Materials Letters最新文献_第5页

Evaluating the influence of nano-SiO₂ on the fracture of self-compacting concrete using the size effect method 采用尺寸效应法评价纳米sio2对自密实混凝土断裂的影响

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-31 DOI: 10.1016/j.matlet.2026.140187

Gholamreza Kargariyan Marvasty, Moosa Mazloom, Seyed Hassan Ahmadi

{"title":"Evaluating the influence of nano-SiO₂ on the fracture of self-compacting concrete using the size effect method","authors":"Gholamreza Kargariyan Marvasty, Moosa Mazloom, Seyed Hassan Ahmadi","doi":"10.1016/j.matlet.2026.140187","DOIUrl":"10.1016/j.matlet.2026.140187","url":null,"abstract":"<div><div>Fracture mechanics analyses require accurate fracture energy characterization. In brittle materials, total fracture energy (GF) is difficult to measure due to unstable post-peak behavior, whereas initial fracture energy (Gf), governed by the peak load, can be determined reliably and provides a robust basis for estimating the total fracture energy. Accordingly, this study experimentally investigates the fracture behavior of self-compacting concrete (SCC) containing 1%, 2%, 3%, 4% and 5% nano-SiO2 contents using the size effect method. Six mix designs with a constant water-to-cement ratio of 0.35 were evaluated. The results demonstrate that nano-SiO2 addition increases the initial fracture energy (Gf) up to an optimal dosage, beyond which further incorporation results in a reduction. The maximum enhancement in initial fracture energy (Gf) observed in this study was 5.59%. Finally, the equation <math><msub><mi>G</mi><mi>f</mi></msub><mo>=</mo><mn>21.3148</mn><mspace></mspace><msup><mfenced><msub><mi>f</mi><mi>c</mi></msub></mfenced><mn>0.206071</mn></msup></math> is proposed to estimate the Gf of nano-SiO2 modified SCC.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140187"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171377","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

Bioprintable SA/PU hydrogels reinforced with tannic acid 单宁酸增强的生物打印SA/PU水凝胶

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140206

Lidia Zasada, Beata Kaczmarek-Szczepańska

引用次数: 0

Performance of an eco-friendly phytic acid conversion film on TC4 titanium alloy TC4钛合金环保型植酸转化膜的性能研究

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-04 DOI: 10.1016/j.matlet.2026.140219

Honglin Yan , Hanyang Zuo , Chunguang Zhu , Tong Wu , Zhenghong Xu , Wenli Liu , Jiyuan Xiao , Yunbo Zhang , Jianhong Lu

{"title":"Performance of an eco-friendly phytic acid conversion film on TC4 titanium alloy","authors":"Honglin Yan , Hanyang Zuo , Chunguang Zhu , Tong Wu , Zhenghong Xu , Wenli Liu , Jiyuan Xiao , Yunbo Zhang , Jianhong Lu","doi":"10.1016/j.matlet.2026.140219","DOIUrl":"10.1016/j.matlet.2026.140219","url":null,"abstract":"<div><div>An eco-friendly phytic acid (PA) conversion film was developed to enhance the marine durability of Ti-6Al-4 V titanium alloys (TC4) by improving galvanic corrosion resistance and organic coating adhesion. Optimal formation parameters were identified through orthogonal experiments. The film exhibited a dense, mud-cracked morphology (6 μm thick) with a composition of TiF₃ (6.7%), TiOF₂ (4.6%), TiO₂ (8.7%), TiF₄ (9.4%), AlF₃ (16.7%) and PA-Ti amorphous matrix (53.9%). The film-forming process was divided into three stages: dissolution of the substrate, growth of the film, and the dynamic equilibrium of the film growth/dissolution. After PA film treatment, the galvanic corrosion current density with coupled metals aluminum alloy (AA6061: 0.120 μA/cm2), brass (H59: 0.036 μA/cm2) and steel (Q235: 0.093 μA/cm2) was reduced by 1–2 orders of magnitude, and the organic coating adhesion increased by 99.54%. Following saltwater immersion, adhesion decreased by only 9.95%. This work provides a practical green pretreatment strategy for titanium alloys.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140219"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171507","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

Efficient degradation of sulfamethoxazole via photocatalytic activation of Peroxymonosulfate by CuO/g-C3N4 CuO/g-C3N4光催化活化过氧单硫酸盐高效降解磺胺甲恶唑

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-05 DOI: 10.1016/j.matlet.2026.140222

Yulong Wang , Ziye Feng , Sainan Zheng , Junfang Cheng , Song Han

{"title":"Efficient degradation of sulfamethoxazole via photocatalytic activation of Peroxymonosulfate by CuO/g-C3N4","authors":"Yulong Wang , Ziye Feng , Sainan Zheng , Junfang Cheng , Song Han","doi":"10.1016/j.matlet.2026.140222","DOIUrl":"10.1016/j.matlet.2026.140222","url":null,"abstract":"<div><div>Sulfamethoxazole (SMX) pollution poses an urgent environmental challenge, requiring efficient and sustainable degradation approaches. Graphitic carbon nitride (g-C3N4) is a promising photocatalytic material, yet its performance is limited by rapid charge recombination and narrow visible-light absorption. To address these limitations, CuO/g-C3N4 composites with varying CuO ratios were synthesized via a precipitation-calcination method. Structural and optical characterization confirmed enhanced photocatalytic properties compared to pure g-C3N4. The degradation of SMX was evaluated in a peroxymonosulfate (PMS) activation system under simulated natural light, with systematic investigation of key parameters including CuO loading, catalyst dosage, PMS concentration, and solution pH. Under optimal conditions (2% CuO, 0.1 g/L catalyst, 2 mmol/L PMS, pH 7), the CuO/g-C3N4/PMS system achieved 97.59% SMX removal within 20 min, significantly outperforming pristine g-C3N4. Radical quenching experiments identified •O2− and •OH as the primary active species, and a plausible degradation mechanism is proposed accordingly.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140222"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171598","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

Achieving strength-ductility synergy in selective laser melted 304 L via a gradient heterogeneous microstructure 通过梯度非均质显微结构实现选择性激光熔化304 L的强度-延性协同

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-28 DOI: 10.1016/j.matlet.2026.140174

Hong-Fei Ran , Xiao Li , Fu-Kun Ma , Bing Li , Bo Guan , Jing Xu , Yang Cao , Chang-Jian Yan

引用次数: 0

V2O5/CNF composites for efficient microwave absorption V2O5/CNF复合材料的高效微波吸收

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-02 DOI: 10.1016/j.matlet.2026.140201

Chao Feng, Zhiqiang Song, Fei Wan, Andreas Hermann Gerdes, Lan Wang, Linlin Zhang

引用次数: 0

A multilayer 3D chiral AIE-active polymer: synthesis and optical behavior in different media 一种多层三维手性aie活性聚合物的合成及其在不同介质中的光学行为

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.matlet.2026.140133

Junjie Jiang , Jie Cui , Yaru Song , Sai Zhang

引用次数: 0

The tritium-induced radiation ageing mechanism of epoxy resin adhesives 环氧树脂胶粘剂氚致辐射老化机理研究

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-31 DOI: 10.1016/j.matlet.2026.140183

Wei Peng, Shijun Qian, Chunyu Li, Wenbo Jiang, Junbo Lv, Yuanxiang Xu

引用次数: 0

Printed gas sensors based on nanostructured palladium and tin oxide for methane detection 基于纳米结构钯和氧化锡的甲烷检测印刷气体传感器

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-01-30 DOI: 10.1016/j.matlet.2026.140175

Ivan S. Vlasov , Mohammad Reza Ghorbani Fard , Alexey A. Vasiliev , Alexey A. Efimov , Olesya V. Vershinina , Yuri Yu. Lebedinskii , Andrey M. Markeev , Alexey V. Katsaba , Ivan A. Volkov , Victor V. Ivanov

{"title":"Printed gas sensors based on nanostructured palladium and tin oxide for methane detection","authors":"Ivan S. Vlasov , Mohammad Reza Ghorbani Fard , Alexey A. Vasiliev , Alexey A. Efimov , Olesya V. Vershinina , Yuri Yu. Lebedinskii , Andrey M. Markeev , Alexey V. Katsaba , Ivan A. Volkov , Victor V. Ivanov","doi":"10.1016/j.matlet.2026.140175","DOIUrl":"10.1016/j.matlet.2026.140175","url":null,"abstract":"<div><div>This work presents compact thermocatalytic and chemoresistive methane sensors fabricated by microplotter printing of colloidal inks containing PdOx and SnO2 nanoparticles synthesized by spark discharge. Microhotplate chips with 20–30 <math><mi>μ</mi></math>m-thick glass-ceramic membranes served as platforms for printed catalytic and sensing layers. Thermocatalytic devices employed nanocomposite inks with 63 wt% PdOx and 37 wt% SnO2, whereas chemoresistive layers were printed using 30–40 wt% PdOx compositions. The chips with printed layers were annealed at 600 °C to provide stability of their composition and microstructure at working temperatures up to 500 °C. The thermocatalytic sensors demonstrated a response of 51 mV to 1% methane and a detection limit as low as 6 ppm at a power consumption of about 350 mW. The chemoresistive sensors exhibited conductance changes up to 5.2 for 1% methane and a detection limit of 45 ppm at a power consumption of about 140 mW. The obtained results highlight the potential of spark-discharge-synthesized nanoparticles and microplotter printing for manufacturing inexpensive gas sensors suitable for combustible gas monitoring.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140175"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171391","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

Nanocrystalline pyrochlore Ce2Zr2O7 and κ-Ce2Zr2O8 phases with high specific surface area prepared via a carbon-shell approach 采用碳壳法制备了具有高比表面积的纳米焦绿石Ce2Zr2O7和- ce2zr2o8相

IF 2.7 4区材料科学

Materials Letters Pub Date : 2026-04-15 Epub Date: 2026-02-03 DOI: 10.1016/j.matlet.2026.140209

Vladimir O. Stoyanovskii, Aleksey A. Vedyagin

{"title":"Nanocrystalline pyrochlore Ce2Zr2O7 and κ-Ce2Zr2O8 phases with high specific surface area prepared via a carbon-shell approach","authors":"Vladimir O. Stoyanovskii, Aleksey A. Vedyagin","doi":"10.1016/j.matlet.2026.140209","DOIUrl":"10.1016/j.matlet.2026.140209","url":null,"abstract":"<div><div>This paper reports a new approach for the synthesis of the Y- and La-substituted nanocrystalline pyrochlore phase (pyr-Ce2Zr2O7). To prevent the sintering of the particles during the high-temperature reduction, the pristine material t-Zr0.45Ce0.45Y0.05La0.05O2 was synthesized in a carbon shell. The subsequent re-oxidation of the obtained phase under mild conditions resulted in its transformation into nanocrystalline κ-Ce2Zr2O8. Thus, it was demonstrated that the use of a carbon-shell approach enables the size stabilization of the oxide particles. At a synthesis temperature of 1400 °C and a duration of 6 h, the content of the pyrochlore-type cation ordering phase was about 60 wt%. Its specific surface area was as high as 74 m2/g, and the crystallites were of ∼15 nm in size. The highly dispersed pyr-Ce2Zr2O7+δ phase possesses a higher average oxidation state under atmospheric conditions compared to the bulk pyr-Ce2Zr2O7+δ phase synthesized by the conventional technique.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"409 ","pages":"Article 140209"},"PeriodicalIF":2.7,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146171510","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