ACS Applied Materials & Interfaces最新文献_第10页

Protection of Framework Nucleic Acid Complexes via Regulating Ferroptosis on Myocardial Ischemia-Reperfusion Injury 框架核酸复合物通过调控铁下沉对心肌缺血再灌注损伤的保护作用

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c06755

Hang Liao, Xin Zhang, Weitong Lu, Yue Sun, Sirong Shi, Yunfeng Lin

{"title":"Protection of Framework Nucleic Acid Complexes via Regulating Ferroptosis on Myocardial Ischemia-Reperfusion Injury","authors":"Hang Liao, Xin Zhang, Weitong Lu, Yue Sun, Sirong Shi, Yunfeng Lin","doi":"10.1021/acsami.5c06755","DOIUrl":"https://doi.org/10.1021/acsami.5c06755","url":null,"abstract":"The pathogenesis of myocardial ischemia-reperfusion injury (MIRI) is a complex process involving multiple pathophysiological mechanisms, including mitochondrial dysfunction, oxidative stress, and ferroptosis. Therefore, MIRI continues to pose a significant obstacle in cardiovascular therapy. Curcumin (Cur), a natural polyphenolic compound with potent antioxidant and antiferroptosis properties, has therapeutic potential but is poorly soluble, unstable, and has low bioavailability. To address these issues, a tetrahedral framework nucleic acid (tFNA) piggybacked Cur (tFNA-Cur) drug delivery system was designed to achieve efficient drug delivery and synergistically amplify the therapeutic effect by utilizing the programmable nanostructures, excellent safety profile, high biocompatibility, and intrinsic antioxidant activity of tFNA. In vitro studies demonstrated that tFNA-Cur could effectively mitigate oxidative stress-induced injury in H9C2 cardiomyocytes by restoring the redox balance and inhibiting ferroptosis. In a rat MIRI model, tFNA-Cur demonstrated significant efficacy, including reduced infarct size, decreased Fe2+ accumulation, and inhibited MDA production, a marker of lipid peroxidation. At the molecular level, tFNA-Cur enhanced the production of antioxidant proteins (GPX4, HO-1) by modulating the KEAP1-Nrf2 signaling axis, while inhibiting the overproduction of mitochondrial reactive oxygen species (ROS). This achieved a synergistic multitargeted and effective suppression of cardiomyocyte ferroptosis during the MIRI process. This study emphasizes the value of tFNA-Cur as a promising nanotherapeutic strategy in treating MIRI. It provides new ideas and research directions for combining nucleic acid nanomaterials with natural compounds to treat MIRI.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"58 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Role of Patterned Wettability of Anode Porous Transport Layer in Enhancing Two-Phase Transport for Proton Exchange Membrane Electrolyzers 阳极多孔传输层的模式润湿性在质子交换膜电解槽两相传输中的作用

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c07788

Yang Xu, Dingding Ye, Chen Yang, Jun Li, Yang Yang, Liang Zhang, Jian Huang, Xun Zhu, Qiang Liao

{"title":"Role of Patterned Wettability of Anode Porous Transport Layer in Enhancing Two-Phase Transport for Proton Exchange Membrane Electrolyzers","authors":"Yang Xu, Dingding Ye, Chen Yang, Jun Li, Yang Yang, Liang Zhang, Jian Huang, Xun Zhu, Qiang Liao","doi":"10.1021/acsami.5c07788","DOIUrl":"https://doi.org/10.1021/acsami.5c07788","url":null,"abstract":"Green hydrogen production through proton exchange membrane (PEM) electrolyzers, powered by renewable energy sources and capable of operating at high current densities, has attracted considerable attention. However, two-phase transport within the anode porous transport layer (PTL) and catalyst layer (CL) significantly impacts the performance of PEM electrolyzers. In this work, the role of patterned wettability of the PTL is investigated in optimizing the gas distribution in the PTL, PTL/CL interface, and CL for PEM electrolyzers by a three-dimensional, two-phase, dual-scale pore network model. The dual-scale pore network modeling (PNM) approach analyzes the gas invasion process in the PTL, with a view to examining the impact of wettability on two-phase transport. Initially, gas invades larger pores at the PTL/CL interface, resulting in a rapid increase in the gas-phase saturation. As the invasion process continues, the rate of increase in the gas-phase saturation declines. By adjusting the width and ratio of hydrophobic regions in the PTL, gas-phase saturation can be effectively reduced. Notably, implementing patterned wettability with a hydrophilic/hydrophobic ratio of 3:1 and a width of 25 μm enhances water transport, reducing gas-phase saturation to 18%, which is over 14% lower than that observed for the PTL with original wettability.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"106 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Metal–Organic Decomposition for Additive Manufacturing of Extreme Environment Electronics 金属有机分解在极端环境电子增材制造中的应用

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c03450

Jun Zhang, Saurabh Khuje, Xiao Sun, Zhongxuan Wang, Samuel von Keitz, Jian Yu, Shenqiang Ren

{"title":"Metal–Organic Decomposition for Additive Manufacturing of Extreme Environment Electronics","authors":"Jun Zhang, Saurabh Khuje, Xiao Sun, Zhongxuan Wang, Samuel von Keitz, Jian Yu, Shenqiang Ren","doi":"10.1021/acsami.5c03450","DOIUrl":"https://doi.org/10.1021/acsami.5c03450","url":null,"abstract":"The lack of intrinsic resistance to oxidation and corrosion, particularly in high-temperature environments, significantly limits the performance and longevity of materials used in extreme conditions like aerospace and energy applications. A key challenge is developing single-step additive manufacturing capable of producing metals and ceramics with built-in resistance to these degradative processes. Herein, we report a metal–organic decomposition strategy to additively manufacture hybrid electronic materials that remain stable at 1100 °C for over 37 h and more than 80 h in strong acid and base solutions, demonstrating oxidation and corrosion resistance. The gold materials, derived from partial in-solution reduction and thermal decomposition of the precursor, exhibit a high conductivity of 10.8 MS/m at 1000 °C, while the molecular decomposed alumina shows a phase transformation from the γ-phase to the stable α-phase below 1000 °C. Synchrotron-based in situ wide-angle X-ray scattering (WAXS) was employed to analyze its crystal structure and high-temperature stability mechanistically. These findings suggest that the combination of molecular decomposed gold and alumina in a top-down structure (metal–ceramic) from molecular decomposition possesses great potential for extreme environment electronics with thermal stability and reliability, allowing wireless temperature detection in harsh environments from room temperature to 1000 °C.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"24 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145473","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Cascade Catalytic Nanozymes Induce Tumor Ca2+ Overload and Ferroptosis by Reducing Energy Supply and Amplifying Oxidative Stress 级联催化纳米酶通过减少能量供应和放大氧化应激诱导肿瘤Ca2+过载和铁下垂

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c04041

Benyan Zheng, Hongjie Zhang, Gaoyuan Yu, Rui Geng, Yanxiang Sang, Guimin Huang, Xuechun Wang, Jing Wang, Yuan Hu, Xiaopeng Ma

{"title":"Cascade Catalytic Nanozymes Induce Tumor Ca2+ Overload and Ferroptosis by Reducing Energy Supply and Amplifying Oxidative Stress","authors":"Benyan Zheng, Hongjie Zhang, Gaoyuan Yu, Rui Geng, Yanxiang Sang, Guimin Huang, Xuechun Wang, Jing Wang, Yuan Hu, Xiaopeng Ma","doi":"10.1021/acsami.5c04041","DOIUrl":"https://doi.org/10.1021/acsami.5c04041","url":null,"abstract":"Nanozyme-mediated nanocatalytic therapy, by mimicking the activity of redox enzymes, generates highly toxic reactive oxygen species (ROS) within tumor cells, thereby opening a pathway for tumor-specific therapy. However, achieving satisfactory therapeutic outcomes with nanozymes remains challenging due to the inherent complexity of the tumor microenvironment (TME). In this context, we designed a two-dimensional layered double hydroxide (LDH) nanozyme loaded with Au nanoparticles, while incorporating bioactive Ca2+ and Fe3+ ions (denoted as MgCaFe-LDH@Au NSs) to target the specific needs of the TME. The designed nanozyme mimics glucose oxidase to facilitate self-sufficient H2O2 production and simulates catalase and glutathione peroxidase to overcome the adverse conditions of hypoxia and elevated GSH levels in the TME. Subsequently, the nanozyme emulates peroxidase activity to generate ROS, amplifying oxidative stress and causing redox imbalance, ultimately inducing ferroptosis in tumor cells. Moreover, MgCaFe-LDH@Au NSs also function as an inorganic semiconductor sonosensitizer with a tunable band structure, enabling the generation of abundant ROS under ultrasound irradiation to achieve synergistic sonodynamic and catalytic therapy. Notably, the high levels of ROS induced by the nanozyme, along with the interference in tumor ATP synthesis, enhanced the calcium overload in the TME caused by the release of Ca2+ from the nanozyme. In summary, this two-dimensional nanomaterial, through nanozyme and ultrasound-catalyzed synergistic disruption of tumor energy supply and redox balance, exhibited significant therapeutic efficacy in a 4T1 tumor-bearing mouse model. This study also highlights the immense potential of multimetal LDHs as inducers of calcium overload and ferroptosis in tumor therapy.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"153 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Phase Transition Control of pNIPAAm-b-pMMA Thin Films via UV/Ozone Irradiation and Direct Immersion Annealing for Biomedical Applications 生物医学用紫外/臭氧辐照和直接浸没退火控制pNIPAAm-b-pMMA薄膜的相变

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c06761

Moein Fadavi, Farhang Abbasi, Morteza Nasiri, Elham Sabzi Dizajyekan, Fahimeh Kazeminava

{"title":"Phase Transition Control of pNIPAAm-b-pMMA Thin Films via UV/Ozone Irradiation and Direct Immersion Annealing for Biomedical Applications","authors":"Moein Fadavi, Farhang Abbasi, Morteza Nasiri, Elham Sabzi Dizajyekan, Fahimeh Kazeminava","doi":"10.1021/acsami.5c06761","DOIUrl":"https://doi.org/10.1021/acsami.5c06761","url":null,"abstract":"Poly(N-isopropylacrylamide) (pNIPAAm) and its copolymers with poly(methyl methacrylate) (pMMA), due to their lower critical solution temperature (LCST) within the physiological temperature range, have attracted attention in many studies as responsive surfaces for cell sheet growth. The behavior of pNIPAAm and its block copolymer with pMMA (pNIPAAm-b-pMMA) films is not fully understood. In this study, the effects of ultraviolet/ozone (UV/O3), interdiffusion, and direct immersion annealing (DIA) treatments on the responsiveness and adhesion of spin-coated thin films of pNIPAAm and pNIPAAm-b-pMMA were investigated. The water contact angle (WCA) measurements were used to record changes in hydrophilicity and relaxation time for the films immersed in deionized water, as well as hydrophilicity changes during cyclic measurements. Atomic force microscopy was utilized to track phase transitions in the films over three complete and continuous thermal cycles. The phase transition behavior of the films across the LCST range remains insufficiently understood, particularly in relation to the influence of different treatment types and the underlying chemophysical mechanisms that regulate the orientation of functional groups along the polymer chains. In this study, we address these gaps by examining how these factors, along with the globule-to-coil transition of pNIPAAm chains, impact the films’ thermoresponsiveness and the time required for complete cell sheet detachment. This study evaluated the potential of utilizing straightforward and environmentally sustainable methods for producing cell culture dishes as alternatives to conventional, costly, and environmentally detrimental techniques. The findings confirmed the significant promise of these methods for the intended applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"18 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Three-Dimensional Continuous Ion Transport Skeleton-Reinforced Composite Solid Electrolyte for High-Performance Solid-State Lithium Metal Batteries 用于高性能固态锂金属电池的三维连续离子传输骨架增强复合固体电解质

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c01454

Jian Liu, Liu Pei, Jianling Li

{"title":"Three-Dimensional Continuous Ion Transport Skeleton-Reinforced Composite Solid Electrolyte for High-Performance Solid-State Lithium Metal Batteries","authors":"Jian Liu, Liu Pei, Jianling Li","doi":"10.1021/acsami.5c01454","DOIUrl":"https://doi.org/10.1021/acsami.5c01454","url":null,"abstract":"The Li1.3Al0.3Ti1.7(PO4)3 (LATP) electrolyte is recognized as a highly promising solid-state electrolyte for next-generation solid-state lithium batteries due to its high ionic conductivity, low cost, and exceptional air stability. Unfortunately, its practical application is impeded by significant grain boundary impedance and interfacial instability with lithium metal. In this study, we introduced a cost-effective template method to fabricate a three-dimensional LATP (3D-LATP) skeleton featuring continuous porosity, which was combined with the polymer poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) to fabricate a three-dimensional composite solid electrolyte (3D-CSE) exhibiting enhanced flexibility and superior interfacial contact. The 3D-LATP skeleton acts as an active filler, establishing continuous transport pathways for lithium ions within the electrolyte and substantially increasing the room-temperature ionic conductivity to 6.89 × 10–4 S cm–1. Furthermore, the nonflammability of the 3D-LATP skeleton significantly enhances the thermal stability of the electrolyte. Additionally, the inclusion of the PVDF-HFP polymer improves interfacial contact between the LATP skeleton and the electrodes, thereby mitigating erosion of the LATP skeleton by the lithium metal anode in Li|Li symmetric batteries and LiFePO4|Li full batteries. Consequently, the Li|3D-CSE|Li symmetric battery demonstrated stable lithium plating–stripping cycles for over 4000 h at 0.1 mA cm–2. Moreover, the LiFePO4|3D-CSE|Li full battery exhibited reliable cycling performance over 500 cycles at 0.5C. This high-performance 3D composite electrolyte highlights the potential of LATP for high-energy-density solid-state lithium metal batteries.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"83 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Boosted Water-Induced Electricity Generation via a Multistrategy Approach for a Self-Driven System 自驱动系统的多策略方法促进水致发电

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c03117

Haibo Hu, Xuan Li, Shuyang Wu, Zhengyang Zhang, Han Dai, Haitao Li, Xing Yi Ling, Jie Han

{"title":"Boosted Water-Induced Electricity Generation via a Multistrategy Approach for a Self-Driven System","authors":"Haibo Hu, Xuan Li, Shuyang Wu, Zhengyang Zhang, Han Dai, Haitao Li, Xing Yi Ling, Jie Han","doi":"10.1021/acsami.5c03117","DOIUrl":"https://doi.org/10.1021/acsami.5c03117","url":null,"abstract":"Carbon-based water-induced generators (WIGs) with unique advantages offer a promising method for autonomous power generation. However, the traditional configuration still suffers from low output power. Herein, we introduce a promising WIG with high power output achieved via a multistrategy approach for a self-driving intelligent water positioning platform. By rationally using electrokinetic regulation and synergism of galvanic effects, the optimal WIG enables the output of an open-circuit voltage of ∼823 mV and a short-circuit current of ∼109 μA, with a power density of 3.9 μW/cm2, ∼62.4 times higher than previous reports under DI water. Additionally, such design demonstrates superior stability and versatility in multiple aqueous solutions and allows for the enhancement of output energy via series or parallel connections for low-power devices. As a proof of concept, a valuable self-powered positioning system has been successfully fabricated via our outstanding WIG integrated with lifesaving and mini positioning devices for immediate water rescue. Our proposed design has opened up an avenue for the iterative development of high-efficiency WIGs, promoting them toward valuable applications.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"7 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Eccentric Corrosion-Induced Formation of γ-NiFeOOH and γ-NiCoOOH on NiFeCo Alloy for Enhanced OER NiFeCo合金偏心腐蚀诱导γ-NiFeOOH和γ-NiCoOOH的形成以增强OER

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c03007

Sneha Mittal, Balakumaran Kamaraj, Sandeep Yadav, Pracheta Trivedi, Neha Clare Minj, Anantharaj Sengeni

{"title":"Eccentric Corrosion-Induced Formation of γ-NiFeOOH and γ-NiCoOOH on NiFeCo Alloy for Enhanced OER","authors":"Sneha Mittal, Balakumaran Kamaraj, Sandeep Yadav, Pracheta Trivedi, Neha Clare Minj, Anantharaj Sengeni","doi":"10.1021/acsami.5c03007","DOIUrl":"https://doi.org/10.1021/acsami.5c03007","url":null,"abstract":"An indirect, swift, and easy method of enhancing the oxygen evolution reaction (OER) performance of an economically viable Fe-rich NiFeCo (NFC) alloy has been developed. This approach leverages the anodic potential sweeps applied indirectly to the counter electrode (CE) when one does cathodic hydrogen evolution reaction (HER) on by potential sweeping at the working electrode (WE). In this method, NFC was intentionally corroded indirectly by using it as a CE for the potential sweeping HER experiment done with a Pt WE. The indirectly corroded NFC (NFC_IC) featuring mostly γ-NiFeOOH and γ-NiCoOOH entities on the surface was able to begin the OER at an onset overpotential of 250 mV and reach the benchmark of 10 mA cm–2 at 290 mV, which is 60 and 55 mV lesser than that of the bare NFC and RuO2, respectively, all with exceptionally faster kinetics, as evidenced by a relatively smaller Tafel slope of 30 mV dec–1. These insights into designing a trimetallic alloy-based OER electrocatalyst have opened a previously unknown avenue in the development of advanced self-supported OER electrodes for better and efficient H2 production via water electrolysis.","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"240 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144153841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Gradient-Heterogeneous Lithium/Lithium–Magnesium Alloy for a Highly Stable Lithium Metal Anode 用于高稳定锂金属阳极的梯度非均相锂/锂镁合金

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c04611

Yi Shuai, Yilong Hu, Lan Geng, Jin Lou, Jingan Zhou, Limin Zhang, Ming Li, Changqing Su, Jiming Lu, Yingpeng Wu

引用次数: 0

Improving the Activity of Platinum Nanoparticles in Electrocatalytic Oxidation of Formic Acid via the Surface Grafting of Thiol or Thiophenol Molecules 通过表面接枝硫醇或噻吩分子提高铂纳米颗粒电催化氧化甲酸的活性

IF 9.5 2区材料科学

ACS Applied Materials & Interfaces Pub Date : 2025-05-27 DOI: 10.1021/acsami.5c02916

Yaxin Song, Chengcheng Zhu, Zhongyan Gong, Xing Kang, Qinghua Liu, Yaning Liu, Miao Ji, Hiroshi Uji-i, Wei Huang, Gang Lu

{"title":"Improving the Activity of Platinum Nanoparticles in Electrocatalytic Oxidation of Formic Acid via the Surface Grafting of Thiol or Thiophenol Molecules","authors":"Yaxin Song, Chengcheng Zhu, Zhongyan Gong, Xing Kang, Qinghua Liu, Yaning Liu, Miao Ji, Hiroshi Uji-i, Wei Huang, Gang Lu","doi":"10.1021/acsami.5c02916","DOIUrl":"https://doi.org/10.1021/acsami.5c02916","url":null,"abstract":"Electrocatalytic oxidation of organic molecules, in particular the formic acid oxidation reaction (FAOR), is crucial for applications such as direct liquid fuel cells. As one of the effective catalysts, platinum (Pt) has been widely used as the electrocatalyst for these reactions in the laboratory; however, its utilization in practical FAOR is still limited due to insufficient activity. This study introduces a simple and rapid molecular modification method to improve the FAOR performance of Pt by chemically adsorbing thiol or thiophenol molecules. At an optimal surface coverage of 7.1%, the current density of FAOR on cysteamine-grafted Pt reached up to 24.76 mA cm–2, a 7.2-fold increase compared to that on pristine Pt. This increase is mainly attributed to the change in the electronic structure of the Pt surface and the charge transfer at the interface, which are induced by the cysteamine molecules. X-ray photoelectron spectroscopy and in situ Raman spectroscopy demonstrated that the adsorption of cysteamine molecules on the Pt surface improves the charge transfer on the Pt surface and the production of formic acid via the formate pathway. The mechanism of enhanced catalysis on Pt-Cysteamine is revealed by density functional theory calculations. Interestingly, various thiols and thiophenols were also proved to be effective in promoting the FAOR reaction, and this strategy could also be applied to improve the performance of many other reactions (such as, methanol oxidation reaction).","PeriodicalId":5,"journal":{"name":"ACS Applied Materials & Interfaces","volume":"133 1","pages":""},"PeriodicalIF":9.5,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144145471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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