Materials Chemistry and Physics最新文献_第8页

Immobilization of gold nanoparticles on electrospun polyacrylonitrile/carbon nanotube nanofiber for self-powered electrochemical biosensing of myoglobin

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-14 DOI: 10.1016/j.matchemphys.2025.130722

Mingye Zhao , Ling Wang , Hui Xu

{"title":"Immobilization of gold nanoparticles on electrospun polyacrylonitrile/carbon nanotube nanofiber for self-powered electrochemical biosensing of myoglobin","authors":"Mingye Zhao , Ling Wang , Hui Xu","doi":"10.1016/j.matchemphys.2025.130722","DOIUrl":"10.1016/j.matchemphys.2025.130722","url":null,"abstract":"<div><div>Polyacrylonitrile-carbon nanotube (PAN-CNT) nanofibers were prepared on indium tin oxide (ITO) electrode using electrospinning technique, and gold nanoparticles (AuNPs) were subsequently modified on ITO-PAN-CNT electrode by electrostatic adsorption to construct ITO-PAN-CNT–COOH–AuNPs substrate electrode. The self-powered biosensor consists of a PAN-CNT–COOH–AuNPs-aptamer functionalized biocathode and a PAN-CNT–COOH–AuNPs-glucose oxidase (GO<sub>x</sub>) bioanode. By capturing the change in electrode spatial potential resistance before and after myoglobin (Mb), This interaction affects the transmission of electrons between the redox probe [Fe(CN)<sub>6</sub>]<sup>3-</sup> an d the biocathode, establishing a linear relationship between E<sup>OCV</sup> and Mb concentration. The self-powered biosensor displayed a highly sensitive response to the target Mb over a concentration range from 5 to 5 × 10<sup>3</sup> ng mL<sup>−1</sup>, with a limit of detection reaching less than 0.23 ng mL<sup>−1</sup> (S/N = 3), and exhibited outstanding stability and selectivity.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130722"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644000","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Preparation and evaluation of near-infrared and pH dual-responsive mesoporous carbon nanospheres for controlled drug release

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-14 DOI: 10.1016/j.matchemphys.2025.130699

Handa Liu , Kexin An , Ning Qiao , Lihua Liu , Xiaoran Sun , Xuepeng Zhang , Hongzhou Shang

{"title":"Preparation and evaluation of near-infrared and pH dual-responsive mesoporous carbon nanospheres for controlled drug release","authors":"Handa Liu , Kexin An , Ning Qiao , Lihua Liu , Xiaoran Sun , Xuepeng Zhang , Hongzhou Shang","doi":"10.1016/j.matchemphys.2025.130699","DOIUrl":"10.1016/j.matchemphys.2025.130699","url":null,"abstract":"<div><div>In this study, a multifunctional nanoplatform was developed. Mesoporous carbon nanospheres were prepared using silica microspheres as hard templates through a hard-template method. Low molecular weight polyethyleneimine and succinic anhydride were grafted onto the spheres through amidation reactions to obtain near-infrared and pH dual-responsive mesoporous carbon nanospheres for targeted controlled drug release and photothermal therapy. The successful preparation of the nanocomposites with a particle size of approximately 120 nm was confirmed by SEM and TEM. The in-vitro cytotoxicity and photothermal performance were evaluated, and the results showed that the carrier exhibited low toxicity, with a survival rate of 91.94 % for mouse macrophages (RAW264.7). Additionally, the carrier demonstrated excellent photothermal stability with a photothermal conversion efficiency of 39.05 % and a maximum temperature increase of 39.6 °C. Drug adsorption tests revealed that the carrier's maximum equilibrium adsorption capacity for curcumin was 133.3 mg L<sup>−1</sup>. In-vitro drug release experiments showed that the release performance could be controlled by pH and near-infrared laser irradiation. Under conditions of pH = 6 and near-infrared light, the cumulative drug release rate was 15.1 %. The excellent targeting, curcumin loading, and release performance of the carrier offer new possibilities for integrating photothermal therapy with chemotherapy for synergistic tumor treatment.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130699"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Surface renewal mechanism during laser-cleaning of aged silicone rubber composites

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-14 DOI: 10.1016/j.matchemphys.2025.130728

Yilin Meng , Chunming Wang , Wei Zhang , Hailei Meng , Hao Shen , Jun Yong , Chao Zhou , Hui Liu

{"title":"Surface renewal mechanism during laser-cleaning of aged silicone rubber composites","authors":"Yilin Meng , Chunming Wang , Wei Zhang , Hailei Meng , Hao Shen , Jun Yong , Chao Zhou , Hui Liu","doi":"10.1016/j.matchemphys.2025.130728","DOIUrl":"10.1016/j.matchemphys.2025.130728","url":null,"abstract":"<div><div>Silicone rubber composite insulators are an important component of the power grid, but prolonged use can cause surface aging and decrease hydrophobicity, leading to safety hazards. Removing aged silicone rubber can improve hydrophobicity and extend service time, but there is no suitable means to achieve these objectives due to the high safety requirements of transmission lines. Therefore, we researched laser cleaning technology to remove aged silicone rubber to restore hydrophobicity. The effect of removal depth and microscopic morphology under defocusing and spot overlap were investigated. It was found that silicone rubber was mainly removed by decomposition when the defocusing was less than 20 mm, while combustion removal occurred when the defocusing was more than 30 mm. The spherical, massive and irregular particles were produced by the decomposition mechanism, while products with porous structure were generated by combustion. Both decomposition and combustion could effectively improve the hydrophobicity of aged composite insulators. The maximum contact angle could be increased from 75° to about 140°, but combustion increased the surface roughness from Ra 1.78 μm to a maximum of Ra 6 μm, while the maximum roughness is only Ra 3 μm with decomposition. The Shore A hardness of the laser-treated samples remained relatively stable, ranging from 76 HA to 80 HA.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130728"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Magnetic multifunctional particles with molybdenum dichalcogenide nanostructures for efficient removal of organic dyes and their detection using SERS

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-14 DOI: 10.1016/j.matchemphys.2025.130701

Shilpa R. Amonkar, Sudhir Cherukulappurath

{"title":"Magnetic multifunctional particles with molybdenum dichalcogenide nanostructures for efficient removal of organic dyes and their detection using SERS","authors":"Shilpa R. Amonkar, Sudhir Cherukulappurath","doi":"10.1016/j.matchemphys.2025.130701","DOIUrl":"10.1016/j.matchemphys.2025.130701","url":null,"abstract":"<div><div>The development of novel multifunctional composites for environmental applications has been in focus due to increased pollution and health concerns. Organic dyes, in particular, pose a serious threat to aquatic life and human health as they can enter into the ecosystem from the industrial wastes that are dumped into water bodies such as lakes and rivers. Apart from the conventional photocatalytic materials, two-dimensional materials such as MoS<sub>2</sub> have been explored to remove these pollutants. In this work, a multifunctional magnetic-plasmonic composite with Fe<sub>3</sub>O<sub>4</sub> core covered with graphene oxide and Ag nanoparticles followed by MoS<sub>2</sub> layer (Fe<sub>3</sub>O<sub>4</sub>@GO@Ag@MoS<sub>2</sub>) is synthesized using chemical methods. The composite particles were characterized using different analytical methods such as powder X-ray diffraction, Raman spectroscopy, vibrating sample magnetometer, and UV–Vis spectrophotometry. The prepared samples were utilized for the adsorption and removal of organic dyes such as rhodamine 6G, malachite green, methylene blue, and methyl orange. The adsorption kinetics were studied using a pseudo-first-order fitting. Furthermore, we used surface-enhanced Raman scattering to monitor the organic dye removal from the solution. Our experimental results showed that the composite particle system showed enhanced adsorption in comparison to simpler systems such as Fe<sub>3</sub>O<sub>4</sub>@MoS<sub>2</sub>. These multifunctional particles also showed good photocatalytic capability for the degradation of the dyes. Excellent adsorption properties, recyclability, and photocatalytic properties make the multifunctional composite promising candidates for environmental applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130701"},"PeriodicalIF":4.3,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143714757","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Evaluation of the bone-enhancing potential of calcium phosphate coatings with different morphologies on titanium surfaces under oxidative stress conditions

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130703

Keyuan Xu , Jia Chen , Hongyu Luo , Shuangyun Liu , Shaobo Ni , Xinkun Shen , Yilong Dong , Xiaoyi Pan

引用次数: 0

Enhancing moist-heat resistance of cesium-doped tungsten bronze nanoparticles via ultrathin silica coating: A sol-gel approach for optimized near-infrared absorption

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130715

Mizuki Ito , Keisuke Machida , Shuhei Nakakura , Masato Yanase , Yoshio Kobayashi

{"title":"Enhancing moist-heat resistance of cesium-doped tungsten bronze nanoparticles via ultrathin silica coating: A sol-gel approach for optimized near-infrared absorption","authors":"Mizuki Ito , Keisuke Machida , Shuhei Nakakura , Masato Yanase , Yoshio Kobayashi","doi":"10.1016/j.matchemphys.2025.130715","DOIUrl":"10.1016/j.matchemphys.2025.130715","url":null,"abstract":"<div><div>Near-infrared (NIR) absorbing materials are widely used to enhance energy efficiency in window applications. Cesium-doped tungsten bronze (CsWO) nanoparticles, known for their strong NIR absorption, comprise metal oxides with tungsten having a reduced oxidation state (W<sup>5+</sup>) and intercalated Cs<sup>+</sup>. However, in humid environments, CsWO nanoparticles are susceptible to degradation due to the oxidation of W<sup>5+</sup> and elution of Cs<sup>+</sup>, leading to decolorization and diminished NIR absorption. This study presents a simple and effective method for enhancing the stability of CsWO nanoparticles by coating them with ultrathin silica layers (CsWO/SiO<sub>2</sub>). The silica coating, applied via a sol-gel process, is optimized by controlling the concentrations of silicon alkoxide, base catalyst, water, and CsWO nanoparticles. The thickness of the silica layer, which can be precisely tuned at the nanoscale, depends on the reaction temperature. Notably, the single-nanometer-scale silica shell minimally affects the optical absorption properties of CsWO/SiO<sub>2</sub> while mitigating light scattering associated with increased particle size. A 5 nm-thick silica shell significantly improves the resistance of CsWO nanoparticles to moist-heat conditions compared to uncoated CsWO. Furthermore, the degradation mechanism of CsWO/SiO<sub>2</sub> under humid conditions is elucidated, highlighting the role of Cs<sup>+</sup> elution and silica dissolution in the stability of coated nanoparticles.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130715"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143644126","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Preparation of a composite coating of bimodal TiO2 nanotubes with deposited Ag nanoparticles and its biological performance

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130710

Wenjing Bai, Fengcang Ma, Jianghui Zhao, Ping Liu, Wei Li, Ke Zhang, Xiaohong Chen

{"title":"Preparation of a composite coating of bimodal TiO2 nanotubes with deposited Ag nanoparticles and its biological performance","authors":"Wenjing Bai, Fengcang Ma, Jianghui Zhao, Ping Liu, Wei Li, Ke Zhang, Xiaohong Chen","doi":"10.1016/j.matchemphys.2025.130710","DOIUrl":"10.1016/j.matchemphys.2025.130710","url":null,"abstract":"<div><div>Titanium implants are vulnerable to bacterial infections due to its poor antibacterial capacity, making it essential to enhance the antimicrobial ability to ensure long-term clinical effectiveness. In this study, composite coatings of bimodal TiO<sub>2</sub> nanotubes, deposited with Ag nanoparticles, were prepared on TC4 substrates using a two-step anodization and hydrothermal method. The adhesion strength of the TiO<sub>2</sub> nanotube coatings was measured to be 1B prepared with the one-step anodization but 5B with the two-step anodization, indicating that the adhesion strength of the coating obtained through two-step anodization was improved significantly. Furthermore, the microstructure, surface hydrophilicity, corrosion resistance, and antimicrobial properties of the sample surface were tested. The results showed that nanotubes consist of irregular, circular tubes with an average wall thickness of 20 nm. AgNPs were deposited and uniformly dispersed on the surface of the TiO<sub>2</sub> nanotubes. As the Ag concentration increased, the nanotube wall thickness increased by 5–30 nm. The titanium dioxide nanotube coating obtained through anodizing was superhydrophilic, with a water contact angle of 10°. This angle slightly increased after Ag-deposited but the coating retained its overall hydrophilic properties. The Ag-deposited TiO<sub>2</sub> nanotube coatings exhibit excellent corrosion resistance in simulated oral fluids. Furthermore, the coatings demonstrated strong antibacterial efficacy, achieving maximum inhibition rates of 67.2 % against <em>Escherichia coli</em> and 85.6 % against <em>Staphylococcus aureus</em>.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130710"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143687286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Development of biocomposites based on cassava bagasse and coconut fiber for substituting plastic pots: Evaluation of physical-mechanical, morphological and structural properties

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130697

Eduardo Argote Ortiz , Elsa Susana Cajiao Buitrón , Heidi Andrea Fonseca Florido , Pedro Alban Bolaños , Héctor Samuel Villada Castillo

{"title":"Development of biocomposites based on cassava bagasse and coconut fiber for substituting plastic pots: Evaluation of physical-mechanical, morphological and structural properties","authors":"Eduardo Argote Ortiz , Elsa Susana Cajiao Buitrón , Heidi Andrea Fonseca Florido , Pedro Alban Bolaños , Héctor Samuel Villada Castillo","doi":"10.1016/j.matchemphys.2025.130697","DOIUrl":"10.1016/j.matchemphys.2025.130697","url":null,"abstract":"<div><div>The excessive use of plastic materials has negatively impacted the environment, aquifers, and terrestrial ecosystems, leading to the development of composite materials from natural, renewable sources, and agricultural waste, among others. For this reason, a biocomposite (BM) material was developed from cassava bagasse (CB) with coconut fiber (CF) for application in the production and subsequent replacement of plastic pots (PP). Firstly, thermal, morphological, mechanical, and water absorption characterization of the FC showed that it is thermally stable up to approximately 250 °C. BM was then manufactured from gelatinized cassava bagasse (GCB) with different CF contents (20, 27.5, 35, 42.5, and 50 %) by a mix design using the compression molding technique. In this step, the flexural mechanical properties and water absorption were evaluated, finding a reduction in water absorption and an increase in mechanical properties with 63 % GCB and 37 % CF, due to a higher interfacial bonding between the fibers and the matrix. Consequently, it could be established that FC strengthens BM since the characterization techniques evidenced the formation of new chemical structures and intermolecular bonds. In addition, using two agro-industrial wastes to form the BM contributes to reducing the environmental impact, because they come from renewable sources and are environmentally friendly.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"340 ","pages":"Article 130697"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143748455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Copper-neodymium coordination networks: An electrochemical approach for efficacious caffeine detection in beverages

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130708

Jeevanantham Arumugam, Ganesan Shanmugam, Monisha Venkatesan, Sachin Sreedhar

{"title":"Copper-neodymium coordination networks: An electrochemical approach for efficacious caffeine detection in beverages","authors":"Jeevanantham Arumugam, Ganesan Shanmugam, Monisha Venkatesan, Sachin Sreedhar","doi":"10.1016/j.matchemphys.2025.130708","DOIUrl":"10.1016/j.matchemphys.2025.130708","url":null,"abstract":"<div><div>A novel copper neodymium octahedral shaped metal organic frameworks (Cu–Nd MOFs) was used to modify glassy carbon electrode (GCE) for caffeine (CAF) detection in commercial beverages (0.1–1.5 μM) with notable low detection limit (LOD) of 0.098 μM, and a limit of quantification (LOQ) of 0.327 μM. This enhanced sensitivity was attributed to the redox reaction of Cu (Cu<sup>2+</sup> → Cu<sup>+</sup>) and Nd (Nd<sup>3+</sup> → Nd<sup>2+</sup>) ions present within the framework structure. An exceptional reproducibility (RSD = 2.16 %), stability (RSD = 2.48 %), and selectivity of Cu–Nd MOFs/GCE towards CAF makes it as a promising electrochemical sensor material. Moreover, Cu–Nd MOFs has large electroactive surface area, superior mass transport, efficient ionic conductivity, synergistic effects, and chemical stability making it a potential material to be implemented in sensor devices to detect the minimal presence of CAF. Overall, Cu–Nd MOFs/GCE shows a significant potential for real-time applications for efficacious sensing of CAF in various food products.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130708"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Development of conductive fractal copper–polypyrrole nanocomposites for dual corrosion inhibition and ammonia detection in metallic food containers

IF 4.3 3区材料科学

Materials Chemistry and Physics Pub Date : 2025-03-13 DOI: 10.1016/j.matchemphys.2025.130696

Abdelqader El Guerraf , Sana Ben Jadi , Meriyem Mouloudi , Mostafa Chhiba , Mohamed Essahli , Mohammed Bazzaoui , El Arbi Bazzaoui

{"title":"Development of conductive fractal copper–polypyrrole nanocomposites for dual corrosion inhibition and ammonia detection in metallic food containers","authors":"Abdelqader El Guerraf , Sana Ben Jadi , Meriyem Mouloudi , Mostafa Chhiba , Mohamed Essahli , Mohammed Bazzaoui , El Arbi Bazzaoui","doi":"10.1016/j.matchemphys.2025.130696","DOIUrl":"10.1016/j.matchemphys.2025.130696","url":null,"abstract":"<div><div>In the present study, we present the development and characterization of a polypyrrole (PPy)-based nanocomposite embedded with fractal copper (Cu) crystals, engineered to provide enhanced corrosion resistance and ammonia-sensing capability for metallic food packaging. The nanocomposite coatings were prepared by electrodeposition on industrial tinplate electrodes in oxalic acid (PPy@OxAc) and sodium salicylate (PPy@NaSa) media. Structural analyses via SEM and AFM revealed distinct morphologies with copper crystallization forming leaf-like fractal structures, promoting high surface roughness and contact angles (96° for PPy@OxAc and 93° for PPy@NaSa), indicating hydrophobicity advantageous for corrosion resistance. Corrosion performance, evaluated through open circuit potential (OCP), electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization in a 3 % NaCl solution, demonstrated an over 95 % inhibition efficiency. This was evidenced by a significant decrease in corrosion current density from 2.238 μA/cm<sup>2</sup> to 0.083 μA/cm<sup>2</sup> over immersion times up to 144 h. Ammonia exposure tests highlighted a significant and reversible increase in resistance upon NH<sub>3</sub> exposure, linked to electron or proton transfer mechanisms in the PPy matrix. These results support the dual function of Cu–PPy nanocomposites in providing prolonged corrosion protection and real-time detection of spoilage indicators, marking a substantial step toward sustainable and intelligent food packaging solutions.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"339 ","pages":"Article 130696"},"PeriodicalIF":4.3,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143628508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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