiale Chen , Ying Ma , Shuangxi Shao , Honglei Zhang , Xiang Luo , Kaiqi Shi , Chongjiang Cao , Jesse Zhu , Dechun Huang

High-dose inhaled therapy offers a promising approach for respiratory infections, requiring efficient particle engineering. While fine particles from the milling process improved lung deposition, their poor flowability and high cohesion posed significant challenges for handling and dosing. In this study, a novel eccentric-pelletisation machine was developed to transform purely fine rifampicin powders into spherical agglomerates, significantly improving their flowability, dispersibility, and handling properties. Key manufacturing parameters − including relative humidity (60–70%), eccentric speed (240 rpm), eccentric time (20 min), and sieve size (400 µm) − were systematically optimized using an L₉(3⁴) orthogonal design. The optimized rifampicin agglomerates exhibited favorable properties, including bulk density (∼0.35 g/cm³), flow rate (∼0.59 g/s), roundness (∼0.92), yield (∼89.68%), and fine particle fraction/mass (>55%/5 mg), ensuring efficient high-dose delivery. Furthermore, the optimized agglomerates from three batches demonstrated excellent reproducibility of aerodynamic and physical properties. This study highlights the potential of the eccentric-pellestisation machine as a robust and scalable platform for producing inhalable rifampicin formulations, providing a foundation for industrial production and clinical applications for respiratory infections.

高剂量吸入治疗为呼吸道感染提供了一种很有前途的方法，但需要有效的粒子工程。虽然研磨过程中产生的细颗粒改善了肺沉积，但它们的流动性差和高凝聚力给处理和给药带来了重大挑战。在这项研究中，开发了一种新型的偏心制粒机，将纯利福平粉末转化为球形团块，显著提高了它们的流动性、分散性和处理性能。关键的制造参数-包括相对湿度（60-70%），偏心转速（240 rpm），偏心时间（20分钟）和筛尺寸（400µm） -使用L9（34）正交设计进行系统优化。优化后的利福平团聚体具有良好的性能，包括堆积密度（~ 0.35 g/cm3）、流速（~ 0.59 g/s）、圆度（~ 0.92）、收率（~ 89.68%）和细颗粒分数/质量（>55%/ 5mg），确保了高效的高剂量递送。此外，三批优化后的团聚体表现出良好的空气动力学和物理性能的再现性。这项研究强调了离心吸药机作为生产可吸入利福平制剂的强大且可扩展的平台的潜力，为呼吸道感染的工业生产和临床应用提供了基础。

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引用次数: 0

Eco-friendly Typha latifolia gold quantum dots with microfluidic-boosted antimicrobial and antioxidant performance 生态友好型Typha latifolia金量子点与微流体增强抗菌和抗氧化性能

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-17 DOI: 10.1016/j.apt.2025.105161

Kimia Torabi , Fateme Aghamir , Zinab Moradi Alvand , Ghasem Eghlima

This study introduces a sustainable and green approach for synthesizing gold quantum dots (Au QDs) using an ultrasound–assisted method with Typha latifolia leaf extract serving as both the reducing and stabilizing agent. Optimization via Box–Behnken design yielded monodisperse nanoparticles with high crystallinity and a predominantly spherical morphology, exhibiting an average diameter of 6.8 ± 4.7 nm. Spectroscopic and microscopic analyses (XRD, UV–Vis, DLS, FTIR, TEM) confirmed successful formation and surface functionalization of the Au QDs. Antibacterial assessments revealed that the Au QDs achieved complete inhibition of Bacillus subtilis and Escherichia coli at MIC values of 0.20 and 0.40 mg/mL, representing a fold improvement over the crude extract. Integration with a microfluidic platform accelerated bactericidal action, enabling rapid detection of potassium ion leakage (1.57 ± 0.09 ppm for B. subtilis, 1.34 ± 0.06 ppm for E. coli) within 30 min—approximately 50 % faster than conventional assays. Antioxidant performance improved markedly, with DPPH, ABTS, and NO scavenging activities increasing by 28–46 % relative to the extract. Biosafety evaluations using Allium cepa, Artemia urmiana, and MTT assays indicated negligible cytotoxicity and genotoxicity across tested concentrations. Collectively, these results demonstrate that T. latifolia–derived Au QDs possess strong antimicrobial and antioxidant activities, rapid microfluidic–enabled responsiveness, and excellent biosafety, establishing them as promising candidates for translational biomedical and environmental applications.

本文介绍了一种可持续、绿色的超声辅助合成金量子点（Au QDs）的方法，该方法以蓖麻叶提取物为还原剂和稳定剂。通过Box-Behnken设计优化得到了高结晶度的单分散纳米颗粒，其平均直径为6.8±4.7 nm。光谱和微观分析（XRD, UV-Vis， DLS， FTIR， TEM）证实了Au量子点的成功形成和表面功能化。抑菌试验结果表明，在MIC值分别为0.20和0.40 mg/mL时，Au QDs对枯草芽孢杆菌和大肠杆菌具有完全抑制作用，比粗提物提高了1倍。与微流控平台的集成加速了杀菌作用，能够在30分钟内快速检测到钾离子泄漏（枯草芽孢杆菌为1.57±0.09 ppm，大肠杆菌为1.34±0.06 ppm），比常规检测快了约50%。抗氧化性能显著提高，DPPH、ABTS和NO清除活性较提取物提高28 - 46%。使用葱、青蒿和MTT测定的生物安全性评价表明，在不同的测试浓度下，细胞毒性和遗传毒性可以忽略不计。综上所述，这些研究结果表明，金针叶衍生的金量子点具有很强的抗菌和抗氧化活性，快速的微流体响应能力，以及出色的生物安全性，使其成为转化生物医学和环境应用的有希望的候选者。

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引用次数: 0