Materials Chemistry and Physics最新文献

{"title":"Crystalline structure and electrical performance of Bi2O3-modified 0.95BaTiO3-0.5Sr(Al0.5Ta0.5)O3 ceramics","authors":"Jiale Wei ,&nbsp;Dan Xu ,&nbsp;Fujia Ben ,&nbsp;Taolin Yu ,&nbsp;Xinyuan Zhou ,&nbsp;Wenping Cao ,&nbsp;Wenjie Zhao","doi":"10.1016/j.matchemphys.2025.131357","DOIUrl":"10.1016/j.matchemphys.2025.131357","url":null,"abstract":"<div><div>To solve the poor sintering behavior of 0.95BaTiO₃-0.05Sr(Al_0.5Ta_0.5)O₃ (BT-SAT) sample, in this paper, various weight ratios of Bi₂O₃ powder is used as a sintering aid and dopant to construct the BT-SAT + <em>x</em>wt%Bi₂O₃(BT-SAT + <em>x</em>%Bi, <em>x</em> = 0, 0.5, 1, 2, and 3) ceramic system. The impacts of Bi₂O₃ concentration on the ceramic density, crystalline structure, and electrical properties of BT-SAT samples were investigated and discussed. In contrast to the undoped sample, the addition of Bi₂O₃ can dramatically improve the ceramic density and electrical performance of BT-SAT samples. The BT-SAT + <em>x</em>%Bi samples display a tetragonal and cubic double-phase coexistence feature, which has been confirmed by the X-ray diffraction (XRD), Raman, and Rietveld refinement results. The substitution-site of Bi cations is dependent on the doping level. For lower doping content, Bi cation tends to replace A-sites, leading to a lattice shrinkage, while it will also replace B-sites to regulate charge balance and lattice deformation in heavily doped samples, thereby enhancing the dynamic response of oxygen octahedron and optimizing the dielectric properties by defect engineering. In addition, the enhanced dielectric relaxation of the ceramic sample is realized by the formation of local ordered fields due to the presence of defect dipoles, giving rise to the thin and tilted ferroelectric <em>P-E</em> loops, thereby significantly improving the energy storage efficiency of the BT-SAT + <em>x</em>%Bi ceramics.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131357"},"PeriodicalIF":4.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711305","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}

{"title":"Low-variability, high-endurance memristive behavior in Tungsten-functionalized GO Based Cu doped NiO nanocomposites for next-generation memory devices","authors":"B.V. Solanke ,&nbsp;N.D. Raskar ,&nbsp;D.V. Dake ,&nbsp;V.A. Mane ,&nbsp;R.B. Sonpir ,&nbsp;G.D. Raylkar ,&nbsp;K.M. Chavan ,&nbsp;S.S. Munde ,&nbsp;P.R. Kayande ,&nbsp;B.N. Dole","doi":"10.1016/j.matchemphys.2025.131352","DOIUrl":"10.1016/j.matchemphys.2025.131352","url":null,"abstract":"<div><div>A tungsten-functionalized graphene oxide-based Cu-doped NiO (GCNO) nanocomposite was synthesized via a hydrothermal method and evaluated for memristor applications. The GCNO exhibited a high surface area of 249.04 m²/g and mesoporosity (∼0.498 cc/g), enabling efficient ion transport and redox activity. Structural tuning led to a reduced crystallite size of 12.04 nm and enhanced microstrain (0.93 %), promoting high oxygen vacancy concentration for stable switching. Electrical testing revealed a symmetric, pinched I–V hysteresis loop with a stable and measurable ON/OFF ratio, low resistance (0.109 μΩ), and dual conduction mechanisms: Schottky emission at low bias and filamentary switching at high bias. The device demonstrated excellent endurance, stable retention over 500's, and low variability between high and low resistance states across cycles. These results establish GCNO as a robust candidate for next-generation non-volatile memory and neuromorphic computing.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131352"},"PeriodicalIF":4.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714202","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}

{"title":"Nitrogen-doped nanotube production using hematite-quartz-nickel as catalysts and their application in hydrogen generation","authors":"Francisco Javier Sánchez-Blanco ,&nbsp;Xiuyu Wu ,&nbsp;Eduardo Gracia-Espino ,&nbsp;Florentino López-Urías ,&nbsp;Emilio Muñoz-Sandoval","doi":"10.1016/j.matchemphys.2025.131347","DOIUrl":"10.1016/j.matchemphys.2025.131347","url":null,"abstract":"<div><div>Nitrogen-doped multiwalled carbon nanotubes (N-MWCNTs) were synthesized via aerosol-assisted catalytic chemical vapor deposition (AAC-CVD) using earth-abundant catalysts composed of hematite, quartz, and varying amounts of nickel. The effects of nickel concentration and synthesis temperature (750–950 °C) were systematically evaluated to optimize the structural, morphological, and electrochemical properties of the resulting nanomaterials. The CT2-Ni catalyst (9 wt % Ni) demonstrated the highest production efficiency, reaching ∼280 %, and promoted the growth of thin entangled nanotubes with average diameters as low as 35.5 nm. Raman spectroscopy revealed significant structural disorder at lower temperatures (I_D/I_G = 0.93 for CT1-750), which correlated with enhanced catalytic activity. Electrochemical measurements showed that N-MWCNTs synthesized at 750 °C delivered high current densities of &gt;100 mA cm⁻² at −0.6 V vs. RHE, supported by favorable electrochemical parameters such as low charge-transfer resistance (22.9 Ω) and high double-layer capacitance (5.25 mF cm⁻²). These results highlight the synergistic effect between Ni doping and defect engineering in optimizing the HER activity. The materials developed in this study offer a scalable and cost-effective alternative to noble-metal-based catalysts, bridging the gap between fundamental research and industrial hydrogen production. This study confirms that a strategic catalyst design using common oxides can drive sustainable energy solutions.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131347"},"PeriodicalIF":4.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713424","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}

{"title":"A novel ethylenediamine-bridged cobalt (II) phthalocyanine decorated MWCNT for advanced electrochemical sensing of acetaminophen","authors":"Anjali Jaison ,&nbsp;Harish Makri Nimbegondi Kotresh ,&nbsp;Abdul Ajees Abdul Salam ,&nbsp;Vishnu Sharma Atikukke ,&nbsp;Fasiulla Khan ,&nbsp;Mruthyunjayachari Chattanahalli Devendrachari ,&nbsp;Sarvajith Malali Sudhakara","doi":"10.1016/j.matchemphys.2025.131342","DOIUrl":"10.1016/j.matchemphys.2025.131342","url":null,"abstract":"<div><div>The design and synthesis of effective molecular catalysts are essential for the efficient electrochemical sensing of pollutants. Due to their adjustable peripheral site, cobalt phthalocyanines (CoPc) are well-known electrochemical sensors for various organic, inorganic, and biomolecular analytes. In this study, multi-walled carbon nanotubes (MWCNT) were anchored onto ethylenediamine-bridged cobalt (II) phthalocyanine (EACoPc) to form EACoPc-MWCNT in three different ratios (1:1, 1:2, and 1:5 for EACoPc and MWCNT taken). The redox-active Cobalt metal in the central cavity of the highly conjugated phthalocyanine complex and the large surface area of MWCNT facilitate the electrochemical detection of analytes in water. The structural, physical, and morphological properties of the newly developed composites were investigated using various analytical techniques. The three composites were then drop-cast onto a glassy carbon electrode (GCE) to detect acetaminophen (AC) using cyclic voltammetry (CV) and Differential Pulse Voltammetry (DPV). Among the three composites, the EACoPc-MWCNT 1:2-modified GCE was found to have the highest activity toward the AC over a linear concentration range of 10–100 μM, with a detection limit of 2.14 μM using phosphate buffer as an electrolyte. From chronoamperometric analysis, the response time of the modified electrode was found to be 3 s for 25 μM of AC. The developed electrode depicted remarkable stability and reproducibility. Under optimum conditions, the modified sensor could recognise AC from other interferents. The practical applicability of the analytically modified sensor was analyzed in real water samples using the spiking method and showed impressive recovery rates of &gt;97 %.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131342"},"PeriodicalIF":4.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702554","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}

{"title":"Double resolving sets and the exchange property with applications in network optimization and cybersecurity","authors":"Sikander Ali ,&nbsp;Muhammad Kamran Jamil ,&nbsp;Muhammad Azeem ,&nbsp;Manzoor Ahmad Zahid ,&nbsp;Tamer Ahmed Ismail","doi":"10.1016/j.matchemphys.2025.131289","DOIUrl":"10.1016/j.matchemphys.2025.131289","url":null,"abstract":"<div><div>In the article, we discussed the double resolving sets and exchange property for the octagonal nanosheet structure. We examine the theoretical foundations and practical optimization of double resolving sets in the context of network redundancy and monitoring. A particular focus is placed on the exchange property, which is key in enhancing the flexibility and adaptability of resolving sets under dynamic network conditions. Suppose <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> are subsets of the vertices of the graph and both have unique identification from all the vertices of the graph. Let <span><math><mi>u</mi></math></span> and <span><math><mi>v</mi></math></span> are two vertices such that <span><math><mrow><mi>v</mi><mo>∈</mo><msub><mrow><mi>W</mi></mrow><mrow><mn>1</mn></mrow></msub></mrow></math></span> and <span><math><mrow><mi>u</mi><mo>∈</mo><msub><mrow><mi>W</mi></mrow><mrow><mn>2</mn></mrow></msub><mo>.</mo></mrow></math></span> It is assumed that <span><math><mrow><mrow><mo>(</mo><msub><mrow><mi>W</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>∖</mo><mi>v</mi><mo>)</mo></mrow><mo>∪</mo><mi>u</mi><mo>=</mo><msub><mrow><mi>W</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span> then we can say that exchange property is hold. The concept of a double resolving set ensures that every vertex in a graph can be uniquely identified using two independent resolving sets, providing the exchange property in cases where one vertex becomes ineffective. By applying sophisticated mathematical methods, we determine dual resolving sets that offer the best vertex identification and distance resolution in carbon nanosheets. These sets are essential for use in electronic devices and sensors, for example, where exact control over the characteristics of nanosheets is required. We also investigate the increased exchange qualities, which are these sets’ resilience to external shocks and their capacity to continue addressing problems even when flaws or alterations are present. Suppose <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> and <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> resolving sets and <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>1</mn></mrow></msub></math></span> <span><math><mo>≠</mo></math></span> <span><math><msub><mrow><mi>W</mi></mrow><mrow><mn>2</mn></mrow></msub></math></span> then <span><math><mi>G</mi></math></span> has double resolving set.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131289"},"PeriodicalIF":4.3,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713423","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}

{"title":"Facile preparation of regenerative environmentally responsive sodium alginate aerogel and its efficient adsorption toward copper ions","authors":"Shizhen Zhao,&nbsp;Danyang Li,&nbsp;Yuanpeng Cai,&nbsp;Ziji Song,&nbsp;Hui Liu","doi":"10.1016/j.matchemphys.2025.131340","DOIUrl":"10.1016/j.matchemphys.2025.131340","url":null,"abstract":"<div><div>There was an urgent need to develop facile and efficient treatment technologies to remove copper ion (Cu²⁺) from wastewater resources. In order to overcome the technical bottleneck in desorption and regeneration of adsorbents, a composite aerogel of sodium p-styrenesulfonate (SSS), N-isopropylacrylamide (NIPAM), and sodium alginate (SA) (denoted as SA/P(NIPAM-co-SSS)) was prepared in a simplified manner, and it demonstrated excellent pH- and temperature-responsive properties. The resulting aerogel was systematically analyzed by a series of characterization methods, and its adsorption performance toward Cu²⁺ was detailedly investigated. The experimental results demonstrated that adsorption capacity of aerogel could reach 142.85 mg/g when molar ratio of NIPAM/SSS was 1:5. The adsorption behaviors could be well fitted by pseudo-second-order kinetic equation and Langmuir model, indicating the interaction between SA/P(NIPAM-co-SSS) and Cu²⁺ could be attributed to coordination, electrostatic interactions, and ion-pair formation. Even after five adsorption-desorption cycles at pH = 2 and 40 °C, adsorption capacity of SA/P(NIPAM-co-SSS) could maintain more than 85 % of initial adsorption capacity, implying excellent regeneration performance owing to its environmental responsiveness. Based on the unique environmentally responsive characteristics and superior regeneration ability, SA/P(NIPAM-co-SSS) could be expected to play a crucial role in the field of environmental treatment, especially in efficient removal of Cu²⁺.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131340"},"PeriodicalIF":4.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702550","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}

{"title":"Soft-magnetic properties of wire-arc additively manufactured Fe–49Co–2V alloy improved through post-deposition heat treatment","authors":"Soumyajit Koley ,&nbsp;John Wilson ,&nbsp;Supriyo Ganguly","doi":"10.1016/j.matchemphys.2025.131350","DOIUrl":"10.1016/j.matchemphys.2025.131350","url":null,"abstract":"<div><div>A wire-arc additive manufacturing (WAAM) process was adopted to prepare Fe–49Co–2V alloy. A commercial plasma-transferred arc (PTA) welding torch coupled with a computer numerically controlled (CNC) locomotor was used to deposit the alloy in the form of a simple wall. The soft-magnetic properties of the deposited alloy were evaluated by measuring the variation of magnetisation versus applied field strength. The as-deposited alloy was also heat-treated at various temperatures to improve different magnetic properties, such as saturation magnetisation, remanence, coercivity and energy/power loss. It was found that an annealing treatment at 1000 °C for 4 h improves coercivity, magnetic remanence, and power loss by decreasing them by 61 %, 50.5 %, and 38.5 %, respectively, from the as-deposited condition. A correlation was also established between microstructure and magnetic properties. It was observed that the alloys, both as-deposited and heat-treated, do not follow Soumail's model established between coercivity and grain size. It has been shown that the presence of Type II residual stress in the lattice, as well as small particles of vanadium oxide scattered across the matrix, is the reason for such discrepancy.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131350"},"PeriodicalIF":4.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713394","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}

{"title":"Dual-salt synergistic activation of hierarchical porous carbons derived from cellulose-chitosan biomass for high-performance supercapacitors","authors":"Yingjing Xia ,&nbsp;Yuanyuan Wang ,&nbsp;Xingshen Dong ,&nbsp;Peng Qiao ,&nbsp;Wenyi Wang ,&nbsp;Ruixia Niu","doi":"10.1016/j.matchemphys.2025.131351","DOIUrl":"10.1016/j.matchemphys.2025.131351","url":null,"abstract":"<div><div>The combustion of fossil fuels has triggered a series of environmental, climatic, and resource-related issues, while the intermittency of renewable energy sources constrains the development of clean energy. In this study, a series of porous carbon materials (CSHPC-<em>x</em>-T) were successfully prepared using a mixed-salt (potassium citrate and sodium bicarbonate) activation approach, with hydroxypropyl cellulose and chitosan serving as mixed biomass carbon sources. By precisely adjusting the activator ratio, the pore structure of the materials was finely tuned. Among them, CSHPC-2-700 exhibited the best electrochemical performance. In a three-electrode system, CSHPC-2-700 demonstrated a high specific capacitance of 392.9 F g⁻¹, significantly surpassing those (K-CSHPC-2-700 and N-CSHPC-2-700) prepared via single-salt activation, and exhibited excellent rate capability (261.6 F g⁻¹ at 50 A g⁻¹ and 204.4 F g⁻¹ at 100 A g⁻¹). In a two-electrode configuration, the symmetric supercapacitor based on CSHPC-2-700 displayed an ultra-long cycle life in 6 M KOH electrolyte, retaining 90.77 % initial capacitance after 30,000 consecutive charge-discharge cycles at 10 A g⁻¹. These outstanding performances indicate the great potential of CSHPC-2-700 as a high-performance electrode material for supercapacitors.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131351"},"PeriodicalIF":4.3,"publicationDate":"2025-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702553","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}

{"title":"Sustainable synthesis of MgO NSs using natural products for enriching structural, optical, magnetic & hyperthermic response and their impact against microbes & breast cancer cells","authors":"Himani Bhoi ,&nbsp;Sudeep Tiwari ,&nbsp;Manisha ,&nbsp;Vivek K. Salvi ,&nbsp;Papori Seal ,&nbsp;Shrey K. Modi ,&nbsp;Ganesh Lal ,&nbsp;Priya L. Mange ,&nbsp;Vinod Saharan ,&nbsp;Jyoti Prasad Borah ,&nbsp;Shiv K. Barbar ,&nbsp;Kunal B. Modi ,&nbsp;Sudhish Kumar","doi":"10.1016/j.matchemphys.2025.131332","DOIUrl":"10.1016/j.matchemphys.2025.131332","url":null,"abstract":"<div><div>In this research, MgO nanostructures (NSs) have been synthesized via green self-combustion reactions using natural products as reducing, capping &amp; stabilizing agents. Thermal gravimetric analysis, Powder X-ray diffraction, High resolution Transmission electron microscopy, Selected area Electron diffraction, Energy dispersive X-ray and Fourier transform infrared spectroscopic analysis confirmed phase pure fcc structure of MgO NSs with fuel dependent mean size of nanoparticles, as 19, 16, 16, 96 &amp; 10 nm for lemon juice, sugarcane + lemon juice, lemon juice + ammonia, aloe-vera juice and citric acid, respectively. Notably, formation of oxygen vacancies, Mg vacancies and generation of reactive oxygen species in MgO NSs have been divulged by diffuse reflectance, Photoluminescence and Electron spin resonance spectroscopic analysis. These MgO NSs demonstrated maximum change in reflectance over the UV &amp; Blue color bands and fuel dependent band gap energies in the 2.75–3.87 eV range. MgO NSs showed up significant suppression of bacteria and fungi as their MIC against <em>Staphylococcus aureus</em>, Streptococcus pyogenus, <em>Escherichia coli</em> &amp; <em>Pseudomonas aeruginosa</em> and Candida albicans, Aspergillus niger &amp; Aspergillus clavatus are comparable to Ampicillin, Chloramphenicol and Greseofulvin. Further, MgO: LA NSs prepared with lemon juice demonstrated coexistence of soft ferrimagnetism and superparamagnetism at 300 K with M_s = ∼ 0.635 emu/g and significant heat generation efficiency (∼ 198.3 W/g), which is suited for mild hyperthermia therapeutics. MgO: LA NSs exhibited good cytotoxic response against MCF-7 breast cancer cells. These greenly produced MgO NSs could be useful for biomedical applications, water purification and food preserving by inactivation of bacterial growth along with other technological applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131332"},"PeriodicalIF":4.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144713419","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}

{"title":"Eco-friendly preparation of K+-doped HKUST-1 metal organic framework for adsorptive collection of CO2 or volatile organic vapors","authors":"Sachin Kuchekar ,&nbsp;Sanjit Gaikwad ,&nbsp;Sung Gu Kang ,&nbsp;Sangil Han","doi":"10.1016/j.matchemphys.2025.131343","DOIUrl":"10.1016/j.matchemphys.2025.131343","url":null,"abstract":"<div><div>This study aims to develop a one-pot, eco-friendly synthesis of K-HKUST-1 via ultrasonication and compare its performance with various non-conventional methods. K-HKUST-1 synthesized by ultrasonication in 30 min exhibited the highest CO₂ adsorption capacity (6.19 mmol/g) and CO₂/N₂ selectivity (24.92), consistent with its highest surface area and pore volume compared to the K-HKUST-1 synthesized by conventional methods. K-HKUST-1 retained its CO₂ adsorption capacity (5.17 mmol/g) after exposure to a humid environment for 20 days, which is significantly higher than the parent HKUST-1 (1.27 mmol/g). The SEM-EDS analysis and density functional theory (DFT) calculations revealed that successful K⁺ doping into the HKUST-1 framework increases CO₂ adsorption capacity, attributed to additional adsorption sites created by K⁺ doping. Notably, this study is the first to demonstrate alkali metal doping directly into the MOF framework using an eco-friendly approach, instead of traditional solvothermal methods or post-synthetic modifications, representing a major advancement in the field. Furthermore, the optimum K-HKUST-1 sample was evaluated for acetone, benzene, toluene, and p-xylene adsorption, showing capacity increases of 21 % for acetone, 38 % for benzene, 45 % for toluene, and 27 % for p-xylene compared to the parent HKUST-1 making it a promising candidate for carbon capture and VOCs removal applications.</div></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":"346 ","pages":"Article 131343"},"PeriodicalIF":4.3,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144694600","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}