Electrocatalysis最新文献_第6页

Bimetallic Cobalt-Vanadium Boride as a Bifunctional Electrocatalyst for Overall Water Splitting 双金属钴钒硼化物作为全水分解的双功能电催化剂

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-26 DOI: 10.1007/s12678-025-00946-6

Maheshwar B. Falake, Rinkoo Bhabal, Avani Chunduri, Vinita Dhulia, Rupali Patel, Nainesh Patel

The transition to a hydrogen-based economy necessitates the development of sustainable and cost-effective electrocatalysts for green hydrogen production via water electrolysis. In this study, we report a novel cobalt-vanadium boride (CoVB) catalyst, which exhibits enhanced bifunctional activity for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline media. CoVB was synthesized using a facile one-step chemical reduction method with varying vanadium concentrations, optimizing performance at a 3% vanadium content. Electrochemical analyses demonstrated that CoVB significantly outperformed cobalt boride (CoB), achieving an HER and OER overpotential (η₁₀) of 80 mV and 320 mV, respectively, comparable to noble metal benchmarks. Characterization results revealed that V plays a promoting role in inhibiting the growth of particles and agglomeration of particles, leading to an increase in surface area and producing unique mixed amorphous and crystalline structures in CoVB to enhance catalytic activity by increasing the number of active sites and conductivity across the interface. Furthermore, in two-electrode systems, the cell voltage of 1.66 V was needed to achieve 10 mA/cm² of current density with superior stability and reusability. Overall, the CoVB catalyst, a new candidate from the metal boride family, presents a promising alternative to precious metals for efficient and sustainable water-splitting in alkaline electrolyzers.

Graphical Abstract

向氢基经济的过渡需要开发可持续和具有成本效益的电催化剂，通过水电解实现绿色制氢。在这项研究中，我们报道了一种新型的钴-钒硼化物（CoVB）催化剂，它在碱性介质中表现出增强的析氢反应（HER）和析氧反应（OER）双功能活性。采用简单的一步化学还原法合成了不同钒浓度的CoVB，在钒含量为3%时性能最佳。电化学分析表明，CoVB明显优于硼化钴（CoB），其HER和OER过电位（η10）分别为80 mV和320 mV，与贵金属基准相当。表征结果表明，V对抑制颗粒的生长和颗粒团聚起促进作用，导致CoVB的表面积增加，产生独特的非晶和晶体混合结构，通过增加活性位点数量和界面电导率来增强催化活性。此外，在双电极系统中，需要1.66 V的电池电压才能达到10 mA/cm2的电流密度，并且具有优异的稳定性和可重用性。综上所述，CoVB催化剂作为金属硼化物家族的新候选物，为在碱性电解槽中高效、可持续地分解水提供了一种有前途的贵金属替代品。图形抽象

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引用次数: 0

Carbon Nanotube-Supported Co–Ni-Pt Ternary Alloy Ultrafine Nanoparticles with Enhanced Performance for Methanol Oxidation 碳纳米管负载的Co-Ni-Pt三元合金超细纳米颗粒甲醇氧化性能增强

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-26 DOI: 10.1007/s12678-025-00947-5

Ruiwen Yan, Shuiyan Ning, Yizhong Wang, Guiqi Gao, Chuanqiang Wu

The study focuses on improving methanol electrocatalytic oxidation (MOR) by optimizing platinum-based alloy electrocatalysts. Co–Ni-Pt ternary alloy nanoparticles were successfully deposited on carbon nanotubes via a chemical reduction method, forming a composite of Co–Ni-Pt nanoparticles/carbon nanotubes (Co–Ni-Pt NPs/CNTs). Various characterization techniques, including X-ray diffraction (XRD), transmission electron microscopy (TEM), special aberration corrected transmission electron microscopy (STEM), and X-ray photoelectron spectroscopy (XPS), were employed to analyze the morphology and structure of the material. The results illustrated a uniform distribution of Co–Ni-Pt alloy nanoparticles on the carbon nanotube surface. The catalytic performance of the Co–Ni-Pt NPs/CNTs composite materials was assessed using chronoamperometry (CA), linear sweep voltammetry (LSV), and cyclic voltammetry (CV). By adjusting the ratios of Co, Ni, and Pt, catalytic performance in MOR was improved. Among the Co–Ni-Pt NPs/CNTs composites tested, the Co_1.5Ni_1.5Pt₁ NPs /CNTs composite exhibited the highest catalytic activity, achieving a mass activity of 2537 mA mg⁻¹_Pt, outperforming that of commercial Pt/C catalysts by 1.37 times.

Graphical Abstract

研究重点是通过优化铂基合金电催化剂来提高甲醇电催化氧化（MOR）性能。通过化学还原法制备了Co-Ni-Pt三元合金纳米颗粒在碳纳米管上，形成了Co-Ni-Pt纳米颗粒/碳纳米管复合材料（Co-Ni-Pt NPs/CNTs）。利用x射线衍射（XRD）、透射电子显微镜（TEM）、特殊像差校正透射电子显微镜（STEM）和x射线光电子能谱（XPS）等表征技术对材料的形貌和结构进行了分析。结果表明，Co-Ni-Pt合金纳米颗粒在碳纳米管表面分布均匀。采用计时安培法（CA）、线性扫描伏安法（LSV）和循环伏安法（CV）对Co-Ni-Pt NPs/CNTs复合材料的催化性能进行了评价。通过调整Co、Ni和Pt的比例，提高了MOR的催化性能。在所测试的Co-Ni-Pt NPs/CNTs复合材料中，Co1.5Ni1.5Pt1 NPs/CNTs复合材料的催化活性最高，达到了2537 mA mg - 1Pt的质量活性，是商用Pt/C催化剂的1.37倍。图形抽象

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引用次数: 0

Hyamine 1622-I/I2-Incorporated Sensing Platform for Selective Measurement of Ascorbic Acid, Dopamine, Acetaminophen, Ibuprofen, and Tyrosine Hyamine 1622-I/I2-Incorporated传感平台选择性测量抗坏血酸，多巴胺，对乙酰氨基酚，布洛芬和酪氨酸

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-25 DOI: 10.1007/s12678-025-00949-3

S. Bahmanzadeh, M. Noroozifar

In this study, we present a simple and sensitive carbon paste electrode embedded with Hyamine 1622-iodide/iodine for the simultaneous detection of ascorbic acid (AA), dopamine (DA), acetaminophen (AC), ibuprofen (IBP), and tyrosine (Tyr). Various electrochemical techniques, including cyclic and sweep voltammetry, chronoamperometry, and electrochemical impedance spectroscopy, were employed to investigate the electrode’s performance. The optimized electrode demonstrated excellent sensitivity, with detection limits of 0.74, 0.46, 0.45, 0.52, and 0.44 µM for AA, DA, AC, IBP, and Tyr, respectively. Additionally, it exhibited a broad linear range: 2.4–960.0 µM, 1.5–800.0 µM, 1.5–800.0 µM, 1.7–960.0 µM, and 1.5–860.0 µM for the respective analytes. Further electrochemical analysis provided key parameters, including diffusion coefficients, apparent electrode surface area, heterogeneous rate constants, electrode surface coverage, electron transfer coefficients, and catalytic rate constants for the oxidation processes of the target analytes. The proposed electrode successfully detected AA, DA, AC, IBP, and Tyr in human biological samples, demonstrating good precision with relative standard deviations (RSD) of 2.1%–3.9% and recovery rates between 97 and 103%. The accuracy of the method was validated against a standard technique, confirming its reliability and robustness.

Graphical Abstract

在这项研究中，我们提出了一种简单而敏感的碳糊电极，用于同时检测抗坏血酸（AA）、多巴胺（DA）、对乙酰氨基酚（AC）、布洛芬（IBP）和酪氨酸（Tyr）。各种电化学技术，包括循环伏安法和扫描伏安法、计时伏安法和电化学阻抗谱，被用来研究电极的性能。优化后的电极对AA、DA、AC、IBP和Tyr的检出限分别为0.74、0.46、0.45、0.52和0.44µM。此外，它还具有较宽的线性范围：2.4-960.0µM, 1.5-800.0µM, 1.5-800.0µM, 1.7-960.0µM和1.5-860.0µM。进一步的电化学分析提供了目标分析物氧化过程的关键参数，包括扩散系数、表观电极表面积、非均相速率常数、电极表面覆盖率、电子转移系数和催化速率常数。该电极成功检测了人体生物样品中的AA、DA、AC、IBP和Tyr，具有良好的精密度，相对标准偏差（RSD）为2.1% ~ 3.9%，回收率为97% ~ 103%。用标准方法验证了方法的准确性，验证了方法的可靠性和鲁棒性。图形抽象

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引用次数: 0

Impact of Multiwall Carbon Nanotubes on Photocatalytic Response of Cadmium Oxide Nanocomposites for Water Pollutants 多壁碳纳米管对氧化镉纳米复合材料对水污染物光催化反应的影响

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-15 DOI: 10.1007/s12678-025-00942-w

Suchitra Manjhu, Anu Malhotra, Sonia Srivastava, Anju Lavania, Karishma Jain, Deepika Maan, S. K. Jain, Shalini Dixit, Balram Tripathi

In this study, we are reporting photocatalytic response of multiwall carbon nanotubes (MWCNTs)/cadmium oxide (CdO) nanocomposites. We dispersed MWCNT (1–5 wt%) into CdO system via sonication to obtain MWCNT/CdO nanocomposites. The methylene blue (MB) dye has been used as a photocatalytic probe to study response of degradation with respect to contact reaction time, effect of pH, temperature, and concentration of MWCNT into the CdO system. The optimum values are acquired at pH value of 6 and temperature range 50–60 °C for all composition of the catalysts. The intrinsic characteristics of resulting composites have been studied by X-ray diffraction, scanning electron microscopy, FT-IR analysis, and photoluminescence spectroscopy. It has been found that the as-prepared MWCNT/CdO nanocomposites possess dye absorptivity of 97.85%, significantly higher than the 64.85% observed for pristine CdO at a contact time of 75 min. Additionally, these nanocomposites exhibited an extended light absorption range and improved charge separation efficiency. The photodegradation of methylene blue shows significant enhancement in the reaction rate which reaches up to 0.058 min⁻¹ for the MWCNT/CdO composites, compared to 0.0189 min⁻¹ for the pristine CdO system.

Graphical Abstract

在这项研究中，我们报道了多壁碳纳米管(MWCNTs)/氧化镉（CdO）纳米复合材料的光催化反应。我们通过超声波将MWCNT （1-5 wt%）分散到CdO体系中，得到MWCNT/CdO纳米复合材料。以亚甲基蓝（MB）染料作为光催化探针，研究了接触反应时间、pH、温度和MWCNT加入CdO体系的浓度对降解的影响。在pH值为6、温度范围为50 ~ 60℃时，各组分催化剂的最佳配比均达到最佳。用x射线衍射、扫描电镜、红外光谱和光致发光光谱等方法研究了复合材料的内在特性。结果表明，MWCNT/CdO纳米复合材料在接触75 min时的染料吸收率为97.85%，明显高于原始CdO的64.85%。此外，这些纳米复合材料具有更大的光吸收范围和更高的电荷分离效率。MWCNT/CdO复合材料对亚甲基蓝的光降解反应速度有显著的提高，与原始CdO系统的反应速度0.0189分钟相比较，MWCNT/CdO复合材料的反应速度可达0.058分钟⁻1。图形抽象

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引用次数: 0

Creation of a 2-Nitrophenol Sensor by Using ZrO2-Encapsulated Barium Oxide in the Presence of 4-Nitrophenol 在4-硝基苯酚存在下用zro2包封氧化钡制备2-硝基苯酚传感器

IF 2.8 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-04 DOI: 10.1007/s12678-025-00943-9

Sudhan Narayanan, Pitchaimuthu Sakthivel, Balasubramanian Venkataraman

By employing ZrO₂ coupled barium oxide nanoparticles modified glassy carbon electrode (ZrO₂ coupled BaO/GCE), we create a novel platform to sense the environmental contaminant 2-nitrophenol. Using XRD, FTIR, and SEM, the phase formation of BaO and ZrO₂ coupled BaO nanomaterials was examined. In comparison to bare GCE, both ZrO₂ coupled BaO-modified GCE and pure BaO-modified GCE demonstrate strong electrocatalytic activity towards 2-nitrophenol. The ZrO₂ coupled BaO-modified sensing platform has good sensitivity for 2-nitrophenol measurement across a broad linear range of 0.2 to 60 µM, with a 0.09 µM detection limit at the lowest. Moreover, it exhibits strong selectivity towards significant interfering substances including 4-nitrophenol, 4-aminophenol, catechol, hydroquinone, etc. Good agreement is observed between the analytical application of the suggested sensor and actual real water sample analysis.

Graphical Abstract

采用ZrO2偶联氧化钡纳米粒子修饰的玻碳电极（ZrO2偶联BaO/GCE），建立了一种新型的环境污染物2-硝基苯酚检测平台。采用XRD、FTIR、SEM等手段对BaO和ZrO2偶联BaO纳米材料的相形成进行了研究。与裸GCE相比，ZrO2偶联bao修饰GCE和纯bao修饰GCE对2-硝基苯酚均表现出较强的电催化活性。ZrO2耦合bao修饰的传感平台在0.2 ~ 60µM的宽线性范围内具有良好的2-硝基苯酚测量灵敏度，最低检测限为0.09µM。对4-硝基酚、4-氨基酚、儿茶酚、对苯二酚等重要干扰物质具有较强的选择性。该传感器的分析应用与实际水样分析结果吻合较好。图形抽象

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引用次数: 0

Voltammetric Sensor for Simultaneous Determination of Ponceau 4R, Amaranth, and Tartrazine as Additives in Foodstuffs 伏安传感器同时测定食品中添加剂Ponceau 4R、苋菜红和酒黄石

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-03-03 DOI: 10.1007/s12678-025-00936-8

Hanieh Ghanbari, Mansour Arab Chamjangali, Mohammad Faraji

Simultaneous electrochemical determination of three synthetic additive dyes (ponceau 4R (PON), its isomer amaranth (AMA), and tartrazine (TAR)) was performed with an electrochemical sensor based on a poly-sunset yellow and multi-walled carbon nanotube. In this work, sunset yellow was polymerized with a novel electropolymerization process. Field Emission Scanning Electron Microscopy (FESEM) demonstrates that the surface of the MWCNTs is covered with the sunset yellow polymer layer. The electrochemical activity of the sensor was verified by electrochemical impedance spectroscopy (EIS), cyclic voltammetry (CV), and chronoamperometry. Under the optimized experimental conditions, the electrochemical determination of the PON, AMA, and TAR was carried out using differential-pulse voltammetry (DPV). The results showed low detection limits (LOD) of 0.11, 0.21, and 0.12 µM for PON, AMA, and TAR, respectively, with a linear range of 0.50–30.0 µM. The capability of the developed sensor for routine analysis of the real samples was demonstrated by the determination of PON, the AMA, and TAR in jelly-belly candy, jelly, and tap water.

Graphical Abstract

利用基于聚日落黄和多壁碳纳米管的电化学传感器，对三种合成添加剂染料（芒硝 4R（PON）、其异构体苋菜红（AMA）和酒石酸（TAR））进行了同步电化学测定。在这项工作中，日落黄是通过一种新型电聚合工艺聚合而成的。场发射扫描电子显微镜（FESEM）显示，多壁碳纳米管表面覆盖着日落黄聚合物层。传感器的电化学活性通过电化学阻抗谱（EIS）、循环伏安法（CV）和时变法得到了验证。在优化的实验条件下，使用差分脉冲伏安法（DPV）对 PON、AMA 和 TAR 进行了电化学测定。结果显示，PON、AMA 和 TAR 的检出限（LOD）分别为 0.11、0.21 和 0.12 µM，线性范围为 0.50-30.0 µM。通过测定果冻糖、果冻和自来水中的 PON、AMA 和 TAR，证明了所开发传感器在实际样品中的常规分析能力。

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引用次数: 0

The Design of Cobalt (II)-Porphyrin/Fe2O3-Reduced Graphene Oxide Nanohybrid for Enhanced Electrochemical Sensing of 4-Hydroxybenzoic Acid 用于增强4-羟基苯甲酸电化学传感的钴(II)-卟啉/ fe2o3 -还原氧化石墨烯纳米杂化材料的设计

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-02-28 DOI: 10.1007/s12678-025-00944-8

Teboho Edwin Mpakanyane, Nnamdi Nwahara, Mbulelo Jokazi, Tebello Nyokong

This study presents the synthesis and characterization of a novel electrocatalyst based on cobalt (II)-tetra aminophenyl porphyrin (CoTAPor) conjugated non-covalently with an iron (III) oxide-reduced graphene oxide (Fe₂O₃rGO). The synthesized materials were then used to modify a glassy carbon electrode (GCE), with CoTAPor-Fe₂O₃rGO identified as the superior electrocatalyst. The electrochemical detection of 4-hydroxybenzoic acid (pHBA) was performed on the CoTAPor- Fe₂O₃rGO-modified GCE using cyclic voltammetry (CV) and chronoamperometry (CA). The CoTAPor-Fe₂O₃rGO composite exhibited the best catalytic performance, showing a significantly higher current response compared to bare GCE, CoTAPor, and Fe₂O₃rGO individually under CV and CA. This enhanced performance is attributed to the synergistic interactions between CoTAPor and Fe₂O₃rGO, resulting in increased sensitivity and a lower limit of detection (LoD). For CoTAPor-Fe₂O₃rGO, the sensitivity was 0.761 µA µM⁻¹, with a LoD of 1.18 µM (S/N = 3). In addition, the electrocatalyst demonstrated good selectivity for pHBA in the presence of potentially interfering substances under controlled experimental conditions.

Graphical Abstract

本研究提出了一种基于钴(II)-四氨基苯基卟啉（CoTAPor）与铁（III）还原氧化石墨烯（Fe2O3rGO）非共价共轭的新型电催化剂的合成和表征。然后将合成的材料用于修饰玻碳电极（GCE），并将CoTAPor-Fe2O3rGO确定为优越的电催化剂。采用循环伏安法（CV）和计时电流法（CA）对CoTAPor- fe2o3rgo修饰的GCE进行了4-羟基苯甲酸（pHBA）的电化学检测。CoTAPor-Fe2O3rGO复合材料表现出最好的催化性能，在CV和CA条件下，其电流响应明显高于GCE、CoTAPor和Fe2O3rGO，这种增强的性能归因于CoTAPor和Fe2O3rGO之间的协同作用，从而提高了灵敏度和较低的检测限（LoD）。对于CoTAPor-Fe2O3rGO，灵敏度为0.761µAµM−1，LoD为1.18µM （S/N = 3）。此外，在所控制的实验条件下，电催化剂在潜在干扰物质存在下对pHBA表现出良好的选择性。图形抽象

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引用次数: 0

Analytical Approach for Degradation of Pollutants via Photocatalytic Response of Graphite Intercalated SnO2 Nanophotocatalysts 石墨插层SnO2纳米光催化剂光催化降解污染物的分析方法

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-02-24 DOI: 10.1007/s12678-025-00938-6

Ashish Kumar, Deepika Maan, Karishma Jain, Harish Kumar Meena, Garima Agarwal, Sushil Kumar Jain, Reena Verma, Balram Tripathi

In this study, we are reporting the reaction mechanism for the photocatalytic response of graphite (Gr) intercalated tin oxide (SnO₂) nanophotocatalysts. These nanocomposites were prepared using sonication method and characterized by using X-ray diffractometer (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX), UV–Vis spectroscopy, photoluminescence (PL) spectroscopy, and Fourier transform infrared (FT-IR) spectroscopy. The XRD spectra confirmed average crystallite size of the order of 29 nm and the XRD patterns showed the presence of the tetragonal structure. Crystallite size was calculated using Debye–Scherrer’s and Williamson-Hall (WH) equations. The degradation of dye and photocatalytic response were optimized with tuning of various parameters such as ppm level of adsorbate and time response.

Graphical Abstract

在这项研究中，我们报道了石墨（Gr）插层氧化锡（SnO2）纳米光催化剂的光催化反应机理。采用超声法制备了这些纳米复合材料，并利用x射线衍射仪（XRD）、扫描电镜（SEM）、能量色散x射线分析（EDX）、紫外可见光谱（UV-Vis）、光致发光（PL）光谱和傅里叶变换红外（FT-IR）光谱对其进行了表征。XRD谱图证实了晶体的平均尺寸为29 nm左右，XRD谱图显示了晶体的四边形结构。采用Debye-Scherrer和Williamson-Hall （WH）方程计算晶体尺寸。通过调整吸附质浓度（ppm）和时间响应等参数，对染料降解和光催化反应进行了优化。图形抽象

引用次数: 0

Detection and Separation of Paracetamol and p-Aminophenol Using Activated Glassy Carbon Electrodes 使用活性玻璃碳电极检测和分离扑热息痛和对氨基苯酚

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-02-19 DOI: 10.1007/s12678-025-00941-x

Dereje Yenealem, Shimelis Admassie, Santhi Raju Pilli, Sowjanya Motana, Dessie Tibebe

The square wave voltammetry (SWV) method was utilized to simultaneously find paracetamol and p-aminophenol (PAP) by applying an activated glassy carbon electrode (AGCE). The results showed that the AGCE effectively facilitated the oxidation of both compounds, exhibiting a significant separation of their oxidation peaks by approximately 280.5 mV, which is sufficient for their concurrent detection. The linear ranges and detection limits were found to be 6.0 × 10⁻⁷–1.0 × 10⁻⁴ mol L⁻¹ and 1.0 × 10⁻⁶–8.0 × 10⁻⁴ mol L⁻¹; 1.39 × 10⁻⁸ mol L⁻¹ and 1.91 × 10⁻⁸ mol L⁻¹ for APAP and PAP, correspondingly. Ultimately, the adopted method was effectively implemented to measure APAP and PAP in commercial-grade tablets, yielding average recoveries of 103.1% for APAP and 101.0% for PAP.

Graphical Abstract

采用方波伏安法（SWV）在活性炭电极（AGCE）上同时检测对乙酰氨基酚（paracetamol）和对氨基酚（PAP）。结果表明，AGCE有效地促进了两种化合物的氧化，其氧化峰的分离约为280.5 mV，足以进行同时检测。线性范围为6.0 × 10−7 ~ 1.0 × 10−4 mol L−1，检出限为1.0 × 10−6 ~ 8.0 × 10−4 mol L−1；APAP和PAP分别为1.39 × 10−8 mol L−1和1.91 × 10−8 mol L−1。最终，所采用的方法有效地用于测定商品级片剂中的APAP和PAP， APAP的平均回收率为103.1%，PAP的平均回收率为101.0%。图形抽象

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引用次数: 0

Assessment of a New Epoxy Resin for Corrosion Prevention of Mild Steel in HCl Environment: Experimental and Theoretical Analyses 一种新型环氧树脂在HCl环境下对低碳钢防腐性能的评价：实验与理论分析

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis

Pub Date : 2025-02-17 DOI: 10.1007/s12678-025-00933-x

Abdeslam El Amri, Naoual El-Aouni, Omar Dagdag, Abdelhay El Amri, Ihamdane Rachid, Avni Berisha, Hansang Kim, Rajesh Haldhar, Mohamed Rafik, W. B. Wan Nik, Mohamed Ebn Touhami, Nadia Dkhireche

In this work, we investigate whether bisphenol S tetraglycidyl ether dianiline dipropoxy (TGEDADPDS) can mitigate mild steel (MS) corrosion. One material that is well-known for its exceptional mechanical qualities as well as its affordability is TGEDADPDS. However, because of its susceptibility to corrosion, particularly in environments containing hydrochloric acid (HCl), corrosion inhibitor research is necessary. Several investigation methods, including surface analysis along with electrochemical testing, were used to assess how well TGEDADPDS inhibited a particular process. The results indicate that, in a 1.0 M HCl medium at 298 K, the optimal concentration of TGEDADPDS is 10⁻³ M. As measured by electrochemical impedance spectroscopy (EIS) and potentiodynamic plot (PDP), this concentration has an inhibitory efficiency of 97% and 96%, respectively. Following the Langmuir isotherm, the TGEDADPDS molecule demonstrated exothermic adsorption on MS. By preventing anodic and cathodic reactions, the adsorption technique known as chemisorption dramatically lowers mild steel corrosion. The adsorption process is defined by a ΔG_ads value of − 48.43 kJ/mol. Furthermore, scanning electron microscopy–energy-dispersive spectroscopy surface examination verified that a protective TGEDADPDS coating had formed on the electrode surface, which significantly decreased metal dissolution in the presence of hostile ions. Density-functional theory and Monte Carlo, along with molecular dynamics simulations, are used in the study’s theoretical calculations.

Graphical Abstract

在这项工作中，我们研究了双酚S四缩水甘油酯醚二苯胺二丙氧基（TGEDADPDS）是否可以减轻低碳钢（MS）的腐蚀。TGEDADPDS是一种以其卓越的机械性能和可负担性而闻名的材料。然而，由于其易受腐蚀，特别是在含有盐酸（HCl）的环境中，因此研究缓蚀剂是必要的。几种调查方法，包括表面分析和电化学测试，用于评估TGEDADPDS对特定过程的抑制程度。结果表明，在HCl浓度为1.0 M，温度为298 K的条件下，TGEDADPDS的最佳浓度为10−3 M，通过电化学阻抗谱（EIS）和电位图（PDP）测试，该浓度的抑菌率分别为97%和96%。根据Langmuir等温线，TGEDADPDS分子在ms上表现出放热吸附，通过防止阳极和阴极反应，化学吸附技术显著降低了低碳钢的腐蚀。吸附过程的ΔGads值为−48.43 kJ/mol。此外，扫描电子显微镜-能量色散光谱表面检查证实，在电极表面形成了保护性的TGEDADPDS涂层，在敌对离子存在下显著降低了金属的溶解。密度泛函理论和蒙特卡罗，以及分子动力学模拟，被用于研究的理论计算。图形抽象

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引用次数: 0