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Recent advances in MXene-based materials for zinc-ion batteries 锌离子电池用mxene基材料的研究进展
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-10 DOI: 10.1016/j.flatc.2025.100940
Yifei Wang , Yue Shi , Yuanyuan Yang , Ziyi Cheng , Hengbo Jia , Yaning Zhou , Le Li
{"title":"Recent advances in MXene-based materials for zinc-ion batteries","authors":"Yifei Wang ,&nbsp;Yue Shi ,&nbsp;Yuanyuan Yang ,&nbsp;Ziyi Cheng ,&nbsp;Hengbo Jia ,&nbsp;Yaning Zhou ,&nbsp;Le Li","doi":"10.1016/j.flatc.2025.100940","DOIUrl":"10.1016/j.flatc.2025.100940","url":null,"abstract":"<div><div>Zinc-ion batteries (ZIBs), emerging as a novel power source, boast benefits like enhanced security, affordability, and eco-friendliness. The real-world use of ZIBs faces obstacles because of the narrow electrochemical stability range, the disintegration of active electrode substances, and inadequate growth and lifespan of zinc dendrites. Owing to their unique structural characteristics as well as physical and chemical properties, including excellent electrical conductivity, adjustable interlayer spaces, low-energy barriers, rich-surface functional groups (e.g., <img>OH, <img>O, <img>Cl, and <img>F), and ample chemical compositions, MXenes-based materials can solve the above-mentioned problems of ZIBs. The paper examines the latest advancements in research on MXenes-based substances (zero dimension, one dimension, two dimension, and three dimension) in ZIBs applications, including MXene-based materials anodes, cathodes, electrolyte, separator and current collectors. Furthermore, an in-depth exploration of the structural design and reaction processes of MXene-based substances in ZIBs is conducted. Lastly, a concise discussion is presented on the current difficulties and viewpoints regarding MXene-based substances for ZIBs.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"54 ","pages":"Article 100940"},"PeriodicalIF":6.2,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Thickness- tuned band engineering for efficient photodetection in 2D CuInP2Se6 二维CuInP2Se6中高效光电探测的厚度调谐带工程
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-06 DOI: 10.1016/j.flatc.2025.100930
Amutha Subramani , Borna Radatović , Jan Luxa , Filipa M. Oliveira , Kalyan Jyoti Sarkar , Chenrayan Senthil , Stefanos Mourdikoudis , David Sedmidubsky , Zdeněk Sofer
{"title":"Thickness- tuned band engineering for efficient photodetection in 2D CuInP2Se6","authors":"Amutha Subramani ,&nbsp;Borna Radatović ,&nbsp;Jan Luxa ,&nbsp;Filipa M. Oliveira ,&nbsp;Kalyan Jyoti Sarkar ,&nbsp;Chenrayan Senthil ,&nbsp;Stefanos Mourdikoudis ,&nbsp;David Sedmidubsky ,&nbsp;Zdeněk Sofer","doi":"10.1016/j.flatc.2025.100930","DOIUrl":"10.1016/j.flatc.2025.100930","url":null,"abstract":"<div><div>The combination of unique narrow bandgap electronic and optical properties, along with van der Waals surfaces in 2D materials, makes this class of materials highly promising for advancing photodetectors. In this study, we employ first-principles calculations to investigate the structural, electronic, and vibrational properties of the 2D CuInP₂Se₆ van der Waals material. Theoretical studies reveal phase-dependent properties in CuInP₂Se₆, including bulk paraelectric, bulk ferroelectric, and monolayer paraelectric phases. Notably, the material exhibits a tunable electronic band structure through phase transitions and layer thickness modulation. Among the explored phases, the paraelectric monolayer demonstrates a strong second harmonic generation response while also displaying lower thermal conductivity, making it suitable for nonlinear optical applications. The theoretically predicted optical properties were validated experimentally by synthesizing CuInP₂Se₆ using multi-step solid-state and chemical vapor transport reactions. A fabricated photodevice, configured as Au/CuInP₂Se₆/SiO₂ via standard optical lithography, exhibited UV–visible photodetection with a maximum photoresponsivity at 405 nm. Similarly, a modelled photodevice with the same configuration also demonstrated photodetection, attaining a maximum photoresponsivity at 405 nm. Furthermore, encapsulating silicene is expected to further modulate the electronic band structure and enhance photodetection performance, paving the way for future advancements in integrated UV–Vis-NIR optoelectronic devices. The significant improvement in photoconductive gain in the NIR range is attributed to an efficient charge transport pathway and interfacial encapsulation.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"54 ","pages":"Article 100930"},"PeriodicalIF":6.2,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Electrochemical determination of Diuron in Brazilian crops: f-MWCNT@Chi-AgNPs nanocomposite-modified screen-printed electrode for food safety monitoring 巴西作物中Diuron的电化学测定:f-MWCNT@Chi-AgNPs纳米复合材料修饰的丝网印刷电极用于食品安全监测
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-05 DOI: 10.1016/j.flatc.2025.100929
Adriana C. da Silva , Thiago S. da Sena , Igor G.S. Oliveira , Fausto E. Bimbi Junior , Oswaldo C. Junior , Robson S. Souto , Michael M. Baruch , João P.P. Encide , Kathia M. Honorio , Marcos R.V. Lanza , Adriana E. de Carvalho , Willyam R.P. Barros
{"title":"Electrochemical determination of Diuron in Brazilian crops: f-MWCNT@Chi-AgNPs nanocomposite-modified screen-printed electrode for food safety monitoring","authors":"Adriana C. da Silva ,&nbsp;Thiago S. da Sena ,&nbsp;Igor G.S. Oliveira ,&nbsp;Fausto E. Bimbi Junior ,&nbsp;Oswaldo C. Junior ,&nbsp;Robson S. Souto ,&nbsp;Michael M. Baruch ,&nbsp;João P.P. Encide ,&nbsp;Kathia M. Honorio ,&nbsp;Marcos R.V. Lanza ,&nbsp;Adriana E. de Carvalho ,&nbsp;Willyam R.P. Barros","doi":"10.1016/j.flatc.2025.100929","DOIUrl":"10.1016/j.flatc.2025.100929","url":null,"abstract":"<div><div>In this study, an inexpensive, easy-to-make screen-printed electrochemical (SPE) sensor was developed and applied for diuron (DIU) detection in Brazilian crops. The SPE was modified with a hybrid nanocomposite, which consisted of functionalized carbon nanotubes, chitosan and silver nanoparticles (<em>f-</em>MWCNT@Chi-AgNPs). The AgNPs were obtained through a simple and rapid green synthesis using lemon leaf extract as a reducing agent. The sensor exhibits irreversible electrochemical behavior with a diffusion-controlled response. The SPE-modified sensor when applied for DIU detection, was obtained a wide linear range (0.02–50.0 μM), a low LOD (0.005 μM), and a high sensitivity. Experimental variables, such as pH and scan rate were optimized, with pH 7.0 identified as the optimal medium. The modified SPE sensor demonstrated excellent selectivity against common interferents, operational stability, and no memory effect. The DFT analysis, from the M06-2X and B3LYP functionals, and the Def2-SVP basis set, reveals that the DIU molecule is a moderate electrophile. These data suggest the SPE/<em>f-</em>MWCNT@Chi-AgNPs are both highly reactive and stable for DIU oxidation. Its practical applicability was confirmed through the analysis of real samples (orange fruit, orange juice, tangerine, sugarcane and tomato), where recovery rates between 100.09 and 110.61 % were obtained, with RSD below 4.0 %. The combination of conductive materials with porous structure and sustainable synthesis yielded an efficient analytical platform. The proposed sensor can be employed as a viable, rapid and effective alternative tool for monitoring pesticide residues in complex matrices, with strong potential for application in environmental and food quality analysis.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"54 ","pages":"Article 100929"},"PeriodicalIF":6.2,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Uniform formation of distinctive BaTiO3/PVA on TiO2 responsible for enhanced photocatalytic reduction in 4-nitrophenol 在TiO2上均匀形成独特的BaTiO3/PVA,增强了4-硝基苯酚的光催化还原
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-04 DOI: 10.1016/j.flatc.2025.100927
Nisa Nashrah , Yujun Sheng , Min Jun Kim , Young Gun Ko
{"title":"Uniform formation of distinctive BaTiO3/PVA on TiO2 responsible for enhanced photocatalytic reduction in 4-nitrophenol","authors":"Nisa Nashrah ,&nbsp;Yujun Sheng ,&nbsp;Min Jun Kim ,&nbsp;Young Gun Ko","doi":"10.1016/j.flatc.2025.100927","DOIUrl":"10.1016/j.flatc.2025.100927","url":null,"abstract":"<div><div>This study investigated the uniform deposition of BaTiO<sub>3</sub> (BTO) formed on TiO<sub>2</sub> layer to attain photocatalytic reduction of 4-nitrophenol. To this end, a two-step method consisting of plasma electrolysis in the alkaline electrolyte and spin coating in the BTO/polyvinyl alcohol (PVA) recipe where BTO appeared to be coordinated readily with PVA was proposed. Since PVA would played important roles in preventing the local agglomeration of BTO as polymeric capping agent as well as facilitating the stable attachment of BTO on porous TiO<sub>2</sub> layer as supporting platform, the BTO/PVA@TiO<sub>2</sub> catalyst would exhibit the excellent surface reactivity for catalytic reduction from 4-nitrophenol to 4-aminophenol, achieving the efficiency of 90 % in 10 min under the visible light irradiation. It is also found that the apparent rate constant of BTO/PVA@TiO<sub>2</sub> sample was higher by one-order than that of porous TiO<sub>2</sub> counterpart. This finding was attributed mainly to the improvement in photo-electrochemical behavior and charge transfer between active BTO particles and TiO<sub>2</sub>.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"54 ","pages":"Article 100927"},"PeriodicalIF":6.2,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Charge-size synergistic screening of GO/PSBMA nanofiltration membranes: for dye desalination and anti-fouling mechanism studies 氧化石墨烯/PSBMA纳滤膜的电荷尺寸协同筛选:用于染料脱盐和防污机理研究
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-03 DOI: 10.1016/j.flatc.2025.100928
Peng Kong, Zeshan Sun, Yibin Liang, Mingtai Xin, Haoxuan Zhang, Yu Song, Yanxin Wang, Jianguo Tang, Linjun Huang
{"title":"Charge-size synergistic screening of GO/PSBMA nanofiltration membranes: for dye desalination and anti-fouling mechanism studies","authors":"Peng Kong,&nbsp;Zeshan Sun,&nbsp;Yibin Liang,&nbsp;Mingtai Xin,&nbsp;Haoxuan Zhang,&nbsp;Yu Song,&nbsp;Yanxin Wang,&nbsp;Jianguo Tang,&nbsp;Linjun Huang","doi":"10.1016/j.flatc.2025.100928","DOIUrl":"10.1016/j.flatc.2025.100928","url":null,"abstract":"<div><div>A novel graphene oxide (GO)-based nanofiltration membrane was engineered to tackle the selective separation challenge of dyes and inorganic salts in salt-laden textile wastewater. Highly hydrophilic sulfobetaine methacrylate (SBMA) was covalently <em>graft</em>-polymerized onto GO surfaces to fabricate amphoteric polymer nanosheets (PSBMA@GO). Subsequent physical intercalation with pristine GO nanosheets yielded the GPM1:2 composite membrane. This strategy effectively enlarged the interlayer channels, endowing the membrane with a significantly enhanced permeability of 31.53 L·m<sup>−1</sup> h<sup>−1</sup> bar<sup>−1</sup>, markedly surpassing that of the pristine GO membrane (12.26 L·m<sup>−1</sup> h<sup>−1</sup> bar<sup>−1</sup>). The zwitterionic modification preserved the inherent negative charge of GO. The synergistic interplay between membrane surface charge regulation and precise pore size control achieved exceptional dye/salt separation selectivity. Dyes were selectively rejected via the Donnan exclusion effect, with rejection rates for Methylene Blue (MnB) and Congo Red (CR) exceeding 99.47 % and 98.7 %, respectively. Concurrently, efficient permeation of mono/divalent salt ions was facilitated (NaCl: 96.83 %; Na₂SO₄: 95.8 %). Furthermore, the zwitterionic polymer conferred exceptional anti-fouling properties, evidenced by a high flux recovery rate (FRR) of 89.15 % following bovine serum albumin (BSA) fouling. The FRR remained above 80 % even after a rigorous 10-h dynamic cycling test. This study establishes a novel paradigm for designing high-efficiency dye wastewater treatment membranes through the synergistic optimization of interfacial functionalization and structural modulation.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"54 ","pages":"Article 100928"},"PeriodicalIF":6.2,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145007647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Effect of poling in solar/visible light photocatalysis for binary dye degradation using 0.937(Bi0.5Na0.5)TiO3–0.063BaTiO3 0.937(Bi0.5Na0.5) TiO3-0.063BaTiO3光催化降解二元染料的极化效应
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-09-01 DOI: 10.1016/j.flatc.2025.100926
Abhishek Shukla, Vishal Singh Chauhan, Rahul Vaish
{"title":"Effect of poling in solar/visible light photocatalysis for binary dye degradation using 0.937(Bi0.5Na0.5)TiO3–0.063BaTiO3","authors":"Abhishek Shukla,&nbsp;Vishal Singh Chauhan,&nbsp;Rahul Vaish","doi":"10.1016/j.flatc.2025.100926","DOIUrl":"10.1016/j.flatc.2025.100926","url":null,"abstract":"<div><div>Solar light and visible light active 0.937((Bi<sub>0.5</sub>Na<sub>0.5</sub>)TiO<sub>3</sub>)–0.063(BaTiO<sub>3</sub>) (BNT-BT) was examined to investigate the effect of poling in photocatalysis for dye degradation efficacy. To verify the phase, vibrational modes, morphology, chemical composition and band gap of sample, X-ray diffraction (XRD), Raman spectroscopy and field emission scanning electron microscopy (FE-SEM), X-ray photoelectron spectroscopy (XPS) and DRS (diffuse reflectance spectroscopy) were utilized, respectively. In MB (Methylene Blue), RhB (Rhodamine B) and binary dye solution (MB + RhB; 50:50 volume) (10 mg/L) photocatalysis experiments were performed. Using poled sample, the degradation of MB dye was increased significantly to 72 % compared to unpoled sample (48 %). RhB dye degradation increased to 42 %, from 11 % in the poled sample. The poled BNT-BT sample showed enhanced dye degradation in the binary dye solution. The poled sample degraded 73 % MB and 62 % RhB individually, compared to 59 % MB, 23 % RhB in the unpoled sample. Under solar light, poled samples degraded binary dye efficiently (76 % MB, 78 % RhB individually) in 90 min. Next, poled samples were tested at initial binary dye concentrations of 10, 15, and 20 mg/L. Maximum rate constants observed at 10 mg/L (MB: 0.016, RhB: 0.0094 min<sup>−1</sup>) and minimum at 20 mg/L (MB: 0.006, RhB: 0.0016 min<sup>−1</sup>).</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"53 ","pages":"Article 100926"},"PeriodicalIF":6.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144931576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
(002)-Textured zinc metal anode with low residual stress for stable aqueous zinc batteries (002)-具有低残余应力的织构锌金属阳极,用于稳定的水性锌电池
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-08-27 DOI: 10.1016/j.flatc.2025.100925
Xinyue Zhu , Zibo Chen , Jianyu Chen , Jin Zhao
{"title":"(002)-Textured zinc metal anode with low residual stress for stable aqueous zinc batteries","authors":"Xinyue Zhu ,&nbsp;Zibo Chen ,&nbsp;Jianyu Chen ,&nbsp;Jin Zhao","doi":"10.1016/j.flatc.2025.100925","DOIUrl":"10.1016/j.flatc.2025.100925","url":null,"abstract":"<div><div>Rechargeable aqueous zinc batteries have significant promise for large-scale energy storage applications due to their low cost and high safety. However, the dendrite growth and side reactions at the zinc anode severely restrict their commercialization. While plastic deformation can be used to directly prepare (002) textured zinc anodes, but it will introduce harmful residual stresses, which have been shown to be the intrinsic to dendrite growth. In this study, we propose a simple annealing method for successfully achieving a balance between texture optimization and stresses mitigation in zinc metal anode. The low-residual-stress zinc metal anode with (002) texture prepared in this way exhibits excellent cycle stability in Zn||Zn symmetric cell (stable cycling for 2230 h at 1 mA cm<sup>−2</sup>), and significantly improves the performance of the Zn||MnO<sub>2</sub> full cell (capacity retention of ∼90.48 % after 800 cycles at 1 A g<sup>−1</sup>). This research provides an effective, simple solution for industrially preparing high-performance zinc anodes, and promotes the practical application of aqueous zinc batteries.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"53 ","pages":"Article 100925"},"PeriodicalIF":6.2,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Adsorption-based removal of organic dyes via a sustainably produced few-layered graphene: A potential method for industrial wastewater treatment 通过可持续生产的少层石墨烯吸附去除有机染料:一种潜在的工业废水处理方法
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-08-14 DOI: 10.1016/j.flatc.2025.100923
Reece M.D. Bristow , Stefan H. Bossmann , Peter J.S. Foot , Ian G. Beadham , Ayomi S. Perera
{"title":"Adsorption-based removal of organic dyes via a sustainably produced few-layered graphene: A potential method for industrial wastewater treatment","authors":"Reece M.D. Bristow ,&nbsp;Stefan H. Bossmann ,&nbsp;Peter J.S. Foot ,&nbsp;Ian G. Beadham ,&nbsp;Ayomi S. Perera","doi":"10.1016/j.flatc.2025.100923","DOIUrl":"10.1016/j.flatc.2025.100923","url":null,"abstract":"<div><div>This study discusses adsorption-based removal of six chemically distinctive organic dyes using graphene produced <em>via</em> a chamber explosion method. The method of graphene synthesis is sustainable as it produces zero waste, requires low energy and is scalable. The dye removal was investigated <em>via</em> UV–visible spectroscopy and proved to be efficient, with near-complete removal of all dyes within 10 min of adsorption by graphene. Specifically, 99 %, 100 %, 98 %, 95 %, 99 % and 100 % of removal was observed for Congo red, crystal violet, methylene blue, malachite green, indigo carmine and Rhodamine B, respectively, within 10 min. The physicochemical properties of the graphene were thoroughly characterised and it was shown to consist of few-layered forms, with high surface area despite being non-porous, and it comprised of almost 99 % carbon. The dye adsorption behaviour fitted pseudo second-order kinetics with Congo red showing the highest rate of 0.627 g/mg.min. Adsorption capacity of graphene was investigated <em>via</em> isothermal analysis using Congo red and indicated an estimated q<sub>max</sub> of 44.24 mg/g. Congo red-adsorbed graphene was regenerated by calcination, and showed a retention of 99.5 % carbon, evidencing the robustness of the graphene. Subsequent reuse of calcined graphene for further dye adsorption indicated 97 % and 100 % dye removal within 15 and 60 min, respectively, indicating potential for recyclability. There appeared to be a direct relationship between fast dye adsorption and the number of rotatable bonds within each dye that led to improved π-π stacking and electrostatic attractions. This sustainably-produced graphene could be a good contender for specialised applications in water purification against conjugated dyes or related organic contaminants, due to its fast, irreversible adsorption capability and recyclability.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"53 ","pages":"Article 100923"},"PeriodicalIF":6.2,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 sensing performance of picric acid explosive in wastewater and soil samples using disposable carbon electrodes immobilized with thiophenecarboxaldehyde and gold clusters 用噻吩甲醛和金团簇固定一次性碳电极提高苦味酸炸药在废水和土壤样品中的传感性能
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-08-12 DOI: 10.1016/j.flatc.2025.100924
Ecenur Daşdemir , Nilgün Şen , Lokman Liv
{"title":"Boosted sensing performance of picric acid explosive in wastewater and soil samples using disposable carbon electrodes immobilized with thiophenecarboxaldehyde and gold clusters","authors":"Ecenur Daşdemir ,&nbsp;Nilgün Şen ,&nbsp;Lokman Liv","doi":"10.1016/j.flatc.2025.100924","DOIUrl":"10.1016/j.flatc.2025.100924","url":null,"abstract":"<div><div>A cost-effective, easily fabricated, disposable, and highly selective electrochemical platform was fabricated for the sensitive detection of hazardous explosive picric acid in real samples. This innovative electrode was constructed by immobilizing multi-walled carbon nanotubes, gold clusters, and thiophenecarboxaldehyde onto a graphite surface. Comprehensive characterization of the manufactured sensor was carried out using cyclic voltammetry, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy techniques. The proposed electrode exhibited remarkable analytical performance, achieving a high calibration sensitivity of <span><math><mn>26.44</mn><mspace></mspace><mi>μA</mi><mo>.</mo><mi>L</mi><mo>.</mo><msup><mi>mg</mi><mrow><mo>−</mo><mn>1</mn></mrow></msup><mo>.</mo><msup><mi>cm</mi><mrow><mo>−</mo><mn>2</mn></mrow></msup></math></span>, an exceptionally low detection limit of 12 μg/L, and broad linear ranges of 25–400 μg/L and 1–16 mg/L. The fabricated electrode exhibited a 297 % increase in current compared to the bare electrode. This enhancement was attributed to mechanisms analogous to the Henry reaction and acid-base interactions. In addition, the sensor demonstrated excellent repeatability and reproducibility (relative standard deviation (RSD) &lt;5 %) along with impressive stability, maintaining 97.3 % of its signal after seven days. To ensure accuracy, the proposed method was validated using Elements in Soil (UME EnvCRM 03) and Elements in Wastewater (UME CRM 1204) certified reference materials, yielding recovery rates between 96.88 % and 103.56 % and RSD values lower than 4.50 %. These results confirm the high reliability and accuracy of the developed sensor and the analytical method.</div></div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"53 ","pages":"Article 100924"},"PeriodicalIF":6.2,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144863734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
CuS/CoS heterojunction with enhanced redox kinetics via electrodeposition for high-performance supercapacitors 高性能超级电容器的cu /CoS异质结电沉积增强氧化还原动力学
IF 6.2 3区 材料科学
FlatChem Pub Date : 2025-08-09 DOI: 10.1016/j.flatc.2025.100921
Pengcheng Zhang, Yajun Ji, Bin Zhang, Shixiong Zhang, Shulei Wang, Peng Zhou
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