FlatChem最新文献_第10页

The Rise of Ti3C2Tx MXene synthesis strategies over the decades: A review 几十年来 Ti3C2Tx MXene 合成策略的兴起：综述

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-09-01 DOI: 10.1016/j.flatc.2024.100734

Mohammed Askkar Deen, Harish Kumar Rajendran, Ragavan Chandrasekar, Debanjana Ghosh, Selvaraju Narayanasamy

{"title":"The Rise of Ti3C2Tx MXene synthesis strategies over the decades: A review","authors":"Mohammed Askkar Deen, Harish Kumar Rajendran, Ragavan Chandrasekar, Debanjana Ghosh, Selvaraju Narayanasamy","doi":"10.1016/j.flatc.2024.100734","DOIUrl":"10.1016/j.flatc.2024.100734","url":null,"abstract":"<div>The Ti3C2Tx MXene has ignited a wave of excitement in the world of materials science due to its immense potential for diverse applications. However, a deeper understanding of the synthesis processes involved is crucial to unlock their potential. Here we review the various techniques for producing Ti3C2Tx MXene, covering everything from precursor selection to etching-exfoliation and intercalation-delamination steps. Furthermore, we also explore the oxidation stability of Ti3C2Tx and propose a reaction mechanism to help shed light on this critical aspect of Ti3C2Tx MXene. This review begins with the bibliography studies on Ti3C2Tx and then delves into the principle behind the chemical etching process. Followed by various etching strategies used for Ti3C2Tx synthesis and the impact of individual etching parameters on successful synthesis protocols. Finally, we address the challenges that still need to be overcome to fully realize the potential of Ti3C2Tx and highlight the exciting possibilities for its future development. We aim to inspire further research into this cutting-edge material and encourage the synthesis of Ti3C2Tx MXene with even more outstanding performance and a more comprehensive range of applications.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100734"},"PeriodicalIF":5.9,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142151237","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

Photocatalytic activities of graphene quantum dots constructed from four different nitropyrenes on water redox reaction and organic pollutant degradation 用四种不同的硝基苯烯构建的石墨烯量子点在水氧化还原反应和有机污染物降解中的光催化活性

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-09-01 DOI: 10.1016/j.flatc.2024.100735

Jingjing Wang , Ruonan Liu , Yuxin Qiao, Shuxin Liu, Chuanguang Qin

引用次数: 0

3D printing of graphene-based aerogels and their applications 石墨烯基气凝胶的 3D 打印及其应用

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-24 DOI: 10.1016/j.flatc.2024.100731

Jiaying Wang , Zhe Shi , Jiani Gong, Xianglin Zhou, Jiaming Li, Zhiyang Lyu

{"title":"3D printing of graphene-based aerogels and their applications","authors":"Jiaying Wang , Zhe Shi , Jiani Gong, Xianglin Zhou, Jiaming Li, Zhiyang Lyu","doi":"10.1016/j.flatc.2024.100731","DOIUrl":"10.1016/j.flatc.2024.100731","url":null,"abstract":"<div>Aerogels, as extraordinarily lightweight and porous functional nanomaterials, have garnered significant interest in both academia and industry over the past few decades. Graphene-based aerogels, in particular, stand out due to their excellent conductivity properties, high specific surface area, and efficient adsorption efficiency. Despite these advantageous properties, aerogels face challenges in mechanical durability, complicating their processing, especially in applications requiring complex structures. 3D printing technology holds promise for overcoming these limitations through its capabilities in microscale manufacturing, rapid prototyping, and arbitrary shaping. This review summarizes the advantages of graphene-based aerogels and compares various 3D printing techniques used for aerogel fabrication. Furthermore, it also highlights the energy and environmental applications of 3D-printed graphene and graphene-based composite aerogels, including batteries, supercapacitors, electromagnetic shielding, sensors, etc. The review concludes with an exploration of current challenges and provides an outlook on future developments in the 3D printing of graphene-based aerogels.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100731"},"PeriodicalIF":5.9,"publicationDate":"2024-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142087282","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

Novel synthesis of Ti3C2 MXene/ZnO/CdSe for sonoelectron and photoelectron triggered synergetic sonophotocatalytic degradation with various antibiotics 新型合成 Ti3C2 MXene/ZnO/CdSe，用于声电子和光电子触发的协同声光催化降解各种抗生素

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-22 DOI: 10.1016/j.flatc.2024.100726

David Nugroho , Young Jun Joo , Kwang Youn Cho , Rachadaporn Benchawattananon , Saksit Chanthai , Lei Zhu , Won-Chun Oh

{"title":"Novel synthesis of Ti3C2 MXene/ZnO/CdSe for sonoelectron and photoelectron triggered synergetic sonophotocatalytic degradation with various antibiotics","authors":"David Nugroho , Young Jun Joo , Kwang Youn Cho , Rachadaporn Benchawattananon , Saksit Chanthai , Lei Zhu , Won-Chun Oh","doi":"10.1016/j.flatc.2024.100726","DOIUrl":"10.1016/j.flatc.2024.100726","url":null,"abstract":"<div>A straightforward and precise method was employed to generate Ti3C2 MXene/ZnO/CdSe photocatalysts by a simple synthesis process involving calcination at a temperature of 400 °C. Optical, structural, morphology, microstructure, and compositional properties of these catalysts were characterized. Results demonstrated that the presence of ZnO and CdSe doping sustained their existence inside the Ti3C2 MXene structure. Effects of catalyst powder, pollutant powder, and different degrading methods such as sonophotocatalytic, sonocatalytic, and photocatalytic methods on various antibiotic pollutants were then compared. The degradation efficiencies of sonophotocatalytic method were found to be highly efficient, resulting of 99.99, 99.98, and 99.90 % for ciprofloxacin, amoxicillin, and ofloxacin, respectively. Analysis of scavenger effect also illustrated the deterioration of ciprofloxacin and amoxicillin, suggesting that superoxide radicals (<img>O2−) had a substantial role in the sonophotocatalytic degradation process. Based on data obtained for ofloxacin, it was clear that the existence of holes (h+ quencher) affected the deterioration of ofloxacin in the system. Ti3C2 MXene/ZnO/CdSe had a performance in electrochemical sensing. Limits of detection (LODs) for ciprofloxacin, amoxicillin, and ofloxacin were 39.29, 4.49, and 13.04 ppm, respectively. Limits of quantification (LOQs) for ciprofloxacin, amoxicillin, and ofloxacin were 119, 13.61, and 39.52 ppm, respectively. Efficient degradation of pollutants using visible light can be achieved by employing straightforwardly manufactured Ti3C2 MXene/ZnO/CdSe photocatalysts, making them a practical and promising option.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100726"},"PeriodicalIF":5.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142044316","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

High-capacity hydrogen storage in Li-decorated newly synthesized 2D polyaramid: Insights from density functional theory 新合成的二维聚芳纶中的锂装饰高容量储氢：密度泛函理论的启示

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-22 DOI: 10.1016/j.flatc.2024.100727

Heera T. Nair , Prafulla K. Jha , Brahmananda Chakraborty

{"title":"High-capacity hydrogen storage in Li-decorated newly synthesized 2D polyaramid: Insights from density functional theory","authors":"Heera T. Nair , Prafulla K. Jha , Brahmananda Chakraborty","doi":"10.1016/j.flatc.2024.100727","DOIUrl":"10.1016/j.flatc.2024.100727","url":null,"abstract":"<div>Using Density Functional Theory, a newly synthesised 2-dimensional polyaramid (2dpa) system decorated with Li is explored for its hydrogen storage capability, and interesting results are obtained. Various sites on 2dpa are studied to ascertain the finest location for Li-decoration. The optimum configuration for hydrogen storage is then achieved by successively adding H2 molecules, till it satisfies the adsorption energy window as prescribed by DoE (0.2–0.7 eV/H2). Li has a good binding energy of −2.78 eV on 2dpa, higher than the cohesive energy for Li and thus prevents any possibilities of clustering. Yet the clustering has been checked by calculating the diffusion energy barrier for the Li atom which came to be around 1.92 eV. The average binding energy for H2 on 2dpa + Li came to be −0.25 eV and the gravimetric weight percent with 3Li on 2dpa and 6H2 molecules attached to each Li comes to be 10.62. Both values meet the conditions set by the US DoE for solid-state hydrogen storage systems. The thermal and dynamic stability of the system has been investigated using Ab initio Molecular Dynamics simulations and computing phonon spectra. Our theoretical results on newly synthesized 2D material may inspire the experimentalist to design a 2dpa-based high-capacity hydrogen storage device.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100727"},"PeriodicalIF":5.9,"publicationDate":"2024-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142048874","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

Investigating the impact of various etching agents on Ti3C2Tx MXene synthesis for electrochemical energy conversion 研究各种蚀刻剂对用于电化学能量转换的 Ti3C2Tx MXene 合成的影响

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-19 DOI: 10.1016/j.flatc.2024.100730

Norulsamani Abdullah , Nurul Atiqah Izzati Md Ishak , K.H. Tan , M.A. Zaed , R. Saidur , A.K. Pandey

{"title":"Investigating the impact of various etching agents on Ti3C2Tx MXene synthesis for electrochemical energy conversion","authors":"Norulsamani Abdullah , Nurul Atiqah Izzati Md Ishak , K.H. Tan , M.A. Zaed , R. Saidur , A.K. Pandey","doi":"10.1016/j.flatc.2024.100730","DOIUrl":"10.1016/j.flatc.2024.100730","url":null,"abstract":"<div>MXenes represent a revolutionary class of two-dimensional (2D) materials that have garnered significant attention due to their unique properties, including excellent electrical conductivity, and remarkable mechanical strength. This study investigates the influence of different etching agents on the synthesis of MXenes for electrochemical energy conversion applications, particularly in methanol oxidation reactions (MOR). Morphological characterization, particle distribution and sizing, elemental analysis, and surface chemistry assessments were conducted using field emission scanning electron microscopy (FESEM), elemental mapping, transmission electron microscopy (TEM), x-ray diffraction (XRD), and x-ray photoelectron spectroscopy (XPS). Electrochemical techniques such as cyclic voltammetry (CV), electrochemical active surface area (ECSA), Tafel analysis, electrochemical impedance spectroscopy (EIS), and long-term stability assessment were employed. The study reveals that PtRu/MXene synthesized with the FeF3/HCl etching route exhibits the highest ECSA value and peak current density, being 12.3 times and 3.63 times higher than those achieved via the LiF/HCl etching route. The kinetic rate, tolerance to catalyst poisoning and long-term stability also show the better results for this etching route. These findings suggest promising potential for PtRu/MXene_FeF3/HCl as an effective anodic electrocatalyst in direct methanol fuel cell (DMFC) applications.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100730"},"PeriodicalIF":5.9,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142040006","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

2d van der Waal SiC/borophene heterostructure as a promising anode for high-capacity Li ion battery: First principles study 2d van der Waal SiC/borophene 异质结构有望成为高容量锂离子电池的阳极：第一原理研究

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-18 DOI: 10.1016/j.flatc.2024.100729

Nura Ibrahim , Lawal Mohammed , Sadiq Umar , Davide Ceresoli , Qinfang Zhang

{"title":"2d van der Waal SiC/borophene heterostructure as a promising anode for high-capacity Li ion battery: First principles study","authors":"Nura Ibrahim , Lawal Mohammed , Sadiq Umar , Davide Ceresoli , Qinfang Zhang","doi":"10.1016/j.flatc.2024.100729","DOIUrl":"10.1016/j.flatc.2024.100729","url":null,"abstract":"<div>We constructed SiC/borophene heterostructure based on the method of commensurate lattice with supercell approach and studied the structural, electronic and electrochemical properties using density functional theory (DFT). The interfacial binding energy of SiC/borophene is as high as −26.07 meV/Å2. Significant amounts of charge were found to drift from SiC to borophene, resulting in interfacial charge redistribution and increased Li binding affinity on the surfaces. The electronic properties of SiC/borophene showed pronounced metallic conductivity, a trait conducive to anodic applications in electrochemical cells. The calculated Li adsorption energy at the interface of SiC/borophene is −2.23 eV. Multiple layer adsorption is also observed, with the heterostructure retaining much of its structural integrity after adatom adsorption, indicating possible good cycling stability. At the maximum concentration, the Li storage capacity for SiC/borophene is 1980.63 mAh/g, surpassing a large variety of other reported 2D complexes. Also, an overall average operating voltage of 1.06 V is maintained in the structure, which is in proximity of the optimal 1.5 V threshold requisite for anodic operations. The diffusion energy barriers associated with lithium ion migration across the three distinct adsorption sites of the heterostructure all reveal a nominal magnitude with the lowest barrier energy of 0.54 eV at the top of borophene adsorption layer and site. These findings show that SiC/borophene could be used as an anode in very high-capacity lithium-ion batteries.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100729"},"PeriodicalIF":5.9,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142044315","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

Boosting acidic hydrogen peroxide electrosynthesis on 2D metal-organic framework nanosheets based on cobalt porphyrins 在基于卟啉钴的二维金属有机框架纳米片上促进酸性过氧化氢的电合成

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-17 DOI: 10.1016/j.flatc.2024.100728

Ying Liu , Junhao Luo , Hongwei Zeng , Jing Xu , Yao Wang , Yuming Dong , Jiawei Zhang

{"title":"Boosting acidic hydrogen peroxide electrosynthesis on 2D metal-organic framework nanosheets based on cobalt porphyrins","authors":"Ying Liu , Junhao Luo , Hongwei Zeng , Jing Xu , Yao Wang , Yuming Dong , Jiawei Zhang","doi":"10.1016/j.flatc.2024.100728","DOIUrl":"10.1016/j.flatc.2024.100728","url":null,"abstract":"<div>The 2-electron electrocatalytic oxygen reduction reaction (2e− ORR) to hydrogen peroxide (H2O2) represents a promising strategy to resolve the high energy consumption and increasing environmental concerns inherent in the traditional anthraquinone process. The acidic 2e− ORR has emerged as an exciting alternative for industrial-level H2O2 production, whereas is hampered by the inferior H2O2 selectivity due to the uncontrollable proton-coupled electron transfer processes in an acidic environment. Herein, an ultrathin 2D metal–organic frameworks (MOFs) nanosheet based on cobalt tetra(4-carboxyphenyl) porphine (Co-TCPP NSs) is designed to promote H2O2 selectivity up to 96.5 %, accompanied with a remarkable H2O2 generation rate of 4677.42 mg·L−1·h−1. Of note, the Co-TCPP NSs also demonstrate its potential for the electro-Fenton process with a cumulative H2O2 concentration of 1.21 wt%, highlighting its practical potential in portable H2O2 generation electrochemical devices for distributed applications. Our findings demonstrated that the efficient H2O2 electrosynthesis could be attributed to the attenuated *OOH adsorption over Co-N4 moiety on the Co-TCPP NSs, which consequently suppresses its further reduction to form H2O. This work highlights the potential of 2D MOF architecture for the 2e− ORR and provides an atomic-level insight into the enhanced H2O2 selectivity.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100728"},"PeriodicalIF":5.9,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021474","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

NH2-MIL-125(Ti-Zr) synergized with WO3 to construct S-Scheme heterojunction photocatalysts for highly efficient degradation of organic dyes and tetracycline in water NH2-MIL-125(Ti-Zr) 与 WO3 协同构建 S-Scheme 异质结光催化剂，用于高效降解水中的有机染料和四环素

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-15 DOI: 10.1016/j.flatc.2024.100725

Xia Xu , Changchun Chen , Yisheng Shi , Sunyao Chen , Yifeng Wang , Lin Pan , Zishen Guan

{"title":"NH2-MIL-125(Ti-Zr) synergized with WO3 to construct S-Scheme heterojunction photocatalysts for highly efficient degradation of organic dyes and tetracycline in water","authors":"Xia Xu , Changchun Chen , Yisheng Shi , Sunyao Chen , Yifeng Wang , Lin Pan , Zishen Guan","doi":"10.1016/j.flatc.2024.100725","DOIUrl":"10.1016/j.flatc.2024.100725","url":null,"abstract":"<div>The rapid treatment of organic dyes and tetracycline (TC) in industrial wastewater requires highly efficient semiconductor photocatalysts. In this study, the S-Scheme NH2-MIL-125 (Ti-Zr)/ WO3 composite material was successfully synthesized using a two-step hydrothermal method. A comprehensive analysis using X-ray Diffraction (XRD), X-ray Photoelectron Spectroscopy (XPS), High Resolution Transmission Electron Microscopy (HRTEM), and Field Emission Scanning Electron Microscopy (FESEM) images revealed that WO3 nanoparticles are intimately anchored on the NH2-MIL-125 (Ti-Zr) nanodisks, forming a closely packed heterostructure. The bandgap values of WO3 and NH2-MIL-125 (Ti-Zr) were determined to be 2.58 eV and 2.67 eV, respectively. Through Response Surface Methodology (RSM), the optimal photocatalytic conditions for the degradation of simulated pollutants in real aqueous environments by the synthesized photocatalysts were explored. Under the full-spectrum irradiation of a 300 W xenon lamp, the TZW-2 composite photocatalyst exhibited a degradation rate of RhB, MB, and TC solutions as high as 95.7 %, 96.7 %, and 93 % within 90 min, respectively. The excellent photocatalytic performance of the composite photocatalyst originates from the establishment of S-scheme heterojunctions between NH2-MIL-125 (Ti-Zr) and WO3, which was confirmed by various characterization techniques such as XPS valence spectra, photoelectrochemistry, and free radical trapping experiments. The excellent stability of the prepared composite photocatalyst was further validated through three cycling test experiments. This work presents new ideas for constructing novel S-Scheme photocatalysts by combining bimetallic cluster MOFs and metal oxides for wastewater treatment.</div>","PeriodicalId":316,"journal":{"name":"FlatChem","volume":"47 ","pages":"Article 100725"},"PeriodicalIF":5.9,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142021475","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

AIEE based fluorescent detection of Enrofloxacin using methyl isobutyl ketone as a backbone for the resilient 2D MIBK-Sn nanosheets 使用甲基异丁基酮作为弹性二维 MIBK-Sn 纳米片的骨架，基于 AIEE 的恩诺沙星荧光检测技术

IF 5.9 3区材料科学

FlatChem Pub Date : 2024-08-10 DOI: 10.1016/j.flatc.2024.100723

Deepak Dabur , Yun Cheih Chiu , Hui-Fen Wu

引用次数: 0