Journal of Alloys and Compounds最新文献_第10页

Boosted ciprofloxacin photoelectrocatalytic degradation using 7CN-Fe derived from Fe-based MOF cage: Establishment of diversified ROS system and enhanced electron transfer

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180092

Yiming Qin, Linlin Qin, Yulong Liu, Na Cui, Xu Han, Wenyan Liang

{"title":"Boosted ciprofloxacin photoelectrocatalytic degradation using 7CN-Fe derived from Fe-based MOF cage: Establishment of diversified ROS system and enhanced electron transfer","authors":"Yiming Qin, Linlin Qin, Yulong Liu, Na Cui, Xu Han, Wenyan Liang","doi":"10.1016/j.jallcom.2025.180092","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180092","url":null,"abstract":"Treatment of pharmaceutical wastewater using efficient and energy-saving technology is urgently needed due to the universal existence of the emerging pollutants. Herein, 7CN-Fe, a carbon nanotube-restricted catalyst derived from MIL-101 (Fe), was prepared via co-calcination of the typical MOF cage with melamine. This process enabled the formation of Fe single-atom catalysts (Fe-SACs) and optimized the exposure of active sites for boosted ciprofloxacin (CIP) degradation in a photoelectrocatalytic system (PEC). The series of reactive sites, including CN-Fe, C-Fe, and Fe3-C, contributed to the enhanced CIP degradation, with the kinetics of CN-Fe being 23.7-fold higher than those of MIL-101(Fe) (increasing from 0.0051 to 0.121 min⁻¹). Electron spin resonance (ESR) and quenching tests revealed that •OH, •O2-, h+, 1O2, and high valent iron (Hv-Fe) are contributors to CIP degradation, and among them, •O2- and 1O2 dominated the decomposition process. Density functional theory (DFT) analysis results manifested that the CN-Fe, C-Fe and Fe3-C sites promoted the O2 adsorption and the O-O bond length had extended. Among them, the Fe3-C sites had the minimum O2 adsorption energy (Eads = -2.12 eV) and the O-O bond had the longest length (lO-O = 1.432 Å) after activation. Based on the influence factors evaluation, cycling test, the degradation of various antibiotics, and the detection of iron ion leaching, the 7CN-Fe catalysts exhibited a promising application potential with the traits of wide adaptability and stable structure. This work provides a route for photoelectrocatalytic degradation system establishment by optimized MIL-101 (Fe) and singlet oxygen generation for efficient removal of organic contaminants.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"102 4 Pt 1 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 piezoelectric properties of (Ba1-xCax)(Zr0.11Ti0.89)O3 by alternating current poling

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180144

Wenfeng Liu, Dongsheng Ran, Yi Zhao, Yan Liang, Ran Zhuo, Shengtao Li

{"title":"Enhanced piezoelectric properties of (Ba1-xCax)(Zr0.11Ti0.89)O3 by alternating current poling","authors":"Wenfeng Liu, Dongsheng Ran, Yi Zhao, Yan Liang, Ran Zhuo, Shengtao Li","doi":"10.1016/j.jallcom.2025.180144","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180144","url":null,"abstract":"Piezoceramics with both high d33 and large Smax/Emax are needed for various electronic devices. In the present study, Ba1-xCaxTi0.89Zr0.11O3 (x = 0.09, 0.12, 0.15, and 0.18) ceramics were designed and prepared by the solid-state reaction method. The piezoelectric properties of Ba1-xCaxTi0.89Zr0.11O3 ceramics poled by different poling conditions were investigated from the view of domain structure. The superior piezoelectric properties were achieved in the samples under AC poling at x = 0.12, with d33 of 405 pC/N and Smax/Emax of 620 pm/V, which had increased by 16% and 18% respectively over those under DC poling. Such results could be attributed to the higher domain wall density under AC poling, which was considered as an effective method to enhance the piezoelectric properties of lead-free piezoceramics, resulting in more attraction for both actuators and sensors. Moreover, the temperature stability of Ba1-xCaxTi0.89Zr0.11O3 ceramics was also studied in this work, which is beneficial for applications within a wide temperature range.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"72 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Coatings based on hybrid carbon-Platinum nano-ink for multifunctional applications

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180132

J.A. García-Merino, R. Villarroel, C. Mercado-Zúñiga, S. Morales-Bonilla

{"title":"Coatings based on hybrid carbon-Platinum nano-ink for multifunctional applications","authors":"J.A. García-Merino, R. Villarroel, C. Mercado-Zúñiga, S. Morales-Bonilla","doi":"10.1016/j.jallcom.2025.180132","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180132","url":null,"abstract":"In this study, carbon nanotubes (CNT) decorated with 30 wt% concentration of platinum nanoparticles (4 nm) were synthesized to form a stable nano-ink intended for coating applications. Morphological analyses revealed the multi-walled structure of CNT and the efficient attachment of Pt nanoparticles on their surfaces. The obtained ID/IG ratio of the Raman spectrum, which represents the defect density in graphitic structures, is 0.40, indicating good crystallinity of CNT. XRD and XPS revealed a dominant (111) crystallographic orientation for Pt nanoparticles and its metallic phase. The electrical properties of the 100 μm thickness CNT/Pt coatings were measured under both direct current and alternating current to study the complex internal electrical components, associated with capacitances and inductances. The thermoelectric characteristics, induced by the Joule effect, showed that electrical conductance increases with temperature (in the temperature range from 305 to 420 K), and was modeled using a heat transfer balance. Furthermore, when the coating was subjected to an alternating magnetic field, it exhibited behavior consistent with Faraday's law of induction, demonstrating fast-switching capabilities. Moreover, the nanohybrid coating did not exhibit induction heating effects when exposed to an alternating magnetic field. This behavior can be associated with the metallic nature of the hybrid film given by the Pt nanoparticles, characterized by their low magnetic permeability. Our results highlight the potential of CNT/Pt as a nanomaterial for controlling thermoelectric applications, with a dual facet of measuring oscillating magnetic fields without being affected by thermomagnetic effects.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"31 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

New fluorite-like lanthanum-europium molybdates with Nd5Mo3O16+δ-type structure

IF 5.8 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180138

Tatiana S. Berezhnaya, Konstantin A. Chebyshev, Roman V. Kabanov

{"title":"New fluorite-like lanthanum-europium molybdates with Nd5Mo3O16+δ-type structure","authors":"Tatiana S. Berezhnaya, Konstantin A. Chebyshev, Roman V. Kabanov","doi":"10.1016/j.jallcom.2025.180138","DOIUrl":"10.1016/j.jallcom.2025.180138","url":null,"abstract":"<div><div>Phase relations in the La2O3 – Eu2O3 – MoO3 ternary system were studied using polycrystalline samples obtained in air at 1250°C via solid-state reaction of metal oxides. The system contains a broad region of a cubic fluorite-like phase of lanthanum-europium molybdates, named LEMO, which is isostructural with Nd5Mo3O16+δ. However, the homogeneity range of this phase is quite limited and occurs at a lower MoO₃ content compared to neodymium molybdate. The citrate method was applied for the synthesis of LEMO ceramic samples with a relative density of 98 %. The crystal structure of La2.5Eu2.5Mo2.625O15.75 was analyzed by the Rietveld refinement using powder XRD data. The analysis revealed structural features of this europium-containing fluorite-like molybdate, specifically the splitting of oxygen atomic positions in the octahedral voids within the fluorite structure. The fluorite-like molybdate samples exhibited high electrical conductivity, with the grain bulk contribution at about 10−2 S/cm at 900°C, and intense red luminescence under near-UV and blue radiation.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1023 ","pages":"Article 180138"},"PeriodicalIF":5.8,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143747593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Dual Z-scheme black phosphorus quantum dots (BPQDs)/ Cu2O crystalline/amorphous Ti, Fe-layered double hydroxides (LDH) heterojunction construction with enhanced electron transfer property for photocatalytic nitrogen fixation 用于光催化固氮的双 Z 型黑磷量子点 (BPQDs) / Cu2O 晶体/非晶态 Ti、Fe 层状双氢氧化物 (LDH) 异质结结构具有更强的电子传递性能

IF 5.8 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180135

Wanquan Ma , Yuan Yu , Yanning Qu , Dongfeng Sun , Huayun Du , Lei Zhang , Linyin Huang , Shihu Lei , Qingmei Su , Beibei Lou , Min Zhang , Xinyue Wei , Bingshe Xu

{"title":"Dual Z-scheme black phosphorus quantum dots (BPQDs)/ Cu2O crystalline/amorphous Ti, Fe-layered double hydroxides (LDH) heterojunction construction with enhanced electron transfer property for photocatalytic nitrogen fixation","authors":"Wanquan Ma , Yuan Yu , Yanning Qu , Dongfeng Sun , Huayun Du , Lei Zhang , Linyin Huang , Shihu Lei , Qingmei Su , Beibei Lou , Min Zhang , Xinyue Wei , Bingshe Xu","doi":"10.1016/j.jallcom.2025.180135","DOIUrl":"10.1016/j.jallcom.2025.180135","url":null,"abstract":"<div><div>Photocatalytic nitrogen (N2) reduction efficiency of the catalysts can be enhanced through Z-scheme heterojunctions. However, challenges related to electron transfer efficiency and interactions within these systems remained to be addressed. In this study, a dual Z-scheme heterojunction composed of black phosphorus quantum dot (BPQDs)/Cu2O crystalline/amorphous Ti, Fe-layered double hydroxides (LDH) heterojunction (BPCTF) was successfully synthesized for photocatalytic N2 reduction. The dual Z-scheme heterojunction significantly enhanced charge separation efficiency, and the crystalline/amorphous structure broadened electron transport pathways, thereby enhancing photocatalytic activity. The synthesized BPCTF catalyst achieved a photocatalytic N2 reduction rate of 47.316 µ mol/g/h, corresponding to 5.12-, 2.14-, and 1.16-fold enhancements compared to Cu2O, Ti, Fe-LDH, and Cu2O/Ti, Fe-LDH, respectively. This work advanced the mechanistic understanding of dual Z-scheme photocatalysts by elucidating synergistic contributions from free radical dynamics and intrinsic electric fields, providing valuable insights into the electron transfer processes for photocatalytic N2 reduction.</div></div>","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"1023 ","pages":"Article 180135"},"PeriodicalIF":5.8,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758003","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Study on precipitation and corrosion behavior of Al-1.0Mg-0.6Si(-0.3Cu) alloys by Sn addition modification

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180120

Wenbin Tu, Jianguo Tang, Fengkai Lu, Lehang Ma, Shanlin Wang, Yuhua Chen, Xin Zhan, Pian Xu

引用次数: 0

Simple and Scalable Solid-State Synthesis of ZnMn3O4-g-C3N4 Heterostructures for Enhanced Photoelectrochemical Water Splitting

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180094

G. Sreenivasa Kumar, N.Ch. Ramgopal, N. Ramesh Reddy, A. Sai Kumar, Durga Prasad Pabba, Asma A. Alothman, Saikh Mohammad, Jae Hak Jung, Sang Woo Joo

{"title":"Simple and Scalable Solid-State Synthesis of ZnMn3O4-g-C3N4 Heterostructures for Enhanced Photoelectrochemical Water Splitting","authors":"G. Sreenivasa Kumar, N.Ch. Ramgopal, N. Ramesh Reddy, A. Sai Kumar, Durga Prasad Pabba, Asma A. Alothman, Saikh Mohammad, Jae Hak Jung, Sang Woo Joo","doi":"10.1016/j.jallcom.2025.180094","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180094","url":null,"abstract":"This study presents a novel solid-state one-pot synthesis method for fabricating a ZnMn3O4-g-C3N4 heterostructure composite, designed to enhance the efficiency of photoelectrochemical (PEC) water splitting. The synergistic integration of ZnMn3O4 and graphitic carbon nitride (g-C3N4) enhances light absorption and charge separation, resulting in a significant improvement in photocatalytic performance. Compared to its individual ZnMn3O4 and g-C3N4 counterparts, the ZnMn3O4-g-C3N4 composite demonstrates markedly superior PEC water-splitting efficiency. Linear sweep voltammetry reveals a substantial increase in photocurrent density, reaching 0.18 mA/cm² versus Ag/AgCl under light exposure. Moreover, the ZnMn3O4-g-C3N4 heterostructure exhibits outstanding stability and enhanced photoconversion efficiency over extended operational periods. The facile and scalable synthesis method further highlights its practicality for large-scale production of high-performance composite materials. Beyond showcasing the potential of the ZnMn3O4-g-C3N4 heterostructure for PEC water splitting, this work opens new avenues for the design and development of advanced composite materials in renewable energy applications. The significant advancements presented in this study have the potential to contribute to the broader adoption of sustainable energy solutions.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"15 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Accuracy control of ZrO2 ceramic with microporous structure based on 3D printing

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180130

Xingyao Sun, Jinkai Xu, Yuzhen Zhang, Shan Li, Bingshan Liu, Gong Wang, Wenyan Duan

引用次数: 0

Anomalous strengthening in a low-temperature aged FeMnCoCrN high-entropy alloy: Role of local chemical order

IF 5.8 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180091

Lifang Sun , Zhufeng He , Shuang Jiang , Xinyu Wang , Jintao Zhao , Yuliang Yang , Ye Yuan , Yunjie Li , Nan Jia

引用次数: 0

Tuning electrochemical performance with copper hexahydroxytriphenylene framework and nickel cobaltite anode for asymmetric supercapacitors

IF 6.2 2区材料科学

Journal of Alloys and Compounds Pub Date : 2025-03-31 DOI: 10.1016/j.jallcom.2025.180126

Azhar Saeed, Md Rezaul Karim, Haseebul Hassan, Junaid Ahmad Khan, Abdullatif Hakami, Mohamed Musa Saad Hasb, Muhammad Waqas Iqbal

{"title":"Tuning electrochemical performance with copper hexahydroxytriphenylene framework and nickel cobaltite anode for asymmetric supercapacitors","authors":"Azhar Saeed, Md Rezaul Karim, Haseebul Hassan, Junaid Ahmad Khan, Abdullatif Hakami, Mohamed Musa Saad Hasb, Muhammad Waqas Iqbal","doi":"10.1016/j.jallcom.2025.180126","DOIUrl":"https://doi.org/10.1016/j.jallcom.2025.180126","url":null,"abstract":"Two dimensional conductive metal organic frameworks (2D MOFs), a class of porous materials with high functionality and porosity, offer exceptional potential for energy stowing devices as they offer abundant active sites, expansive surface areas, and rapid ion transport. But, the strategic investigation of 2D MOFs for the innovative field of supercapacitors (SCs) using superior electric properties and electrochemical activity remains largely untapped. This study introduces a novel 2D conductive ultrathin copper-hexahydroxytriphenylene (Cu3(HHTP)2) film composite with nickel cobaltite (NiCo2O4) which was then applied on a nickel foam substrate to develop conductive electrode using a conventional coating method. The interrelated conductive frameworks exhibit a remarkable combination of low interior resistance, swift electrolyte ion diffusion, and rapid electron transfer. With a specific capacity of 1622 C/g, Cu3(HHTP)2/NiCo2O4 demonstrate exceptional electrochemical performance. The corresponding asymmetrical SCs with Cu3(HHTP)2/NiCo2O4 and activated carbon (AC) showed an energy density of 70.12 Wh/kg alongside 840 W/kg power density. Cu3(HHTP)2/NiCo2O4//AC also exhibits remarkable performance, with a specific capacity of 295 C/g at a current density of 1.3 A/g and a high capacity retention of 91% after 7000 cycles.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":"96 1","pages":""},"PeriodicalIF":6.2,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143736876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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