Journal of Electroanalytical Chemistry最新文献_第2页

MOF particles (UiO-66 and UiO-66(Ce))/cellulose nanocomposite separators with regulating ion transport controllably for lithium battery 锂电池用可调控离子传输的MOF颗粒(UiO-66和UiO-66(Ce))/纤维素纳米复合材料隔膜

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-11 DOI: 10.1016/j.jelechem.2023.117708

Jiajin Zhang , Zixuan Zhang , Tong Wu , Xiaogang Luo

{"title":"MOF particles (UiO-66 and UiO-66(Ce))/cellulose nanocomposite separators with regulating ion transport controllably for lithium battery","authors":"Jiajin Zhang , Zixuan Zhang , Tong Wu , Xiaogang Luo","doi":"10.1016/j.jelechem.2023.117708","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117708","url":null,"abstract":"<div>Commercial separators result in poor lithium battery performance due to low electrolyte wettability and non-selective ion transport. In this work, the cellulose membrane with excellent electrolyte wettability was selected as the skeleton, and the MOF nanoparticles were added by the blending method. The composite cellulose membrane with uniform pore size was prepared by casting process. The cellulose membrane skeleton promoted the absorption of electrolytes. The Lewis acid sites presented in UiO-66 facilitated the dissociation of lithium salts by attracting PF6− anions. The OMS (open metal site) provided by UiO-66(Ce) further adsorbs anions and solvent molecules, effectively regulated ion transport, maintained a stable and efficient cycle life, and reduced lithium dendrite deposition. The LiFePO4/Li equipped with UiO-66/CM showed a capacity retention rate of 71.70%, while the LiFePO4/Li equipped with UiO-66 (Ce)/CM showed a capacity retention rate of 93.80 % after 200 cycles at 0.5C. Therefore, the developed strategy may provide a powerful way to improve electrolyte wettability and effectively regulate ion transport.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117708"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3037478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Transition metal oxides for bifunctional ORR/OER electrocatalysis in unitized regenerative fuel cells 过渡金属氧化物用于组合式再生燃料电池双功能ORR/OER电催化

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-07 DOI: 10.1016/j.jelechem.2023.117709

Dušan Mladenović , Ana Mladenović , Diogo M.F. Santos , Ayşe B. Yurtcan , Šćepan Miljanić , Slavko Mentus , Biljana Šljukić

{"title":"Transition metal oxides for bifunctional ORR/OER electrocatalysis in unitized regenerative fuel cells","authors":"Dušan Mladenović , Ana Mladenović , Diogo M.F. Santos , Ayşe B. Yurtcan , Šćepan Miljanić , Slavko Mentus , Biljana Šljukić","doi":"10.1016/j.jelechem.2023.117709","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117709","url":null,"abstract":"<div>Among many alternatives to fossil fuel-based energy systems, one of the most promising is based on hydrogen energy and its production and use in unitized regenerative fuel cells as the primary energy conversion devices. However, there are some setbacks and challenges when designing suitable and efficient electrocatalysts for these devices. The most effective and durable catalysts are based on platinum–group metals, with low abundance and unbearably high prices. Many attempts were undertaken to overcome this setback by designing catalysts suitable for massive commercial use. This review paper focuses on recent advances in developing bifunctional catalysts for oxygen reduction and oxygen evolution catalysis in alkaline media, based on abundant transition metal oxides (TMOs): MnO2, NiO, and TiO2. The problem of unifying parameters to compare the effectiveness of different electrocatalysts is emphasized. This review discusses the most promising alternative bifunctional electrocatalysts by comparing the performance of TMOs with some precious metal catalysts used as benchmarks.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117709"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"2907079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Modeling of charging dynamics in electrochemical systems with a graphene electrode 石墨烯电极电化学系统的充电动力学建模

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-10 DOI: 10.1016/j.jelechem.2023.117711

Mahdi Yavarian , Roderick Melnik , Z.L. Mišković

引用次数: 0

Facilitated catalytic surface engineering of MnCo2O4 electrocatalyst towards enhanced oxygen evolution reaction 促进了MnCo2O4电催化剂对强化析氧反应的催化表面工程

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-12 DOI: 10.1016/j.jelechem.2023.117716

Abu Talha Aqueel Ahmed , Sankar Sekar , Shubhangi S. Khadtare , Nurul Taufiqu Rochman , Sejoon Lee , Hyungsang Kim , Deuk Young Kim , Hyunsik Im , Abu Saad Ansari

{"title":"Facilitated catalytic surface engineering of MnCo2O4 electrocatalyst towards enhanced oxygen evolution reaction","authors":"Abu Talha Aqueel Ahmed , Sankar Sekar , Shubhangi S. Khadtare , Nurul Taufiqu Rochman , Sejoon Lee , Hyungsang Kim , Deuk Young Kim , Hyunsik Im , Abu Saad Ansari","doi":"10.1016/j.jelechem.2023.117716","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117716","url":null,"abstract":"<div>The overall conversion efficiency of water electrolysis is primarily restricted by the sluggish kinetics of the oxygen evolution reaction (OER). To overcome the OER bottleneck, fundamental scientific attention is keenly directed toward the development of durable, cost-effective, and highly efficient catalysts, and therefore, the focus of current research. Herein, we report the facile fabrication of promising noble–metal–free oxygen defects engineered MnCo2O4 (Od-MnCo2O4) catalyst as a highly efficient OER water electrocatalyst in an alkaline KOH medium. The MnCo2O4 nanosheet is directly grown on the nickel foam and dramatically changes to a crumpled sphere after NaBH4 treatment, which results in increased oxygen defects (Od). The engineered Od in MnCo2O4 might modify their electronic structure effectively, which results in improved electrical conductivity and a large quantity of electrochemically accessible active surface area. The Od-MnCo2O4 catalyst demonstrates an outstanding OER activity and exhibits a small overpotential of 250 and 316 mV at a current density of 10 and 100 mA cm−2, respectively, with a modest Tafel slope of 64 mV dec–1. The Od-MnCo2O4 catalyst also demonstrates excellent perseverance till 60 h upon continuous chronopotentiometric test even at 100 mA cm−2 and further reveals a static potential response at low and high rates. The excellent OER performance is ascribed to enhanced electrochemically active sites and improved electronic conductivity aroused from the NaBH4 reduction.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117716"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3208719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the impact of reaction parameters on electrochemical reduction of CO2 to methanol: Activity relationship of cuprite@polyaniline electrodes 了解反应参数对CO2电化学还原制甲醇的影响:cuprite@polyaniline电极的活性关系

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-15 DOI: 10.1016/j.jelechem.2023.117721

Atul A. Pawar, Harshad A. Bandal, Anand Rajkamal, Hern Kim

{"title":"Understanding the impact of reaction parameters on electrochemical reduction of CO2 to methanol: Activity relationship of cuprite@polyaniline electrodes","authors":"Atul A. Pawar, Harshad A. Bandal, Anand Rajkamal, Hern Kim","doi":"10.1016/j.jelechem.2023.117721","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117721","url":null,"abstract":"<div>The carbon dioxide reduction reaction (CO2RR) is a key reaction that efficiently uses CO2 to produce value-added chemicals. However, the main limitation of this reaction is its low selectivity which results in the formation of a variety of by-products. As a result, the current challenge for CO2RR is the efficient formation of product with high Faradaic efficiency (FE). Our main goal is to replace precious metal electrocatalysts with more abundant transition metal/conducting support hybrid catalysts. Herein, we’ve synthesized a cuprite-polyaniline (Cu2O@PANI) composites. The superior catalytic activity in terms of activity and selectivity for methanol (MeOH) synthesis could be attributed to the synergism between Cu2O and PANI that enables it to scale back multiple species, higher electrical conductivity, and lowest resistance during the charge/mass transfer processes. These properties were confirmed using Electrochemical impedance spectroscopy (EIS), Electron transfer rate constant (Ks), Mott-Schottky (MS), Double-layer capacitance (DLC), and Density-functional theory (DFT) analysis. Based on these findings Cu2O@PANI matrix easily forms many intermediate (CO) species and maintains a higher CO2 concentration around the electrode surface throughout the experiment. The results of the given electrocatalytic system show that the Cu2O@PANI matrix significantly suppressed the by-product throughout the experiment, resulting in MeOH (45.21%) FE within 90 min. Given these benefits, the catalytic system is appropriate for CO2RR.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117721"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3463525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improving electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via polyanionic TiP2O7 coating 通过聚阴离子TiP2O7涂层改善LiNi0.8Co0.1Mn0.1O2阴极的电化学性能

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-07 DOI: 10.1016/j.jelechem.2023.117710

Yi-Chao Wang , Liang Wen , Zhi-Wei Liu , Peng Xu , Si-Lai Zheng , Ming-Guang Liu , Ji-Zhou Kong , Qian-Zhi Wang , Hong-Yu Wei , Fei Zhou , Kostya Ken Ostrikov

{"title":"Improving electrochemical performance of LiNi0.8Co0.1Mn0.1O2 cathode via polyanionic TiP2O7 coating","authors":"Yi-Chao Wang , Liang Wen , Zhi-Wei Liu , Peng Xu , Si-Lai Zheng , Ming-Guang Liu , Ji-Zhou Kong , Qian-Zhi Wang , Hong-Yu Wei , Fei Zhou , Kostya Ken Ostrikov","doi":"10.1016/j.jelechem.2023.117710","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117710","url":null,"abstract":"<div>Safety issues of common rechargeable Li-ion batteries (LIB) necessitate urgent development of alternative high-performance electrode materials. Lithiated nickel-rich oxides (LiNi1-x-yMnxCoyO2) are promising LIB cathode materials, but they suffer from structural instabilities causing major capacity loss. To address this issue, here we use a robust ethanol-based wet coating process to coat a LiNi0.8Co0.1Mn0.1O2 LIB cathode material with polyanionic compound TiP2O7. The coating layer does not affect the phase structure of LiNi0.8Co0.1Mn0.1O2 and ensures a remarkable electrochemical performance, evidenced by the high initial Coulombic efficiency, durable cyclic stability, and excellent rate performance. The mechanisms leading to the achieved improvements are related to the effects of the coating layer which improved the Li+ diffusion capability and the electrochemical polarization. The TiP2O7 layer protects the electrode from the electrolyte by suppressing side reactions such as HF acidic attack and the associated dissolution of transition metal ion. Moreover, the unique three-dimensional (XOn)m- framework of the TiP2O7 polyanion provides plentiful accommodation sites and channels for the Li-ions diffusion. The demonstrated approach opens new avenues for practical applications of electrochemically active coatings in diverse energy storage devices and systems.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117710"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3407119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of polymer additive on structural and morphological properties of Cu-electrodeposition from an acid sulfate electrolyte: Experimental and theoretical studies 聚合物添加剂对酸性硫酸电解质电沉积铜的结构和形态性能的影响:实验和理论研究

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-17 DOI: 10.1016/j.jelechem.2023.117722

Zakia Aribou , Nidal Khemmou , Rida Allah Belakhmima , Iman Chaouki , Mohamed Ebn Touhami , Rachid Touir , Said Bakkali

{"title":"Effect of polymer additive on structural and morphological properties of Cu-electrodeposition from an acid sulfate electrolyte: Experimental and theoretical studies","authors":"Zakia Aribou , Nidal Khemmou , Rida Allah Belakhmima , Iman Chaouki , Mohamed Ebn Touhami , Rachid Touir , Said Bakkali","doi":"10.1016/j.jelechem.2023.117722","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117722","url":null,"abstract":"<div>In this study, the effects of poly(oxy-1,2-ethanediyl), alpha-(4-nonylphenyl)-omega-hydroxy-,branched (ANP) under various concentrations on the Cu-electrodeposition on the brass surface were investigated. The leveling, grain refining, and brightening agent effects have been identified for the used ANP additive. In addition, the Cu-electrodeposits morphology was studied by Scanning Electron Microscopy (SEM) coupled with Energy dispersive X-ray analysis (EDS) and Atomic Force Microscopy (AFM). The cyclic voltammetry technique, the quantum chemical calculations, and molecular dynamics (MD) simulations were also used to explain the Cu-electrodeposition mechanism. Finally, electrochemical measurements were employed to study the ANP effect on the Cu-electrodeposit resistance in a 3.5 wt% NaCl medium. The cyclic voltammetry demonstrated that the studied system is irreversible and that the kinetics of the Cu-electrodeposition reaction are controlled by diffusion. In addition, the SEM/EDS and AFM results revealed that the ANP addition increases the Cu-electrodeposit with an improvement in its roughness degree and crystallite size. In the same context, the quantum chemical calculations and molecular dynamics (MD) simulations suggested that ANP may be strongly adsorbed on the brass and Cu-electrodeposit surfaces. Toward the end, the electrochemical measurements results indicated that the polarization resistance of the Cu-deposit increases with the presence of ANP in the copper bath, demonstrating its good corrosion resistance in marine medium.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117722"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3210290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Electrochemical and microscopic characterization of titanium dioxide electrodes modified with platinum nanoparticles 纳米铂修饰二氧化钛电极的电化学和微观表征

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-14 DOI: 10.1016/j.jelechem.2023.117717

Francisco A. Filippin , Mariana I. Rojas , Lucía B. Avalle

{"title":"Electrochemical and microscopic characterization of titanium dioxide electrodes modified with platinum nanoparticles","authors":"Francisco A. Filippin , Mariana I. Rojas , Lucía B. Avalle","doi":"10.1016/j.jelechem.2023.117717","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117717","url":null,"abstract":"<div>This study investigates glass/Ti/Pt/TiO2 surfaces, wherein Pt nanoparticles (NPs) were potentiostatically deposited with an amount of Pt that varies based on deposition time. The size and distribution of NPs were analyzed by scanning electron microscopy (SEM). Subsequently, a thicker titanium dioxide film was grown via anodization. Topography and roughness were examined by atomic force microscopy (AFM). Remarkably, TiO2 grows independently of Pt NPs and remains stable under working conditions, including acid, neutral, and alkaline media. Under steady-state conditions, the open circuit potentials (OCPs) of the modified semiconductor/electrolyte interfaces corresponding to 1, 5, and 10 s of electrodeposited Pt, showed a shift of 167 mV, 42 mV, and 24 mV toward more positive values, respectively. Notably, these surfaces exhibit the activity of a Pt quasi-electrode and the band structure of a titanium dioxide semiconductor, making them ideal for use as photoanodes. In addition, it can be highlighted that the methodology employed in the preparation of the surfaces allows for reproducibility.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117717"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3146951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface-vacancy filling engineered MnO cobalt with cobalt phthalocyanine for admirable suppression of volume expansion and kinetics enhancement 用酞菁钴填充MnO钴表面空位可有效抑制体积膨胀和提高动力学

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-15 DOI: 10.1016/j.jelechem.2023.117720

Wenhao Yu, Shaofeng Xu, Jiancong Guo, Weiqiang Kong, Wenruo Li, Xu Han, Haoyuan Zhu, Shun Liu, Luzheng Zhao, Zhongsheng Wen

{"title":"Surface-vacancy filling engineered MnO cobalt with cobalt phthalocyanine for admirable suppression of volume expansion and kinetics enhancement","authors":"Wenhao Yu, Shaofeng Xu, Jiancong Guo, Weiqiang Kong, Wenruo Li, Xu Han, Haoyuan Zhu, Shun Liu, Luzheng Zhao, Zhongsheng Wen","doi":"10.1016/j.jelechem.2023.117720","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117720","url":null,"abstract":"<div>MnO has the advantages of high theoretical capacity, abundant resources and environmental friendliness, which is a potential material for lithium-ion storage. However, severe volume expansion and sluggish kinetics make MnO difficult to maintain long-term stability. In this study, MnO/C@CoPPc micro-rods composed of coral-like MnO/C nanobundles coated with CoPPc was synthesized via facile method. CoPPc impregnated into the empty space and simultaneously coated on the surface of the needles of MnO/C functions as an elastic layer to accommodate the mechanical stress caused by volume expansion of MnO/C, and simultaneously function as a buffering layer to keep electric disconnection on cycling. The volume of MnO/C is dramatically suppressed from 370% to 120%, and the reversible capacity is improved. Therefore, the configured MnO/C@CoPPc exhibits a high stability and delivers a high reversible capacity of 679.6 mAh/g after 200 cycles.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117720"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3146953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Highly dispersed gold nanoparticles anchoring on COFTAPB-DMTP for electrochemical detection of paracetamol 高分散金纳米粒子锚定在COFTAPB-DMTP上用于对乙酰氨基酚的电化学检测

IF 4.5 3区化学

Journal of Electroanalytical Chemistry Pub Date : 2023-10-01 Epub Date: 2023-08-18 DOI: 10.1016/j.jelechem.2023.117725

Jiawei Liu, Xia Gong, Qi-e Zhang, Shuwu Liu, Guixia Tan, Linbo Deng, Limin Lu, Linyu Wang

{"title":"Highly dispersed gold nanoparticles anchoring on COFTAPB-DMTP for electrochemical detection of paracetamol","authors":"Jiawei Liu, Xia Gong, Qi-e Zhang, Shuwu Liu, Guixia Tan, Linbo Deng, Limin Lu, Linyu Wang","doi":"10.1016/j.jelechem.2023.117725","DOIUrl":"https://doi.org/10.1016/j.jelechem.2023.117725","url":null,"abstract":"<div>Small size Au nanoparticles (AuNPs) have aroused wide interest in electrochemical sensing due to its high surface atom utilization and superior electrical conductivity. However, there was a great challenge to balance the stability and small-size of AuNPs because of their large specific surface and high surface energy. Regarding this issue, herein, COFTAPB-DMTP was proposed as guiding support substrate for the synthesis of highly dispersed and small size AuNPs, where the uniform functional sites such N, O atoms on COFTAPB-DMTP could act as anchor points to induce in-situ reduction of AuNPs, and the confinement effects from the nanopore of COFTAPB-DMTP could limit their size. Then, an electrochemical paracetamol (PA) sensor was designed based on AuNPs@COFTAPB-DMTP since the abundant active centers and outstanding electrical conductivity of highly dispersed small size AuNPs conferred the composite excellent sensing performance. Moreover, the large specific surface, ordered pore channels and abundant heteroatomic functional groups of COFTAPB-DMTP could achieve high enrichment capacity toward PA molecules on electrode surface through pore effect, hydrogen bonding and electrostatic interaction. Benefiting from the combination between AuNPs and COFTAPB-DMTP, the AuNPs@COFTAPB-DMTP based sensor presents excellent analytical performance in term of low limit of detection (22 nM), satisfactory stability, reproducibility and selectivity. It indicated that COFs can be used as promising inducible substrate material for the preparation of highly dispersed and small size metal nanoparticles.</div>","PeriodicalId":50545,"journal":{"name":"Journal of Electroanalytical Chemistry","volume":"946 ","pages":"Article 117725"},"PeriodicalIF":4.5,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"3405196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0