Next Materials最新文献

{"title":"Electrochemical activation of MnS as an efficient conversion-type Cu2+ storage electrode","authors":"Nan Huang ,&nbsp;Chenqi Yao ,&nbsp;Juanjuan Cheng ,&nbsp;Fawang Li ,&nbsp;Yunzhuo Zhao ,&nbsp;Yun Ou ,&nbsp;Longfei Liu","doi":"10.1016/j.nxmate.2024.100422","DOIUrl":"10.1016/j.nxmate.2024.100422","url":null,"abstract":"<div><div>Electrochemical activation can turn inactive materials into active materials in situ for energy storage facilely, controllably and efficiently, which makes metal sulfides feasible for Cu²⁺ storage based on electrochemical activated into CuS. Among common heavy metal sulfides, MnS has the highest solubility product and high Cu²⁺ adsorption and exchange rate in the copper removal by vulcanization in nickel electrolytic anodic solution. Here, MnS is electrochemical activated in situ in aqueous Cu-ion battery, and the effects of crystal structure and particle size on the electrochemical activation of MnS were revealed. The results show that both α, γ-MnS can be electrochemical activated, and activation cycling number is related to the particle size of MnS. When the MnS particle size is ball-milled small enough (1–2 μm), MnS will be completely transformed into CuS during the first discharge process, and then CuS↔Cu₂S will participate in the reversible conversion reaction for copper storage. When the MnS particle size is larger (&gt; 10 μm), the α-MnS electrode capacity gradually increases and becomes stable after 30 cycles, and the capacity remains at 458.6 mAh g^–1 after 300 cycles.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100422"},"PeriodicalIF":0.0,"publicationDate":"2024-11-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain promoted azide alkyne cycloaddition, an efficient surface functionalization strategy for microRNA magnetic separation","authors":"Djamila Kechkeche ,&nbsp;Sirine El Mousli ,&nbsp;Claire Poujouly ,&nbsp;Emilie Secret ,&nbsp;Vincent Dupuis ,&nbsp;Isabelle Le Potier ,&nbsp;Marie-Emmanuelle Goriot ,&nbsp;Julien Siracusa ,&nbsp;Sébastien Banzet ,&nbsp;Jean Gamby ,&nbsp;Jean-Michel Siaugue","doi":"10.1016/j.nxmate.2024.100409","DOIUrl":"10.1016/j.nxmate.2024.100409","url":null,"abstract":"<div><div>In an emergency context, the detection of microRNA (miRNA), which are potential biomarkers of cardiovascular and muscular pathologies is hampered by the time required for the various steps involved: treatment of the patient sample, reverse transcription (RT), and finally polymerase chain reaction (PCR). In this context, magnetically assisted extraction of miRNA could shorten the sample treatment duration and enable a potential pre-concentration to gain in sensitivity. To this goal, magnetic nanoparticles (MNP) functionalized with DNA were developed. Maghemite nanoparticles were coated with a layer of silica, doubly functionalized with PEG chains to guarantee colloidal stability and limit non-specific protein adsorption, and amine functions to allow post-functionalization with DNA which have complementary sequences of the targeted miRNA. Two post-functionalization strategies were tested, one based on the reaction between a thiolated DNA and a maleimide group at the surface of the MNP, the other between an azide-functionalized DNA and a dibenzocyclooctyne group on the surface of the MNP. The strain-promoted azide alkyne cycloaddition (SPAAC click chemistry) proved to be the most efficient functionalization strategy. Optimization of the complementary DNA grafting protocol, carried out by varying the ratios between the quantities of dibenzocyclooctyne groups and DNA and between the quantities of DNA and MNP, revealed on the one hand that the quantity of DNA grafted per nanoparticle could be finely controlled, and on the other hand that the grafting on the MNP’s surface of an excessive quantity of dibenzocyclooctyne groups led to a reduction in grafting yields. The optimized process was used for grafting the complementary DNA of 6 different miRNA, including 4 biomarkers of muscle injury (miR-1, 133a, 133b, and 206). It led to the grafting of approximately 4 complementary DNA per MNP, whatever the nucleotide sequence considered. Capture of the targeted miRNA by magnetic separation was then studied in buffered model media and in complex biological media. This study showed that MNP allowed magnetically-assisted extraction of target miRNA with good hybridization yields, even in biological media for which the capture capacity was preserved at around 75 %, with rapid kinetics and satisfactory selectivity.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100409"},"PeriodicalIF":0.0,"publicationDate":"2024-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142656011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced functionalities in flexible poly (vinylidene fluoride-trifluoroethylene)/cerium oxide doped sodium bismuth titanate [P(VDF-TrFE)/NBT-CeO2] ceramic polymer composite films: A comprehensive investigation of piezoelectric, pyroelectric, and ferroelectric properties","authors":"T.S. Velayutham,&nbsp;N.A. Halim,&nbsp;W.H. Abd. Majid","doi":"10.1016/j.nxmate.2024.100416","DOIUrl":"10.1016/j.nxmate.2024.100416","url":null,"abstract":"<div><div>In the pursuit of innovative smart polymer piezoelectric ceramic composites, we present a thorough examination of the physical, structural, and polarization characteristics of a novel flexible polymer ceramic composite comprising sodium-bismuth titanate (NBT) doped with 0.6 mass % CeO₂ as ceramic fillers embedded in a poly (vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) polymer matrix. The incorporation of these fillers serves to increase both the mechanical strength and functional attributes of the resulting polymer-ceramic composites. Various volume percentages of ceramic fillers were employed, and the experimental effective dielectric permittivity results were systematically fitted to established theoretical models, including Maxwell, Clausius<span><math><mo>−</mo></math></span>Mossotti, Furukawa, and effective medium theory (EMT). Our findings reveal that the composite films exhibit exceptional piezo-, pyro-, and ferroelectric properties when compared to the pristine P(VDF-TrFE) copolymer. The optimum concentration of NBT-0.6 CeO₂ filler was determined to be 0.2 vol fraction resulting in a remarkable enhancement of the key parameters. Specifically, the pyroelectric coefficient increased from 32 μC/m²K to 43 μC/m²K (a ∼35 % increment), remnant polarization surged from 80 mC/m² to 166 mC/m² (an impressive ∼110 % increment), and the piezoelectric constant (<em>d</em>₃₃) elevated from −38 pC/N to 49 pC/N (a substantial ∼30 % increment). These findings signify the potential of these optimized samples for applications in high energy density capacitors and/or highly integrated and intelligent piezoelectric devices. This comprehensive investigation not only advances our understanding of the synergistic effects within polymer-ceramic composites but also underscores the potential of the proposed material system for practical applications, providing valuable insights for the development of advanced multifunctional materials.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100416"},"PeriodicalIF":0.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harnessing machine learning for high-throughput screening of high thermal conductivity polyimides: A multiscale feature engineering approach","authors":"Jiale Han ,&nbsp;Chunhua Ying ,&nbsp;Yue Cao,&nbsp;Wen Li,&nbsp;Yuan Feng,&nbsp;Masood Mortazavi,&nbsp;Pingfan Wu,&nbsp;Liang Peng,&nbsp;Jiechen Wang","doi":"10.1016/j.nxmate.2024.100420","DOIUrl":"10.1016/j.nxmate.2024.100420","url":null,"abstract":"<div><div>Polyimides are known for their exceptional thermal stability and are widely utilized in high-temperature and electronic applications. To further explore and broaden their application in electronic packaging and thermal management, developing polyimide with high thermal conductivity remains a significant challenge. In this study, we present a machine learning technique with novel multiscale feature engineering approach to predict and identify high thermal conductivity polyimide efficiently. Our workflow involves digitally representing chemical structures using physical insights and refining these representations through the Statistical – Tree – Recursive feature engineering pipeline, which includes three steps--statistical selection, tree-based cascading feature selection, and recursive feature elimination. This process results in the creation of a comprehensive combinational feature set. Multiple machine learning models were trained and validated, demonstrating high predictive accuracy and generalizability. High-throughput screening identified polyimide candidates with thermal conductivity values exceeding 0.4 W/(m⋅K), and these predictions were validated using non-equilibrium molecular dynamics simulation. This workflow provides valuable insights into structure-property relationships, offering a robust framework for designing polymer materials with improved thermal properties for applications in electronics packaging, flexible sensors, and other high-performance devices.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100420"},"PeriodicalIF":0.0,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extraction and characteristic properties analyses of sodium alginate derived from the Sargassum oligocystum brown seaweed alga of the Bay of Bengal","authors":"Md. Anwar Arfien Khan ,&nbsp;Md. Monjurul Hasan ,&nbsp;Md. Kawsar Hossain ,&nbsp;Dabashes Adhikery ,&nbsp;Mahmuda Hakim ,&nbsp;Liton Chandra Mohanta ,&nbsp;Abu Sayeed Muhammed Sharif ,&nbsp;Ashish Kumar Sarker","doi":"10.1016/j.nxmate.2024.100417","DOIUrl":"10.1016/j.nxmate.2024.100417","url":null,"abstract":"<div><div>Sodium alginate extracted from <em>Sargassum oligocystum</em> brown seaweed alga is an important blue economy development process of the Bay of Bengal. In the present study, sodium alginate was extracted from the brown seaweed alga collected from the Cox’s Bazar coastal area of the Bay of Bengal. The extracted product was characterized with the Ultraviolet-visible (UV–visible) spectrophotometer, Fluorescence spectrophotometer, Fourier transform-infrared radiation (FT-IR) spectrophotometer, X-ray diffractometer (XRD), and Scanning electron microscope (SEM). The product yield was optimized with different pH levels and the maximum yield was obtained at 32.5 % at pH 10.96. The moisture, and ash content of the extracted product was measured and found at 13.25 % and 4.35 %, respectively. The viscosity of the extracted product was obtained at 60.1 mPs. The UV–visible spectrophotometry showed different absorbance peaks found at 234 nm, 240 nm, 250 nm, and 264 nm which assigned the extracted product of sodium alginate, and the maximum absorption peak lies at 276.7 nm which assigned flavonoids, and their derivatives of alginates. The fluorescence spectrophotometry demonstrated a strong emission peak at 460 nm with higher intensity (200), indicating the presence of sodium alginate. The FTIR showed the characteristic peaks that demonstrated different functional groups of sodium alginate. The XRD pattern demonstrated 0.24 crystalline indexes indicating the semi-crystalline product in nature. SEM showed clear fibrils of sodium alginate morphology indicating the absence of impurity materials.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100417"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142593850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In situ formation of oxygen-deficient WO3-x nanosheets for enhanced photocatalytic activity in water splitting and plastic reforming","authors":"Yangsen Xu ,&nbsp;Wenwu Shi ,&nbsp;Biao Huang ,&nbsp;Shuang Tang ,&nbsp;Zhenyuan Jin ,&nbsp;Yonghao Xiao ,&nbsp;Feifei Lu ,&nbsp;Xinzhong Wang","doi":"10.1016/j.nxmate.2024.100421","DOIUrl":"10.1016/j.nxmate.2024.100421","url":null,"abstract":"<div><div>Photocatalytic pathways are essential for the sustainable production of chemicals and fuels, pivotal for achieving a pollution-free planet. Electron-hole recombination is a critical problem that has, so far, limited the efficiency of the photocatalytic materials. Here, oxygen-deficient WO_3-x nanosheets were <em>in situ</em> grown in a polymeric carbon nitride (PCN) support during the thermal polycondensation of melamine. The introduction of defect in WO_3-x, accompanied by spin polarization and the formed WO_3-x/PCN heterostructure, greatly accelerated the charge separation and transfer. The synthesized WO_3-x/PCN composite exhibited a tenfold increase in hydrogen generation activity than pure PCN under visible-light (420 ≤ λ ≤ 780 nm). The WO_3-x/PCN also demonstrated consecutive 24 h and stable photocatalytic H₂ production in the aqueous plastic-containing [poly(vinyl alcohol) (PVA), poly(ethylene terephthalate) (PET) and the PET bottle] solutions under visible light. The hydrogen production rates were determined to be 111.2, 50.5, and 7.8 μmol·h⁻¹·g⁻¹ in PVA, PET and PET bottle, respectively. In addition, the oxygen vacancies WO₃ with their localized surface plasmon resonance effect, facilitated efficient utilization of NIR photon and the hydrogen evolution rate over WO_3-x/PCN reached to 120 μmol h⁻¹·g⁻¹ under NIR light (700 ≤ λ ≤ 780 nm). This research not only advances the potential applications of WO_3-x/PCN in sustainable energy production but also provides insights into environmental remediation through the conversion of plastic wastes.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100421"},"PeriodicalIF":0.0,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142586571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single atom Pt supported by two-dimensional transition metal dichalcogenides for photocatalytic removal of harmful gases: A density functional theory study","authors":"Wentao Zhang ,&nbsp;Degui Gao ,&nbsp;Yue Zhao ,&nbsp;Zhifeng Li ,&nbsp;Wenguang Huang ,&nbsp;Tianyin Huang ,&nbsp;Bingdang Wu","doi":"10.1016/j.nxmate.2024.100418","DOIUrl":"10.1016/j.nxmate.2024.100418","url":null,"abstract":"<div><div>Two-dimensional transition metal dichalcogenides (TMDs) has a broad application prospect in photocatalytic removal of harmful gases, but it is limited by the slow carrier separation efficiency. In order to improve the slow carrier dynamics, loading the TMDs with trace precious metals is an effective strategy. Thanks to the presence of precious metals, the recombination of electron and hole is inhibited. In this paper, the photocatalytic removal potential of single atom Pt supported by TMDs for harmful gases was discussed. Specifically, using density functional theory, it was found that Pt@2H-MoS₂ and Pt@2H-MoSe₂ possessed moderate bandgap widths, excellent stability and light absorption ability. Using CO, NO, SO and SO₂ as model harmful gases, it was proved that Pt@2H-MoS₂ and Pt@2H-MoSe₂ can realize the photocatalytic removal of harmful gases by charge transfer and molecular orbital hybridization analysis. The above calculations exhibit that Pt@2H-MoS₂ and Pt@2H-MoSe₂ photocatalysts with excellent activity and stability possess broad prospects for the removal of harmful gases.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100418"},"PeriodicalIF":0.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoparticle integrated guar gum hydrogel-based immunosensor for biomedical application","authors":"Shweta Panwar ,&nbsp;Suveen Kumar","doi":"10.1016/j.nxmate.2024.100407","DOIUrl":"10.1016/j.nxmate.2024.100407","url":null,"abstract":"<div><div>This paper contains results of studies related to fabrication of nanostructured metal oxide (MO) doped guar gum hydrogel (GGH) based immunosensing platform for detection of oral cancer biomarker (CYFRA-21–1). First, we synthesized nanostructured zirconia (nZrO₂) through hydrothermal process and thereafter it has been functionalized with serine amino acid. The GGH has been synthesized through chemical process. Further, the solution of nZrO₂ was mixed with GGH in 1:1 ratio in ddH₂O. The prepared mixture has been further deposited onto a pre-hydrolyzed indium oxide (ITO) coated glass electrode through drop cast method. The anti-CYFRA-21–1 has been immobilized through EDC-NHS chemistry and Bovine Serum Albumin (BSA) has been used for blocking of nonspecific binding sites. X-Ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform infrared spectroscopy (FTIR) have been used to investigate morphological as well as functional characterization of synthesized material. However, electrochemical studies have been used to characterize fabricated electrodes as well as response studies. The fabricated immunoelectrode (BSA/anti-CYFRA-21–1/Serine/nZrO₂/Hydrogel/ITO) exhibits a wider linear detection range (2.5–80 ng mL⁻¹), remarkably high sensitivity (0.86 µA mg⁻¹ mL cm⁻²) with shelf life up to 48 days. The electrochemical response studies of fabricated electrode have been further validated through enzyme-linked immunosorbent assay (ELISA) on to obtained saliva sample of oral cancer patients. Oral cancer biomarker detection is key for early diagnosis, personalized treatment, monitoring, enabling timely interventions and improved patient outcomes. We can easily investigate the stage of oral cancer through the detection of concentration of biomarkers secreted in saliva sample of oral cancer patients.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100407"},"PeriodicalIF":0.0,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deep learning based segmentation of binder and fibers in gas diffusion layers","authors":"Andreas Grießer ,&nbsp;Rolf Westerteiger ,&nbsp;Erik Glatt ,&nbsp;Hans Hagen ,&nbsp;Andreas Wiegmann","doi":"10.1016/j.nxmate.2024.100411","DOIUrl":"10.1016/j.nxmate.2024.100411","url":null,"abstract":"<div><div>Gas diffusion layers (GDLs) are vital parts for the performance of proton-exchange membrane fuel cells (PEMFCs). In many cases, they are made of Carbon-Carbon Composite Paper (CCCP), which consists of carbon fibers and a carbonized binder material. The distribution of the fibers and binder in the GDL strongly influences the performance of a PEMFC. Synchrotron scans are a great way to obtain information about the microstructural composition of carbon paper GDLs (Figure 2), but there is one major obstacle. Binder and fibers tend to have the same attenuation and, consequently, the same gray values in the scans. To overcome this, we introduce a machine learning-based method that segments fibers and binder from the local morphology of a CCCP. The training data is generated using FiberGeo, a module in the GeoDict software for fibrous microstructure generation. FiberGeo creates fibers based on stochastic geometry and adds binder using morphological opening and closing operations. We applied the machine learning-based method to four Scans of samples of Toray Carbon Paper with varying amounts of binder in them. The result is the quantification of individual voxels as fiber or binder material that can be used, for example, in performance simulations of property simulations in PEMFCs <span><span>[1]</span></span>, <span><span>[2]</span></span>, <span><span>[3]</span></span>, <span><span>[4]</span></span>. Here, we focus on the differences in the spatial distribution of the binder both in the through-plane and in-plane directions.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"6 ","pages":"Article 100411"},"PeriodicalIF":0.0,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142560760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of nickel-deactivations on zeolites-Y of different SiO2/Al2O3 ratios in catalytic cracking of hydrocarbons","authors":"D.E. Adanenche ,&nbsp;A.Y. Atta ,&nbsp;A. Aliyu ,&nbsp;B.J. El-Yakubu","doi":"10.1016/j.nxmate.2024.100413","DOIUrl":"10.1016/j.nxmate.2024.100413","url":null,"abstract":"<div><div>Effects of nickel deactivation on catalytic activities of three types of zeolites-Y (Y-5.1, USY-5.2, and VUSY-12) with varying SiO₂/Al₂O₃ ratios were studied in cracking of hydrocarbons. Physicochemical characteristics such as crystalline phases, Ni oxidation states, morphology, acidity, surface area, and thermal stability of the samples were analysed. XRD revealed the absence of observable nickel compounds below 5 wt%, with NiO phase emerging at higher concentrations. Surface areas decreased from 826 to 615 m²/g (Y-5.1), 786–686 m²/g (USY-5.2), and 762–571 m²/g (VUSY-12) at 30 wt% Ni. The total acid sites also reduced from 17.247 to 9.826 µmol/g (Y-5.1), 15.464–8.854 µmol/g (USY-5.2), and 7.094–4.876 µmol/g (VUSY-12). XPS confirmed Ni²⁺ states. Catalytic cracking tests using n-Heptane demonstrated increases in C₅-C₆ alkanes, olefins, hydrogen, and methane yields as nickel concentration increased, with respective values of 64 %, 28 %, 79 % and 68 % for Y-5.1; 62 %, 28 %, 76 %, and 62 % for USY-5.2; and 58 %, 21 %, 75 %, and 60 % for VUSY-12. A corresponding decrease in heavier components were observed. The study demonstrates that nickel modification significantly impacts the physicochemical properties and catalytic performance of zeolite-Y and these depend strongly on the SiO₂/Al₂O₃ ratios. The study gives further insights into the structural and catalytic modifications induced by nickel doping in zeolites, highlighting the potential of nickel-modified zeolites in promoting undesirable hydrogen and gas.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"7 ","pages":"Article 100413"},"PeriodicalIF":0.0,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142540052","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}