Materials Research Bulletin最新文献_第7页

Exploring optical properties and ratiometric temperature sensing via PL intensity and lifetime in Eu0.025Tb0.975(2-CIBA)3Phen Eu0.025Tb0.975(2-CIBA)3Phen中PL强度和寿命的光学性质和比例温度传感研究

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-07 DOI: 10.1016/j.materresbull.2025.113940

Diksha Baloni , Anjana Yadav , Shruti Sajwan , Sunil Kumar Singh , Akhilesh Kumar Singh

{"title":"Exploring optical properties and ratiometric temperature sensing via PL intensity and lifetime in Eu0.025Tb0.975(2-CIBA)3Phen","authors":"Diksha Baloni , Anjana Yadav , Shruti Sajwan , Sunil Kumar Singh , Akhilesh Kumar Singh","doi":"10.1016/j.materresbull.2025.113940","DOIUrl":"10.1016/j.materresbull.2025.113940","url":null,"abstract":"<div><div>In this work, Eu(2-CIBA)<sub>3</sub>Phen, Tb(2-CIBA)<sub>3</sub>Phen, and Eu<sub>0.025</sub>Tb<sub>0.975</sub>(2-CIBA)<sub>3</sub>Phen complexes were synthesized and investigated for their optical properties. With increasing temperature, the PL spectra of Eu<sub>0.025</sub>Tb<sub>0.975</sub>(2-CIBA)<sub>3</sub>Phen recorded between 78–298 K demonstrate a tunable emission color ranging from greenish to reddish. The lifetime of the <sup>5</sup>D<sub>4</sub> state of Tb<sup>3+</sup> systematically decreases whilst that of the <sup>5</sup>D<sub>0</sub> state of Eu<sup>3+</sup> remains nearly temperature independent. A self-referenced ratiometric parameter, <em>I</em><sub>612</sub>/<em>I</em><sub>543</sub>, was employed for temperature sensing, yielding a maximum relative temperature sensitivity of 2.35 % K<sup>-1</sup> at 298 K. Additionally, the temperature-sensing behavior was examined using the lifetime ratio of the <sup>5</sup>D<sub>0</sub> state of Eu<sup>3+</sup> to the <sup>5</sup>D<sub>4</sub> state of Tb<sup>3+</sup>, which yielded <strong>c</strong>onsistent results. Notably, the combined use of ratiometric PL intensity and lifetime ratio for temperature sensing has not previously been explored for a lanthanide complex. Furthermore, the Eu<sub>0.025</sub>Tb<sub>0.975</sub>(2-CIBA)<sub>3</sub>Phen possesses high PL intensity and PLQY that make this complex system a reliable, self-calibrated thermometer.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113940"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A dual-mode magnetic–luminescent hybrid: Fe3O4 + Y2O3:Yb3+,Tm3+ decorated with a Eu3+β-diketonate complex Fe3O4 + Y2O3:Yb3+，Tm3+饰有Eu3+β-二酮酸配合物的双模磁发光杂化体

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-09 DOI: 10.1016/j.materresbull.2025.113943

André Lucas Costa , Clara Johanna Pacheco , Julieth Caro Patiño , Angelo Márcio de Souza Gomes , Flavia Artizzu , Sergio Antonio Marques Lima , Airton Germano Bispo-Jr , Ana Maria Pires

{"title":"A dual-mode magnetic–luminescent hybrid: Fe3O4 + Y2O3:Yb3+,Tm3+ decorated with a Eu3+β-diketonate complex","authors":"André Lucas Costa , Clara Johanna Pacheco , Julieth Caro Patiño , Angelo Márcio de Souza Gomes , Flavia Artizzu , Sergio Antonio Marques Lima , Airton Germano Bispo-Jr , Ana Maria Pires","doi":"10.1016/j.materresbull.2025.113943","DOIUrl":"10.1016/j.materresbull.2025.113943","url":null,"abstract":"<div><div>We report the fabrication of multifunctional core@shell nanostructures integrating photonic and magnetic properties via a stepwise synthetic approach. The Fe<sub>3</sub>O<sub>4</sub> + Y<sub>2</sub>O<sub>3</sub>:Yb,Tm@SiO<sub>2</sub> hybrid was prepared through co-precipitation, homogeneous precipitation with urea, and silica coating, followed by functionalization with isocyanate groups. Subsequent coupling with 4-(aminomethyl)benzoic acid (pamba) enabled Eu<sup>3+</sup> coordination through carboxylate moieties. Finally, the β-diketonate ligand 1-(4-chlorophenyl)-4,4,4-trifluoro-1,3-butanedione (4-Cl-btfa) was coordinated to Eu<sup>3+</sup>, promoting efficient ligand-to-metal energy transfer. The resulting nanostructure exhibited a saturation magnetization of 0.58 emu g<sup>−1</sup> with negligible coercivity, consistent with related systems. Under 980 nm excitation (1500 mW), bright blue upconversion emission from Yb<sup>3+</sup>/Tm<sup>3+</sup> in the Y<sub>2</sub>O<sub>3</sub> matrix was observed. In contrast, ultraviolet excitation (335 nm) produced intense red emission with an absolute quantum yield of 12.7 %, arising from Eu<sup>3+</sup> β-diketonate complexes on the surface. These findings demonstrate tunable emission behavior depending on excitation wavelength and highlight the potential of rational core@shell assembly for multifunctional nanoplatforms.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113943"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tuning ceria-based nanomaterials: The effects of chemical potential and mineralizing agents on atmosphere-induced electrical resistance 调谐铈基纳米材料：化学势和矿化剂对大气感应电阻的影响

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-29 DOI: 10.1016/j.materresbull.2025.113987

H. Moreno , L.S.R. Rocha , G. Garcia , C. Macchi , M.A. Ponce , J.R. Sambrano , I.E. dell´Erba , A. Albuquerque , E. Longo , M.A. Ramirez , A.Z. Simões

{"title":"Tuning ceria-based nanomaterials: The effects of chemical potential and mineralizing agents on atmosphere-induced electrical resistance","authors":"H. Moreno , L.S.R. Rocha , G. Garcia , C. Macchi , M.A. Ponce , J.R. Sambrano , I.E. dell´Erba , A. Albuquerque , E. Longo , M.A. Ramirez , A.Z. Simões","doi":"10.1016/j.materresbull.2025.113987","DOIUrl":"10.1016/j.materresbull.2025.113987","url":null,"abstract":"<div><div>This study explores the electrical and physicochemical properties of CeO<sub>2</sub> thick films by combining theoretical simulations with experimental analyses under variable gas atmospheres. The films are prepared via screen printing, using particles synthesized through the microwave-assisted hydrothermal method with KOH and NaOH at concentrations of 2 and 4 M. KOH promotes higher nucleation rates, resulting in smaller particles with greater surface areas, whereas NaOH leads to fewer nucleation events and thus larger, less agglomerated particles. This trend is supported by the observed increase in the τ₁ lifetime, which rises from approximately 202 ps (NaOH 2 M) to about 219 ps (KOH 2 M), indicating a higher concentration of oxygen vacancies in the KOH-synthesized sample. In contrast, NaOH-based powders produce densely packed particles that form compact and uniform films. Consequently, the faster response times exhibited by the KOH-synthesized samples, compared to those synthesized with NaOH, reinforce their potential for application in gas sensing devices. Overall, the chemical potential plays a critical role in influencing response times by affecting charge carrier dynamics, enhancing surface reaction rates, stabilizing temperature effects, managing defect states, and facilitating chemical interactions.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113987"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Spark plasma sintering in MgB2 added with Ge-Te alloys 添加Ge-Te合金增强MgB2的火花等离子烧结

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-27 DOI: 10.1016/j.materresbull.2025.113982

D. Batalu , R. Svoboda , G.V. Aldica , V. Sandu , M.A. Grigoroscuta , A.M. Badea , C. Locovei , M. Enculescu , S. Popa , A. Kuncser , P. Badica

{"title":"Enhanced Spark plasma sintering in MgB2 added with Ge-Te alloys","authors":"D. Batalu , R. Svoboda , G.V. Aldica , V. Sandu , M.A. Grigoroscuta , A.M. Badea , C. Locovei , M. Enculescu , S. Popa , A. Kuncser , P. Badica","doi":"10.1016/j.materresbull.2025.113982","DOIUrl":"10.1016/j.materresbull.2025.113982","url":null,"abstract":"<div><div>Alloys (A) of crystalline Ge50Te50 and partially amorphous Ge20Te80 were added to MgB<sub>2</sub> superconductor. Samples with composition (MgB<sub>2</sub>)A<sub>0.01</sub> were <em>ex situ</em> spark plasma sintered (SPS) and characterized. Results are compared with pristine and Te ((MgB<sub>2</sub>)Te<sub>0.01</sub>) or Ge, ((MgB<sub>2</sub>)Ge<sub>0.01</sub>) added samples. Samples with Ge-Te alloys show the fastest densification rate of 3.4 to 5.2 times larger than for the other samples. Although there is a strong influence of Te, alloys synergistically contribute structural and microstructural development and superconducting properties as determined by magnetometry. The proposed methodology of densification curves analysis allows prediction of the final bulk density, MgO and MgB<sub>4</sub> amounts, the amount of carbon substituting boron and critical temperature. The alloys addition promotes MgB<sub>4</sub> formation and a slightly lower critical current density <em>J</em><sub>c</sub> for Ge50Te50. For Ge20Te80, <em>J</em><sub>c</sub> is approximately similar to pristine sample, while the highest <em>J</em><sub>c</sub> is for Te. Samples with Ge-Te have lower maximum pinning force values.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113982"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145939378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polarization-Driven Catalytic Mechanisms in Ferroelectric Materials for Wastewater Treatment: A Review 极化驱动铁电材料在废水处理中的催化机理研究进展

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-11 DOI: 10.1016/j.materresbull.2025.113945

Vaishali Gupta , Roopam Gaur , Satyendra Singh

{"title":"Polarization-Driven Catalytic Mechanisms in Ferroelectric Materials for Wastewater Treatment: A Review","authors":"Vaishali Gupta , Roopam Gaur , Satyendra Singh","doi":"10.1016/j.materresbull.2025.113945","DOIUrl":"10.1016/j.materresbull.2025.113945","url":null,"abstract":"<div><div>The polarization-driven charge separation in ferroelectric materials makes them promising photocatalysts or piezocatalysts when it comes to environmental remediation in terms of the treatment of wastewater originating from various sources. Because of the polarization switching property of ferroelectric materials, their catalytic behavior can be tuned or switched as per the requirements, rendering them as “smart catalysts”. Moreover, their band gaps can be engineered and tuned by appropriate doping. Some ferroelectrics also show visible light sensitivity towards catalysis. This review summarizes recent progress in the methods and techniques employed for photo-, piezo, and piezo-photocatalysis using ferroelectric materials for treating dye-contaminated wastewater, primarily originating from industries such as textiles, printing, cosmetics, and pharmaceuticals. The synthesis techniques, advances in polarization techniques, degradation efficiencies, various types of lead-free materials, challenges faced, and strategies to overcome these challenges for improved degradation of these organic pollutants are discussed in detail.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113945"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145841053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Surface-Energy-Assisted transfer of flexible VO2 metasurface for multifunctional thermal radiation control 用于多功能热辐射控制的柔性VO2超表面的表面能辅助转移

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-24 DOI: 10.1016/j.materresbull.2025.113977

Junwei Ma , Zheng Peng , Longjiang Deng , Wei Yan , Wu Wang , Yang Zhou , Peiheng Zhou , Jun Qin , Lei Bi

{"title":"Surface-Energy-Assisted transfer of flexible VO2 metasurface for multifunctional thermal radiation control","authors":"Junwei Ma , Zheng Peng , Longjiang Deng , Wei Yan , Wu Wang , Yang Zhou , Peiheng Zhou , Jun Qin , Lei Bi","doi":"10.1016/j.materresbull.2025.113977","DOIUrl":"10.1016/j.materresbull.2025.113977","url":null,"abstract":"<div><div>Flexible Vanadium dioxide (VO<sub>2</sub>) metasurfaces shows broad potential for thermal radiation control applications, such as adaptive camouflage and thermal management. However, conventional flexible transfer methods based on chemical etching and mechanical exfoliation suffer from structural damage and film erosion, leading to compromised thermal radiation modulation performance. To address these limitations, this study proposes a surface-energy-assisted transfer method utilizing hydrophobic-hydrophilic contrast and the van der Waals interface between MoS<sub>2</sub> and SiO<sub>2</sub>. This approach enables damage-free separation of VO<sub>2</sub> films from rigid substrates using only water, eliminating the attackes from chemical etchants and mechanical force. Using this method, we successfully transferred the centimeter-scale VO<sub>2</sub> films and metasurfaces onto flexible substrates. The measured mid-infrared emissivity (8–14 μm) of the flexible VO<sub>2</sub> films changes from 0.91 to 0.34 during the phase transition, demonstrating a negative differential thermal emission characteristic. Furthermore, we fabricated a flexible VO<sub>2</sub> metasurface exhibiting positive differential thermal emission achieving an emittance of 0.13 at low temperature and 0.58 at high temperature. This research provides a valuable transfer method for fabricating intelligent flexible devices.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113977"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145840990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Magnetically reduced graphene oxide-modified NiFe2O4/Bi2WO6 S-scheme photocatalyst for photodegradation of RhB under visible light 磁还原氧化石墨烯修饰NiFe2O4/Bi2WO6 s方案光催化剂在可见光下光降解RhB

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-26 DOI: 10.1016/j.materresbull.2025.113981

Yingying Zhang, Xiaowei Li

{"title":"Magnetically reduced graphene oxide-modified NiFe2O4/Bi2WO6 S-scheme photocatalyst for photodegradation of RhB under visible light","authors":"Yingying Zhang, Xiaowei Li","doi":"10.1016/j.materresbull.2025.113981","DOIUrl":"10.1016/j.materresbull.2025.113981","url":null,"abstract":"<div><div>The rapid development of industrial economies has intensified environmental pollution and energy shortages. In this study, a ternary magnetic S-scheme heterojunction photocatalyst, RGO/NiFe<sub>2</sub>O<sub>4</sub>/Bi<sub>2</sub>WO<sub>6</sub>, was synthesized via a one-pot solvothermal method. Results show that the incorporation of RGO/NiFe<sub>2</sub>O<sub>4</sub> significantly enhances the material's light absorption capacity and charge separation efficiency. The optimal composite achieved a 94.8% degradation rate of Rhodamine B within 60 min under visible-light irradiation, with a reaction rate 2.4 times that of pure Bi<sub>2</sub>WO<sub>6</sub>. The performance improvement is primarily attributed to the synergistic effect of RGO as an electron-conducting network and the S-scheme charge-transfer mechanism between NiFe<sub>2</sub>O<sub>4</sub> and Bi<sub>2</sub>WO<sub>6</sub>, which effectively promotes the spatial separation of electron-hole pairs while preserving strong redox potentials. Moreover, the magnetic property of NiFe<sub>2</sub>O<sub>4</sub> enables rapid catalyst recovery, highlighting the design superiority of integrating charge-transfer enhancement with magnetic recyclability in a ternary system.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113981"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Polyaniline-functionalized sulfur and nitrogen co-doped rGO: Toward sustainable, ultra-stable supercapacitors with superior energy density and high retention rate 聚苯胺功能化硫氮共掺杂氧化石墨烯：迈向具有优异能量密度和高保留率的可持续、超稳定超级电容器

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-19 DOI: 10.1016/j.materresbull.2025.113966

Sivakrishna Prakash , Roopasri Rajamany , Sophy Mariam Varghese , R.B. Rakhi , Yahya A. Ismail

{"title":"Polyaniline-functionalized sulfur and nitrogen co-doped rGO: Toward sustainable, ultra-stable supercapacitors with superior energy density and high retention rate","authors":"Sivakrishna Prakash , Roopasri Rajamany , Sophy Mariam Varghese , R.B. Rakhi , Yahya A. Ismail","doi":"10.1016/j.materresbull.2025.113966","DOIUrl":"10.1016/j.materresbull.2025.113966","url":null,"abstract":"<div><div>Designing supercapacitors with an optimal balance of energy density, power density, and cyclic stability is vital to address global energy challenges. Polyaniline (PANI) and reduced graphene oxide (rGO) are promising materials but exhibit limitations when used separately. We report a novel macromolecular system consisting of PANI covalently attached to sulfur- and nitrogen- co-doped rGO to achieve superior electrochemical performance. Covalent functionalization and heteroatom doping minimizes PANI degradation during repeated redox cycling while preventing rGO aggregation and maintaining high surface area. The material was characterized using FTIR, UV–Vis, FT-Raman, XPS, FESEM, and HRTEM. Electrochemical studies using a three-electrode system and a symmetric device demonstrated a high specific capacitance of 464 F g⁻¹ at a current density of 1 A g⁻¹, excellent cycling stability of 99.35 % after 5000 cycles, and remarkable rate capability of 96.34 % retention at 5 A g⁻¹. The device achieved an energy density of 41.28 Wh kg⁻¹ and a power density of 799.3 W kg⁻¹.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113966"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and spectroscopic analysis of terbium-based complexes exhibiting green light emission with auxiliary ligands for optoelectronic device 光电器件用辅助配体具有绿光发射的铽基配合物的合成与光谱分析

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-19 DOI: 10.1016/j.materresbull.2025.113967

Pooja Kaushik, Ashish Dahiya, Priti Boora Doon

{"title":"Synthesis and spectroscopic analysis of terbium-based complexes exhibiting green light emission with auxiliary ligands for optoelectronic device","authors":"Pooja Kaushik, Ashish Dahiya, Priti Boora Doon","doi":"10.1016/j.materresbull.2025.113967","DOIUrl":"10.1016/j.materresbull.2025.113967","url":null,"abstract":"<div><div>A series of five terbium(III) coordination complexes with the general molecular formula <strong>[Tb(L)₃(L′)]</strong>, where <em>L</em> = 5-(4-fluorophenyl)pyridine-3-carboxylate and L′ = neocuproine, 1,10-phenanthroline, 4,4′-dimethyl-2,2′-bipyridine, or 2,2′-bipyridine, were successfully synthesized. Comprehensive characterization through elemental analysis, NMR, FT-IR, SEM, TGA-DTA, and XRD confirmed their crystalline structure and notable thermal stability. The experimentally determined bandgap values were consistent with the calculated HOMO–LUMO energy separations. Photoluminescence studies revealed sharp emission peaks at 494, 547, 587, and 622 nm, corresponding to the ⁵D₄ → ⁷Fⱼ (<em>J</em> = 6–3) transitions, with the dominant green emission at 547 nm. Chromaticity analysis indicated color coordinates within the green region, while color purity and correlated color temperature (6371–8340 K) confirmed a cool greenish emission. These findings demonstrate the strong potential of the synthesized terbium complexes for utilization in efficient green-emitting photonic and optoelectronic devices.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113967"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145881051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Piezo-Fenton tandem catalysis of single-phase Bi2Fe4O9 nanosheets against Enterococcus faecalis biofilms in dentin canals 压电- fenton串联催化单相Bi2Fe4O9纳米片对牙本质管中粪肠球菌生物膜的作用

IF 5.7 3区材料科学

Materials Research Bulletin Pub Date : 2026-04-01 Epub Date: 2025-12-10 DOI: 10.1016/j.materresbull.2025.113946

Lixiang Jian , Zhenyue Yu , Xiao Wu , Chunlin Zhao , Cong Lin , Min Gao , Xinan Chen , Yi Lin

{"title":"Piezo-Fenton tandem catalysis of single-phase Bi2Fe4O9 nanosheets against Enterococcus faecalis biofilms in dentin canals","authors":"Lixiang Jian , Zhenyue Yu , Xiao Wu , Chunlin Zhao , Cong Lin , Min Gao , Xinan Chen , Yi Lin","doi":"10.1016/j.materresbull.2025.113946","DOIUrl":"10.1016/j.materresbull.2025.113946","url":null,"abstract":"<div><div><em>Enterococcus faecalis</em> (<em>E. faecalis</em>) is one of the primary bacteria that causes endodontic failure. The formation of biofilms in root canals makes it resistant to common antimicrobial irrigants. Here, single-phase Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub> (BFO) nanosheets are used to effectively eradicate <em>E. faecalis</em> biofilms <em>via</em> piezo-Fenton tandem catalysis. The nanosheet morphology endows BFO with excellent piezocatalytic ability, which boosts the production of H<sub>2</sub>O<sub>2</sub> under ultrasonic (US) stimuli. The <em>in-situ</em> generated H<sub>2</sub>O<sub>2</sub> further facilitates the iron-based Fenton reaction in BFO, thereby accelerating the destruction of membrane structures of <em>E. faecalis</em> biofilms. Moreover, the piezo-Fenton tandem catalysis only requires an US power of 60 W, which can be readily obtained <em>via</em> US irrigation during routine dental treatments. Accordingly, single-phase BFO nanosheets provide a practical and highly efficient approach for eradicating <em>E. faecalis</em> biofilms in dentin canals.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"197 ","pages":"Article 113946"},"PeriodicalIF":5.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0