Chen Chen, Jie Chang, Yu Sun, Areeje Fatima, Jiarui Huang
{"title":"Preparation of Pd nanoparticle-modified FeWO4 hollow spheres for highly selective hydrogen sulfide and acetone detection","authors":"Chen Chen, Jie Chang, Yu Sun, Areeje Fatima, Jiarui Huang","doi":"10.1007/s11706-026-0762-3","DOIUrl":"10.1007/s11706-026-0762-3","url":null,"abstract":"<div><p>The development of a highly responsive and selective gas sensor for volatile organic compounds, such as hydrogen sulfide and acetone, is still required. In this study, FeWO<sub>4</sub> hollow spheres modified with Pd nanoparticles were synthesized using ammonium phosphotungstate hydrate dodecahedra as sacrificial templates followed by liquid-phase reduction. The morphologies, microstructures, and gas-sensing characteristics of as-prepared sensing nanomaterials have been investigated. The tiny Pd nanoparticles are well anchored on the FeWO<sub>4</sub> hollow spheres. At the working temperature of 280 °C, the 3 wt.% Pd/FeWO<sub>4</sub> hollow sphere sensor exhibits higher sensitivity to acetone and ethanol gasses than unmodified FeWO<sub>4</sub> hollow spheres, as well as good repeatability and fast response. Meanwhile, the 3-Pd/FeWO<sub>4</sub> hollow sphere sensor at a low operation temperature of 25 °C exhibits a high response of 2.3–10 ppm hydrogen sulfide with excellent selectivity, which is much stronger than that of the FeWO<sub>4</sub> sensor. The outstanding performance of the 3-Pd/FeWO<sub>4</sub> hollow sphere sensor is attributable to its exceptional hollow microstructure with a high specific surface area and the catalytic properties of Pd nanoparticles.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147797154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"基于人工界面膜修饰的强化型锂-铋负极用于稳定锂金属电池","authors":"伍舜, 王德宇","doi":"10.63887/fns.2026.2.2.8","DOIUrl":"https://doi.org/10.63887/fns.2026.2.2.8","url":null,"abstract":"锂金属负极由于其具有较高的比容量(3860 mAh g-1)和最低的氧化还原电位(-3.04 V vs 标准氢电极),被认为是下一代高能量密度电池的理想负极材料之一。然而,锂金属电极在充放电循环过程中存在锂枝晶生长、反应活性过高等问题,导致循环稳定性交叉,安全性能不佳等问题,严重阻碍了锂金属电池的实际应用。因此,抑制枝晶生长、提升金属锂电极的长循环性能,是发展金属锂电池的关键。本研究利用合金化锂-铋(Li-Bi)电极作为改善金属锂沉积/剥离均匀性的复合电极,并针对其在循环中易发生结构破裂的问题,设计了一种功能型人工界面来修饰Li-Bi电极,获得了一种强化型Li-Bi电极(Strengthened Li-Bi)。循环中,Strengthened Li-Bi表面的人工界面膜一方面能提供聚合物材料的高机械韧性,从而维持电极的结构完整性,另一方还能原位形成富含无机物的界面膜,加速锂离子输运,改善锂沉积/剥离动力学和均匀性。与原始的Li-Bi电极相比较,Strengthened Li-Bi电极具备优异的结构稳定性以及锂离子传导能力,以其组装的对称电池在电流密度1 mA cm-2和沉积面容量1 mAh cm-2循环条件下可稳定循环达600 h以上;其在与面容量~2 mAh cm-2的LiNi0.8Co0.1Mn0.1O2(NCM811)正极匹配制备的金属锂全电池,能够稳定循环250圈,平均库仑效率高达99.9 %。该工作为实用化锂金属电池提供了一种新的设计思路。","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"2 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2026-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sci-open.net/index.php/FNS/article/download/12080/13887","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147911175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Advances in chitosan-based biosensors for affective computing","authors":"Yi Wang, Yujun Wan","doi":"10.1007/s11706-026-0761-4","DOIUrl":"10.1007/s11706-026-0761-4","url":null,"abstract":"<div><p>Affective computing depends on biosensors capable of detecting physiological signals associated with human emotions. Chitosan, a naturally occurring cationic polysaccharide derived from chitin, has emerged as a promising platform for such devices due to its renewability, biodegradability, biocompatibility, and ease of chemical modification. Its abundant amino and hydroxyl groups provide versatile sites for derivatization, enabling tailored solubility, mechanical performance, and functional responsiveness. These attributes make chitosan well suited for wearable and implantable emotion-sensing systems; however, challenges remain, including environmental stability, signal drift under large deformation, and maintaining long-term skin comfort. This review provides an interdisciplinary overview of chitosan’s structural, solution, and interfacial properties, demonstrating how these characteristics can enhance biosensor performance in affective computing applications. Advances in chemical modification are evaluated for their roles in improving solubility, conductivity, selectivity, and mechanical robustness. Persistent challenges, including reproducibility, durability, and biocompatibility under real-world conditions, are discussed. Finally, future perspectives are outlined, focusing on greener production methods, multi-modal sensor integration, and the expansion of chitosan-based technologies into new emotion-aware application domains.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Facet–doping coupling governs ferrocene monolayer redox on silicon surfaces","authors":"Xiaojie Zhong, Xiaoxue Song, Weiqiang Zhou, Qian Yang, Shun Li, Jianming Zhang, Yuqiao Zhang, Long Zhang","doi":"10.1007/s11706-026-0764-1","DOIUrl":"10.1007/s11706-026-0764-1","url":null,"abstract":"<div><p>Semiconductor electrodes offer powerful routes to engineer electrochemical function, yet predicting surface confined charge transfer remains challenging because crystallography and doping reshape interfacial structure, band bending, and potential distribution. Here we map these coupled effects using ferrocene (Fc) monolayers grafted onto hydrogen-terminated p- and n-type Si(100), Si(110), and Si(111). Successful functionalization was confirmed by X-ray photoelectron spectroscopy and cyclic voltammetry. The Fc surface coverage (<i>Γ</i>) is strongly facet dependent and, in particular, doping reverses the facet selectivity: p-type follows (100) > (110) > (111), whereas n-type follows (111) > (110) > (100). In contrast, the Fc/Fc<sup>+</sup> mid-point potential shows a consistent orientation hierarchy for both dopings ((100) > (110) > (111)) with an additional ∼20–40 mV positive shift on n-type relative to p-type, indicating robust redox energetics with doping-controlled offsets. Peak widths exceed the ideal surface-confined limit and, together with impedance responses, point to non-ideal behavior dominated by interfacial electrostatics rather than ohmic artifacts. This facet-by-doping map clarifies how the silicon surface structure and electronic boundary conditions partition their influence across the monolayer formation and redox energetics, providing guidance for silicon-based molecular electrochemical interfaces in sensing and molecular electronics.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147733083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hangjian Wang, Caiyin You, Na Tian, Xiaopei Zhu, Heguang Liu, Jing Zhang, Kaixuan Liu
{"title":"Advancements in modification strategies for Co2Z ferrite: towards high-frequency and high-performance materials","authors":"Hangjian Wang, Caiyin You, Na Tian, Xiaopei Zhu, Heguang Liu, Jing Zhang, Kaixuan Liu","doi":"10.1007/s11706-026-0754-3","DOIUrl":"10.1007/s11706-026-0754-3","url":null,"abstract":"<div><p>High-performance magnetic materials are critical for the advancements of wireless communication technologies, particularly in the realization of device miniaturization, efficient impedance matching, and low losses performance. Co<sub>2</sub>Z ferrite (Ba<sub>3</sub>Co<sub>2</sub>Fe<sub>24</sub>O<sub>41</sub>) is a promising material for radio frequency communication and microwave devices due to its favorable high-frequency magnetic properties and low-loss characteristics. Nevertheless, its performance still requires further optimization to meet the increasing demands of high-frequency applications. Although numerous strategies have been devised to optimize the magnetic and dielectric properties of Co<sub>2</sub>Z ferrite, a comprehensive review of these modification strategies remains notably lacking. This review provides a systematic summary of the latest advances in modification strategies, including ion doping, sintering additives, composite fabrication, and texture engineering. It highlights the mechanisms through which each strategy regulates magnetic and dielectric properties. Furthermore, practical guidance is provided for the design and fabrication of high-performance Co<sub>2</sub>Z ferrites, so as to promote their application in high-frequency devices.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Layered NiFe-LDH grown on porous carbon nested in nickel foam or nickel net toward oxygen evolution reaction at large current density","authors":"Xinyu Lei, Enhui Hou, Tian Xia, Jingping Wang","doi":"10.1007/s11706-026-0760-5","DOIUrl":"10.1007/s11706-026-0760-5","url":null,"abstract":"<div><p>Nickel–iron layered double hydroxide (NiFe-LDH) demonstrates outstanding catalytic performance for the oxygen evolution reaction (OER) in alkaline media. Herein a general strategy is proposed for fabricating a series of electrodes consisting of NiFe-LDH grown on porous carbon nested in nickel foam (NF) or nickel net (NN). The electrodes exhibit significant OER activity and stability. The porous carbon nested in NF or NN provides a large specific surface area, enabling substantial loading of NiFe-LDH and thereby increasing the number of active sites, which enhances the overall OER catalytic performance. As a result, the NiFe-LDH/C-NF-M-0.1-1200 electrode only requires overpotentials of ∼230 and ∼280 mV to drive a current density of 100 and 800 mA·cm<sup>−2</sup> in 1.0 mol·L<sup>−1</sup> KOH, respectively. Moreover, it operates stably at 500 mA·cm<sup>−2</sup> for 14 h. This strategy provides a new approach for the rational design of efficient electrocatalysts for electrochemical applications.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340336","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Sustainable versus conventional approaches: dual-doped α-Fe2O3 nanoparticles for enhanced photocatalytic and antioxidant performance","authors":"Pankaj Kumar, Ashwani Tapwal, Ashwani Kumar, Naveen Thakur","doi":"10.1007/s11706-026-0752-5","DOIUrl":"10.1007/s11706-026-0752-5","url":null,"abstract":"<div><p>Dye pollutions are persistent organic pollutants that are receiving much attention. Magnetic nanoparticles (NPs) are substantial compounds for the removal of organic dyes from wastewater. In this study, <i>Azadirachta indica</i> (<i>A. indica</i>) extract and polyvinylpyrrolidone (PVP) polymer were used as an encapsulating agent for Ni/Cu-doped α-Fe<sub>2</sub>O<sub>3</sub> NPs. Those NPs exhibit rhombohedral crystals with the crystallite size of 14–22 nm in a spherical shape, which have a saturation magnetization value approximately between 30 and 36 emu·g<sup>−1</sup> under ambient conditions. Bismarck brown Y (BBY) and Rhodamine B (RhB) dyes were used to test the photocatalytic activity, and results showed that Fe<sub>2</sub>O<sub>3</sub> had a removal efficiency up to 96%–98% in 60 min. Fe<sub>2</sub>O<sub>3</sub> NPs also demonstrated antioxidant potential against the 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical, and results suggest that <i>A. indica</i>-encapsulated Fe<sub>2</sub>O<sub>3</sub> NPs are potentially fascinating due to greater accessibility of bioactive constituents with antioxidant activities. This research synthesizes biologically generated doped α-Fe<sub>2</sub>O<sub>3</sub> NPs with unique structural and morphological features, offering multifunctional applications like antioxidant and photocatalytic capabilities. These novel properties offer potential uses in a diversity of industries, such as environmental cleanup, energy conversion, and biomedical applications.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junge Zhang, Jiaxin Liu, Xuemei Lin, Weiqiang Zhou, Chuan Xu, Yuqiao Zhang, Long Zhang, Yi Guo, Xianghai Song, Jisheng Zhang, Xin Liu, Yangyang Yang, Huanhuan Zhu, Pengwei Huo
{"title":"Advances in hydrogenation catalysis by porous materials supported palladium nanoparticles","authors":"Junge Zhang, Jiaxin Liu, Xuemei Lin, Weiqiang Zhou, Chuan Xu, Yuqiao Zhang, Long Zhang, Yi Guo, Xianghai Song, Jisheng Zhang, Xin Liu, Yangyang Yang, Huanhuan Zhu, Pengwei Huo","doi":"10.1007/s11706-026-0757-0","DOIUrl":"10.1007/s11706-026-0757-0","url":null,"abstract":"<div><p>This review summarizes the past-decade advances in porous materials supported palladium (Pd) nanocatalysts for hydrogenation. Building on the intrinsic 4d<sup>10</sup> character of Pd, we establish a “support-metal-microenvironment” triadic synergy framework that elucidates how oxides, carbons, zeolites, metal–organic frameworks/covalent organic frameworks (MOFs/COFs) and bimetallic modulate activity/selectivity at the atomic scale through electronic engineering, geometric confinement and acid–metal proximity. A three-tier “electronic tuning–interfacial sacrifice–coupled reaction” anti-poisoning strategy is proposed, enabling thermal-atomization regeneration, <i>in-situ</i> water–gas-shift removal of CO, potential-window scavenging of Cl<sup>−</sup> and micropore anti-sintering. Future perspectives include high-throughput density functional theory (DFT)-plus-machine-learning screening, self-healing intelligent supports and micro-channel continuous-flow processes that will propel green and precise hydrogenation in fine chemicals and hydrogen storage, offering a transferable paradigm for rational catalyst design.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fanyu Zhao, Yuyuan Guo, Seung-Jun Lee, Jin-Chul Kim
{"title":"Microneedles containing collagen, hyaluronic acid, and cinnamoyl-functionalized poly(hydroxyethyl acrylate-co-butyl methacrylate) with light- and temperature-dependent transdermal delivery properties","authors":"Fanyu Zhao, Yuyuan Guo, Seung-Jun Lee, Jin-Chul Kim","doi":"10.1007/s11706-026-0756-1","DOIUrl":"10.1007/s11706-026-0756-1","url":null,"abstract":"<div><p>This work reports a ultraviolet (UV)- and temperature-responsive dissolving microneedle matrices based on cinnamoyl-functionalized poly(hydroxyethyl acrylate-<i>co</i>-butyl methacrylate) (Cin-poly(HEA-<i>co</i>-BMA)) for controllable transdermal delivery. The lower critical solution temperature (LCST) of the copolymer decreased with increasing hydrophobic moieties, while UV irradiation increased the LCST via cinnamoyl photoreaction, enabling light-regulated thermal responsiveness. Pyramidal microneedle matrices exhibited an elastic–fracture–elastic deformation behavior under compression, with a Young’s modulus of 0.187–0.221 MPa, and UV treatment further enhanced their mechanical strength. Nearly 100% skin penetration efficiency was achieved, particularly for UV-treated needles. Dye permeation at 37 °C was significantly higher than that at 25 °C, whereas UV irradiation effectively suppressed this thermally promoted permeation by elevating the LCST. This dual-responsive microneedle matrix system provides a programmable strategy for mechanically robust and externally regulated transdermal delivery.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":"20 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2026-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147340338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}