Pub Date : 2025-02-08DOI: 10.1016/j.materresbull.2025.113350
Ashima Makhija, Sangeeta Kadyan, Manju Nain, Anil Ohlan, Sajjan Dahiya, R. Punia, A.S. Maan
The Ce³⁺-Sm³⁺ co-doped nanocomposite phosphors, MgO-La1-x-yCexSmyAlO3 (x = 0.009; y = 0 – 0.04), were synthesized via Pechini sol-gel method. XRD and Rietveld refinements corroborated the face-centered cubic crystal structure for MgO and rhombohedral structure for LaAlO₃. FESEM with EDAX revealed inhomogeneous grains with uniform elemental distribution. The optical bandgaps of the nanocomposites were found to range between 5.06 and 5.53 eV. Photoluminescence (PL) excitation and emission spectra, along with time-resolved PL, have been employed to investigate energy transfer behavior from Ce³⁺ to Sm³⁺. The energy transfer mechanism has been attributed to d-d interlinkages, with a transfer efficiency of ∼80% in the MgO-La0.951Ce0.009Sm0.04AlO3. The nanocomposite phosphor MgO-La0.961Ce0.009Sm0.03AlO3 exhibited maximum luminescence among the studied nanocomposites, even higher than the nanophosphor La0.961Ce0.009Sm0.03AlO3. Analysis of parameters, such as correlated color temperature (CCT) and CIE 1931 chromaticity coordinates, demonstrated its potential as a green-to-orange color-tunable cool phosphor, indicating its suitability for diverse photonic applications.
{"title":"Energy transfer in Ce-Sm co-doped in-situ synthesized nanocomposites: Unveiling structural, morphological and photoluminescent properties for enhanced luminescence","authors":"Ashima Makhija, Sangeeta Kadyan, Manju Nain, Anil Ohlan, Sajjan Dahiya, R. Punia, A.S. Maan","doi":"10.1016/j.materresbull.2025.113350","DOIUrl":"10.1016/j.materresbull.2025.113350","url":null,"abstract":"<div><div>The Ce³⁺-Sm³⁺ co-doped nanocomposite phosphors, MgO-La<sub>1-x-y</sub>Ce<sub>x</sub>Sm<sub>y</sub>AlO<sub>3</sub> (x = 0.009; y = 0 – 0.04), were synthesized via Pechini sol-gel method. XRD and Rietveld refinements corroborated the face-centered cubic crystal structure for MgO and rhombohedral structure for LaAlO₃. FESEM with EDAX revealed inhomogeneous grains with uniform elemental distribution. The optical bandgaps of the nanocomposites were found to range between 5.06 and 5.53 eV. Photoluminescence (PL) excitation and emission spectra, along with time-resolved PL, have been employed to investigate energy transfer behavior from Ce³⁺ to Sm³⁺. The energy transfer mechanism has been attributed to d-d interlinkages, with a transfer efficiency of ∼80% in the MgO-La<sub>0.951</sub>Ce<sub>0.009</sub>Sm<sub>0.04</sub>AlO<sub>3</sub>. The nanocomposite phosphor MgO-La<sub>0.961</sub>Ce<sub>0.009</sub>Sm<sub>0.03</sub>AlO<sub>3</sub> exhibited maximum luminescence among the studied nanocomposites, even higher than the nanophosphor La<sub>0.961</sub>Ce<sub>0.009</sub>Sm<sub>0.03</sub>AlO<sub>3</sub>. Analysis of parameters, such as correlated color temperature (CCT) and CIE 1931 chromaticity coordinates, demonstrated its potential as a green-to-orange color-tunable cool phosphor, indicating its suitability for diverse photonic applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113350"},"PeriodicalIF":5.3,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143419139","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}
Pub Date : 2025-02-08DOI: 10.1016/j.materresbull.2025.113351
Leena V. Hublikar , Sharanabasava V. Ganachari , Fatheali A. Shilar , Narasimha Raghavendra
Advanced transition metal oxide nanomaterials are promising candidates and have attracted more and more interest. Due to their excellent charge transport capabilities, transition metal oxide nanoparticles (TiO2, ZnO, Fe2O3) have become important in advanced solar cell technology. This report discusses the importance of these materials in enhancing solar cell performance, whether individually or as components of composite structures, which significantly increase light absorption, charge carrier separation, and the overall efficiency of solar cells. These composite materials also enhance stability and durability, making them suitable for long-term renewable energy applications. The bandgap of transition metal oxides can be adjusted using doping, compound formation, and heterojunctions, which enhance their physical, electronic, and optical properties, especially visible light absorption. The heterojunctions of transition metal oxides/silicon are becoming a promising substitute for traditional p-n junctions, while perovskite solar cells. This review article elaborates synthesis, characterization, and prominent solar cell applications of transition metal oxide nanomaterials in solar cell fabrication. It offers the essential direction for turning scientific discoveries into useful applications and acts as a springboard for developing innovative nanostructures with improved performances.
{"title":"Recent advances in transition metal oxide nanomaterials for solar cell applications: A status review and technology perspectives","authors":"Leena V. Hublikar , Sharanabasava V. Ganachari , Fatheali A. Shilar , Narasimha Raghavendra","doi":"10.1016/j.materresbull.2025.113351","DOIUrl":"10.1016/j.materresbull.2025.113351","url":null,"abstract":"<div><div>Advanced transition metal oxide nanomaterials are promising candidates and have attracted more and more interest. Due to their excellent charge transport capabilities, transition metal oxide nanoparticles (TiO<sub>2</sub>, ZnO, Fe<sub>2</sub>O<sub>3</sub>) have become important in advanced solar cell technology. This report discusses the importance of these materials in enhancing solar cell performance, whether individually or as components of composite structures, which significantly increase light absorption, charge carrier separation, and the overall efficiency of solar cells. These composite materials also enhance stability and durability, making them suitable for long-term renewable energy applications. The bandgap of transition metal oxides can be adjusted using doping, compound formation, and heterojunctions, which enhance their physical, electronic, and optical properties, especially visible light absorption. The heterojunctions of transition metal oxides/silicon are becoming a promising substitute for traditional p-n junctions, while perovskite solar cells. This review article elaborates synthesis, characterization, and prominent solar cell applications of transition metal oxide nanomaterials in solar cell fabrication. It offers the essential direction for turning scientific discoveries into useful applications and acts as a springboard for developing innovative nanostructures with improved performances.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"187 ","pages":"Article 113351"},"PeriodicalIF":5.3,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143444165","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}
Pub Date : 2025-02-06DOI: 10.1016/j.materresbull.2025.113344
Hangxi Liu , Haorong Sun , Peng Zhao , Kangle Shang , Ming Fang , Xiaoli Tan , Long Yu , Bin Ma
Nitrite ions originate from various natural and anthropogenic sources and can cause health issues including methemoglobinemia and potential carcinogenic effects. As the nitrite in water has become an increasing threat to human health, the accurate evaluation of nitrite is urgently needed for environmental quality and safety management. In this paper, we designed a CTAB/SF5/GCE sensor, which exhibited an obvious enhancement compared to the pristine glassy carbon electrode (GCE). The morphology characterization confirmed the hexagonal nanosheets of SnS2 and the even distribution of Fe element. The energy band, Tafel plots, and EIS spectroscopy were employed to investigate the enhancement mechanism, demonstrating that improving charge transfer on the sensing interface is crucial in enhanced signals. Cyclic voltammetry (CV) was adopted as the electrochemical method to measure the nitrite in water and a sensitivity of 0.129 μA·μM−1 was exhibited in the range of 30–500 μM, and the limit of detection (LOD) was calculated to be 6.51 μM. The reliability including the repeatability, reproducibility, and stability of this sensor were estimated and showed satisfactory results. The test in real samples and the assessment of interfering substances showed the CTAB/SF5/GCE possesses a large potential in the practical application of electrochemical sensing of nitrite.
{"title":"Enhanced electrochemical detection of nitrite ions by CTAB-modified hexagonal Fe-doped SnS2 nanosheets in water","authors":"Hangxi Liu , Haorong Sun , Peng Zhao , Kangle Shang , Ming Fang , Xiaoli Tan , Long Yu , Bin Ma","doi":"10.1016/j.materresbull.2025.113344","DOIUrl":"10.1016/j.materresbull.2025.113344","url":null,"abstract":"<div><div>Nitrite ions originate from various natural and anthropogenic sources and can cause health issues including methemoglobinemia and potential carcinogenic effects. As the nitrite in water has become an increasing threat to human health, the accurate evaluation of nitrite is urgently needed for environmental quality and safety management. In this paper, we designed a CTAB/SF5/GCE sensor, which exhibited an obvious enhancement compared to the pristine glassy carbon electrode (GCE). The morphology characterization confirmed the hexagonal nanosheets of SnS<sub>2</sub> and the even distribution of Fe element. The energy band, Tafel plots, and EIS spectroscopy were employed to investigate the enhancement mechanism, demonstrating that improving charge transfer on the sensing interface is crucial in enhanced signals. Cyclic voltammetry (CV) was adopted as the electrochemical method to measure the nitrite in water and a sensitivity of 0.129 μA·μM<sup>−1</sup> was exhibited in the range of 30–500 μM, and the limit of detection (LOD) was calculated to be 6.51 μM. The reliability including the repeatability, reproducibility, and stability of this sensor were estimated and showed satisfactory results. The test in real samples and the assessment of interfering substances showed the CTAB/SF5/GCE possesses a large potential in the practical application of electrochemical sensing of nitrite.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113344"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143372957","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}
Pub Date : 2025-02-06DOI: 10.1016/j.materresbull.2025.113348
Shruti Kaushik, Prakash Chand, Swati Sharma
The present work reported a sustainable zeolitic imidazolate framework-67 in redox additive electrolyte with ultrahigh capacitance and superior energy & power density as potential electrode materials for energy storage applications. The interest stems from its unique combination of desirable characteristics and reveals novel high-performance supercapacitors (SCs). The work employs redox additive electrolyte (RAE), specifically 0.08 M [K3(Fe(CN)6)] in 6 M KOH. When synthesized dodecahedral structured material was tested in a 3-electrode (3E) setup, it presented an ultrahigh specific capacitance (CS) of 8307.38 Fg-1 at a current density of 2 Ag-1 and a worthy cycling performance with 88.25% initial capacitance retention after 10,000 cycles. The asymmetric supercapacitor device (ASSC) fabricated shows impressive energy density (E), reaching 49.80 Whkg-1 at a current density of 4 Ag-1 with an exceptional CS of 917.83 Fg-1. Remarkably, it also delivers a high power density (P) of 1361.38 Wkg-1 at the same current density. The ASSC devices showed outstanding stability that stays almost 90% of the initial capacitance even after 10,000 charge-discharge cycles at an ultrahigh current density of 80 Ag-1 along with good columbic efficiency. The wide potential window, ranging from 0.0 to 1.6 V, further increases their potential applications. In essence, this work paves the way for a new generation of supercapacitors by combining electrodes with a tailored electrolyte, achieving exceptional E and P alongside remarkable stability.
{"title":"Nanoarchitectonics for ultrahigh capacitance with superior energy and power density of sustainable zeolitic imidazolate framework-67 in redox additive electrolyte","authors":"Shruti Kaushik, Prakash Chand, Swati Sharma","doi":"10.1016/j.materresbull.2025.113348","DOIUrl":"10.1016/j.materresbull.2025.113348","url":null,"abstract":"<div><div>The present work reported a sustainable zeolitic imidazolate framework-67 in redox additive electrolyte with ultrahigh capacitance and superior energy & power density as potential electrode materials for energy storage applications. The interest stems from its unique combination of desirable characteristics and reveals novel high-performance supercapacitors (SCs). The work employs redox additive electrolyte (RAE), specifically 0.08 M [K<sub>3</sub>(Fe(CN)<sub>6</sub>)] in 6 M KOH. When synthesized dodecahedral structured material was tested in a 3-electrode (3E) setup, it presented an ultrahigh specific capacitance (C<sub>S</sub>) of 8307.38 Fg<sup>-1</sup> at a current density of 2 Ag<sup>-1</sup> and a worthy cycling performance with 88.25% initial capacitance retention after 10,000 cycles. The asymmetric supercapacitor device (ASSC) fabricated shows impressive energy density (E), reaching 49.80 Whkg<sup>-1</sup> at a current density of 4 Ag<sup>-1</sup> with an exceptional C<sub>S</sub> of 917.83 Fg<sup>-1</sup>. Remarkably, it also delivers a high power density (P) of 1361.38 Wkg<sup>-1</sup> at the same current density. The ASSC devices showed outstanding stability that stays almost 90% of the initial capacitance even after 10,000 charge-discharge cycles at an ultrahigh current density of 80 Ag<sup>-1</sup> along with good columbic efficiency. The wide potential window, ranging from 0.0 to 1.6 V, further increases their potential applications. In essence, this work paves the way for a new generation of supercapacitors by combining electrodes with a tailored electrolyte, achieving exceptional E and P alongside remarkable stability.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113348"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143386496","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}
Pub Date : 2025-02-06DOI: 10.1016/j.materresbull.2025.113349
Bogdan I. Lazoryak , Alexei A. Belik , Eldar M. Gallyamov , Vladimir V. Titkov , Sergey Yu. Stefanovich , Valeria N. Maragaeva , Dmitry A. Spassky , Alexader V. Mosunov , Oksana V. Baryshnikova , Dina V. Deyneko
Ca9−xSrxIn(VO4)7:Eu3+ (0 ≤ х ≤ 9) solid solutions with the β-Ca3(PO4)2-type structure were prepared using a standard solid-state method. The combination of the X-ray diffraction and second harmonic generation methods revealed that Ca9−xSrxIn(VO4)7 have a non-centrosymmetric structure. The existence of a reversible phase transition ferroelectric-paraelectric was established. The substitution of Ca2+ ions by large Sr2+ ions is accompanied by record linear expansion of the unit cell volume. The magnitude of the SHG signal lowers with increasing Sr2+ concentration. The concentration behavior of Eu3+ photoluminescence shows a non-linear dependence, with the maximum at x = 4.5. The PL intensity under 465 nm excitation is higher (in 4 times) in relation to the 395 nm. The obtained PL spectra show ultra-narrow intensive red emission (FWHM = 5 nm). The color coordinates completely match with red standard. The obtained phosphors can be used for improvement of the CRI in wLEDs.
{"title":"Structure-properties correlations in whitlockite-type ultra-narrow red phosphors Ca9−xSrxIn(VO4)7","authors":"Bogdan I. Lazoryak , Alexei A. Belik , Eldar M. Gallyamov , Vladimir V. Titkov , Sergey Yu. Stefanovich , Valeria N. Maragaeva , Dmitry A. Spassky , Alexader V. Mosunov , Oksana V. Baryshnikova , Dina V. Deyneko","doi":"10.1016/j.materresbull.2025.113349","DOIUrl":"10.1016/j.materresbull.2025.113349","url":null,"abstract":"<div><div>Ca<sub>9</sub><sub>−</sub><em><sub>x</sub></em>Sr<em><sub>x</sub></em>In(VO<sub>4</sub>)<sub>7</sub>:Eu<sup>3+</sup> (0 <em>≤ х</em> ≤ 9) solid solutions with the β-Ca<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub>-type structure were prepared using a standard solid-state method. The combination of the X-ray diffraction and second harmonic generation methods revealed that Ca<sub>9</sub><sub>−</sub><em><sub>x</sub></em>Sr<em><sub>x</sub></em>In(VO<sub>4</sub>)<sub>7</sub> have a non-centrosymmetric structure. The existence of a reversible phase transition ferroelectric-paraelectric was established. The substitution of Ca<sup>2+</sup> ions by large Sr<sup>2+</sup> ions is accompanied by record linear expansion of the unit cell volume. The magnitude of the SHG signal lowers with increasing Sr<sup>2+</sup> concentration. The concentration behavior of Eu<sup>3+</sup> photoluminescence shows a non-linear dependence, with the maximum at <em>x</em> = 4.5. The PL intensity under 465 nm excitation is higher (in 4 times) in relation to the 395 nm. The obtained PL spectra show ultra-narrow intensive red emission (FWHM = 5 nm). The color coordinates completely match with red standard. The obtained phosphors can be used for improvement of the CRI in wLEDs.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113349"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377018","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}
Pub Date : 2025-02-06DOI: 10.1016/j.materresbull.2025.113332
Ruowei He , Zhihang Jin , Xuanheng Chen , Wenhao Zhu, Anling Tong, Yang Wang, Weihai Sun, Jihuai Wu
CsPbBr3 perovskite solar cells (PSCs) have garnered widespread attention because of their remarkable environmental resistance and distinctive photoelectric properties. However, the presence of defects in the bulk perovskite grains and the ETL/PVK interface leads to significant non-radiative recombination, compromising the photoelectric performance and hindering further improvements of the devices. In this study, we present an interface engineering utilizing potassium iodide (KI) as an ETL/PVK interface modifier to improve perovskite films quality and modify the interface. The introduction of KI was observed to passivate interfacial defects and optimize energy levels. Additionally, KI plays a crucial role in reducing defects within perovskite films, particularly X vacancies, and optimizing morphology. Consequently, the device based on the KI-SnO2 attains a champion PCE of 9.67 % with an outstanding VOC of 1.60 V. Meanwhile, the devices demonstrate excellent stability as no performance degradation was observed after being stored in ambient conditions for 30 days.
{"title":"Interface engineering with KI modifier enhances performance of CsPbBr3 perovskite solar cells","authors":"Ruowei He , Zhihang Jin , Xuanheng Chen , Wenhao Zhu, Anling Tong, Yang Wang, Weihai Sun, Jihuai Wu","doi":"10.1016/j.materresbull.2025.113332","DOIUrl":"10.1016/j.materresbull.2025.113332","url":null,"abstract":"<div><div>CsPbBr<sub>3</sub> perovskite solar cells (PSCs) have garnered widespread attention because of their remarkable environmental resistance and distinctive photoelectric properties. However, the presence of defects in the bulk perovskite grains and the ETL/PVK interface leads to significant non-radiative recombination, compromising the photoelectric performance and hindering further improvements of the devices. In this study, we present an interface engineering utilizing potassium iodide (KI) as an ETL/PVK interface modifier to improve perovskite films quality and modify the interface. The introduction of KI was observed to passivate interfacial defects and optimize energy levels. Additionally, KI plays a crucial role in reducing defects within perovskite films, particularly X vacancies, and optimizing morphology. Consequently, the device based on the KI-SnO<sub>2</sub> attains a champion PCE of 9.67 % with an outstanding V<sub>OC</sub> of 1.60 V. Meanwhile, the devices demonstrate excellent stability as no performance degradation was observed after being stored in ambient conditions for 30 days.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113332"},"PeriodicalIF":5.3,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143349492","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}
Pub Date : 2025-02-04DOI: 10.1016/j.materresbull.2025.113346
Mohammad Gholinejad , Soma Mohammadi , Mahboobe Eskandari , M.Sansano José
Two types of Nickel nano-prism containing a ppm level of palladium atoms were prepared and their physical morphology and prism-like structure were identified. Catalytic investigation of these novel bimetallic nano-prisms showed that Pd on amine-modified (Ni@NH2-Pd NPr) displayed higher efficiency than one-pot prepared NiPd NPr in reductions of nitroarenes and Suzuki–Miyaura coupling reaction in aqueous media. Using Ni@NH2-Pd NPr with ppm levels of Pd (8 ppm), a variety of aromatic nitro compounds were reduced to amines in very short reaction times and excellent yields. Also, a synergistic effect between ppm of Pd (8 ppm) and Ni NPr was observed in the Suzuki reaction, and different aryl bromides were successfully used as starters in the Suzuki–Miyaura coupling reaction. The catalyst brings out high TON's up to 9090 with respect to Pd species, and recyclability and stability of the catalyst were proved.
{"title":"Nickel nanoprism containing ppm level of Pd catalysis of reduction and Suzuki-Miyaura reactions","authors":"Mohammad Gholinejad , Soma Mohammadi , Mahboobe Eskandari , M.Sansano José","doi":"10.1016/j.materresbull.2025.113346","DOIUrl":"10.1016/j.materresbull.2025.113346","url":null,"abstract":"<div><div>Two types of Nickel nano-prism containing a ppm level of palladium atoms were prepared and their physical morphology and prism-like structure were identified. Catalytic investigation of these novel bimetallic nano-prisms showed that Pd on amine-modified (Ni@NH<sub>2</sub>-Pd NPr) displayed higher efficiency than one-pot prepared NiPd NPr in reductions of nitroarenes and Suzuki–Miyaura coupling reaction in aqueous media. Using Ni@NH<sub>2</sub>-Pd NPr with ppm levels of Pd (8 ppm), a variety of aromatic nitro compounds were reduced to amines in very short reaction times and excellent yields. Also, a synergistic effect between ppm of Pd (8 ppm) and Ni NPr was observed in the Suzuki reaction, and different aryl bromides were successfully used as starters in the Suzuki–Miyaura coupling reaction. The catalyst brings out high TON's up to 9090 with respect to Pd species, and recyclability and stability of the catalyst were proved.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113346"},"PeriodicalIF":5.3,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377016","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}
Pub Date : 2025-02-03DOI: 10.1016/j.materresbull.2025.113345
Ali Valizadeh , Aboulfazl Mirzapoor , Zahra Hallaji , Mahtab Jahanshah Talab , Bijan Ranjbar
Investigation of nanoparticle (NP)-protein interactions is crucial, as it provides critical insights into the behavior of NPs within biological systems. In this study, magnetite nanoparticles (Fe3O4 NPs) were coated with polyethylene glycol 400 (PEG400) using a novel modified chemical co-precipitation method. The structural, morphological, and magnetic properties of Fe3O4-PEG400 NPs were characterized. The NPs show superparamagnetism, very small size, and high colloidal stability. After that, the effect of Fe3O4-PEG400 NPs was investigated on proteins (human serum albumin: HSA and lysozyme: Lyso) and cells (fibroblast) using fluorescence spectroscopy, circular dichroism (CD) spectropolarimetry, and MTT assay. Results showed minimal alteration in the secondary structure of proteins but the tertiary structure of proteins shows some flexibility. Moreover, the cytotoxicity test indicates Fe3O4-PEG400 NPs show better biocompatibility than Fe3O4 NPs and has an IC50 of 65 µg/mL. In summary, the biocompatibility, stability, and superparamagnetism of Fe3O4-PEG400 NPs enhance their potential for biomedical applications.
{"title":"Synthesis of superparamagnetic Fe3O4-PEG400 nanoparticles: Investigation of interaction with proteins and toxicity on cells","authors":"Ali Valizadeh , Aboulfazl Mirzapoor , Zahra Hallaji , Mahtab Jahanshah Talab , Bijan Ranjbar","doi":"10.1016/j.materresbull.2025.113345","DOIUrl":"10.1016/j.materresbull.2025.113345","url":null,"abstract":"<div><div>Investigation of nanoparticle (NP)-protein interactions is crucial, as it provides critical insights into the behavior of NPs within biological systems. In this study, magnetite nanoparticles (Fe<sub>3</sub>O<sub>4</sub> NPs) were coated with polyethylene glycol 400 (PEG400) using a novel modified chemical co-precipitation method. The structural, morphological, and magnetic properties of Fe<sub>3</sub>O<sub>4</sub>-PEG400 NPs were characterized. The NPs show superparamagnetism, very small size, and high colloidal stability. After that, the effect of Fe<sub>3</sub>O<sub>4</sub>-PEG400 NPs was investigated on proteins (human serum albumin: HSA and lysozyme: Lyso) and cells (fibroblast) using fluorescence spectroscopy, circular dichroism (CD) spectropolarimetry, and MTT assay. Results showed minimal alteration in the secondary structure of proteins but the tertiary structure of proteins shows some flexibility. Moreover, the cytotoxicity test indicates Fe<sub>3</sub>O<sub>4</sub>-PEG400 NPs show better biocompatibility than Fe<sub>3</sub>O<sub>4</sub> NPs and has an IC<sub>50</sub> of 65 µg/mL. In summary, the biocompatibility, stability, and superparamagnetism of Fe<sub>3</sub>O<sub>4</sub>-PEG400 NPs enhance their potential for biomedical applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113345"},"PeriodicalIF":5.3,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143395254","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}
Fast charging, large storage, and efficient energy recovery are key to sustainable energy systems. Lithium-ion capacitors (LICs), combining the energy density of lithium-ion batteries (LIBs) and the power density of supercapacitors (SCs), offer a promising solution. This study introduces highly porous activated carbon from silkworm pupae waste (ACPP) for high-performance energy storage. ACPP was synthesized using hydrothermal carbonization in acetic acid media and subsequently activated with potassium carbonate, yielding a 2,476 m²/g surface area and 1.48 cm³/g pore volume. ACPP achieved a specific capacitance of 412 F/g for SCs and a discharge capacity of 969.2 mAh/g for LIBs, significantly outperforming commercial graphite. The ACPP//ACPP LIC device delivered 65 Wh/kg energy density, 260 W/kg power density, and retained over 80 % capacity after 10,000 cycles. This work highlights a sustainable approach to energy storage by upcycling waste material, reducing carbon emissions, and improving LIC performance.
{"title":"Versatile porous activated carbon from silkworm pupae waste for electrochemical energy storage systems","authors":"Saran Youngjan , Chonticha Rajrujithong , Vichuda Sattayarut , Jakkapop Phanthasri , Kajornsak Faungnawakij , Panitan Kewcharoenwong , Rattabal Khunphonoi , Khongvit Prasitnok , Aphinan Saengsrichan , Issaraporn Rakngam , Weradesh Sangkhun , Sopon Butcha , Chalathorn Chanthad , Pongtanawat Khemthong","doi":"10.1016/j.materresbull.2025.113347","DOIUrl":"10.1016/j.materresbull.2025.113347","url":null,"abstract":"<div><div>Fast charging, large storage, and efficient energy recovery are key to sustainable energy systems. Lithium-ion capacitors (LICs), combining the energy density of lithium-ion batteries (LIBs) and the power density of supercapacitors (SCs), offer a promising solution. This study introduces highly porous activated carbon from silkworm pupae waste (ACPP) for high-performance energy storage. ACPP was synthesized using hydrothermal carbonization in acetic acid media and subsequently activated with potassium carbonate, yielding a 2,476 m²/g surface area and 1.48 cm³/g pore volume. ACPP achieved a specific capacitance of 412 F/g for SCs and a discharge capacity of 969.2 mAh/g for LIBs, significantly outperforming commercial graphite. The ACPP//ACPP LIC device delivered 65 Wh/kg energy density, 260 W/kg power density, and retained over 80 % capacity after 10,000 cycles. This work highlights a sustainable approach to energy storage by upcycling waste material, reducing carbon emissions, and improving LIC performance.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113347"},"PeriodicalIF":5.3,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143377017","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}
Electroless-plated cobalt alloys with tungsten typically exceeding 5 at.% are the common barrier materials for copper metallization. As cobalt is a new interconnect material for advanced microchips, it is worth studying the advanced cobalt-interconnect metallization process that involves extremely diluted cobalt-tungsten (CoW) alloys with an eliminated impurity resistivity and enhanced electromigration reliability. To this aim, we fabricated three different CoW nanolines with 0.03, 0.06 and 0.11 at.% of W using an electroless process, and examined their electromigration behaviors under accelerated stressing conditions, using Co lines as a control. All three W contents, especially 0.06 at.%, mitigate Co electromigration. The mechanism for the electromigration mitigation is due to an improvement of the film's nanomechanical and surface wetting properties, as well as grain-structure refinements. A full account of the relationship between the film properties, grain structures and electromigration testing results is given, reasonably explaining the cause of the reliability optimization.
{"title":"Influence of trace tungsten contents on thin-film properties and electromigration behaviors of electroless-deposited cobalt interconnect lines","authors":"Jau-Shiung Fang , Ting-Hsun Su , Yi-Lung Cheng , Chun-Wei Huang , Giin-Shan Chen","doi":"10.1016/j.materresbull.2025.113343","DOIUrl":"10.1016/j.materresbull.2025.113343","url":null,"abstract":"<div><div>Electroless-plated cobalt alloys with tungsten typically exceeding 5 at.% are the common barrier materials for copper metallization. As cobalt is a new interconnect material for advanced microchips, it is worth studying the advanced cobalt-interconnect metallization process that involves extremely diluted cobalt-tungsten (CoW) alloys with an eliminated impurity resistivity and enhanced electromigration reliability. To this aim, we fabricated three different CoW nanolines with 0.03, 0.06 and 0.11 at.% of W using an electroless process, and examined their electromigration behaviors under accelerated stressing conditions, using Co lines as a control. All three W contents, especially 0.06 at.%, mitigate Co electromigration. The mechanism for the electromigration mitigation is due to an improvement of the film's nanomechanical and surface wetting properties, as well as grain-structure refinements. A full account of the relationship between the film properties, grain structures and electromigration testing results is given, reasonably explaining the cause of the reliability optimization.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"186 ","pages":"Article 113343"},"PeriodicalIF":5.3,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143132850","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}
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