Advanced Powder Technology最新文献

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Tunable microwave absorption of NiMn-C core–shell nanoparticles via Ni/Mn atomic ratio control 通过Ni/Mn原子比控制NiMn-C核壳纳米粒子的可调微波吸收

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-01 Epub Date: 2025-12-23 DOI: 10.1016/j.apt.2025.105153

Xiaogang Sun , Yiming Yang , Pengxing Huang , Daitao Kuang , Xiang Li , Xiang Zhang , Xiaomin Peng , Qian Tang , Yi Chen , Zhonghua Huang

Core-shell nanostructures combining magnetic metals with carbon matrices have emerged as promising candidates for high-performance microwave absorption. In this work, we report the facile synthesis of NiMn-C core–shell nanoparticles via a one-step metal–organic chemical vapor deposition method, which enables precise tuning of the Ni/Mn atomic ratio. The as-synthesized nanoparticles, with an average diameter of ∼11 nm, exhibit improved microwave absorption properties, including a minimum reflection loss of −35.5 dB and a broad effective absorption bandwidth of 6.0 GHz at a thin thickness of 2.0 mm. Full-wave radar cross-section simulations, conducted using CST Microwave Studio, further confirm the material’s superior microwave scattering suppression, underscoring its practical stealth utility. Moreover, the NiMn-C absorber maintains its wide effective absorption bandwidth under conditions of low filler loading (16.7 wt%) and lightweight design, demonstrating its potential for electromagnetic interference (EMI) shielding and radar-absorbing applications. This study provides a viable strategy for designing efficient, lightweight microwave absorbers with tunable compositions.

磁性金属与碳基体结合的核壳纳米结构已成为高性能微波吸收的有希望的候选者。在这项工作中，我们报告了通过一步金属有机化学气相沉积方法轻松合成NiMn-C核壳纳米粒子，该方法可以精确调节Ni/Mn原子比。合成的纳米颗粒平均直径为~ 11 nm，具有较好的微波吸收性能，包括最小反射损耗为- 35.5 dB，有效吸收带宽为6.0 GHz，薄厚度为2.0 mm。利用CST Microwave Studio进行的全波雷达截面模拟进一步证实了该材料优越的微波散射抑制能力，强调了其实际的隐身效用。此外，NiMn-C吸收体在低填充载荷（16.7 wt%）和轻量化设计的条件下保持了较宽的有效吸收带宽，显示了其在电磁干扰（EMI）屏蔽和雷达吸收应用方面的潜力。本研究为设计具有可调成分的高效、轻量化微波吸收器提供了可行的策略。

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引用次数: 0

Corrigendum to “Effect of milling time on structural, physical and tribological behavior of a newly developed Ti-Nb-Zr alloy for biomedical applications”. [Adv. Powder Technol. 35(1) (2024) 104306] “铣削时间对新开发的生物医学用Ti-Nb-Zr合金的结构、物理和摩擦学性能的影响”的勘误表。[Adv.粉末技术，35(1)(2024)104306]

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-01 Epub Date: 2025-12-13 DOI: 10.1016/j.apt.2025.105147

Fouzia Hamadi , Mamoun Fellah , Naouel Hezil , Dikra Bouras , Salah Eddine Laouini , Alex montagne , Hamiden Abd El-Wahed Khalifa , Aleksei Obrosov , Gamal A. El-Hiti , Krishna Kumar Yadav

引用次数: 0

Amorphous to crystalline phase transition in iron oxide nanoparticles prepared by Aloe vera assisted green synthesis 芦荟辅助绿色合成制备的氧化铁纳米颗粒的非晶晶相变

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-01 Epub Date: 2025-12-24 DOI: 10.1016/j.apt.2025.105154

Vincenzina Strano , Vanna Torrisi , Simona Boninelli , Maria Miritello

Iron oxide nanostructures synthesized through green methods have gained significant attention due to their eco-friendly nature, low cost and the possibility to avoid toxic reagents. In this work, we present the green synthesis of Fe₂O₃ nanoparticles (NPs) using Aloe-vera leaf extract as a natural reducing and stabilizing agent. The as-prepared nanostructures exhibit an amorphous nature, which evolves into a crystalline structure upon thermal annealing. The detailed structural and spectroscopic analyses reveal the coexistence of two iron oxide phases, maghemite (γ-Fe₂O₃) and hematite (α-Fe₂O₃), providing valuable insights for the development of strategies to tune the properties of iron oxide nanomaterials for targeted applications. In particular, the crystalline NPs were evaluated as photothermal agents for potential use in light-driven therapeutic applications.

通过绿色方法合成的氧化铁纳米结构因其环保、低成本和可以避免使用有毒试剂而受到广泛关注。在这项工作中，我们提出了绿色合成Fe2O3纳米颗粒（NPs），使用芦荟叶提取物作为天然还原和稳定剂。制备的纳米结构表现为非晶性质，在热处理后演变成晶体结构。详细的结构和光谱分析揭示了两种氧化铁相，磁赤铁矿（γ-Fe2O3）和赤铁矿（α-Fe2O3）的共存，为调整氧化铁纳米材料的性能策略的发展提供了有价值的见解。特别地，晶体NPs被评价为光热剂在光驱动治疗应用中的潜在用途。

引用次数: 0

Controlling particle-laden flow in a ventilated trapezoidal chamber via surrogate-based multi-objective optimization 基于代理的多目标优化控制通风梯形室的载尘流

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2026-01-01 Epub Date: 2025-11-27 DOI: 10.1016/j.apt.2025.105126

Hang Chen , Sibao Wang , Chenglei Wang , Shilong Wang

Hazardous particle diffusion and deposition during machining within chambers pose critical risks to operational safety. Although structural design offers a promising approach to controlling particle-laden flow, simultaneously reducing deposition and pressure drop while enhancing particle escape efficiency remains a significant challenge, particularly within irregular chambers. Thus, this study focuses on optimizing the trapezoidal chamber geometry to address these conflicting objectives. Specifically, a computational fluid dynamic (CFD)-based surrogate model is developed, achieving high-fidelity prediction across the four-dimensional design space by systematically optimizing its hyperparameters. This enables a multi-objective optimization to map the trade-off landscape, from which a final balanced design is selected using a scenario-based approach. Sensitivity analysis identifies the lower-end width (X_n), horizontal offset (X_m), and trapezoidal height (X_h) as the primary drivers of pressure drop, deposition and escape, respectively. The Pareto-front reveals a vast design space, with specialized configurations reducing particle deposition by up to 78.94%. The selected balanced design concurrently reduces deposition by 19.83% and pressure drop by 15%, while increasing escape efficiency by 9.53%. Lagrangian analysis confirms that the geometry governs particle trajectories by modulating the size and location of recirculation zones. The optimized design also demonstrates robust performance across various inlet velocities and particle sizes.

在腔室内加工过程中，有害颗粒的扩散和沉积对操作安全构成严重威胁。尽管结构设计为控制颗粒流提供了一种很有前途的方法，但同时减少沉积和压降，提高颗粒逸出效率仍然是一个重大挑战，特别是在不规则腔室中。因此，本研究的重点是优化梯形腔体的几何形状，以解决这些相互冲突的目标。具体而言，开发了基于计算流体动力学（CFD）的代理模型，通过系统优化其超参数，实现了跨四维设计空间的高保真预测。这使得多目标优化能够映射权衡景观，从中使用基于场景的方法选择最终的平衡设计。敏感性分析表明，底端宽度（Xn）、水平偏移量（Xm）和梯形高度（Xh）分别是压降、沉积和逸出的主要驱动因素。帕累托正面显示了巨大的设计空间，特殊的配置可减少高达78.94%的颗粒沉积。选择的平衡设计同时减少了19.83%的沉积和15%的压降，同时提高了9.53%的逃逸效率。拉格朗日分析证实，几何形状通过调节再循环区的大小和位置来控制粒子轨迹。优化后的设计在不同的入口速度和颗粒尺寸上也表现出了强大的性能。

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引用次数: 0

A numerical simulation study on the effectiveness of a two-stage electrostatic precipitator in removing residential submicron-sized cooking particles 两级静电除尘器去除亚微米级烹饪颗粒的数值模拟研究

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-11-18 DOI: 10.1016/j.apt.2025.105117

Huizhe Cao , Ye Jiang , Yuanbo Wang , Haisheng Shi , Jiankai Dong

Reducing oil fume particle emissions during kitchen cooking is crucial for maintaining indoor air quality. This study focused on studying a two-stage ESP in residential kitchens to enhance its capture efficiency of submicron-sized particles. Through simulations, four factors were examined: plate spacing in the dust collection area, length of the dust collection area, dust collection voltage, and inlet wind speed. Based on the influencing factors, the structure optimization and optimization verification experiments of ESP were carried out. The results of the study revealed that by reducing the plate spacing from 6.67 mm to 5 mm, the capture efficiency of partial size particles can be increased by 42.18 %. Additionally, increasing the length of the dust collection area by 20 mm can result in a 13.8 % increase. Furthermore, increasing the dust collection voltage by 1.5 kV can result in a 30.07 % increase. Lastly, reducing the inlet wind speed by 0.7 m/s can lead to a 12.61 % increase in capture efficiency. The optimization results show that the trapezoidal plate improves particle capture efficiency across different particle sizes with changing wind speed. These findings highlight the need to optimize ESP parameters in kitchens to effectively capture submicron oil fumes and improve indoor air quality.

减少厨房烹饪过程中油烟颗粒的排放对保持室内空气质量至关重要。本研究主要研究了一种用于住宅厨房的两级ESP，以提高其对亚微米颗粒的捕获效率。通过模拟，考察了集尘区板间距、集尘区长度、集尘电压和进口风速四个因素。基于影响因素，对电除尘器进行了结构优化和优化验证实验。研究结果表明，将板间距从6.67 mm减小到5 mm，可使部分粒径颗粒的捕集效率提高42.18%。此外，将集尘区域的长度增加20mm可导致13.8%的增加。此外，提高1.5 kV的集尘电压可使其提高30.07%。最后，将进口风速降低0.7 m/s可使捕获效率提高12.61%。优化结果表明，随着风速的变化，梯形板可以提高不同粒径颗粒的捕集效率。这些发现强调了优化厨房ESP参数以有效捕获亚微米油烟和改善室内空气质量的必要性。

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引用次数: 0

Remarkable flexo-photocatalytic organic pollutant degradation by oxygen vacancy engineered nonpolar NaBi(MoO4)2 nanospheres 氧空位工程非极性NaBi(MoO4)2纳米球对柔性光催化有机污染物的显著降解

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-11-24 DOI: 10.1016/j.apt.2025.105129

Tianxiang Ren , Pengyue Xing , Liying Wang , Zhenzhu Cao , Zhengxiang Cheng , Yutong Xiao , Feifei Wang , Erjun Zhao , Shujun Zhang

The wide band gap and rapid recombination of electron-hole pair significantly limit the activity of photocatalyst. Although the polarization in ferroelectric under stress can enhance charge separation, this effect is restricted to polar materials. Overcoming this limitation is a key challenge in designing advanced catalyst capable of converting both light and mechanical energy into chemical energy. In this work, oxygen vacancy has been introduced into centrosymatric NaBi(MoO₄)₂ (NBMO) nanospheres via a facile annealing treatment, which greatly improved the photocatalytic, flexocatalytic and photo-flexocatalytic performance. The composition with optimal oxygen vacancy concentration (NBMO-5) showed remarkable flexo-photocatalytic activity, which achieved 98.7 % RhB degradation within 8 min, outperforming individual flexocatalysis and photocatalysis by 10-fold and 4-fold, respectively. The outstanding performance is attributed to the synergistic effects of oxygen vacancies and flexoelectric potential, which effectively suppress charge recombination and enhance photocatalytic activity. Active species trapping experiment reveals that •OH and h⁺ play nearly equally important roles in the flexo-photocatalysis, different from individual photocatalysis and flexocatalysis. Mass spectra analysis indicates that conjugate ring destruction is the dominant pathway during flexo-photocatalytic degradation of RhB by the NBMO-5 catalyst. This work demonstrates that oxygen vacancy is an innovative strategy for engineering centrosymmetric materials to address environmental remediation challenge.

较宽的带隙和电子-空穴对的快速复合严重限制了光催化剂的活性。在应力作用下，铁电体的极化可以促进电荷分离，但这种作用仅限于极性材料。克服这一限制是设计能够将光能和机械能转化为化学能的先进催化剂的关键挑战。本研究通过简单的退火处理，将氧空位引入到中心对称NaBi(MoO4)2 （NBMO）纳米球中，大大提高了其光催化、柔催化和光柔催化性能。最佳氧空缺浓度的组合物（NBMO-5）表现出优异的柔光催化活性，在8 min内对RhB的降解率达到98.7%，分别比单独的柔光催化和光催化性能高10倍和4倍。这种优异的性能是由于氧空位和柔性电位的协同作用，有效地抑制了电荷重组，提高了光催化活性。活性物质捕获实验表明，•OH和h+在柔化光催化中起着几乎同等重要的作用，不同于单独的光催化和柔化催化。质谱分析表明，NBMO-5催化剂柔化光催化降解RhB时，共轭环破坏是主要途径。这项工作表明，氧空位是工程中心对称材料解决环境修复挑战的创新策略。

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引用次数: 0

Increasing the yields of natural flake graphite spheronization with the NARA Hybridization System 用NARA杂交系统提高天然鳞片石墨球化收率

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-11-24 DOI: 10.1016/j.apt.2025.105115

Dean Glass , Thushan Pathirana , Shiqin Yan , Adam S. Best , Mehrdad Parsa , Karl Bunney , Amanda V. Ellis

Commercial natural flake graphite spheronization using mill trains, particularly for lithium-ion battery (LIB) materials, is known to produce low yields (30–50 %) post-processing. The NARA Hybridization System (NHS-0) is a rotary mill with the capability to spheronize natural flake graphite within the specifications required for LIB graphite materials. In this work, commercial natural flake graphite, with a D₅₀ particle size of ∼ 83 µm, was spheronized in a NHS-0 at various speeds and durations. Conditions were optimized to produce spheronized particles in the size range of 4 µm to 30 µm, ideal for LIB anodes for electric vehicle applications. The optimal conditions for 10 g batches were found to be 9000 RPM for 180 s, which produced the highest yield (52 %), in specification, with the least amount of fines (<4 µm). This product was sieved with coarser material (>25 µm) and re-fed into the NHS-0 in order to maximise the yields. The cumulative total yields from the re-spheronization were 65 %, 68 % and 71 % for the 1st, 2nd and 3rd re-spheronizations, respectively. Notably, the re-spheronization did not degrade the product as observed via X-ray diffraction, scanning electron microscopy and Raman spectroscopy. Coin cell testing showed a minor decrease in initial coulombic efficiency of 93.1 % to 90.1 % and capacity from the initial spheronization to the 3rd re-spheronized materials, respectively.

使用磨机系统进行天然鳞片石墨球化，特别是锂离子电池（LIB）材料，后处理收率很低（30 - 50%）。NARA杂交系统（NHS-0）是一种旋转磨机，能够在LIB石墨材料要求的规格范围内将天然片状石墨球化。在这项工作中，D50粒径为~ 83µm的商业天然鳞片石墨在NHS-0中以不同的速度和持续时间被球化。优化了条件，生产出尺寸在4µm到30µm之间的球形颗粒，这是电动汽车用锂离子电池阳极的理想材料。10 g批次的最佳条件为9000 RPM， 180 s，收率最高（52%），规格最小（4µm）。该产品用粗料（>25µm）筛过，再送入NHS-0，以最大限度地提高收率。第1次、第2次和第3次再球化的累计总得率分别为65%、68%和71%。值得注意的是，通过x射线衍射、扫描电子显微镜和拉曼光谱观察到，再圆化并没有使产品降解。硬币电池测试表明，从初始球化到第三次再球化材料，初始库仑效率和容量分别略有下降，分别为93.1%至90.1%。

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引用次数: 0

Study on the effect of porous materials with sand-dust adhesion on explosion characteristics of combustible gas in utility tunnels 含沙尘的多孔材料对公用事业隧道可燃气体爆炸特性的影响研究

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-11-11 DOI: 10.1016/j.apt.2025.105114

Zehao Yin, Lingjun Xu, Zengliang Zhang

This study systematically investigates the coupling effects of pore characteristics and sand-dust adhesion on methane-air explosion propagation. Experiments were conducted in a semi-confined pipeline using four types of silicon carbide foam ceramics (10–40 PPI) with controlled sand-dust loads (0–20 mL) at two strategic positions. High-speed imaging and pressure sensors recorded flame velocity and overpressure dynamics. Results demonstrate a critical pore-dependent suppression mechanism: while 10 PPI materials enhance flame acceleration due to insufficient quenching, 20 PPI permits limited propagation, and 30–40 PPI show progressively stronger suppression, with 40 PPI achieving optimal performance as its pore size approaches methane’s quenching diameter. Sand-dust adhesion creates competing effects—inducing turbulence while causing flow blockage—leading to a nonlinear response where explosion intensity peaks at 10 mL across all materials. This consistent pattern reveals a universal coupling mechanism between particulate resuspension and porous structures. The findings provide both fundamental insights into explosion dynamics and practical guidelines for designing advanced industrial explosion protection systems, particularly in dust-prone environments like utility tunnels and industrial ducts.

本文系统地研究了孔隙特性和沙尘附着对甲烷-空气爆炸传播的耦合效应。实验在半密闭管道中进行，使用四种碳化硅泡沫陶瓷（10-40 PPI），在两个战略位置控制沙尘负荷（0-20 mL）。高速成像和压力传感器记录了火焰速度和超压动态。结果显示了一种关键的孔隙依赖抑制机制：10种PPI材料由于淬火不足而增强了火焰加速，20种PPI允许有限的传播，30-40种PPI的抑制作用逐渐增强，其中40种PPI在孔径接近甲烷的淬火直径时达到最佳性能。沙尘粘附产生了相互竞争的效应——在引起气流阻塞的同时诱导湍流——导致非线性响应，所有材料的爆炸强度在10ml时达到峰值。这种一致的模式揭示了颗粒再悬浮和多孔结构之间的普遍耦合机制。这些发现为爆炸动力学和设计先进的工业防爆系统提供了基本的见解，特别是在粉尘易发的环境中，如公用事业隧道和工业管道。

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引用次数: 0

Inside Front Cover (Aims & Scope, Editors) 内页封面（Aims & Scope，编辑）

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-12-08 DOI: 10.1016/S0921-8831(25)00358-9

引用次数: 0

Study on flotation performance and selective adsorption mechanism of new α-fatty acid on associated barite 新型α-脂肪酸在伴生重晶石上的浮选性能及选择性吸附机理研究

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology

Pub Date : 2025-12-01 Epub Date: 2025-10-31 DOI: 10.1016/j.apt.2025.105097

Yuanyuan Tao , Junwei Huang , Jie Liu , Wencheng Ge , Tianjiao Chang , Kai Jiang , Liang Lv

Barite and fluorite commonly occur together in nature, posing a challenge for efficient separation. To overcome this, a novel anionic modified collector, α-fatty acid, was employed to enhance floatability differences. Using this collector, a barite concentrate with a BaSO₄ grade of 79.76% and recovery of 86.38% was achieved from barite-fluorite mixed ore, confirming its selective separation potential. The adsorption mechanism was investigated through XRD, micro-flotation, zeta potential, FTIR, XPS, and DFT analyses. Results showed that α-fatty acid molecules chemisorb onto barite surfaces. The halogen atom at the α-position exerts an electron-withdrawing effect, forming a p-π conjugated system with the carboxyl group, which enhances polarity and strengthens adsorption selectivity toward barite. Moreover, the halogen increases steric hindrance, improving the collector’s solubility and dispersion in flotation systems.

自然界中重晶石和萤石通常同时存在，这对有效分离提出了挑战。为了克服这一问题，采用了一种新型阴离子改性捕收剂α-脂肪酸来提高可浮性差异。采用该捕收剂，从重晶石-萤石混合矿石中获得了BaSO4品位为79.76%、回收率为86.38%的重晶石精矿，证实了该捕收剂的选择性分离潜力。通过XRD、微浮选、zeta电位、FTIR、XPS和DFT分析考察了吸附机理。结果表明α-脂肪酸分子在重晶石表面发生化学吸附。α-位置的卤素原子产生吸电子效应，与羧基形成p-π共轭体系，增强了极性，增强了对重晶石的吸附选择性。此外，卤素增加了位阻，改善了捕收剂在浮选体系中的溶解性和分散性。

引用次数: 0

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