Bulletin of Materials Science最新文献

Robust metal network electrodes fabricated via electrospun fiber mask for optoelectronic applications 利用静电纺纤维掩模制备的坚固金属网络电极用于光电应用

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-11-06 DOI: 10.1007/s12034-026-03735-z

Namuni Sneha, S Kiruthika

{"title":"Robust metal network electrodes fabricated via electrospun fiber mask for optoelectronic applications","authors":"Namuni Sneha, S Kiruthika","doi":"10.1007/s12034-026-03735-z","DOIUrl":"10.1007/s12034-026-03735-z","url":null,"abstract":"<div><p>In this era of smart technologies, there is an increasing demand for developing highly efficient, mechanically robust transparent conducting electrodes through simple chemical fabrication techniques. The current study discusses the fabrication of highly conducting interconnected gold (Au) networks using an electrospun fiber mask for the selective etching of the Au thin films. The fabrication strategy involved coating polystyrene (PS) fibers over thin metal films, which served as masks for Au thin film and subsequent etching of unmasked regions. This was followed by the removal of the polymer mask, yielding highly interconnected, flexible, transparent conducting electrodes (FTCEs) with seamless junctions. The resulting Au FTCE exhibits highly tunable transmittances (~65–78 %) and sheet resistances (between 7 and 23 Ω/□). Beyond their excellent optoelectronic properties, the fabricated Au FTCE demonstrates outstanding mechanical flexibility, making it suitable for transparent flexible devices, such as transparent capacitors (0.155 mF/cm<sup>2</sup>) and transparent heaters, which can be used as defrosting, defogging and deicing windows. Overall, this approach made a significant contribution to advancing wearable electronics and adaptive smart glass systems, aligning with contemporary demands in chemical engineering, materials science and flexible device engineering.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338697","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}

引用次数: 0

Microstructural evolution and mechanical characterization of friction stir-processed Al8011 hybrid metal matrix composites with TiB2 and SiC reinforcement TiB2和SiC增强Al8011杂化金属基摩擦搅拌复合材料的组织演变及力学性能

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-30 DOI: 10.1007/s12034-026-03770-w

R Thirumavalavan, V Mugendiran, M Manoj, S Karthikeyan

{"title":"Microstructural evolution and mechanical characterization of friction stir-processed Al8011 hybrid metal matrix composites with TiB2 and SiC reinforcement","authors":"R Thirumavalavan, V Mugendiran, M Manoj, S Karthikeyan","doi":"10.1007/s12034-026-03770-w","DOIUrl":"10.1007/s12034-026-03770-w","url":null,"abstract":"<div><p>Al8011 aluminium alloy is widely used in aerospace, automotive, and marine applications due to its low density, good formability, and corrosion resistance. However, its low hardness, poor wear resistance, and limited mechanical strength restrict its use in high-load structural applications. To overcome the above-mentioned limitations, Al8011 hybrid metal matrix composites reinforced with 2 wt.% TiB<sub>2</sub> and different SiC content from 1 to 7 wt.% were fabricated through the stir casting process and further surfaced by the friction stir processing (FSP) technique. Further, microstructural analysis of friction-surfaced Al8011 hybrid metal matrix composites revealed the presence of refined equiaxed grains with uniform reinforcement distribution throughout the surface. The FSP carried out at a rotational speed of 900 rpm and traverse speed of 20 mm/min showed improved particle distribution and grain refinement within the composite matrix. Furthermore, the friction-surfaced Al8011 hybrid metal matrix composites showed improved mechanical and corrosion properties that demonstrate about 32% increase in hardness and 23% improvement in corrosion resistance. Based on the present investigation, it is concluded that the Al8011/2 wt.% TiB<sub>2</sub>/5 wt.% SiC composite exhibited the best overall performance for lightweight structural applications.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339368","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}

引用次数: 0

Influence of Mn2+ substitution on the structural, electrical and magnetic properties of NiFe2O4 nanoparticles Mn2+取代对NiFe2O4纳米颗粒结构、电、磁性能的影响

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-29 DOI: 10.1007/s12034-026-03780-8

Maibam Franco Singh, Reema Gupta, Monika Tomar, Arijit Chowdhuri, Hidangmayum Basantakumar Sharma

{"title":"Influence of Mn2+ substitution on the structural, electrical and magnetic properties of NiFe2O4 nanoparticles","authors":"Maibam Franco Singh, Reema Gupta, Monika Tomar, Arijit Chowdhuri, Hidangmayum Basantakumar Sharma","doi":"10.1007/s12034-026-03780-8","DOIUrl":"10.1007/s12034-026-03780-8","url":null,"abstract":"<div><p>Inverse spinel nickel ferrite (NiFe<sub>2</sub>O<sub>4</sub>) and manganese-substituted nickel ferrite nanoparticles (Mn<sub><i>x</i></sub>Ni<sub>(1–<i>x</i>)</sub>Fe<sub>2</sub>O<sub>4</sub>) with <i>x</i> = 0.0, 0.05, 0.08, 0.10 were synthesized via the sol–gel auto-combustion technique. X-ray diffraction spectroscopy shows that the prepared samples are crystalline in nature, with preferred orientation along the (311) plane, and have a cubic system with space group <i>Fd-3m</i>. The elemental composition and morphological features of the samples were confirmed by energy-dispersive X-ray (EDAX) spectroscopy and scanning electron microscopy (SEM). The room-temperature electrical properties were studied over a frequency range of 10<sup>2</sup>–10<sup>6</sup> Hz using an LCR meter. The magnetic properties were measured using a vibrating sample magnetometer (VSM), which shows that the samples have soft magnetic behaviour. The magnetic anisotropy constant, calculated via the law of approach to saturation (LAS), exhibited a decreasing trend with increasing Mn<sup>2+</sup> content, indicating a disruption in the magnetic spin alignment of the samples due to cation substitution. The Mn-substituted samples show enhanced dielectric performance as reflected by increased dielectric constant and reduced dielectric loss, improved electrical conductivity and enhanced magnetic properties. These results suggest that Mn-doped nickel ferrite nanoparticles are promising candidates for using as an improved ferromagnetic phase in magnetoelectric and spintronic devices.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339478","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}

引用次数: 0

High-performance PeDAMA4Pb5I16/Cs2SnI6 Dion–Jacobson hybrid perovskite for self-powered photodetection and efficient photovoltaics toward imaging, sensing and communication 高性能PeDAMA4Pb5I16/Cs2SnI6 Dion-Jacobson杂化钙钛矿，用于自供电光探测和高效光电成像，传感和通信

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-28 DOI: 10.1007/s12034-026-03725-1

Aditya Dubey, Manasvi Raj, Neeraj Goel

{"title":"High-performance PeDAMA4Pb5I16/Cs2SnI6 Dion–Jacobson hybrid perovskite for self-powered photodetection and efficient photovoltaics toward imaging, sensing and communication","authors":"Aditya Dubey, Manasvi Raj, Neeraj Goel","doi":"10.1007/s12034-026-03725-1","DOIUrl":"10.1007/s12034-026-03725-1","url":null,"abstract":"<div><p>Dion–Jacobson (DJ) two-dimensional (2D) perovskites have recently gained attention as a promising class of materials for next-generation optoelectronics. We have designed and modeled a hybrid device integrating a PeDAMA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub> DJ and Cs<sub>2</sub>SnI<sub>6</sub> perovskite in the configuration FTO/WS<sub>2</sub>/PeDAMA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub>/Cs<sub>2</sub>SnI<sub>6</sub>/CuSCN/Au. This design was comparatively analyzed against a pure DJ-based structure (FTO/WS<sub>2</sub>/PeDAMA<sub>4</sub>Pb<sub>5</sub>I<sub>16</sub>/CuSCN/Au). Owing to favorable band alignment and built-in electric fields, the device supports self-powered photodetection under zero external bias. The simulated hybrid photodetector exhibited a responsivity of 0.734 A W<sup>−1</sup> and a specific detectivity of 7.12×10<sup>10</sup> Jones, representing a significant enhancement over the pure DJ counterpart (0.519 A W<sup>−1</sup> and 5.04×10<sup>10</sup> Jones, respectively). Furthermore, the hybrid configuration demonstrated excellent photovoltaic characteristics, achieving a power conversion efficiency (PCE) of 29.09%, an open-circuit voltage (V<sub>oc</sub>) of 1.50 V, a short-circuit current density (J<sub>sc</sub>) of 21.15 mA/cm<sup>2</sup>, and a fill factor (FF) of 91.32%. These findings established that integrating Cs<sub>2</sub>SnI<sub>6</sub> with a DJ-perovskite provides a highly effective pathway to enhance optoelectronic response and device performance, offering a robust platform for advanced bifunctional photodetector-solar cell applications. The work employed a hybrid DJ-perovskite design, utilizing strategic materials engineering to enhance photodetector and photovoltaic performance.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339164","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}

引用次数: 0

Computational investigation of hydrogen adsorption properties of fluorinated sumanenes 氟化苏蔓烯吸氢性能的计算研究

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-28 DOI: 10.1007/s12034-026-03785-3

Mehmet Sena Çelik, AkIn Azizoğlu

{"title":"Computational investigation of hydrogen adsorption properties of fluorinated sumanenes","authors":"Mehmet Sena Çelik, AkIn Azizoğlu","doi":"10.1007/s12034-026-03785-3","DOIUrl":"10.1007/s12034-026-03785-3","url":null,"abstract":"<div><p>The hydrogen adsorption properties of pristine and fluorinated sumanene derivatives were investigated using density functional theory and symmetry-adapted perturbation theory to assess their potential as lightweight hydrogen storage materials. Geometry optimizations and electronic structure calculations were performed using a dispersion-corrected long-range hybrid functional, while interaction energies and their physical origins were analyzed through energy decomposition. The results show that hydrogen adsorption is energetically favorable for all systems, with interaction energies ranging from approximately −8.6 to −15.0 kJ·mol<sup>–1</sup> and equilibrium adsorption distances of about 2.9–3.2 Å, characteristic of physisorption. Increasing hydrogen coverage from one to three molecules leads to a cumulative stabilization without inducing significant structural distortion or charge transfer. Energy decomposition analysis reveals that dispersion interactions dominate the binding mechanism, with electrostatic and induction contributions playing secondary roles. Fluorination enhances molecular polarization and slightly strengthens adsorption while preserving the noncovalent and reversible nature of hydrogen binding. Frontier orbital, molecular electrostatic potential, and infrared spectral analyses confirm that hydrogen adsorption causes only minor electronic and vibrational perturbations to the sumanene framework. The theoretical results demonstrate that fluorinated sumanenes maintain dispersion-driven hydrogen physisorption while offering tunable electronic properties, supporting their potential for reversible hydrogen storage and sensing applications.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339165","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}

引用次数: 0

Characterization of surface-modified PVA–alginate hydrogel films for biological microparticle recovery 生物微粒回收用表面改性pva -海藻酸盐水凝胶膜的表征

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-27 DOI: 10.1007/s12034-026-03777-3

Simge Varlik, Murat Öğdür, Şahin Utlu

{"title":"Characterization of surface-modified PVA–alginate hydrogel films for biological microparticle recovery","authors":"Simge Varlik, Murat Öğdür, Şahin Utlu","doi":"10.1007/s12034-026-03777-3","DOIUrl":"10.1007/s12034-026-03777-3","url":null,"abstract":"<p>Polyvinyl alcohol (PVA)–sodium alginate hydrogel films were prepared and evaluated as tunable polymeric sampling interfaces for the recovery of a model biological microparticle. The aim of the study was to investigate whether differences in hydrogel formulation and surface modification influence pollen recovery and to compare the recovery performance of the developed hydrogel films with gauze as a conventional fibrous reference material. Four PVA–alginate formulations were produced using freeze–thaw treatment followed by calcium-ion crosslinking and were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), swelling analysis, and macroporosity measurements. <i>Cedrus</i> sp. pollen was used as the model microparticle. Among the tested formulations, the NaCl-modified G4 film showed the highest relative recovery, approximately 135% of the gauze reference, while the unmodified G1 film showed approximately 127% relative recovery. In contrast, the citric acid-containing G2 and G3 formulations showed lower recovery values, both approximately 61% of the gauze reference. Recovery performance was not directly associated with swelling capacity or macroporosity. The higher recovery observed for G4 coincided with greater SEM-visible surface heterogeneity, although the present data do not establish a direct causal mechanism between surface morphology and particle recovery. Overall, the findings demonstrate the potential of PVA–alginate hydrogel films as controllable sampling interfaces for <i>Cedrus</i> sp. pollen recovery and provide a basis for further evaluation using additional particle types and larger experimental series.</p>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149339416","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}

引用次数: 0

First-principles investigation of uniaxial strain effects following the three directions on the structural, electronic and photocatalytic properties of iron-sillenite Bi25FeO40 单轴应变对铁硅辉石Bi25FeO40结构、电子和光催化性能影响的第一性原理研究

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-26 DOI: 10.1007/s12034-026-03673-w

H JEBARI, H MOUATASSIM, Y KADDAR, M ACHQRAOUI, L BOUDAD, M BOUJNAH, N TAHIRI, O EL BOUNAGUI, M TAIBI, N BEKKIOUI, H EZ-ZAHRAOUY

{"title":"First-principles investigation of uniaxial strain effects following the three directions on the structural, electronic and photocatalytic properties of iron-sillenite Bi25FeO40","authors":"H JEBARI, H MOUATASSIM, Y KADDAR, M ACHQRAOUI, L BOUDAD, M BOUJNAH, N TAHIRI, O EL BOUNAGUI, M TAIBI, N BEKKIOUI, H EZ-ZAHRAOUY","doi":"10.1007/s12034-026-03673-w","DOIUrl":"10.1007/s12034-026-03673-w","url":null,"abstract":"<div><p>The physical properties of pure iron-sillenite and Bi<sub>25</sub>FeO<sub>40</sub> under uniaxial strain effect have been investigated using first-principles calculations. The magnetic properties of pure Bi<sub>25</sub>FeO<sub>40</sub> were also studied via Monte Carlo simulations (MCS). The pristine compound exhibited a p-type semiconductor with a direct bandgap of 2.38 eV. The optical properties of the studied compound highlighted significant light absorption in both ultraviolet and visible wavelength range. In addition to its photocatalytic application for the degradation of pollutants and dyes, the Bi<sub>25</sub>FeO<sub>40</sub> material could also be used for hydrogen production in a basic solution with a pH greater than 10. Moreover, this compound was found to display important thermoelectric properties. Antiferromagnetic behaviour has been also claimed for iron-sillenite. The spin moment and the exchange-coupling interactions were also calculated using <i>ab initio</i> calculations to determine the Neel temperature (T<sub>N</sub>=246 K). Compressive effects allowed enhancement of bandgap energy under a negative strain effect along the x-axis, to reach a minimum value of 2.15 eV, thus improving the optical and the photocatalytic properties for water treatment and photodegradation of pollutants. The obtained results also qualified iron-sillenite as a promising photocatalyst for water treatment and coating material, as well as a potential candidate for dye-sensitized solar cells (DSSC) without and with the application of a compressive effect.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338978","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}

引用次数: 0

Exploring high Curie temperature and half-metallicity in Mn2WZ (Z = Al, Ga, Ge) full-Heusler alloys for spintronics and energy applications: An ab initio study 探索用于自旋电子学和能量应用的Mn2WZ （Z = Al, Ga, Ge）全heusler合金的高居里温度和半金属丰度：从头算研究

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-25 DOI: 10.1007/s12034-026-03734-0

O Merabiha, M B Siad, A Bekhti Siad, A Allouche, H Riane, F Z Dahou, F Boukabrine

{"title":"Exploring high Curie temperature and half-metallicity in Mn2WZ (Z = Al, Ga, Ge) full-Heusler alloys for spintronics and energy applications: An ab initio study","authors":"O Merabiha, M B Siad, A Bekhti Siad, A Allouche, H Riane, F Z Dahou, F Boukabrine","doi":"10.1007/s12034-026-03734-0","DOIUrl":"10.1007/s12034-026-03734-0","url":null,"abstract":"<div><p>This study investigates the structural, mechanical, electronic, magnetic, thermodynamic, and thermoelectric properties of Mn<sub>2</sub>WZ (Z = Al, Ga, and Ge) full-Heusler alloys using the full-potential linearized augmented plane wave (FP-LAPW) method within first-principles calculations. The electron exchange-correlation energy was characterized by the generalized gradient approximation–Perdew–Burke–Ernzerhof (GGA–PBE) and the GGA+<i>U</i> approaches, where <i>U</i> is the on-site Coulomb repulsion (Hubbard <i>U</i>). The compounds Mn<sub>2</sub>WAl, Mn<sub>2</sub>WGa, and Mn<sub>2</sub>WGe exhibit stability in the ferromagnetic (FM) phase, characterized by the Cu<sub>2</sub>MnAl-type L2<sub>1</sub> structure. The electronic characteristics of the examined compounds Mn<sub>2</sub>WZ (Z = Al, Ga, and Ge) revealed a half-metallic (HM) nature. The mechanical properties of all the studied compounds demonstrated stability, ductility, and anisotropic features. Furthermore, the magnetic characteristics indicated that the Mn atom plays a substantial role in the magnetic moments. The thermodynamic properties of the three compounds were investigated using the quasi-harmonic Debye model, while the thermoelectric properties were estimated using the BoltzTraP code. Computations across a temperature range of 50–1200 K yielded positive ZT values, indicating that these materials are potential candidates for use in spintronic and thermoelectric devices.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149338585","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}

引用次数: 0

Dominant role of acidity in the bifunctional FeO(OH) catalysts for PET glycolysis 酸度在双功能FeO（OH）催化剂PET糖酵解中的主导作用

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-24 DOI: 10.1007/s12034-026-03776-4

M Jiji, Dinesh Jagadeesan

{"title":"Dominant role of acidity in the bifunctional FeO(OH) catalysts for PET glycolysis","authors":"M Jiji, Dinesh Jagadeesan","doi":"10.1007/s12034-026-03776-4","DOIUrl":"10.1007/s12034-026-03776-4","url":null,"abstract":"<div><p>Converting PET to monomers via glycolysis using catalysts is a crucial technology that addresses both pollution and carbon recycling. Both acidity and basicity have long been reported to play catalytic roles in glycolysis. In the present work, the synthetic mineral FeO(OH) has been shown for the first time to be active in PET glycolysis. Interestingly, the four polymorphic forms of FeO(OH), namely α, β, γ and δ, showing different strengths of acidity and basicity, exhibited different PET depolymerization activities, with α-FeO(OH) showing the highest conversion of 72%. All catalysts showed high selectivity for bis(2-hydroxyethyl)terephthalate (BHET), a precursor to PET. Following a detailed structural and surface characterization, a strong correlation between surface acidity and basicity and PET conversion was obtained. It is shown that the moderate-to-strong acidity of the polymorphs favors the catalytic activity over the basicity of the catalyst. This work provides insights into the design of more efficient catalysts for PET glycolysis by tuning acidity and basicity.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149235111","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}

引用次数: 0

pH-responsive chitosan hydrogel-mediated NGF delivery drives enteric neural crest cell proliferation and differentiation in Hirschsprung’s disease ph响应性壳聚糖水凝胶介导的NGF递送驱动先天性巨结肠病肠内神经嵴细胞增殖和分化

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-10-24 DOI: 10.1007/s12034-026-03775-5

Tingwei Chen, Qijun Li, Xinyu Zhang, Yijun Wu, Shungen Huang

{"title":"pH-responsive chitosan hydrogel-mediated NGF delivery drives enteric neural crest cell proliferation and differentiation in Hirschsprung’s disease","authors":"Tingwei Chen, Qijun Li, Xinyu Zhang, Yijun Wu, Shungen Huang","doi":"10.1007/s12034-026-03775-5","DOIUrl":"10.1007/s12034-026-03775-5","url":null,"abstract":"<div><p>Hirschsprung’s disease (HSCR) is a congenital enteric neuropathy caused by impaired proliferation and differentiation of enteric neural crest cells (ENCCs). Although nerve growth factor (NGF) plays an essential role in ENCC development, its therapeutic potential is limited by poor stability, rapid degradation, and insufficient bioavailability. Herein, a chitosan-based pH-responsive delivery system (CS-2@1@NGF) was developed for controlled NGF delivery through functional modification of chitosan with microbial-derived compound 2 and synthetic compound 1. The physicochemical properties of the system were characterized by FTIR, DLS, and PXRD analyses. In a RET inhibitor-induced human neural crest stem cell (hNCSC) model mimicking HSCR-associated neurogenic impairment, CS-2@1@NGF-mediated NGF delivery significantly improved cell proliferation compared with free NGF. Furthermore, NGF-NPs promoted the expression of TrkA, PI3K, and the neuronal differentiation marker TUBB3, suggesting that the beneficial effects were associated with regulation of the TrkA/PI3K signaling pathway. These findings demonstrate that the CS-2@1@NGF platform improves NGF delivery efficiency and supports ENCC-related neurogenic processes <i>in vitro</i>, providing preliminary evidence for its potential application as a biomaterial-based strategy for future HSCR therapy.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 4","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149235112","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}

引用次数: 0