Coatings最新文献_第2页

Effect of SRB on the Electrochemical Performance of Aluminum-Based Sacrificial Anodes in Marine Mud SRB对海洋泥浆中铝基牺牲阳极电化学性能的影响

3区材料科学

Coatings Pub Date : 2025-12-25 DOI: 10.3390/coatings16010026

Bin Zhou, Wei Zhang, Xinwen Zhang, Weiyin Quan, Hua Huang, Zhifeng Lin

{"title":"Effect of SRB on the Electrochemical Performance of Aluminum-Based Sacrificial Anodes in Marine Mud","authors":"Bin Zhou, Wei Zhang, Xinwen Zhang, Weiyin Quan, Hua Huang, Zhifeng Lin","doi":"10.3390/coatings16010026","DOIUrl":"https://doi.org/10.3390/coatings16010026","url":null,"abstract":"This study investigated the degradation of aluminum-based sacrificial anodes caused by sulfate-reducing bacteria (SRB) in marine mud. Through self-discharge tests simulating real cathodic protection conditions, alongside macroscopic observations, electrochemical analysis, and microscopic characterization, we systematically elucidated the corrosion behavior and mechanisms of the anodes with and without SRB. The results showed that the electrochemical capacity of anodes in SRB-inoculated mud was only 1281.28 Ah·kg−1 (efficiency: 44.82%), failing to meet the design requirement of ≥1500 Ah·kg−1. In contrast, in sterile mud, the capacity was 1972.84 Ah·kg−1 (efficiency: 69.01%), which met the standard. SRB promoted the formation of discrete corrosion pits with depths reaching up to 0.43 mm, 3.07 times deeper than those observed under sterile conditions. The local pH within the pits dropped to 3–4, accelerating the selective dissolution of active elements such as Al and Zn. Mechanistic analysis revealed that the sulfides produced by SRB not only disrupt the passive film but also exacerbate the inefficient consumption of the anode through a positive feedback loop involving “acidic corrosion and electron consumption”. This led to a reduction in the protective current density, accompanied by significant fluctuations. This study provides the underlying mechanisms by which SRB degrade the performance of sacrificial anodes and valuable insights for optimizing the design of cathodic protection systems for steel structures in marine mud environments.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"26-26"},"PeriodicalIF":0.0,"publicationDate":"2025-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330971","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Corrosion Resistance of Water-Based Aluminum Phosphate Coatings via Graphene Oxide Modification: Mechanisms and Long-Term Performance 通过氧化石墨烯改性提高水性磷酸铝涂层的耐腐蚀性：机理和长期性能

3区材料科学

Coatings Pub Date : 2025-12-20 DOI: 10.3390/coatings16010011

Ding Feng, Jiahui Xu, Xiaoxin Wei, Jiangdong Cao, Hongyan Wu, Lang Bai, Yujie Ma, Dongqian Li, Yilin Wang, Jiahan You, Bochen Jiang

{"title":"Enhanced Corrosion Resistance of Water-Based Aluminum Phosphate Coatings via Graphene Oxide Modification: Mechanisms and Long-Term Performance","authors":"Ding Feng, Jiahui Xu, Xiaoxin Wei, Jiangdong Cao, Hongyan Wu, Lang Bai, Yujie Ma, Dongqian Li, Yilin Wang, Jiahan You, Bochen Jiang","doi":"10.3390/coatings16010011","DOIUrl":"https://doi.org/10.3390/coatings16010011","url":null,"abstract":"In this study, we have developed a water-based aluminum phosphate (WAP) coating consisting of a base layer and a surface layer. Graphene oxide (GO) was used to modify the base layer. Three different GO concentrations—0.5, 0.75, and 1 wt.%—were employed to assess their impact on the corrosion resistance of the coating and to explore the underlying mechanisms. The corrosion resistance mechanism was also examined. In the coating, GO combined with phosphate to form large blocks that effectively blocked the pores, and the porosity decreased with the increase in GO content. This led to an improvement in the substrate protection efficiency by over 10%. Impedance spectroscopy revealed that the main mechanism behind the enhanced corrosion resistance was the shielding effect of GO, which created a “maze effect” that improved the coating’s protective properties. However, an excessive amount of GO reduced the corrosion resistance of the coating. Overall, the WAP coating modified with 0.75 wt.% GO exhibited the best corrosion resistance.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"11-11"},"PeriodicalIF":0.0,"publicationDate":"2025-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/16/1/11/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

ATP-Responsive ZIF-90 Nanocontainers Encapsulating Natural Antifoulants for Intelligent Marine Coatings 用于智能船舶涂料的atp响应型ZIF-90纳米容器封装天然防污剂

3区材料科学

Coatings Pub Date : 2025-12-19 DOI: 10.3390/coatings16010007

Yanrong Chao, Xinliang Feng, Bin‐Gui Wang, Ling‐Hong Meng, Peng Qi, Yan Zeng, Peng Wang

{"title":"ATP-Responsive ZIF-90 Nanocontainers Encapsulating Natural Antifoulants for Intelligent Marine Coatings","authors":"Yanrong Chao, Xinliang Feng, Bin‐Gui Wang, Ling‐Hong Meng, Peng Qi, Yan Zeng, Peng Wang","doi":"10.3390/coatings16010007","DOIUrl":"https://doi.org/10.3390/coatings16010007","url":null,"abstract":"Marine biofouling presents a persistent challenge for maritime industries, necessitating the development of eco-friendly and intelligent antifouling strategies. In this work, an ATP-responsive nanocontainer was developed by encapsulating a natural organic compound (CS106-10), isolated from Talaromyces trachyspermus in cold seep sediments, together with D-phenylalanine (D-Phe) into ZIF-90 nanoparticles (D-Phe/CS106-10@ZIF-90). These nanoparticles were incorporated into zinc acrylate resin to fabricate a novel self-polishing antifouling coating. CS106-10, as a natural antifoulant, provided efficient and environmentally sustainable bactericidal activity, while D-Phe acted as a synergistic adjuvant to inhibit and disrupt biofilm formation. More importantly, the ATP-responsive ZIF-90 framework enabled controlled, on-demand release of antifouling agents in response to local metabolic signals associated with biofilm growth. Laboratory and real-sea evaluations confirmed that the composite coating effectively suppressed biofilm formation and significantly reduced the required dosage of conventional toxic antifoulants. This study integrates a natural antifoulant with an ATP-responsive metal–organic framework, providing new insight for developing antifouling coatings.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"16 1","pages":"7-7"},"PeriodicalIF":0.0,"publicationDate":"2025-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Performance of Triisopropanolamine-Modified Polycarboxylate Cement Grinding Aid 三异丙醇胺改性聚羧酸盐水泥助磨剂的合成及性能研究

3区材料科学

Coatings Pub Date : 2025-12-15 DOI: 10.3390/coatings15121478

Shaowei Song, Yan Yan, Yu Liu, Chao Wang, Liyan Wang, Ping Zhang, Huan Wang

{"title":"Synthesis and Performance of Triisopropanolamine-Modified Polycarboxylate Cement Grinding Aid","authors":"Shaowei Song, Yan Yan, Yu Liu, Chao Wang, Liyan Wang, Ping Zhang, Huan Wang","doi":"10.3390/coatings15121478","DOIUrl":"https://doi.org/10.3390/coatings15121478","url":null,"abstract":"In this study, a triisopropanolamine (TIPA)-modified polycarboxylate cement grinding aid was synthesized via a free radical polymerization reaction, and its effects on cement properties were investigated. The synthesized grinding aid was evaluated through cement grinding experiments, by comparing cement samples with and without the additive. The influences on particle size distribution, specific surface area, residue content, setting behavior, flowability, and mechanical strength were systematically evaluated. The results demonstrated that the modified polycarboxylate cement grinding aid significantly refined size distribution of particles, enlarged the specific surface area to 4900 cm2/g (27.9% increase), decreased 45 μm residue content to 0.8%, accelerated setting, and improved the flowability of the cement paste. Strength tests of cement mortar indicated that the additive improved both early and late compressive strength, with 3d and 28d strengths increasing by 6.5 MPa and 5.7 MPa, respectively, compared to the blank sample, providing strong theoretical support for its potential use in industrial cement production.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1478-1478"},"PeriodicalIF":0.0,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1478/pdf?version=1765810373","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Aging Mechanism of HNBR Vulcanizate in High Temperature Oil and Water Environment 高温油水环境下HNBR硫化胶老化机理研究

3区材料科学

Coatings Pub Date : 2025-12-13 DOI: 10.3390/coatings15121473

Jun-an Lu, Xuliang Zhang, Jianglin Chen, Xia Tianguo, Jin Tao, Haobo Yu

{"title":"Study on Aging Mechanism of HNBR Vulcanizate in High Temperature Oil and Water Environment","authors":"Jun-an Lu, Xuliang Zhang, Jianglin Chen, Xia Tianguo, Jin Tao, Haobo Yu","doi":"10.3390/coatings15121473","DOIUrl":"https://doi.org/10.3390/coatings15121473","url":null,"abstract":"Rubber is a crucial sealing material in the petroleum industry. Due to increasingly stringent industrial development, safety performance requirements are becoming extremely high, resulting in higher oil resistance requirements for rubber. HNBR exhibits good heat resistance, high tensile strength, tear strength, and excellent wear resistance. However, a certain degree of aging will also occur in the actual service process, which will affect the service life of rubber. In order to explore the factors affecting the aging behavior of HNBR vulcanizates in an oil–water environment at 150 °C, HNBR vulcanizates were aged in an independent environment. IR (Infrared) spectroscopy analysis (FTIR), crosslinking density analysis, dynamic mechanical analysis (DMA), and scanning electron microscopy (SEM) testing were used to characterize the microstructural and morphological changes in HNBR vulcanizates before and after aging. The aging mechanism of HNBR vulcanizates in different environments was obtained. Since factors such as rubber fillers remained constant throughout the experimental process, the influence of formulation variables on aging was disregarded.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1473-1473"},"PeriodicalIF":0.0,"publicationDate":"2025-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1473/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147914588","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sustainable Biomass Functional Monomer-Modified Polycarboxylate Superplasticizers Enable the Creation of High-Performance Cement Pastes 可持续生物质功能单体改性聚羧酸酯高效减水剂使高性能水泥浆的生产成为可能

3区材料科学

Coatings Pub Date : 2025-12-10 DOI: 10.3390/coatings15121459

Yan Yu, Qifei Du, Wan‐Yue Diao, Chao Wang, Liyan Wang, Sa Lv, Lingwei Kong, Ping Zhang, Yue Xi, Huan Wang

{"title":"Sustainable Biomass Functional Monomer-Modified Polycarboxylate Superplasticizers Enable the Creation of High-Performance Cement Pastes","authors":"Yan Yu, Qifei Du, Wan‐Yue Diao, Chao Wang, Liyan Wang, Sa Lv, Lingwei Kong, Ping Zhang, Yue Xi, Huan Wang","doi":"10.3390/coatings15121459","DOIUrl":"https://doi.org/10.3390/coatings15121459","url":null,"abstract":"In this work, a complex and eco-friendly biomass raffinose monomer-modified polycarboxylate superplasticizer (RAF-PCE) was designed and synthesized via the free radical polymerization technique to simultaneously improve paste fluidity and delay fluidity loss in concrete applications. The adsorption, fluidity, and early hydration behaviors of cementitious systems after the introduction of RAF-PCE have been systematically investigated. Experimental results demonstrate that the hydroxy group in raffinose promotes the adsorption of RAF-PCE on the cement particles, thereby elevating the dispersion characteristic of cement paste through electrostatic repulsion, enabling excellent initial fluidity (310 mm). Additionally, its steric hindrance effect has also been identified to play a role in improving paste fluidity and reducing the slump loss of cement slurry. Detailed analyses unveil that RAF-PCE can reduce the concentration of free Ca2+ in the pore solution through complexation with Ca2+, which prevents the early precipitation of hydration products and realizes a delayed effect on cement hydration, ultimately evolving into a homogeneous and compact microstructure for superior compressive tensile strength of the cement mortar. The 28-day compressive strength of cement incorporating RAF-PCE reached 79.2 MPa, representing a 5.5% enhancement over conventional PCE systems. Our work provides novel insights into the promotion of innovative and green development in the concrete industry by utilizing renewable biomass resources for high-performance materials.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1459-1459"},"PeriodicalIF":0.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1459/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333502","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Corrosion Inhibition of Q235B Steel in Sulfuric Acid by a Novel Hybrid Film Derived from L-Aspartic Acid β-Methyl Ester and Glutaraldehyde l -天冬氨酸β-甲酯与戊二醛复合膜对Q235B钢在硫酸中的协同缓蚀作用

3区材料科学

Coatings Pub Date : 2025-12-10 DOI: 10.3390/coatings15121460

Rongguo Chen, Weichang Chen, Xiao‐Yu Jiang, Lang Lin, Zhigang Zhang, Yilan Chen, Cui-Cui Ding, Rengui Weng, Yijing Wang, Mingdi Xu, Jingjing Yu

{"title":"Synergistic Corrosion Inhibition of Q235B Steel in Sulfuric Acid by a Novel Hybrid Film Derived from L-Aspartic Acid β-Methyl Ester and Glutaraldehyde","authors":"Rongguo Chen, Weichang Chen, Xiao‐Yu Jiang, Lang Lin, Zhigang Zhang, Yilan Chen, Cui-Cui Ding, Rengui Weng, Yijing Wang, Mingdi Xu, Jingjing Yu","doi":"10.3390/coatings15121460","DOIUrl":"https://doi.org/10.3390/coatings15121460","url":null,"abstract":"Aspartic acid (ASP) and its derivatives are eco-friendly and cost-effective scale inhibitors but exhibit limited corrosion inhibition in acidic media. To enhance their performance against acid corrosion, a facile, purification-free one-pot aqueous reaction was developed to synthesize an L-ASPME/GA hybrid inhibitor from L-aspartic acid β-methyl ester (L-ASPME) and glutaraldehyde (GA). The resulting inhibitor solution was directly introduced into a 0.5 M H2SO4 pickling solution to achieve synergistic corrosion inhibition for Q235B steel. The corrosion inhibition performance was systematically evaluated using weight loss tests, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and contact angle measurements, with temperature effects also assessed. The results demonstrate that the L-ASPME/GA hybrid, particularly at molar ratios of 2:3–4:1, achieves 90.7%–96.1% inhibition efficiency, significantly outperforming L-ASPME or GA alone. Notably, the 2:3 L-ASPME/GA hybrid shows superior high-temperature acid corrosion resistance versus single components. This synergistic effect is attributed to a co-adsorption mechanism, forming a compactly oriented, thermally robust film driven by hydrogen-bonding networks, Fe2+ coordination, and electrostatic attraction. These findings offer a practical strategy to improve the acid corrosion resistance of ASP–like inhibitors.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1460-1460"},"PeriodicalIF":0.0,"publicationDate":"2025-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1460/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147334048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Langmuir and Langmuir–Blodgett Monolayers from 20 nm Sized Crystals of the Metal–Organic Framework MIL-101(Cr) 金属-有机骨架MIL-101(Cr) 20nm晶体的Langmuir和Langmuir - blodgett单分子膜

3区材料科学

Coatings Pub Date : 2025-12-08 DOI: 10.3390/coatings15121449

Asen Dimov, George R. Ivanov, Leonard Keil, Andreas Terfort, Jinxuan Liu, Velichka Strijkova

{"title":"Langmuir and Langmuir–Blodgett Monolayers from 20 nm Sized Crystals of the Metal–Organic Framework MIL-101(Cr)","authors":"Asen Dimov, George R. Ivanov, Leonard Keil, Andreas Terfort, Jinxuan Liu, Velichka Strijkova","doi":"10.3390/coatings15121449","DOIUrl":"https://doi.org/10.3390/coatings15121449","url":null,"abstract":"Metal–Organic Frameworks (MOFs) have diverse applications due to their tunable porosity, large surface area, and diverse chemical functionalities. Among them, one of the most researched MOFs is MIL-101(Cr), which, in addition, is very stable in water. We have used a commercially available substance with approximately 300 nm large crystals for the preparation of a sensing nano-thin layer for the emerging water contaminant PFOS, due to its high selectivity towards this compound. Here, we have synthesized 20 nm sized crystals of MIL-101(Cr), which are among the smallest reported, and compared them to the same material with 300 nm sized crystals. The material was characterized by TEM and XPS. It was possible to prepare insoluble monolayers at the air–water interface (Langmuir films), which were characterized with film compression isotherms, Brewster angle microscopy, and surface potential measurements. The Langmuir–Blodgett (LB) method was used to deposit monolayers on Si wafers and 434 MHz Surface Acoustic Wave resonator simultaneously. The LB layers were very stable over time. The smaller-sized MIL-101 (Cr) crystals exhibit denser, more homogeneous water coverage and packing upon compression, with no observable 10–100 µm aggregates. LB monolayers from the 20 nm particles have approximately six times lower surface roughness. The LB monolayer is far from being smooth, but this will allow excellent access to the MOF pores by the tested analyte in a chemical sensing application. The lack of research on depositing presynthesized MOFs using probably the best method for nanoarchitectonics—the LB method—is addressed. The 20 nm sized MOF crystals are the smallest deposited by this method so far.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1449-1449"},"PeriodicalIF":0.0,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1449/pdf?version=1765205900","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147898372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Light-Induced Interfacial Charge Transport of In2O3/Reduced Graphene Oxide/Non-Conjugated Polymers in a Wide Range of the Light Spectrum In2O3/还原氧化石墨烯/非共轭聚合物在宽光谱范围内的光诱导界面电荷输运

3区材料科学

Coatings Pub Date : 2025-12-08 DOI: 10.3390/coatings15121448

Xingfa Ma, Xintao Zhang, Mingjun Gao, Ruifen Hu, You Wang, Guang Li

{"title":"Light-Induced Interfacial Charge Transport of In2O3/Reduced Graphene Oxide/Non-Conjugated Polymers in a Wide Range of the Light Spectrum","authors":"Xingfa Ma, Xintao Zhang, Mingjun Gao, Ruifen Hu, You Wang, Guang Li","doi":"10.3390/coatings15121448","DOIUrl":"https://doi.org/10.3390/coatings15121448","url":null,"abstract":"To increase the use of the near-infrared (NIR) light from In2O3, a nanocomposite of In2O3/reduced graphene oxide was synthesised. To improve adhesion to the substrates, a small amount of PVA (polyvinyl alcohol) was added to the nanocomposite. Results showed that adding an appropriate amount of PVA to the nanocomposite remarkably enhanced the ability to extract photogenerated carriers due to interface optimisation based on the grain boundary filling with PVA and charge tunnelling effects. The nanocomposites exhibited photoconductive switching responses from the visible light region to the near-infrared range. Meanwhile, the organic/inorganic hybrid coating on silk fibres exhibited mutual conversion of positive and negative photoconductivity, as well as electrical switching responses to applied strain. Furthermore, it was found that a photoelectric signal could still be determined with zero bias after the In2O3/reduced graphene oxide nanocomposite had been stored for over four years. This reflects that the nanocomposites have an internal electric field that promotes the transfer of photogenerated carriers and prevents the recombination of photogenerated electrons and holes. Similar results were also obtained by adding an appropriate amount of other non-conjugated polymers, such as dendrimers. Physical mechanisms are discussed. This study provides reference values for the development of multifunctional organic/inorganic hybrids integrating non-conjugated polymer components to enhance specific properties.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1448-1448"},"PeriodicalIF":0.0,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1448/pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147332515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electron-Transfer-Induce Optical Modulation and Growth Mechanism of Au–ZnO Heterogeneous Nanopyramids Au-ZnO非均相纳米锥体的电子转移诱导光调制及生长机制

3区材料科学

Coatings Pub Date : 2025-12-07 DOI: 10.3390/coatings15121439

Yumeng Zhang, Chao Gu, Hong Li, Dechuan Li

{"title":"Electron-Transfer-Induce Optical Modulation and Growth Mechanism of Au–ZnO Heterogeneous Nanopyramids","authors":"Yumeng Zhang, Chao Gu, Hong Li, Dechuan Li","doi":"10.3390/coatings15121439","DOIUrl":"https://doi.org/10.3390/coatings15121439","url":null,"abstract":"Au–ZnO heterogeneous nanoparticles (NPs) were successfully synthesized, and the intrinsic correlation between their spectral evolution and interfacial growth mechanism was systematically elucidated. With increasing Au content, the SPR absorption peak of Au exhibits a pronounced red shift, while the defect-related emission of ZnO is suppressed and the band-edge emission becomes broadened. These spectral variations are closely coupled with the interfacial growth process. Interfacial electron transfer and the formation of a Schottky barrier induce charge redistribution within ZnO and reduce oxygen vacancies, enabling ZnO to preferentially nucleate on the Au surface and subsequently evolve into a pyramidal structure. The resulting morphological transformation further enhances electron depletion and plasmonic coupling, lowering the effective plasmonic energy of Au and deepening the SPR red shift. Quantitative analysis based on Mie theory shows that approximately 12% of the free electrons in Au participate in interfacial transfer, confirming the cooperative role of strong electronic coupling in governing both growth dynamics and optical responses. This study provides deeper insight into the photophysical mechanisms of Au–ZnO heteronanocrystals and offers guidance for designing noble metal–semiconductor composites with tunable optoelectronic properties.","PeriodicalId":10520,"journal":{"name":"Coatings","volume":"15 12","pages":"1439-1439"},"PeriodicalIF":0.0,"publicationDate":"2025-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2079-6412/15/12/1439/pdf?version=1765101853","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147902889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3