Journal of Science: Advanced Materials and Devices最新文献

{"title":"Sustainable composite from furfuryl alcohol and wood flour with outstanding fire resistance and its prediction using neural networks","authors":"Lukas Manas ,&nbsp;Erika Pavlikova ,&nbsp;Miroslav Mrlik ,&nbsp;Roman Kolarik ,&nbsp;Jozef Martinka ,&nbsp;Peter Rantuch ,&nbsp;Tomas Sedlacek ,&nbsp;Tomas Plachy","doi":"10.1016/j.jsamd.2025.100976","DOIUrl":"10.1016/j.jsamd.2025.100976","url":null,"abstract":"<div><div>Novel composites were successfully produced using renewable green sources, furfuryl alcohol resin, commonly obtained from biomass, and wood flour. Compared with a conventional melt-blending technique used for the preparation of wood-plastic composites, this unique approach, utilizing low-viscosity thermoset resin with high affinity for wood, enables the avoidance of excessive treatment of wood flour. Four flame retardants possessing different flame-retardant mechanisms (expandable graphite (EG), ammonium dihydrogen phosphate (ADP), Exolit OP560 and dimethyl propane phosphonate) at two loading levels (7.5 and 15 wt%) were used to suppress the flammability of the composites evaluated by a cone calorimeter test, limiting oxygen index and UL 94. All investigated flame retardants significantly reduced maximum value of heat release rate (HRR) (EG and ADP approx. up to 75 %) and, moreover, ADP and EG significantly reduced the total smoke production (EG up to 25 % and ADP up to 96 %) confirming outstanding and unusual flammability suppression considering HRR reduction and a decrease in smoke production rate (SPR) at the same time. Besides that, the neural network prediction models for HRR and SPR from test time and mass loss rate were created and trained, giving the possibility to predict HRR and SPR values from simple and cheap tests, providing only mass loss rate at specific conditions.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100976"},"PeriodicalIF":6.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105151","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":"Closing the water cycle with biomass: Waste-to-water solar evaporator featuring wood-supported henna photothermal layer for dual-source purification","authors":"Jawad Ali ,&nbsp;Nazish Shahab ,&nbsp;Nasrul Wahab ,&nbsp;Jianjun Liu ,&nbsp;Vu Thi Hong Ha ,&nbsp;Do Thi Lien ,&nbsp;Tran Van Tan ,&nbsp;Maryam Al Huwayz ,&nbsp;Muneerah Alomar ,&nbsp;Abdul Waris Haqmal ,&nbsp;Muhammad Sajid ,&nbsp;Van-Duong Dao","doi":"10.1016/j.jsamd.2025.100997","DOIUrl":"10.1016/j.jsamd.2025.100997","url":null,"abstract":"<div><div>Addressing the critical global challenge of freshwater scarcity, this study presents an innovative solar-driven desalination system leveraging sustainable biomass-derived porous carbon to overcome the energy-intensive limitations of conventional methods like reverse osmosis. Herein, a cost-effective bilayer solar evaporator is fabricated through potassium carbonate-assisted microwave pyrolysis of henna leaves, yielding hierarchically porous carbon (HLPAC) with an ultrahigh specific surface area (1101.7 m² g⁻¹) and exceptional light absorption. The HLPAC is integrated with a natural wood substrate (HLPACW), synergizing the wood's inherent hydrophilicity, low thermal conductivity, and microchannels with the carbon layer's superior photothermal properties. This design optimizes solar energy utilization by enhancing broadband light absorption (97 % across 250–2500 nm), minimizing heat loss, and enabling rapid water transport. The optimized HLPACW 1:1 (HLPACW-1) evaporator achieves an evaporation rate of 2.38 kg m⁻² h⁻¹ under 1 sun irradiation (88 % efficiency), surpassing pure water by 47.6-fold and outperforming state-of-the-art solar evaporators. The composite's hierarchical porosity reduces vaporization enthalpy to 1427 J g⁻¹, enhancing energy efficiency. Crucially, the system demonstrates outstanding durability, maintaining performance over 15 cycles with negligible salt accumulation and achieving 99.9 % ion rejection in seawater desalination. It also exhibits exceptional heavy metal removal (e.g., 99.5 % for Pb²⁺), enabling dual-functionality for desalination and wastewater remediation. By transforming biomass waste into a scalable, eco-friendly material, this work pioneers a circular economy approach to water purification. The evaporator's low-cost fabrication, resilience in high-salinity environments, and dual purification capabilities position it as a transformative solution for sustainable freshwater generation in resource-limited regions, aligning with global decarbonization and sustainability goals.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100997"},"PeriodicalIF":6.8,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145026855","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":"Magnetic composites: A comprehensive review of microwave absorption and shielding properties","authors":"Prajna Paramita Mohapatra ,&nbsp;Mailadil Thomas Sebastian ,&nbsp;Hodam Karnajit Singh ,&nbsp;Pamu Dobbidi","doi":"10.1016/j.jsamd.2025.100978","DOIUrl":"10.1016/j.jsamd.2025.100978","url":null,"abstract":"<div><div>The widespread use of electronic devices has led to a surge in electromagnetic (EM) radiation, raising concerns about its potential impact on human health and the performance of sensitive electronic systems. Prolonged exposure to EM waves may pose biological risks by interacting with cellular structures and potentially affecting genetic material. The development of efficient electromagnetic interference (EMI) shielding and microwave absorption (MA) materials is receiving heightened attention among the research community. This review presents a comprehensive analysis of recent advancements in materials for EMI/MA applications, focusing on ferrite-based composites such as polymer–ferrite, MXene–ferrite rubber–ferrite, cement–ferrite, and textile–ferrite systems, each offering unique advantages in terms of flexibility, mechanical strength, structural integration, and wearability. These materials exhibit diverse attenuation mechanisms, including dielectric loss, magnetic loss, interfacial polarization, and impedance matching, contributing to effective EM wave suppression. Despite notable progress, challenges such as nanoparticle dispersion, environmental stability, and frequency-selective performance remain. The review also highlights emerging strategies like hybridization with 2D materials, defect modulation, and sustainable processing techniques to enhance shielding efficiency. Overall, ferrite-based composites represent a promising class of multifunctional materials that meet the growing demands of next-generation electronics, wearable technologies, and smart infrastructure.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100978"},"PeriodicalIF":6.8,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145045981","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":"Preparation of superparamagnetic iron oxide nanoparticles conjugated hollow gold nanospheres for MR/CT dual-mode imaging and synergistic photothermal-chemotherapy of cancer","authors":"Zhen Jin ,&nbsp;Linyan Xie ,&nbsp;Ke Bao ,&nbsp;Jiawei Xu ,&nbsp;Lin Feng ,&nbsp;Yi Guo ,&nbsp;Mao Wang ,&nbsp;Dongmei Zheng ,&nbsp;Laibo Song ,&nbsp;Wenlong Zhang ,&nbsp;Wu Ren","doi":"10.1016/j.jsamd.2025.100977","DOIUrl":"10.1016/j.jsamd.2025.100977","url":null,"abstract":"<div><div>Developing multifunctional nanotheranostics that are safe, stimuli-responsive for controlled drug release, and capable of precise imaging-guided multimodal synergistic therapy is of great significance for anti-cancer treatment. In this study, a multifunctional DOX-HSP nanocomposite was prepared by conjugating superparamagnetic iron oxide (SPIO) nanoparticles on the surface of DOX-loaded hollow gold nanospheres (HGNs) and PEG modification for computed tomography (CT)/magnetic resonance (MR) dual-mode imaging and synergistic photothermal-chemotherapy. The prepared DOX-HSP demonstrated favorable biocompatibility, high drug loading capacity, and considerable MR/CT image contrast agent capability. Moreover, on-demand controlled drug release could be achieved by preventing the premature drug release with the blocking effect of conjugated SPIO nanoparticles in a typical physiological environment and triggering drug release with NIR exposure in an acidic environment. Furthermore, the <em>in vitro</em> cell experiment revealed that the anti-tumor effect could be significantly enhanced via synergistic photothermal-chemotherapy. Therefore, we believe that the prepared DOX-HSP nanocomposite could provide great potential value for the biomedical area, including MR/CT imaging and synergistic cancer photothermal-chemotherapy.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100977"},"PeriodicalIF":6.8,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926274","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":"Lanthanide elements doped IZO semiconductor targets sputtered thin films as channel layers in high mobility thin film transistors","authors":"Bingxue Han ,&nbsp;Hua Xu ,&nbsp;Lijia Chen ,&nbsp;Chongyang Chen ,&nbsp;Bin Wu ,&nbsp;Lei Wang ,&nbsp;Zhijun Wang ,&nbsp;Benshuang Sun ,&nbsp;Jilin He","doi":"10.1016/j.jsamd.2025.100992","DOIUrl":"10.1016/j.jsamd.2025.100992","url":null,"abstract":"<div><div>Three novel rare-earth-doped indium-zinc oxide (RE-IZO) semiconductor targets, specifically PrIZO, NdIZO, and TbIZO, were synthesized via a defect-engineered sintering process. These targets were subsequently employed in magnetron sputtering to deposit high-mobility thin films, which functioned as channel layers in thin-film transistors (TFTs). Firstly, the mechanism of doping elements' influence on the phase regulation and grain refinement of these three targets during the densification process was systematically investigated, combined with first-principles calculations. The formation of PrInO₃ and NdInO₃ secondary phases during sintering significantly enhanced grain boundary migration resistance. This phenomenon stemmed from the significant mismatch in ionic radii between Pr³⁺ (0.99 Å)/Nd³⁺ (0.98 Å) and In³⁺(0.80 Å), which exceeded the mismatch in ionic radii between Tb³⁺ (0.92 Å) and In³⁺. The results showed that the densities of PrIZO and NdIZO targets were 99.7 % and 99.8 %, respectively, with grain sizes of 2.6 μm and 3.9 μm, and electrical conductivities of 2.2 mΩ cm and 5.2 mΩ cm, respectively, outperforming TbIZO target (density 95.1 %, grain size 4.4 μm, resistivity 8.1 mΩ cm). Subsequently, amorphous-structured, ultra-smooth-surface (R_a &lt; 0.5 nm), and highly uniform PrIZO, NdIZO, and the TbIZO transparent conductive films were prepared via optimized magnetron sputtering. As channel layers for thin-film transistors (TFTs), these films exhibit excellent electrical properties: <em>I</em>_on/<em>I</em>_off &gt;0.9, <em>μ</em>_sat &gt;21 cm²/V·s, threshold voltage &lt;2 V, and subthreshold swing &lt;0.3 V/dec. NdIZO TFTs exhibit the smallest threshold voltage shift (ΔV_th = 0.6 V) under positive bias stress (PBS), demonstrating excellent bias stability. The results showed that the better the overall performance of the targets, the better the performance of the TFT devices. This work provided an effective research strategy for developing channel layer materials for high-performance TFT devices.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100992"},"PeriodicalIF":6.8,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145105148","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":"Microstructural characteristics and mechanical behavior of in-situ synthesized AA2024– AlB2 composites produced via friction stir processing","authors":"Mahna Nikzad-Dinan,&nbsp;Roohollah Jamaati,&nbsp;Hamed Jamshidi Aval","doi":"10.1016/j.jsamd.2025.100993","DOIUrl":"10.1016/j.jsamd.2025.100993","url":null,"abstract":"<div><div>The in-situ AA2024–AlB₂ composites processed via friction stir processing reveal a strong dependency of both microstructural evolution and mechanical performance on processing parameters. When the tool rotates at 800 rpm, the process yields a fine-grained structure averaging around 2.8 μm, while also ensuring effective stabilization and uniform distribution of AlB₂ reinforcements. These conditions lead to a notable improvement in material properties, with hardness reaching 134.2 HV0.1 and tensile strength climbing to 508.2 MPa—an enhancement of 11.8 % over the unprocessed alloy (454.3 MPa). At this speed, the peak temperature remains controlled at approximately 467 °C, minimizing defects such as tunnel voids. In contrast, increasing the rotational speed to 1200 rpm generates excessive heat (above 495 °C), which accelerates grain coarsening (average grain size increases to 5.8 μm) and promotes particle clustering. These microstructural deteriorations correspond with a drop in hardness (106.6 HV_0.1) and mechanical strength. Therefore, the study identifies 800 rpm as the optimal processing speed, offering the best compromise between thermal input and strain rate to maximize material performance and microstructural uniformity.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100993"},"PeriodicalIF":6.8,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922509","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":"Photomultiplication organic photodetectors featuring bias-switchable broadband/narrowband responses based on electron tunneling","authors":"Gajendra Suthar ,&nbsp;Chih-Wei Chu ,&nbsp;Yi-Ming Chang ,&nbsp;Fang-Chung Chen","doi":"10.1016/j.jsamd.2025.100989","DOIUrl":"10.1016/j.jsamd.2025.100989","url":null,"abstract":"<div><div>Organic photodetectors (OPDs) have received considerable attention due to their advantages over traditional inorganic alternatives. Their attributes, including cost-effective processing, tunable bandgap capabilities, flexibility, and scalability, position them as strong candidates for the next generation of photodetection technology. In this study, we introduce photomultiplication-type organic photodetectors (PM-OPDs) utilizing non-fullerene acceptors (NFAs) with switchable functionalities. These OPDs can transition between narrowband and broadband detection modes depending on the applied bias magnitude. Additionally, the incorporation of NFAs extends the spectral response of the OPDs into the near-infrared range. In narrowband mode, the device demonstrates external quantum efficiencies exceeding 100 % at two peak wavelengths of 410 nm and 900 nm under low biases of ±0.3 V. When the bias is increased beyond 0.5 V, the PM-OPD transitions to broadband detection mode, encompassing a wide spectral range from 300 nm to 1000 nm. This impressive dual-mode detection capability is achieved without the need for an external optical filter or a trans-impedance amplifier, thereby simplifying the device design and reducing overall instrumentation requirements for various applications. The ability to switch between narrowband and broadband modes offers significant advantages in fields such as facial recognition, health monitoring, 3D sensing, spectroscopic applications, and optical communication. This research highlights the potential of bias-switchable PM-OPDs based on NFAs for advancing the next generation of photodetection systems.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100989"},"PeriodicalIF":6.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922510","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":"Structural and shielding properties of P(VDF-HFP)-Bi2O3 multilayered polymer composites","authors":"Jureeporn Yuennan ,&nbsp;Chaiyut Nateethorn ,&nbsp;Phatthira Samakphong ,&nbsp;Ratchaneewan Siri ,&nbsp;Nikruesong Tohluebaji ,&nbsp;Ghulam Abbas Ashraf ,&nbsp;Aphinrat Khanklaeo ,&nbsp;Phongpichit Channuie","doi":"10.1016/j.jsamd.2025.100990","DOIUrl":"10.1016/j.jsamd.2025.100990","url":null,"abstract":"<div><div>Flexible, lead-free Bi₂O₃/poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] composite films were developed as sustainable X-ray shielding materials for medical and industrial applications. Films with Bi₂O₃ loadings of 5–50 wt% were fabricated via solution casting and characterized using SEM, AFM, XRD, FTIR, and TGA to assess surface morphology, crystallinity, thermal stability, and radiation attenuation. Mechanical testing and X-ray attenuation measurements at 60 and 80 kVp revealed a clear trade-off between shielding efficiency and mechanical flexibility. Among all compositions, 20 wt% Bi₂O₃offered the most balanced performance, with a tensile strength of 10.7 ± 0.1 MPa, elongation at break of 4.7 ± 0.9 %, crystallinity of 81.99 %, hydrophobicity (water contact angle) of 120.46 ± 0.64°, 88.0 ± 0.1 % attenuation at 60 kVp (four-sheet configuration), and an enhanced maximum degradation temperature (T_max) of 480.13 °C. Higher filler loadings improved attenuation up to 92.0 ± 0.2 % but substantially reduced flexibility, while lower loadings preserved mechanical properties but compromised shielding. These results demonstrate that optimized Bi₂O₃/P(VDF-HFP) composites can deliver lightweight, flexible, and environmentally friendly alternatives to lead-based shielding, with tunable performance for specific application needs.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100990"},"PeriodicalIF":6.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144913628","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":"Efficient photocatalytic degradation of indigo carmine dye by CoFe2O4@g-C3N4 nanocomposite","authors":"Osamah Aldaghri","doi":"10.1016/j.jsamd.2025.100988","DOIUrl":"10.1016/j.jsamd.2025.100988","url":null,"abstract":"<div><div>Semiconductor-based photocatalysts are potential candidates for efficiently controlling pollution and reducing noxious organic contaminants from wastewater. The present research is devoted to fabricating a semiconducting nanocomposite material for the photodegradation of indigo carmine (IC) as a model organic pollutant. A facile eco-friendly method was adopted to synthesize cobalt ferrite nanoparticles (CoFe₂O₄) from their precursors using <em>Pimpinella anisum</em> extract as a reducing and capping agent and then coupled to graphitic carbon nitride (g-C₃N₄) to achieve CoFe₂O₄@g-C₃N₄ composite. X-ray diffraction analysis confirmed the formation of both phases in the composite, with a mean crystallite size (≈29 nm) for CoFe₂O₄. In contrast, the chemical composition obtained by EDS and XPS techniques revealed the presence of Co, Fe, O, C, and N. Consequently, the CoFe₂O₄@g-C₃N₄ heterostructure reduced the indirect band gap from 2.82 to 2.33 eV, thereby improving visible-light absorption. The optical band gap of pure CoFe nanoparticles was found to be ∼3.20 eV, which is more direct and increases the surface area to ≈59 cm². g⁻¹. The CoFe₂O₄, g-C₃N₄, and CoFe₂O₄@g-C₃N₄ were tested for the degradation of the IC under visible light illumination. The nanocomposite exhibits excellent photocatalytic performance towards the IC degradation, reaching 100 % within 60 min. The synergism of CoFe₂O₄ and g-C₃N₄ within the CoFe₂O₄@g-C₃N₄ heterostructure resulted in a lessened energy band gap, hindered electron/hole pair recombination, and improved both electrons and holes viability for the photodegradation through the formation of active radicals, and consequently an enhancement of dye photodegradation.</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100988"},"PeriodicalIF":6.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144932385","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 synthesis of g-C3N4 nanosheets homojunction for enhanced photocatalytic oxygen reduction reaction","authors":"Dongying Wang ,&nbsp;Shulan Pu ,&nbsp;Yong Yang ,&nbsp;Sijia Hu ,&nbsp;Jin Zhong Zhang ,&nbsp;Yan Sun","doi":"10.1016/j.jsamd.2025.100991","DOIUrl":"10.1016/j.jsamd.2025.100991","url":null,"abstract":"<div><div>A g-C₃N₄ homojunction was fabricated by thermal etching a mixture of two bulk phases of g-C₃N₄ derived from various precursors in a 1:1 mass ratio. A larger specific surface area of 144.2 m² g⁻¹ was obtained and offered more reaction active sites for photocatalytic production of hydrogen peroxide (H₂O₂). Meanwhile, the built-in electric field formed by the homojunction structure facilitated the separation of charge carriers and prolonged lifetime, and the charge transfer pathway of g-C₃N₄ homojunction aligned with a type-Ⅱ heterojunction mode. Within 60 min, the H₂O₂ yield and tetracycline degradation efficiency of g-C₃N₄ homojunction reached 414.6 μM and 82.1%, respectively, which were significantly higher than those of the two bulk phases of g-C₃N₄. In addition, the photocatalytic reaction route of H₂O₂ production was confirmed as a continuous single-electron oxygen reduction reaction process. This study introduces a new way to practically apply g-C₃N₄-based materials in H₂O₂ synthesis</div></div>","PeriodicalId":17219,"journal":{"name":"Journal of Science: Advanced Materials and Devices","volume":"10 4","pages":"Article 100991"},"PeriodicalIF":6.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989350","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}