Electrocatalysis最新文献

{"title":"Polymer-based Electrochemical Sensor: Fast, Accurate, and Simple Insulin Diagnostics Tool","authors":"Ivana Šišoláková,&nbsp;Radka Gorejová,&nbsp;Frederika Chovancová,&nbsp;Jana Shepa,&nbsp;Fahanwi Asabuwa Ngwabebhoh,&nbsp;Andrea Straková Fedorková,&nbsp;Petr Sáha,&nbsp;Renáta Oriňaková","doi":"10.1007/s12678-023-00827-w","DOIUrl":"10.1007/s12678-023-00827-w","url":null,"abstract":"<div><p>Study of the use of polymers with higher conductivity like polypyrrole, and polyaniline in the electrochemical insulin sensors can overcome the drawbacks arising from the ongoing use of non-conductive polymer membrane. Conductive polymer membranes maintain the positive properties of polymers, like improved stability, reproducibility, and even increase the current response of the prepared sensor toward insulin oxidation. Three different screen-printed electrodes modified with polyaniline, polypyrrole, or chitosan with electrochemically deposited nickel nanoparticles ensuring insulin oxidation were prepared. The electrode morphology was examined via SEM with EDX analysis. Also, the electroactive surface area and stability were determined by voltammetric methods. Based on the results, the SPCEs modified by polypyrrole and nickel nanoparticles were determined as the most appropriate for the insulin determination. The NiNPs-PPy-SPCE exhibited a linear range (500 nM–5 µM), a low-down limit of detection (38 nM), high sensitivity (3.98 µA/µM), and excellent result from insulin determination in real samples (human blood serum). The results confirmed the high potential of developed sensor for future research focused on detection of insulin via electrochemistry methods in clinical samples.</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":"697 - 707"},"PeriodicalIF":3.1,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00827-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4432696","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}

{"title":"Individual and Simultaneous Determination of Heavy Metal Ions Using Carbon Paste Electrode Modified with Titania Nanoparticles","authors":"Elif Tüzün,&nbsp;Gülten Atun","doi":"10.1007/s12678-023-00824-z","DOIUrl":"10.1007/s12678-023-00824-z","url":null,"abstract":"<div><p>In the development of ultrasensitive and selective sensors for heavy metal ions, the fabrication of titania-modified carbon paste electrodes with electrochemical sensing capabilities has received considerable attention. In this study, we investigated the facile preparation of the titania-modified carbon paste electrode and the determination of trace amounts of hazardous Hg(II), Cu(II), and Pb(II) ions by applying the square wave anodic stripping voltammetry method. The titania nanoparticles were characterized using various techniques such as size analyzer, XRD, and FTIR to determine their chemical properties. The experimental findings demonstrated that the titania nanoparticles were uniformly distributed in the graphite used to construct the modified electrode and had an average particle size of 85 nm in crystalline anatase form. Compared with the measurement results, the prepared sensor exhibited excellent sensing performance against Hg(II), Cu(II), and Pb(II) ions with a low detection limit of 15.26, 0.56, and 1.65 nM, respectively. In ternary solutions, their simultaneous determinations showed that the electrode is more sensitive to Hg(II) and Pb(II) ions, with detection limits of 8.32 and 0.25 nM, respectively. Consequently, the experimental results showed that the titania-modified carbon paste electrode is a promising sensor for the determination of hazardous Hg(II), Cu(II) and Pb(II) ions in sensor applications.</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 4","pages":"636 - 647"},"PeriodicalIF":3.1,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00824-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4047370","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}

{"title":"Efficient MoS2/V2O5 Electrocatalyst for Enhanced Oxygen and Hydrogen Evolution Reactions","authors":"Krishna Kanta Haldar,&nbsp;Imtiaz Ahmed,&nbsp;Rathindranath Biswas,&nbsp;Shouvik Mete,&nbsp;Ranjit A. Patil,&nbsp;Yuan-Ron Ma","doi":"10.1007/s12678-023-00822-1","DOIUrl":"10.1007/s12678-023-00822-1","url":null,"abstract":"<div><p>Electrochemical (EC) water splitting is a promising approach for the generation of renewable hydrogen (H₂) fuels and oxygen (O₂) evolution. Composite structured molybdenum disulphide (MoS₂)/vanadium pentoxide (V₂O₅) with low overpotential is a promising electrocatalyst for anodic and cathodic material for an alternative energy source. We fabricated a flower shape MoS₂/V₂O₅ composite via a hydrothermal approach where V₂O₅grew on the surface of the MoS₂ petals. The unique flower-type composite structure alleviates the surface expansion of electrode material. The electrochemical studies show that the composite possesses good stability with low overpotential and smaller Tafel slope compared to its constituents. It has been found that the MoS₂/V₂O₅ composite exhibits a stable rate performance under the current density of 10 mA cm⁻² which indicates that the MoS₂/V₂O₅ composite might be a good candidate for both oxygen and hydrogen evolution reactions.\u0000</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 4","pages":"624 - 635"},"PeriodicalIF":3.1,"publicationDate":"2023-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5102249","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}

{"title":"Au Cluster-derived Electrocatalysts for CO2 Reduction","authors":"Shailendra Kumar Sharma,&nbsp;Hani Taleshi Ahangari,&nbsp;Bernt Johannessen,&nbsp;Vladimir B. Golovko,&nbsp;Aaron T. Marshall","doi":"10.1007/s12678-023-00821-2","DOIUrl":"10.1007/s12678-023-00821-2","url":null,"abstract":"<div><p>Metal clusters often exhibit superior chemical, electronic, and geometrical properties and can show exciting catalytic performance. The catalytic behaviour of the clusters is strongly affected by their size and composition, offering unique opportunities to fine-tune such materials for a specific application. In this study, atomically precise [Au₆(dppp)₄](NO₃)₂, [Au₉(PPh₃)₈](NO₃)₃, [Au₁₃(dppe)₅Cl₂]Cl₃ and Au₁₀₁(PPPh₃)₂₁Cl₅ clusters were synthesised, characterised and their activity for electrocatalytic CO₂ reduction is compared. These Au clusters were deposited onto carbon paper to serve as the cathode for the electrochemical reduction of CO₂. The experimental studies suggest that the clusters remain intact upon deposition on the carbon paper but undergo agglomeration during CO₂ electrolysis. The cluster-based catalysts demonstrated high selectivity (75%—90%) for CO production over hydrogen evolution reaction. Upon calcination, the activity of the cluster-based electrodes decreases, which can be attributed to the agglomeration of small clusters into larger bulk-like nanoparticles, as suggested by XPS, XAS and SEM.\u0000</p><h3>Graphical Abstract</h3><p>A series of phosphine-protected gold clusters supported on carbon paper were studied as CO₂RR electrocatalysts. The CO₂RR activity was dependent on their size and ligand density. Thermal annealing of the catalysts invariably lowered CO selectivity due to agglomeration of the clusters into larger nanoparticles. \u0000</p><figure><div><div><div><picture><source><img></source></picture></div></div></div></figure></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"611 - 623"},"PeriodicalIF":3.1,"publicationDate":"2023-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4810874","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}

{"title":"Proton Relay Mediated Electrocatalytic Hydrogen Evolution by an Economic Co(III) Complex","authors":"D. Majumder,&nbsp;S. Kolay,&nbsp;V. S. Tripathi","doi":"10.1007/s12678-023-00823-0","DOIUrl":"10.1007/s12678-023-00823-0","url":null,"abstract":"<div><p>Bis(iminidiacetato)cobaltate(III) complex has been evaluated for electrocatalytic proton reduction. The process follows a rare pathway of protonation of ligand upon addition of a weak acid in DMF/water (9:1 v/v) medium. Thus, the complex becomes electroactive only in the presence of acid. In the presence of weak acid, a new reduction peak corresponding to Co^I/Co⁰ reduction is observed. The electrocatalytic activity towards proton reduction reaction is exhibited by this peak. An electrochemical-chemical-electrochemical (ECE) route initiated by proton relay on ligand site has been established for the electrocatalytic process. The catalytic activity of the complex in DMF/water medium was evaluated by controlled potential electrolysis, turnover number (TON), and turnover frequency (TOF).</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 4","pages":"602 - 610"},"PeriodicalIF":3.1,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00823-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"5037051","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}

{"title":"A Reagentless Aptamer Sensor Based on a Self-Powered DNA Machine for Electrochemical Detection of AFB1","authors":"Guobing Wei,&nbsp;Qiqi Fan,&nbsp;Nian Hong,&nbsp;Hanfeng Cui,&nbsp;Wenxing Zhang,&nbsp;Mijit Rustam,&nbsp;Alxir Alim,&nbsp;Tao Jiang,&nbsp;Huanhuan Dong,&nbsp;Hao Fan","doi":"10.1007/s12678-023-00819-w","DOIUrl":"10.1007/s12678-023-00819-w","url":null,"abstract":"<p>A reagentless electrochemical aptamer sensor for AFB1 detection was constructed based on DNAzyme-driven DNA walker and bisferrocene. No significant change in electrochemical signal was observed when the target AFB1 was not added. The electrochemical signal was significantly reduced when the target AFB1 was added.</p>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"593 - 601"},"PeriodicalIF":3.1,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4001407","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}

{"title":"Enhanced Photoelectrocatalytic Performance Using Chalcogenide Te/TiO2/Ti Nanotube Array Based on COD Analyses for Water Treatment Applications","authors":"Muhammad Nurdin,&nbsp;Ilham Ilham,&nbsp;Maulidiyah Maulidiyah,&nbsp;Muh. Zakir Muzakkar,&nbsp;Dwiprayogo Wibowo,&nbsp;Zul Arham,&nbsp;La Ode Agus Salim,&nbsp;Irwan Irwan,&nbsp;Catherina Bijang,&nbsp;Akrajas Ali Umar","doi":"10.1007/s12678-023-00820-3","DOIUrl":"10.1007/s12678-023-00820-3","url":null,"abstract":"<div><p>The effect of Te doping of the TiO₂/Ti nanotube arrays (NTAs) on the photoelectrochemical chemical oxygen demand (COD) detection has been investigated. It is found that the Te doping has enhanced the photoelectrocatalytic properties of the TiO₂/Ti NTAs electrode. This indicated by the linearity, accuracy, and repeatability of measurement of the test compounds chemicals. The Te-TiO₂/Ti NTAs shows an excellent linearity to all test compounds up to 10 μM of concentration. It is only up to 5 μM in pristine TiO₂/Ti NTAs system. In term of accuracy, the Te-TiO₂/Ti NTAs electrode can provide the measurement accuracy of up to 100% fit to the theoretical value for all test compound chemical. It is only less than 80% for TiO₂/Ti NTAs electrode. Meanwhile, the repeatability of measurement for the electrode, the Te-TiO₂/Ti NTAs exhibits 1.8% RSD value, which is lower than the pristine TiO₂/Ti NTAs, i.e., 2%. The enhancement of the photoelectrocatalytic properties of the TiO₂ by Te doping is due to the lowering of electron and hole recombination during the photoactivation, promoting massive surface reaction with organic compounds and improving the sensing sensitivity. The Te-TiO₂/Ti NTAs should find the extensive application of PECOD detection of organic contamination in the environment.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"581 - 592"},"PeriodicalIF":3.1,"publicationDate":"2023-03-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00820-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4655430","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}

{"title":"Chemometric Investigation of Platinum Electrodeposition on Titanium Substrates for Ethanol Electro-oxidation","authors":"João Paulo Tenório da Silva Santos,&nbsp;Sherlan Guimarães Lemos,&nbsp;Murilo Fernando Gromboni,&nbsp;Vinicius Del Colle,&nbsp;Artur José Santos Mascarenhas,&nbsp;Valéria Cristina Fernandes","doi":"10.1007/s12678-023-00817-y","DOIUrl":"10.1007/s12678-023-00817-y","url":null,"abstract":"<div><p>The objective of this work is to employ chemometric tools to investigate the influence of the synthesis parameters in platinum electrodeposition on a titanium substrate using cyclic voltammetry. Through a 2² factorial design, using as response the maximum peak current density during the ethanol electro-oxidation, one can observe that the number of cycles and the scan rate are both significant, but the interaction between them is not. The maximum peak current density is observed for the electrode obtained with NC = 20 cycles and SR = 200 mV s⁻¹. The structural characterization indicates that the surface irregularity of the substrate causes an uneven growth of the (200) and (220) crystallographic planes, which present different performances in the electro-oxidation of ethanol. The response surface methodology indicates that the best experimental condition is that obtained with 10 cycles and 218 mV s⁻¹. The Pt/Ti electrodes prepared with the optimized parameters are promising.\u0000</p><h3>Graphical Abstract</h3>\u0000 <figure><div><div><div><picture><source><img></source></picture></div></div></div></figure>\u0000 <p>A 2² factorial design was applied to prepare Pt/Ti for ethanol eletro-oxidation. Pt electrodeposits have shown an atypical “house of cards” morphology. Preferential orientation of Pt on Ti surface are related to better activity. Response surface methodology points 10 cycles at 218 mV s⁻¹ as the best condition.</p></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"570 - 580"},"PeriodicalIF":3.1,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4430867","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}

{"title":"Formic Acid Electrooxidation on Palladium Nano-Layers Deposited onto Pt(111): Investigation of the Substrate Effect","authors":"Vanessa L. Oliveira,&nbsp;Yvonne Soldo-Olivier,&nbsp;Edson A. Ticianelli,&nbsp;Marian Chatenet,&nbsp;Eric Sibert","doi":"10.1007/s12678-023-00816-z","DOIUrl":"10.1007/s12678-023-00816-z","url":null,"abstract":"<div><p>The influence of Pd nano-layers electro-deposited onto Pt(111) single crystal has been systematically studied toward the formic acid electrochemical oxidation reaction in H₂SO₄ and HClO₄. The studied Pd_xML/Pt(111) surfaces (<i>x</i> = 1, 2, 5, and 16 monolayers (ML)) are all more active than Pt(111) toward formic acid oxidation, even if the activity is very sensitive to the Pd film thickness and morphology. In sulfate solution, the competitive adsorption of long-range ordered (bi)sulfate on the pseudomorphic Pd terraces effectively hinders the formic acid oxidation only on the thinnest films. We could observe the different roles of the (bi)sulfate adsorption on the first and on the following deposited Pd layers. The sulfate adsorption competitive role rapidly fades away beyond about 5 ML of equivalent thickness, due to the surface roughness increasing and terraces width diminishing. In perchlorate media, anions do not adsorb competitively with formic acid intermediates, allowing a larger activity of the formic acid oxidation up to about 5 ML. At higher thicknesses, the difference in activity between the two electrolytic media is reduced, and it drops in both electrolytes close to 0.5 V vs. RHE, where Pd surface oxides are formed. Coupling the electrochemical results with the Pd layer structural description previously obtained from in situ SXRD experiments, the outstanding activity of Pd_1ML/Pt(111) observed in perchloric solution can be explained by the ligand effect of the underlying platinum atoms on the first pseudomorphic Pd layer. This advantageous effect is lost for Pd deposits thicker than 1 ML.</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 4","pages":"561 - 569"},"PeriodicalIF":3.1,"publicationDate":"2023-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00816-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4174076","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}

{"title":"Preparation of Nitrate Bilayer Membrane Ion-Selective Electrode Modified by Pericarpium Granati-Derived Biochar and Its Application in Practical Samples","authors":"Fozia,&nbsp;Guangyao Zhao,&nbsp;Yanhong Nie,&nbsp;Jianrong Jiang,&nbsp;Qian Chen,&nbsp;Chaogang Wang,&nbsp;Xu Xu,&nbsp;Ming Ying,&nbsp;Zhangli Hu,&nbsp;Hong Xu","doi":"10.1007/s12678-023-00812-3","DOIUrl":"10.1007/s12678-023-00812-3","url":null,"abstract":"<div><h2>Abstract\u0000</h2><div><p>In this study, a <i>pericarpium granati</i>-derived biochar with phosphoric acid activation (PGCP) was prepared, characterized, and applied together with polypyrrole (PPy) to modify a glass carbon electrode (GCE) to construct a bilayer membrane nitrate ion-selective electrode (ISE, PPy/PGCP/GCE). The morphological results showed that PGCP possessed a porous structures. X-ray photoelectron spectroscopy analysis indicated that phosphorus added in PGCP was in the forms of P-O and P–C. The electrochemical impedance spectrum of the fabricated nitrate ISE showed a very low impedance, suggesting that PGCP can be used as an effective electron transfer mediator. The open circuit potential experiments indicated that the fabricated nitrate ISE exhibited a good linear potentiometric response to nitrate over a wide concentration range of 1 × 10⁻⁵ to 5 × 10⁻¹ mol·L⁻¹ with Nernstian slope of 50.86 mV·dec⁻¹ at pH range of 3.5–9.5 and a short response time of less than 7.3 s. Its limit of detection (LOD) was determined to be 4.64 × 10⁻⁶ mol·L⁻¹. Both detection range and LOD are comparable or better than those of reported similar modified electrodes. The fabricated nitrate ISE exhibited a high selectivity with a good repeatability and stability. The selectivity sequence was determined as NO₃⁻  &gt; NO₂⁻  &gt; Cl⁻  &gt; H₂PO₄⁻  &gt; CH₃COO⁻  &gt; CO₃²⁻  &gt; SO₄²⁻. The fabricated nitrate ISE was validated by the nitrate detections of real samples from Shenzhen OCT wetland and laboratory wastewater, respectively, with the obtained detection discrepancy of less than 4% (RSD). This study provides useful reference information for the development of novel ISE in clinical laboratories and environmental monitoring.</p></div></div>","PeriodicalId":535,"journal":{"name":"Electrocatalysis","volume":"14 4","pages":"534 - 545"},"PeriodicalIF":3.1,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s12678-023-00812-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4934489","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}