Electrocatalysis最新文献

Electrocatalytic Oxidation of Glycerol using Electrolessly Deposited CuNiSnP Electrocatalysts Supported on Carbon in Alkaline Media 碳负载CuNiSnP电催化剂在碱性介质中催化氧化甘油的研究

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-08-30 DOI: 10.1007/s12678-023-00840-z

Wasu Chaitree, Joongjai Panpranot

{"title":"Electrocatalytic Oxidation of Glycerol using Electrolessly Deposited CuNiSnP Electrocatalysts Supported on Carbon in Alkaline Media","authors":"Wasu Chaitree, Joongjai Panpranot","doi":"10.1007/s12678-023-00840-z","DOIUrl":"10.1007/s12678-023-00840-z","url":null,"abstract":"<div><p>The electro-oxidation of glycerol (EOG) has gained wide attention as an alternative to producing value-added chemicals for glycerol valorization. In this study, a multimetallic electrocatalyst containing copper (Cu), nickel (Ni), tin (Sn), and phosphorus (P) was supported on a carbon catalyzed substrate (CCS) using an electroless deposition technique and evaluated for EOG. The effect of the electroless deposition time (15, 30, and 45 min) was also studied. Characterization of the CuNiSnP/CCS electrocatalyst via X-ray diffraction, scanning electron microscopy, and inductively coupled plasma optical emission spectroscopy revealed the formation of a thin-film morphology containing Cu as the main species on the surface and covering the carbon substrate. The electrochemical performance evaluation showed that the electrocatalyst obtained after 30 min of electroless deposition produced the maximum current density (6.5 mA/cm<sup>2</sup>). The multimetallic composition of CuNiSnP/CCS provided better reaction performance than related tri- (CuNiP/CCS and NiSnP/CCS), bi- (NiP/CCS), and monometallic (Cu/CCS) composites according to the peak current densities for the forward (<i>i</i><sub><i>f</i></sub>) and backward (<i>i</i><sub><i>b</i></sub>) oxidation<i>,</i> the <i>i</i><sub><i>f</i></sub>/<i>i</i><sub><i>b</i></sub> ratio, and the onset potential. Furthermore, CuNiSnP/CCS exhibited more stable and stronger resistance to poisoning. Overall, this study demonstrates the potential of the new electrode material CuNiSnP/CCS as an effective electrocatalyst for EOG.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"840 - 856"},"PeriodicalIF":3.1,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43653964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Novel Multilayer Fiber Mesh Electrode for Ammonia Nitrogen Removal from Wastewater 一种新型的多层纤维网电极去除废水中的氨氮

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-08-19 DOI: 10.1007/s12678-023-00841-y

Liyan Liao, Jiaxin Guo, Yibo Li, Yalin Wang, Diwen Ying, Jinping Jia

{"title":"A Novel Multilayer Fiber Mesh Electrode for Ammonia Nitrogen Removal from Wastewater","authors":"Liyan Liao, Jiaxin Guo, Yibo Li, Yalin Wang, Diwen Ying, Jinping Jia","doi":"10.1007/s12678-023-00841-y","DOIUrl":"10.1007/s12678-023-00841-y","url":null,"abstract":"<div><p>A novel multilayer fiber mesh electrode was developed and manufactured at the pilot scale to treat ammonia nitrogen wastewater containing chlorine. The performance of the new electrode was investigated and evaluated in a lab-scale reactor and a pilot-scale reactor. The results of electrochemical characterization methods showed that the multilayer fiber mesh electrode had better performance than the plate electrode under the same conditions. Moreover, the ammonia removal efficiency with the multilayer fiber mesh electrode reached 100% in 30 min, which was five times that with the traditional plate electrode. The influences of different operating parameters, such as current density, pH value, and chloride ion concentration, were investigated in the lab-scale reactor. Interestingly, the ammonia removal efficiency in the reactor with the multilayer fiber mesh electrode was higher when the pH value was lower, which was totally different from the results using the plate electrode. The main reason for this phenomenon is that more active chlorine free radicals generated at low pH values can be effectively utilized in the through-flow reactor with the multilayer fiber mesh electrode. Furthermore, the current efficiency of the reaction and the anode efficiency of the electrode showed good performance. Furthermore, this configuration was effective in removing ammonia from real leachate in the pilot-scale test. The multilayer fiber mesh electrode in flow-through mode was shown to be a promising material for the treatment of ammonia nitrogen wastewater containing chloride ions.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"829 - 839"},"PeriodicalIF":3.1,"publicationDate":"2023-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43166045","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Simultaneous Electrocatalytic Measurement of Dopamine and Acetaminophen by Nanosensor Based on Ag@Polyoxometalate@Reduced Graphene Oxide and Ionic Liquid 基于纳米传感器的多巴胺和对乙酰氨基酚同时电催化测定Ag@Polyoxometalate@还原氧化石墨烯和离子液体

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-08-12 DOI: 10.1007/s12678-023-00838-7

Haniyeh Shafiei, Seyed Karim Hassaninejad-Darzi

{"title":"Simultaneous Electrocatalytic Measurement of Dopamine and Acetaminophen by Nanosensor Based on Ag@Polyoxometalate@Reduced Graphene Oxide and Ionic Liquid","authors":"Haniyeh Shafiei, Seyed Karim Hassaninejad-Darzi","doi":"10.1007/s12678-023-00838-7","DOIUrl":"10.1007/s12678-023-00838-7","url":null,"abstract":"<div><p>A novel electrochemical nanosensor was established for the simultaneous measurement of dopamine (DA) and acetaminophen (AC). The nanosensor was achieved by modification of carbon paste electrode (CPE) by Ag nanoparticle, polyoxometalate, reduced graphene oxide (Ag@POM@rGO), and ionic liquid (IL). The electrochemical behaviors of DA and AC were evaluated by Ag@POM@rGO-IL/CPE and various electrochemical methods. Design-Expert software by response surface methodology (RSM) approach was utilized to consider the interaction between the different factors. The best electrochemical response was attained with 0.01 g of IL and 0.04 g of Ag@POM@rGO in the modified electrode, phosphate buffer solution (0.1 M, pH 7.0), and a sweep rate of 0.07 V s<sup>−1</sup>. In the optimum situation, the calibration curves for DA and AC were achieved in a square wave voltammetry (SWV) manner, and linear dynamic ranges (LDR) were obtained to be 0.05–115.04 µM and 0.1–137.90 µM for DA and AC, respectively. The limit of detection (LOD) was attained to be 17.0 for DA and 37.0 nM for AC. The Ag@POM@rGO-IL/CPE showed good stability, productivity and repeatability, and advanced recovery, and it has a little price and low background current. Also, the usage of this nanosensor was studied by measuring the DA and AC in the human plasma by means of worthy recovery. This technique is easy, rapid, and cheap and can be utilized as a significant device in the quantitative analysis of the medicinal product.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 6","pages":"811 - 828"},"PeriodicalIF":3.1,"publicationDate":"2023-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45181923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Electrodeposition of Ni-Co-S Electrocatalyst Using 2,5-dimercapto-1,3,4-thiadiazole as S Precursor for Hydrogen Evolution Reaction at Neutral pH 以2,5-二巯基-1,3,4-噻二唑为S前驱体的Ni-Co-S电催化剂在中性pH下电沉积的析氢反应

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-07-18 DOI: 10.1007/s12678-023-00837-8

Yeosol Yoon, Sehyun Yoo, Taeho Lim

{"title":"Electrodeposition of Ni-Co-S Electrocatalyst Using 2,5-dimercapto-1,3,4-thiadiazole as S Precursor for Hydrogen Evolution Reaction at Neutral pH","authors":"Yeosol Yoon, Sehyun Yoo, Taeho Lim","doi":"10.1007/s12678-023-00837-8","DOIUrl":"10.1007/s12678-023-00837-8","url":null,"abstract":"<div><p>Among various chalcogenide materials, transition metal sulfides are known to be effective catalysts for the electrochemical hydrogen evolution reaction (HER). In particular, Ni-Co-S is a promising material for the next generation of non-precious metal HER catalysts due to its excellent HER activity in neutral pH solutions. Ni-Co-S is also advantageous in large-scale applications, as it enables relatively simple catalytic synthesis through electrodeposition. In this study, we employed a new S precursor, 2,5-dimercapto-1,3,4-thiadiazole (DMTD), for the electrodeposition of Ni-Co-S, instead of the conventional S precursor, thiourea (TU). Ni-Co-S synthesized with DMTD (Ni-Co-S<sub>DMTD</sub>) showed enhanced HER activity at neutral pH compared to that synthesized with TU (Ni-Co-S<sub>TU</sub>). It has been found that this improvement in activity is due to the large surface area and high S content of Ni-Co-S<sub>DMTD</sub>. The S content and HER activity of Ni-Co-S<sub>DMTD</sub> depend on the concentration of DMTD. At the optimal DMTD concentration (12 mM), Ni-Co-S<sub>DMTD</sub> exhibited an overpotential of 303 mV at a current density of 10 mA cm<sup>− 2</sup> and a Tafel slope of 99 mV dec<sup>− 1</sup> in a phosphate buffer solution (pH 7.4).</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"800 - 809"},"PeriodicalIF":3.1,"publicationDate":"2023-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4721673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

A Review on Monitoring of Organic Pollutants in Wastewater Using Electrochemical Approach 电化学法监测废水中有机污染物的研究进展

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-07-17 DOI: 10.1007/s12678-023-00834-x

Azeez Olayiwola Idris, Benjamin Orimolade, Lynn Dennany, Bhekie Mamba, Shohreh Azizi, K. Kaviyarasu, Malik Maaza

引用次数: 0

Effect of MnO Content on the Oxygen Reduction Activity of MnO/C Nanostructures MnO含量对MnO/C纳米结构氧还原活性的影响

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-07-10 DOI: 10.1007/s12678-023-00836-9

Vineet Mishra, Biswaranjan D. Mohapatra, Tapan Kumar Ghosh, G. Ranga Rao

{"title":"Effect of MnO Content on the Oxygen Reduction Activity of MnO/C Nanostructures","authors":"Vineet Mishra, Biswaranjan D. Mohapatra, Tapan Kumar Ghosh, G. Ranga Rao","doi":"10.1007/s12678-023-00836-9","DOIUrl":"10.1007/s12678-023-00836-9","url":null,"abstract":"<div><p>Manganese oxide based materials are considered as alternate non-noble metal electrocatalysts for oxygen reduction reaction (ORR). These materials possess rich redox chemistry and can decompose hydrogen peroxide disproportionately to drive the oxygen reduction towards efficient 4-electron pathway. In this work, a set of MnO nanostructures supported on activated charcoal (MnO/C) with varying MnO loadings are prepared by ball milling followed by in-situ pyrolysis. The MnO/C composites are tested for ORR activity by employing cyclic voltammetry and linear sweep voltammetry using rotating-ring disk electrode (RRDE) in 0.1 M KOH. The results indicate that the ORR activity as well as catalytic pathways are sensitive to MnO loading. The ORR activities of the composites follow volcano type relationship with the quantity of MnO loadings. The role of MnO loading on surface morphology, hydrophilicity, electrochemical double layer capacitance (C<sub>dl</sub>) and electrochemical active surface area (ECSA) of the composites has been investigated and correlated with ORR activity. Among the MnO electroctalysts studied, 18 wt% MnO loaded sample showed the highest activity, close to that of standard Pt/C, with onset potential of 1.02 V vs. RHE and 3.48 mA cm<sup>-2</sup> limiting disk current in RRDE at 0.2 V. This electrocatalyst also preferred 4-electron reduction pathway in ORR and produced least amount of hydrogen peroxide. No hydrophilicity effect is found on the ORR activity of MnO/C electrocatalysts.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"788 - 799"},"PeriodicalIF":3.1,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00836-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4420254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dandelion-like P-Doped Fe-Co-Se Grown on Carbon Cloths for Enhanced Electrocatalytic Oxygen Evolution 蒲公英样p掺杂Fe-Co-Se在碳布上生长增强电催化析氧

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-07-04 DOI: 10.1007/s12678-023-00835-w

Yingping Zheng, Dehua Yu, Ke Zhang, Wei Xu, Kaili Ma, Yuhang Wang, Yongbing Lou

{"title":"Dandelion-like P-Doped Fe-Co-Se Grown on Carbon Cloths for Enhanced Electrocatalytic Oxygen Evolution","authors":"Yingping Zheng, Dehua Yu, Ke Zhang, Wei Xu, Kaili Ma, Yuhang Wang, Yongbing Lou","doi":"10.1007/s12678-023-00835-w","DOIUrl":"10.1007/s12678-023-00835-w","url":null,"abstract":"<div><p>As a representative anodic reaction, the oxygen evolution reaction (OER) is often combined with hydrogen evolution, carbon dioxide reduction, and other cathodic reactions. Bimetallic selenides can satisfy the requirement of efficiency and economy for OER. However, the OER performance of Fe-Co-Se is less than satisfactory, restricted by the limited inherent active sites. Therefore, by doping P into Fe-Co-Se, the electron density and mass transfer were successfully adjusted. The 3D dandelion-like flower Fe-Co-Se-P/CC showed η<sub>10</sub> of 210 mV and the 45.3 mV dec<sup>−1</sup> Tafel slope better than Fe-Co-Se/CC and RuO<sub>2</sub>. Experimental investigations demonstrated that outstanding OER activity was ascribed to the double modulation influences of P dopant both in electron environment and morphology which could not only improve conductivity but also enrich catalytic reactive sites. This work presents another choice for the design of a transition metal OER catalyzer and propels the development of electrocatalytic oxygen production to higher efficiency and lower cost.</p><h3>Graphical Abstract</h3><p>3D dandelion-like flowers Fe<b>-</b>Co-Se-P structure anchored on carbon cloth has been firstly synthesized as economy and efficient OER electrocatalyst, which displays outstanding catalytic perform ance (equipped with 210 mV low overpotential at η<sub>10</sub>) and stability benefited from the double modulation effect of P doping on the electronic environment and morphology.</p>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"776 - 787"},"PeriodicalIF":3.1,"publicationDate":"2023-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4168064","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Dopamine Electrochemical Sensor Based on Molecularly Imprinted Polymer on Carbon Electrodes with Platinum Nanoparticles 基于铂纳米颗粒碳电极分子印迹聚合物的多巴胺电化学传感器

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-06-07 DOI: 10.1007/s12678-023-00833-y

İzzet Koçak, Berrin Gürler Akyüz

{"title":"Dopamine Electrochemical Sensor Based on Molecularly Imprinted Polymer on Carbon Electrodes with Platinum Nanoparticles","authors":"İzzet Koçak, Berrin Gürler Akyüz","doi":"10.1007/s12678-023-00833-y","DOIUrl":"10.1007/s12678-023-00833-y","url":null,"abstract":"<div><p>This article addresses the construction of a dopamine electrochemical sensor based on a molecularly imprinted polymer on carbon electrodes, for instance, glassy carbon and highly oriented pyrolytic graphite electrodes with the orientation of edge and basal plane by the formation of thiophene acetic acid-dopamine thin film using electropolymerization. The electrochemical deposition of Pt nanoparticles was then carried out at the modified electrode surface, followed by the extraction of dopamine as a template molecule from the generated layer was performed via elution brought on by chemicals. The variables that affect the performance of the imprinted polymer-based sensor, such as monomer-template ratio, immersion time, and the number of electropolymerization cycles, were examined and optimized. To confirm the changes in the oxidation peak current of DA and to investigate the electrochemical behavior of the MIP sensor, cyclic voltammetry, chronoamperometry, and differential pulse voltammetry (DPV) tests were performed. The differential pulse voltammetry studies revealed that, under ideal circumstances, the limit of detection values of the proposed MIP sensor decorated with Pt nanoparticles was found to be 14.40 nmol L<sup>−1</sup>, 42.50 nmol L<sup>−1</sup>, and 0.671 μmol L<sup>−1</sup> for glassy carbon, edge, and basal plane electrodes, respectively. In the presence of interferents with comparable structural chemicals, such as ascorbic acid, uric acid, glucose, o-phenylenediamine, and glycine, the proposed sensor exhibits noticeable selectivity. Dopamine analysis in a human fluid such as blood serum was conducted with success using the devised sensor, which was shown to possess impressive stability and reproducibility.</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"763 - 775"},"PeriodicalIF":3.1,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4305031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Oxygen Reduction Reaction Studies on Pd Coatings Prepared by Galvanic Exchange of Silver, Nickel and Copper 银、镍、铜电交换制备Pd涂层的氧还原反应研究

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-06-06 DOI: 10.1007/s12678-023-00831-0

Audris Mihailovs, Markus Otsus, Arvo Kikas, Vambola Kisand, Aile Tamm, Heiki Erikson, Kaido Tammeveski

引用次数: 0

Cobalt-based Metalloporphyrins As Efficient Electro-catalysts for Hydrogen Evolution From Acetic Acid and Water 钴基金属卟啉作为醋酸和水析氢的高效电催化剂

IF 3.1 4区化学

Electrocatalysis Pub Date : 2023-06-06 DOI: 10.1007/s12678-023-00832-z

Zong Wang, Yin Liu, Ting Li, Yong-Zhen He, Er-Chen Han, Yan-Lin Chen, Xin-Yi Jiang, Chun-Lin Ni, Le-Min Yang, Wei Liu

{"title":"Cobalt-based Metalloporphyrins As Efficient Electro-catalysts for Hydrogen Evolution From Acetic Acid and Water","authors":"Zong Wang, Yin Liu, Ting Li, Yong-Zhen He, Er-Chen Han, Yan-Lin Chen, Xin-Yi Jiang, Chun-Lin Ni, Le-Min Yang, Wei Liu","doi":"10.1007/s12678-023-00832-z","DOIUrl":"10.1007/s12678-023-00832-z","url":null,"abstract":"<div><p>Four molecular electrocatalysts based on cobalt complexes, CoT(X)PP (X = H (<b>1</b>), OH (<b>2</b>), CN (<b>3</b>), COOH (<b>4</b>)), were prepared from <i>meso</i>-tetra-<i>p</i>-X-phenylporphin (H<sub>2</sub>T(X)PP, X = H, OH, CN, COOH) by reaction with cobalt acetate to be used for electrolytic proton or water reduction. The electrochemical properties and the corresponding catalytic activities of these four catalysts were investigated by cyclic voltammetry. Controlled potential electrolysis with gas chromatography analysis confirmed that the turn-over frequencies (TOF) per mol of catalyst per hour were 42.4, 38.6, 55.5, and 70.1 mol H<sub>2</sub> at an overpotential of 941.6 mV (in DMF) in the acetic acid solution containing catalyst. In neutral buffered aqueous solution (pH 7.0), these four molecular catalysts had TOF per mol of catalyst per hour of 352.53, 313.7, 473.4, and 714.6 mol H<sub>2</sub>, respectively, with an overpotential of 837.6 mV, indicating that complex 4 had better activity than complexes <b>1</b>, <b>2</b>, and <b>3</b>. The Faraday efficiencies of complexes <b>1-4</b> were 99.1, 99.6, 100.4, and 99.0% at 72 h of consecutive reduction on a glassy carbon electrode, respectively. These results indicate that the electronic properties of the ligands play a crucial role in determining the catalytic activity of the cobalt complex and are consistent with the phenomenon that the catalytic activity of the benzene porphyrins is significantly increased in the presence of electron-withdrawing groups, and the CoT(COOH)PP is the most active catalyst.</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 </div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 5","pages":"752 - 762"},"PeriodicalIF":3.1,"publicationDate":"2023-06-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00832-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4257301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0