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Enhanced photocatalytic activity of BiPO4 towards the photo-degradation of Rhodamine B: Effect of precursor phosphates (Na2HPO4, KH2PO4, and NH4H2PO4) on BiPO4 structure, morphology and optical properties 增强BiPO4光催化降解罗丹明B的活性:前驱磷酸盐(Na2HPO4、KH2PO4和NH4H2PO4)对BiPO4结构、形态和光学性质的影响
Next Materials Pub Date : 2025-07-22 DOI: 10.1016/j.nxmate.2025.100975
A. Bouddouch , B. Akhsassi , Y. Ettahiri , L. Mllaoiy , B. Bakiz , F. Guinneton , S. Villain , A. Benlhachemi
{"title":"Enhanced photocatalytic activity of BiPO4 towards the photo-degradation of Rhodamine B: Effect of precursor phosphates (Na2HPO4, KH2PO4, and NH4H2PO4) on BiPO4 structure, morphology and optical properties","authors":"A. Bouddouch ,&nbsp;B. Akhsassi ,&nbsp;Y. Ettahiri ,&nbsp;L. Mllaoiy ,&nbsp;B. Bakiz ,&nbsp;F. Guinneton ,&nbsp;S. Villain ,&nbsp;A. Benlhachemi","doi":"10.1016/j.nxmate.2025.100975","DOIUrl":"10.1016/j.nxmate.2025.100975","url":null,"abstract":"<div><div>BiPO<sub>4</sub> was prepared by the precipitation route using three different types of phosphate salts (Na<sub>2</sub>HPO<sub>4</sub>, KH<sub>2</sub>PO<sub>4</sub>, and NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub>) as starting precursor. The dissolution of each phosphate precursor used in distilled water gave a specific pH that affected the purity, morphology and optical properties of the BiPO<sub>4</sub> produced. BiPO<sub>4</sub> synthesized from Na<sub>2</sub>HPO<sub>4</sub> showed the best photocatalytic activity towards the photo-degradation of Rhodamine B as a polluting dye. The effect of the precipitating agent on the structure, size and optical proprieties of the particles was confirmed by the X-ray diffraction technique, scanning electron microscopy, (BET) method, Raman analysis and Diffuse Reflectance Spectroscopy. Several organic and inorganic scavengers were used to evaluate the role of various photogenerated reactive species. The kinetic study followed the pseudo-first-order kinetic model. In addition, the proposed reaction mechanism for the degradation of Rhodamine B in the presence of the best photocatalyst was discussed.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100975"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144679977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In-depth crystallographic structure and optoelectrical properties of ZnO nanoparticles synthesized by a facile precipitation method 易沉淀法制备ZnO纳米颗粒的晶体结构及光电性能
Next Materials Pub Date : 2025-07-19 DOI: 10.1016/j.nxmate.2025.100960
Nadim Munna , Mohammad Shah Jamal , Abdur Rahim , Md. Khairul Islam , Ajadur Rahman Shakil , Mohammad Kamruzzaman
{"title":"In-depth crystallographic structure and optoelectrical properties of ZnO nanoparticles synthesized by a facile precipitation method","authors":"Nadim Munna ,&nbsp;Mohammad Shah Jamal ,&nbsp;Abdur Rahim ,&nbsp;Md. Khairul Islam ,&nbsp;Ajadur Rahman Shakil ,&nbsp;Mohammad Kamruzzaman","doi":"10.1016/j.nxmate.2025.100960","DOIUrl":"10.1016/j.nxmate.2025.100960","url":null,"abstract":"<div><div>Zinc oxide (ZnO) nanoparticles (NPs) were synthesized using a simple precipitation method. X-ray diffraction (XRD) analysis confirmed the formation of a hexagonal wurtzite phase (space group P63mc), with refined lattice parameters a = b = 3.308 Å and c = 5.196 Å, and a Zn–O bond length of 1.9654 Å. The atomic packing factor was calculated as 0.877, indicating a crystallinity of 97.01 %. Crystallite size, estimated through various models, ranged from 31.85 nm (Scherrer) to 61.08 nm (Williamson-Hall), with intermediate values from Monshi-Scherrer (45.47 nm), Halder-Wagner (34.67 nm), and Size-Strain Plot (53.62 nm) methods. Microstrain values varied between 0.0004724 and 0.0420, while residual stress and dislocation density were 65.30 MPa and 0.00046–0.00130 line/m², respectively. RMS strain values obtained from the SSP and Wilson methods were 0.001551 and 0.000389. A texture coefficient of 0.778 and a preferential growth of –0.25 indicated anisotropic crystal orientation. FESEM analysis showed particle sizes between 40.7 and 97.3 nm, and EDS confirmed the presence of Zn and O. UV–Vis spectroscopy revealed a direct bandgap of 3.25 eV, suggesting suitability for photovoltaic applications.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100960"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe-single-atom catalyst anchored on N,S-codoped carbon derived from Fe(II) complexes with three bidentate precursors for superior oxygen reduction performance 铁-单原子催化剂锚定在N, s共掺杂碳上,由铁(II)配合物与三个双齿前驱体衍生,具有优异的氧还原性能
Next Materials Pub Date : 2025-07-19 DOI: 10.1016/j.nxmate.2025.100961
Yining Liang , Yue Yang , Lin Xu , Tianping Wang , Gengzhe Shen , Jing Kong , De Ning , Zhengjian Chen
{"title":"Fe-single-atom catalyst anchored on N,S-codoped carbon derived from Fe(II) complexes with three bidentate precursors for superior oxygen reduction performance","authors":"Yining Liang ,&nbsp;Yue Yang ,&nbsp;Lin Xu ,&nbsp;Tianping Wang ,&nbsp;Gengzhe Shen ,&nbsp;Jing Kong ,&nbsp;De Ning ,&nbsp;Zhengjian Chen","doi":"10.1016/j.nxmate.2025.100961","DOIUrl":"10.1016/j.nxmate.2025.100961","url":null,"abstract":"<div><div>Constructing single-atom active sites for high catalytic performance remains a significant challenge due to their easy migration and agglomeration. In this study, we constructed a noble-metal-free catalyst (Fe@N<sub>PD</sub>S<sub>B</sub>PC) derived from three precursors with strong N,N or S,S-bidentate chelating abilities, effectively coordinating and anchoring Fe<sup>2 +</sup> ions during pyrolysis to form single Fe sites dispersed on N,S-codoped porous carbon. The synergistic coordination of the three precursors endowed Fe@N<sub>PD</sub>S<sub>B</sub>PC with hierarchical porous structures, a high specific surface area (505 m<sup>2</sup> g<sup>−1</sup>) and a high N,S-codoping content (9.83 at%) compared to other carbon products (≤ 327 m<sup>2</sup> g<sup>−1</sup> and 7.37 at%, respectively) prepared from any two of the three precursors. Fe@N<sub>PD</sub>S<sub>B</sub>PC demonstrated excellent oxygen reduction performance with a significantly higher half-wave potential (0.924 V), kinetic current density at 0.85 V (40.0 mA cm<sup>−2</sup>) and electrochemical active surface area (365 cm<sup>2</sup><sub>ECSA</sub>) and significantly better durability and methanol tolerance than the benchmark Pt/C catalyst (0.882 V, 13.3 mA cm<sup>−2</sup> and 159 cm<sup>2</sup><sub>ECSA</sub>, respectively). When used in zinc-air batteries, Fe@N<sub>PD</sub>S<sub>B</sub>PC achieved considerably higher power density (210 mW cm<sup>−2</sup>), specific capacity (767 mAh g<sub>zn</sub><sup>−1</sup>), and longer-term cycling durability (200 h) at 5 mA cm<sup>−2</sup> than Pt/C (148 mW cm<sup>−2</sup>, 613 mAh g<sub>zn</sub><sup>−1</sup> and 55 h, respectively).</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100961"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrochemical lithium extraction from desalination brine via lithium-manganese oxide intercalation electrodes in capacitive deionization 电容去离子中锂-锰氧化物插层电极从海水淡化盐水中电化学提取锂
Next Materials Pub Date : 2025-07-19 DOI: 10.1016/j.nxmate.2025.100953
Wesam Abd El-Fattah , Ahlem Guesmi , Naoufel Ben Hamadi , Ahmad A. Alluhaybi , Dalia S. Muslim , Mohamed E.A. Ali
{"title":"Electrochemical lithium extraction from desalination brine via lithium-manganese oxide intercalation electrodes in capacitive deionization","authors":"Wesam Abd El-Fattah ,&nbsp;Ahlem Guesmi ,&nbsp;Naoufel Ben Hamadi ,&nbsp;Ahmad A. Alluhaybi ,&nbsp;Dalia S. Muslim ,&nbsp;Mohamed E.A. Ali","doi":"10.1016/j.nxmate.2025.100953","DOIUrl":"10.1016/j.nxmate.2025.100953","url":null,"abstract":"<div><div>The intensifying global demand for lithium necessitates the development of sustainable extraction pathways. Recovery of lithium from reverse osmosis (RO) desalination brine offers a compelling strategy to mitigate resource scarcity while valorising waste streams. This study investigates the application of capacitive deionization (CDI), an emerging electrochemical separation technology, for the selective recovery of lithium from RO brine solutions, emphasizing its low energy consumption and cost-effective operation. A lithium manganese oxide (LiMn₂O₄, LMO) sorbent was synthesized via a high-temperature solid-phase method and integrated as the cathodic material in a CDI cell operated at 1.1 V. The system was evaluated using a synthetic brine solution with a Li⁺/Na⁺ molar ratio of 1:30, representative of typical RO brine compositions. Comprehensive material characterization of the LMO employing scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and X-ray diffraction (XRD) confirmed the successful formation of a spinel-phase structure with heterogeneous morphology of the prepared LMO. Under optimized operating conditions, the system achieved a lithium electrosorption capacity of 16.14 mg g⁻¹ , with minimal sodium uptake (0.02 %), demonstrating remarkable ion selectivity of lithium ions. These findings highlight the potential of CDI as a scalable and sustainable process for lithium recovery from saline waste streams. The integration of LMO-based CDI systems into desalination systems presents a dual-benefit approach, coupling water treatment with strategic resource recovery and advancing the principles of a circular economy.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100953"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Green synthesis and application of metal nanoparticles (MNPs): A sustainable strategy for protecting wood from fungal and termite decay 绿色合成和应用金属纳米颗粒(MNPs):保护木材免受真菌和白蚁腐烂的可持续策略
Next Materials Pub Date : 2025-07-19 DOI: 10.1016/j.nxmate.2025.100962
Ankita Semwal , Kajal Gautam , Mohit Bhatt , Ranjana Yadav , Santan Barthwal , Hukum Singh
{"title":"Green synthesis and application of metal nanoparticles (MNPs): A sustainable strategy for protecting wood from fungal and termite decay","authors":"Ankita Semwal ,&nbsp;Kajal Gautam ,&nbsp;Mohit Bhatt ,&nbsp;Ranjana Yadav ,&nbsp;Santan Barthwal ,&nbsp;Hukum Singh","doi":"10.1016/j.nxmate.2025.100962","DOIUrl":"10.1016/j.nxmate.2025.100962","url":null,"abstract":"<div><div>Preserving Wood decay against biotic agents such as fungi and insects, is a critical aspect of sustainable forestry practices while fulfilling the wood demands of various industries. These practices aim to prolong the lifespan of timber products and enhance productivity while minimizing the environmental risk from chemical treatments. Traditional wood preservatives and management approaches often contain toxic compounds harmful to humans and the environment. However, plant-based green synthesis of metal nanoparticles (MNPs) is a sustainable and eco-friendly approach and presents a promising alternative. In contrast to conventional methods, green synthesis approaches utilize natural sources such as plant extracts, microorganisms, and biomolecules as reducing and stabilizing agents. These eco-friendly methods reduce the use of hazardous substances and offer advantages in terms of cost-effectiveness and scalability. Therefore, this review focuses on identifying effective green synthesis approaches by evaluating various methods of plant-based green synthesis to produce MNPs and their applications in protecting wood from biotic agents that degrade living and nonliving wood.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100962"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Infrared spectroscopic and conductometric analysis of the structural and electrochemical properties of cobalt and neodymium caprate 钴和硝酸钕的结构和电化学性能的红外光谱和电导分析
Next Materials Pub Date : 2025-07-19 DOI: 10.1016/j.nxmate.2025.100967
Suchi Singh , Kavita Poonia , R.K. Shukla
{"title":"Infrared spectroscopic and conductometric analysis of the structural and electrochemical properties of cobalt and neodymium caprate","authors":"Suchi Singh ,&nbsp;Kavita Poonia ,&nbsp;R.K. Shukla","doi":"10.1016/j.nxmate.2025.100967","DOIUrl":"10.1016/j.nxmate.2025.100967","url":null,"abstract":"<div><div>This study investigates the structural and conductive properties of cobalt and neodymium caprates in mixed solvent systems. Using infrared spectroscopy, we found that metal-carboxylate complexes form, with metal oxygen bonds affecting the behavior of fatty acids. The conductivity measurements show soaps concentration, ionization, and micelle formation impact ionic mobility and conductance. These findings indicate that metal soaps behave as weak electrolytes, with potential applications in catalysis, materials science, and industry.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100967"},"PeriodicalIF":0.0,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144662677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Creep suppression and fatigue in bio-based composites manufactured via conventional and large format additive manufacturing processes 通过传统和大尺寸增材制造工艺制造的生物基复合材料的蠕变抑制和疲劳
Next Materials Pub Date : 2025-07-18 DOI: 10.1016/j.nxmate.2025.100940
Amber M. Hubbard , Katie Copenhaver , Caitlyn M. Clarkson , Andrés Márquez Rossy , Mitchell L. Rencheck , Meghan E. Lamm , Soydan Ozcan
{"title":"Creep suppression and fatigue in bio-based composites manufactured via conventional and large format additive manufacturing processes","authors":"Amber M. Hubbard ,&nbsp;Katie Copenhaver ,&nbsp;Caitlyn M. Clarkson ,&nbsp;Andrés Márquez Rossy ,&nbsp;Mitchell L. Rencheck ,&nbsp;Meghan E. Lamm ,&nbsp;Soydan Ozcan","doi":"10.1016/j.nxmate.2025.100940","DOIUrl":"10.1016/j.nxmate.2025.100940","url":null,"abstract":"<div><div>The emergence of novel extrusion-based additive manufacturing (AM) processes has prompted the development of new thermoplastic composite feedstocks, and broadening sustainability initiatives have driven the development of bio-based and recyclable material for AM feedstocks. Poly(lactic acid) (PLA) with wood flour (WF) is one composite system that has been demonstrated in numerous AM applications, as well as traditional processing methods (<em>i.e.,</em> compression and injection molding); however, there has been a need to understand how the variation in processing methodology impacts the material performance of these bio-based feedstocks from a fundamental perspective, with particular emphasis on creep for an extended application use-life. Herein, PLA/WF is explored as a feedstock material for large format additive manufacturing (LFAM) and the performance of additively manufactured materials is compared to those produced via more traditional processing methods. It is also demonstrated that the addition of WF decreases the material’s coefficient of thermal expansion (CTE) while increasing its Young’s modulus, susceptibility to water uptake, and creep fatigue resistance. Essentially, the addition of 20 wt% WF results in a 92 % decrease in rubbery regime CTE while simultaneously resulting in a 14 % increase in modulus, 190 % increase in water uptake, and a 31 % decrease in residual strain after cyclic creep tests. The processing method was also found to play a large role in the final part performance, with the printed material increasing the crystallinity by 183 % and 214 % compared to its compression and injection molded counterparts. Furthermore, the porosity of printed samples increased by two orders of magnitude compared to samples prepared via traditional processing methods.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100940"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Strategic insights into Prussian Blue Analogues-based catalysts: Design and regulation for enhanced electrochemical energy storage and conversion 战略洞察普鲁士蓝模拟催化剂:设计和调节增强电化学能量存储和转换
Next Materials Pub Date : 2025-07-18 DOI: 10.1016/j.nxmate.2025.100930
Gnanaprakasam Janani , Soobin Park , Subramani Surendran , Yoongu Lim , Dae Jun Moon , Gyoung Hwa Jeong , Heechae Choi , Gibum Kwon , Xiaoyan Lu , Kyoungsuk Jin , Uk Sim
{"title":"Strategic insights into Prussian Blue Analogues-based catalysts: Design and regulation for enhanced electrochemical energy storage and conversion","authors":"Gnanaprakasam Janani ,&nbsp;Soobin Park ,&nbsp;Subramani Surendran ,&nbsp;Yoongu Lim ,&nbsp;Dae Jun Moon ,&nbsp;Gyoung Hwa Jeong ,&nbsp;Heechae Choi ,&nbsp;Gibum Kwon ,&nbsp;Xiaoyan Lu ,&nbsp;Kyoungsuk Jin ,&nbsp;Uk Sim","doi":"10.1016/j.nxmate.2025.100930","DOIUrl":"10.1016/j.nxmate.2025.100930","url":null,"abstract":"<div><div>Prussian Blue Analogues (PBAs), a distinctive class of metal–organic frameworks (MOFs) within the broader category of coordination polymers, are formed through the self-assembly of transition metal ions and cyanide ligands. The characteristic open lattice architecture of these materials, combined with their excellent charge transport capabilities, electrical conductivity, stable framework structures, tunable redox sites, and modifiable synthetic pathways, positions pristine PBAs as promising candidates for diverse electrochemical technologies. The significance of PBAs extends beyond their standalone applications, as they function exceptionally well as structural templates and precursor materials for generating various functional micro- and nanostructures. Through controlled decomposition or chemical conversion processes, PBAs can be transformed into metal oxides, chalcogenides, carbides, nitrides, phosphides, carbonaceous materials, and metallic alloys. The inherent compositional homogeneity and adjustable metal ratios within PBA frameworks enable precise engineering of the final product characteristics. Materials derived from PBA precursors often exhibit superior electrochemical performance compared to conventionally synthesized counterparts, attributed to their enlarged surface areas, optimized pore structures, and abundant catalytically active sites. These enhanced properties make PBA-derived materials (PBADs) particularly attractive for advanced applications in energy storage and energy conversion technologies. This review provides a systematic analysis of the design strategies for both pristine PBAs and PBADs, emphasizing their expanding significance in energy-related applications and beyond.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100930"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and characterization of sodium tripolyphosphate cross-linked chitosan/guar gum composite films reinforced with bentonite clay for food packaging application 膨润土增强三聚磷酸钠交联壳聚糖/瓜尔胶复合食品包装膜的研制与表征
Next Materials Pub Date : 2025-07-18 DOI: 10.1016/j.nxmate.2025.100950
Aminu Abdullahi , Tarangini Korumilli , K. Jagajjanani Rao
{"title":"Development and characterization of sodium tripolyphosphate cross-linked chitosan/guar gum composite films reinforced with bentonite clay for food packaging application","authors":"Aminu Abdullahi ,&nbsp;Tarangini Korumilli ,&nbsp;K. Jagajjanani Rao","doi":"10.1016/j.nxmate.2025.100950","DOIUrl":"10.1016/j.nxmate.2025.100950","url":null,"abstract":"<div><div>The increasing demand for sustainable food packaging materials has driven research into natural polymer based films as alternatives to conventional plastics. This work reported a novel STPP cross-linked composite film based Chitosan/Guar gum reinforced with Bentonite clay. The biopolymer composite films were prepared by solvent casting methods using chitosan 1 % (w/v), guar gum 1.5 % (w/v), STPP 0.09 % (w/v), glycerol 2 % (w/v) with addition of varying concentration of bentonite clay (0.05 %. 0.1 %, 0.25 % and 0.4 % w/v). The cross-linking effect and evidence of components interactions has been confirmed by Fourier transform infrared (FTIR) analysis. The addition of bentonite clay (BT) to chitosan/guar gum (CS/GG) films markedly improves hydrophobicity, water resistance (reduced swelling and solubility) and barrier properties (WVTR). The films with 0.25, and 0.1 % BT reinforcement shows highest water repellence capacity with water contact angle (WCA) values of 111˚ and 106.75˚ respectively. Furthermore, film containing 0.25 % BT concentration is the most effective in enhancing mechanical and barrier properties compared to control and all other films attributable to its crystalline structure as evident in XRD patterns. The films displayed significant antimicrobial efficacy against bacteria gram-positive (<em>Bacillus cereus</em> and <em>Staphylococci aureus</em>), gram-negative (<em>Escherichia coli</em>) and fungal <em>F. oxysporum</em>. In addition, notable antioxidant activity against of 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals with highest quenching activity of 87.39 ± 0.01 % was observed in CS/GG/0.4 %(w/v) BT film, followed by CS/GG/0.25 % (w/v) BT film (87.12 ± 0.2 %). The study also underscores the potential of STPP as a crosslinking agent and bentonite filler for the development of composite film, suggesting applications in food packaging.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100950"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the properties of CuO/ZnO heterostructures obtained via thermal decomposition of metal acetates: Role of precursor strategy 金属醋酸盐热分解制备CuO/ZnO异质结构的性质:前驱体策略的作用
Next Materials Pub Date : 2025-07-18 DOI: 10.1016/j.nxmate.2025.100957
Florencia Yazmín Donaire Pereyra , Oscar Marin-Ramirez
{"title":"On the properties of CuO/ZnO heterostructures obtained via thermal decomposition of metal acetates: Role of precursor strategy","authors":"Florencia Yazmín Donaire Pereyra ,&nbsp;Oscar Marin-Ramirez","doi":"10.1016/j.nxmate.2025.100957","DOIUrl":"10.1016/j.nxmate.2025.100957","url":null,"abstract":"<div><div>CuO/ZnO heterostructures were synthesized via thermal decomposition of metal acetates following two distinct precursor strategies. Initially, pure CuO and ZnO powders were obtained by separate decomposition of copper(II) acetate monohydrate and zinc acetate dihydrate, respectively. In the first approach, both acetates were mixed prior to thermal treatment, yielding a direct CuO/ZnO heterostructure. In contrast, a second heterostructure was prepared by combining pre-synthesized CuO with zinc acetate before decomposition, resulting in a compositionally similar but structurally distinct material. All samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), photoluminescence (PL), and evaluated for their photocatalytic activity under UV–Vis irradiation. The analysis revealed that the precursor route significantly influenced the particle size, crystallite size, optical emission profiles, and photocatalytic performance. These findings highlight the critical role of synthesis design in tuning the functional properties of CuO/ZnO-based heterostructures and open new pathways for optimizing oxide-based photocatalysts through simple and scalable fabrication routes.</div></div>","PeriodicalId":100958,"journal":{"name":"Next Materials","volume":"9 ","pages":"Article 100957"},"PeriodicalIF":0.0,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144653215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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