Materials Today Chemistry
·
2022
·
IF 7.613
Zahra Ansarian,Alireza Khataee,Samira Arefi-Oskoui,Yasin Orooji,Hongjun Lin
Herein, Ti 3 GeC 2 MAX phase was synthesized using the reactive sintering method and characterized via various techniques. The X-ray diffraction pattern confirmed the successful synthesis of the MAX phase in the hexagonal crystal structure with high purity. Based on the field-emission scanning electron microscopy and high-resolution transmission electron microscopy analysis, layered morphology with the compacted structure was observed. The catalytic activity of the MAX phase was evaluated for activation of peroxydisulfate (PDS) under ultrasound (US) irradiation. Ti 3 GeC 2 MAX phase (0.2 g/L) with a bandgap of 1.72 eV demonstrated high capability to activate 0.15 mmol/L of PDS under US irradiation, resulting in 94.7% removal efficiency within 80 min of reaction time. The removal of diverse types of pollutants such as dimethyl phthalate, hydroxychloroquine, and mefenamic acid confirmed the high performance of the Ti 3 GeC 2 /PDS/US ternary system. The quenching tests indicated that both radical and non-radical pathways are involved in the degradation process, and O 2 • − , O • H , S O 4 • − , and O 2 1 were recognized as critical species. In addition, a probable degradation mechanism was proposed. The results provide a promising perspective for the application of MAX phase-based materials in the ternary catalyst/oxidant/US systems for the efficient treatment of organic contaminants. To the best of our knowledge, the present work is the first effort to make use of the Ti 3 GeC 2 MAX phase as a desirable catalyst for the removal of organic pollutants applying the catalyst/PDS/US ternary system.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2023
·
IF 5.5
Pang Zhongya,Tian Feng,Xiong Xiaolu,Li Jinjian,Zhang Xueqiang,Chen Shun,Wang Fei,Li Guangshi,Wang Shujuan,Yu Xing,Xu Qian,Lu Xionggang,Zou Xingli
The two-dimensional MAX phases with compositional diversity are promising functional materials for electrochemical energy storage. Herein, we report the facile preparation of the Cr2GeC MAX phase from oxides/C precursors by the molten salt electrolysis method at a moderate temperature of 700°C. The electrosynthesis mechanism has been systematically investigated, and the results show that the synthesis of the Cr2GeC MAX phase involves electro-separation and in situ alloying processes. The as-prepared Cr2GeC MAX phase with a typical layered structure shows the uniform morphology of nanoparticles. As a proof of concept, Cr2GeC nanoparticles are investigated as anode materials for lithium-ion batteries, which deliver a good capacity of 177.4 mAh g−1 at 0.2 C and excellent cycling performance. The lithium-storage mechanism of the Cr2GeC MAX phase has been discussed based on density functional theory (DFT) calculations. This study may provide important support and complement to the tailored electrosynthesis of MAX phases toward high-performance energy storage applications.
研究领域:
材料科学
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能源存储
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED PHYSICS
·
2023
·Vol. 133
·期 23
·
IF 3.2
Shen Jibing,Zhang Min,Lin Shuai,Song Wenhai,Liu Huijun,Liu Qiangchun,Zhu Xuebin,Sun Yuping
The application of microwave absorption materials, which can effectively convert electromagnetic energy into thermal energy and/or other forms of energy, can effectively solve the increasingly serious electromagnetic pollution. As a type of promising microwave absorption material, ternary transition metal carbides/nitrides MAX phases possess layered structure and superior conduction loss capability. However, poor impedance matching and single polarization loss type seriously hinder their improvement of microwave absorption performance. High-entropy engineering is expected to be an effective strategy to address the above problems simultaneously. Herein, a series of low-, medium-, and high-entropy MAX phases with Ti 2 AlC structure were successfully synthesized and their structure, composition, and morphology were comprehensively characterized. High-entropy MAX phase (Ti 1/5 Zr 1/5 V 1/5 Nb 1/5 Ta 1/5 ) 2 AlC presents excellent microwave absorption performance with the optimal minimum reflection loss (RL min ) of −47 dB at 11.92 GHz (a thickness of 2.4 mm) and optimal effective absorption bandwidth of 3.92 GHz between 8.48 and 12.4 GHz (a thickness of 2.78 mm), which are better than those of our prepared low-/medium-entropy MAX phases as well as most of the other previously reported MAX phases. Such excellent microwave absorption performance of (Ti 1/5 Zr 1/5 V 1/5 Nb 1/5 Ta 1/5 ) 2 AlC is attributed to high-entropy engineering, which not only optimizes the impedance matching through regulating permittivity but also introduces more polarization loss type and amount. This work reveals that high-entropy engineering is not only a workable method to enhance the microwave absorption performance in MAX phases, but also an effective strategy to tailor the balance between impedance matching and loss capability through compositional design in single-phase systems.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 11
·6390-6397
·
IF 3.9
Qiqiang Zhang,Bo Wen,Jia Luo,Yanchun Zhou,Xingyuan San,Yiwang Bao,Longsheng Chu,Qingguo Feng,Salvatore Grasso,Chunfeng Hu
In this work, two new 312 MAX phases of Zr 3 PbC 2 and Hf 3 PbC 2 were successfully synthesized by spark plasma sintering. It is the first discovery of lead-containing 312 MAX phases, which together with M 2 PbC (M = Ti, Zr, Hf) form the lead-containing MAX phase family. Considering the extremely low electrical conductivity of Hf 2 PbC, these two new compounds are of great research value. Based on the Rietveld refinement results, their lattice parameters and atomic positions were well determined, as a = 3.3771(5) Å, c = 20.0070(9) Å for Zr 3 PbC 2 and a = 3.3357(1) Å, c = 19.7659(8) Å for Hf 3 PbC 2 , where M atoms are located at (0, 0, 0) and (1/3, 2/3, 0.1258(6)[Zr]; 0.1255(2)[Hf]), Pb atoms are located at (0, 0, 1/4), and C atoms are located at (1/3, 2/3, 0.0663(2)[Zr]; 0.0641(3)[Hf]), respectively. Additionally, the typical laminar microstructure of Zr 3 PbC 2 and Hf 3 PbC 2 grains was observed.
研究领域:
材料科学
·
固体物理学
✓ 已验证
产品关联
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2017
·
IF 1.179
Abdelkhalek Henniche,Mehdi Derradji,Jun Wang,Wen-bin Liu,Jia-hu Ouyang,Aboubakr Medjahed
In this work, Ti3AlC2 Mn+ 1AXn (MAX) phase ceramic nanoparticles were prepared and used as new kind of reinforcement for a typical high-performance phthalonitrile (PN) resin. The synergistic combination of both phases led to nanocomposites with improved thermal and mechanical properties. For instance, the thermal conductivity and tensile properties of the neat resin were highly enhanced upon adding more nanofiller contents. Moreover, the PN resin toughness was ameliorated by 129% at the maximum nanoparticles loading of 15 vol%. The experimental investigations were also compared with predictions from series, Halpin–Tsai, and Kerner models, and a full discussion was provided. A high-resolution transmission electron microscope confirmed the ability of the MAX phase to create a conductive network, especially at high nanofiller amounts. Scanning electron microscope (SEM) analyses of the tensile fractured surfaces revealed positive changes in the morphology, such as an increase in the roughness and amount of hackling as well as the formation of multiple microcracks. The MAX phase also enhanced the thermal stability, stiffness, and glass transition temperature of the neat resin. This work confirms the superiority of the MAX phase ceramics over the traditional ones in enhancing the properties of the PN resin and opens the way for further research in the field.
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2023
·
IF 4.7
Weiqiang Hu,Lianfeng Wei,Jun He,Songhua Chen,Shaocun Liu,Zongqing Ma,Yongchang Liu
In this work, we creatively introduced MAX additives (Ti 2 AlC) into W alloy system to break the development bottleneck of ball milling technology: a large amount of oxygen impurities and large-sized second phase particles at grain boundaries (GBs). Unlike traditional oxides/carbides, Ti 2 AlC can undergo self-decomposition during high-temperature sintering stage (>1400 °C) on the basis of hydrogen sintering, and continue to adsorb a number of stubborn oxygen impurities to form various smaller, more dispersed, and stronger in-situ Ti x C y , TiO x , Al 2 O 3 , and Al x Ti y O z nanoparticles . Furthermore, these in-situ nanoparticles could maintain stable coherent interfaces with W, thereby more effectively refining, purifying, and strengthening matrix. Compared to traditional W-carbide/oxide alloys, MAX additives render our alloy with high hardness (521 ± 24 HV 0.2 ), a remarkable combination of high compressive strength (1262.9 ± 35.1 MPa) and large ductility (9.88%). This work provides a new perspective for the preparation of high-performance refractory metals and relevant engineering application.
研究领域:
材料科学
·
金属材料
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纳米材料
·
粉末冶金
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结构合金
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jingwen Tang,Wei Zheng,Hanning Zhang,Peigen Zhang,Jianxiang Ding,Congyuan Zeng,Wei Zhang,Nosipho Moloto,ZhengMing Sun
Tin-based anode materials, while notable for their high volumetric capacity, often experience rapid capacity decay during cycling due to volume expansion, pulverization, and agglomeration. Herein, we synthesized a nanoscale composite through a thermo-mechanochemical process utilizing the mechanical anisotropy of Ti 2 SnC MAX phase. This composite incorporates in-situ generated nano-Sn particles within a Ti 2 SnC matrix characterized by Sn vacancies. The strategic integration of uniformly nano-Sn particles and the refined granularity of the Ti 2 SnC matrix markedly enhance the electrochemical properties of the anode. Impressively, it maintains a volumetric capacity of 1430 mAh cm −3 after 400 cycles, equivalent to approximately 3370 h, at a current density of 0.1 A g −1 . Post-cycling analysis reveals the transformation of Sn into a nanocrystalline state and the gradual exposure of more Sn active sites within the Ti 2 SnC matrix, significantly enhancing lithium-ion storage performance. This study highlights the crucial role of the A-site atomic layer in MAX phases and, considering the compositional diversity of MAX phases, offers new insights and broad applicability in lithium-ion battery technologies.
研究领域:
材料科学
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电化学
·
能源存储
✓ 已验证
DOI
高影响因子
DESALINATION
·
2024
·
IF 8.3
Negar Yousef Tizhoush,Samira Jabbarvand Behrouz,Vahid Vatanpour,Yasin Orooji,Alireza Khataee
Developing high-performance nanofiltration membranes for treating wastewater contaminated with organic pollutants requires special attention. The toxic nature and side effects of organic pollutants, such as dyes and antibiotics, make them hazardous. Therefore, wastewater containing organic pollutants must be treated properly before entering water environments. Herein, we synthesized the Ti 3 SiC 2 MAX phase via the reactive sintering technique. To make the Ti 3 SiC 2 more hydrophilic and compatible with the polyethersulfone (PES) membrane, its surface was modified in one step with Ag NPs/polyvinyl alcohol (Ag-MAX). Different quantities (0–1 wt%) of Ag-MAX filler were embedded into the PES membrane via the phase inversion process. The presence of 0.75 wt% Ag-MAX filler enhanced hydrophilicity, porosity, surface roughness, pore size, and negative charge of PES membrane, which are beneficial for permeance and antifouling features of Ag-MAX mixed matrix membranes (MMMs). The optimized membrane containing 0.75 wt% of Ag-MAX demonstrated the uppermost pure water flux of 72.5 L/m 2 h with a flux recovery ratio of 82.8 %. The optimized membrane showed rejection efficiency of 99.4, 99.6, and 99.7 % for Direct Black 38, Acid Blue 113, and Disperse Red 153 dye solutions, along with a satisfactory rejection of 70.7, 65.9, and 58.5 % for Basic Violet 1, Alizarin Red S, and Ceftriaxone solutions, respectively. Furthermore, the effects of various pH values, various salt types, and cyclic filtration experiments on the separation performance of 0.75 wt% Ag-MAX MMM were investigated. The rejection efficiency of 0.75 wt% Ag-MAX MMM toward Acid Blue 113 is almost constant and higher than 98.5 % in different conditions, demonstrating that the Ag-MAX MMM could be a suitable candidate for the treatment of wastewater contaminated with organic pollutants.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ULTRASONICS SONOCHEMISTRY
·
2022
·
IF 9.336
Samira Haddadi,Alireza Khataee,Samira Arefi-Oskoui,Behrouz Vahid,Yasin Orooji,Yeojoon Yoon
In light of growing environmental concerns over emerging contaminants in aquatic environments, antibiotics in particular, have prompted the development of a new generation of effective sonocatalytic systems. In this study, a new type of nano-laminated material, Ti 2 SnC MAX phase, is prepared, characterized, and evaluated for the sonocatalytic degradation of oxytetracycline (OTC) antibiotic. A variety of identification analyses, including X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, Brunauer-Emmett-Teller, and diffuse reflectance spectroscopy, were conducted to determine the physicochemical properties of the synthesized catalyst. By optimizing the operating factors, total degradation of OTC occurs within 120 min with 1 g L -1 catalyst, 10 mg L -1 OTC, at natural pH of 7.1 and 150 W ultrasonic power. The scavenger studies conclude that the singlet oxygen and superoxide ions are the most active species during the sonocatalytic reaction. Based on the obtained data and GC–MS analysis, a possible sonocatalytic mechanism for the OTC degradation in the presence of Ti 2 SnC is proposed. The catalyst reusability within eight consecutive runs reveals the proper stability of Ti 2 SnC MAX phase. The results indicate the prospect for MAX phase-based materials to be developed as efficient sonocatalysts in the treatment of antibiotics, suggesting a bright future for the field.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Nano
·
2017
·
IF 13.942
Guodong Zou,Qingrui Zhang,Carlos Fernandez,Gang Huang,Jianyu Huang,Qiuming Peng
Rational design of heterogeneous electrode materials with hierarchical architecture is a potential approach to significantly improve their energy densities. Herein, we report a tailored microwave-assisted synthetic strategy to create heterogeneous hierarchical Ti3SiC2@C-containing Na2Ti7O15 (MAX@C-NTO) composites as potential anode materials for high-performance sodium storage in a wide temperature range from 25 to 80 °C. This composite delivers first reversible capacities of 230 mAh g–1 at 200 mA g–1 and 149 mAh g–1 at 3000 mA g–1 at 25 °C. A high capacity of ∼93 mAh g–1 without any apparent decay even after more than 10 000 cycles is obtained at an ultrahigh current density of 10 000 mA g–1. Moreover, both a high reversible capacity and an ultralong durable stability are achieved below 60 °C for the same composites, wherein a 75.2% capacity retention (∼120 mAh g–1 at 10 000 mA g–1) is achieved after 3000 cycles at 60 °C. To the best of our knowledge, both the sodium storage performances and the temperature tolerances outperform those of all the Ti-based sodium storage materials reported so far. The superior sodium storage performances of the as-synthesized composites are attributed to the heterogeneous core–shell architecture, which not only provides fast kinetics by high pseudocapacitance but also prolongs cycling life by preventing particle agglomeration and facilitates the transportation of electrons and sodium ions by large micro/mesopore structure.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL RESEARCH
·
2022
·
IF 8.431
Vildan Sanko,Ahmet Şenocak,Süreyya Oğuz Tümay,Yasin Orooji,Erhan Demirbas,Alireza Khataee
Bisphenol A (BPA) is an industrially preferred material for the production of plastic and polycarbonate as well as a used material for the interior of food and beverage cans. In this study, synthesis and electrochemical sensor application of Mo 2 Ti 2 AlC 3 /MWCNT (multi-walled carbon nanotube) nanocomposite for BPA sensing was evaluated. Mo 2 Ti 2 AlC 3 was used as MAX phase material in the design of the sensor, and MWCNT was preferred to increase conductivity and sensitivity. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used to determine Mo 2 Ti 2 AlC 3 /MWCNT nanocomposite's electrochemical sensor performances which had LOD of 2.7 nM and LOQ of 8.91 nM in the linear working range of 0.01–8.50 μM calculated from DPV. The composite showed a single oxidation step against BPA which is diffusion-controlled and irreversible. The sensor was successfully applied for the determination of BPA in milk pack, plastic bottle, and can with recoveries ranging from 95.67% to 100.60%. In addition, sensor performance was examined through selectivity , repeatability, and reusability studies. HPLC as a standard determination method was carried out for accuracy of the voltammetric determination method in the real samples. The developed sensor could be applied to different areas from industry quality control to clinical analysis for the detection of BPA.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Qiqiang Zhang,Bo Wen,Jia Luo,Yanchun Zhou,Xingyuan San,Yiwang Bao,Qingguo Feng,Salvatore Grasso,Chunfeng Hu
In this paper, we combine rare earth element Sc and lead-containing MAX to predict a new ternary layered MAX phase Sc 2 PbC. Sc 2 PbC with a purity of 87.40 wt% was successfully synthesized by spark plasma sintering , and its crystal structure and atomic positions were obtained by X-ray diffraction (XRD). The Rietveld refinement results show that Sc 2 PbC belongs to a typical MAX phase P6 3 /mmc (No.194) space group with lattice parameters of a = 3.4003(7) Å and c = 14.7475(3) Å, where Sc atom is located at (1/3, 2/3, 0.57958), Pb atom is located at (1/3, 2/3, 1/4), and C atom is located at (0, 0, 0). At the same time, we observed the typical MAX phase layered microstructure in Sc 2 PbC bulk using a scanning electron microscope (SEM). In addition, the proportion of elements measured by energy dispersive spectroscopy (EDS) is within the allowable error range, which confirms that Sc 2 PbC is a new MAX phase compound.
研究领域:
材料科学
·
无机化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）