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文章速递新型二维层状纳米材料的抗菌研究进展 认领
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作者 周璇 郑云飞 +1 位作者 贾绮林 张斐然 《材料工程》 EI CAS CSCD 北大核心 2021年第1期55-64,共10页
近年来,抗生素耐药菌在全球范围内得到迅速而广泛地传播,新型抗菌药物的开发刻不容缓。随着生物纳米技术的发展,二维层状纳米材料有望成为处理耐药菌的替代选择。本文综述了石墨烯及其衍生物(GMs)、过渡金属硫化物(TMDs)、层状双氢氧化... 近年来,抗生素耐药菌在全球范围内得到迅速而广泛地传播,新型抗菌药物的开发刻不容缓。随着生物纳米技术的发展,二维层状纳米材料有望成为处理耐药菌的替代选择。本文综述了石墨烯及其衍生物(GMs)、过渡金属硫化物(TMDs)、层状双氢氧化物(LDHs)及MXenes二维层状纳米材料的结构特征及其抗菌应用的最新报道,讨论了材料的抗菌机制,例如物理/机械损伤、脂质提取、氧化应激和光热/光动力效应等。最后,本文针对二维层状纳米材料的抗菌应用前景进行了展望:(1)材料特有的空间结构及优异的生物相容性决定了其可以作为抗菌药物的理想载体;(2)优异的光动力和光热杀菌效应使它具有治疗局部皮肤感染的强大潜力;(3)拥有光催化抗菌特性的2D材料可制成抗菌涂层,实现简易的原位消毒,有望应用于无菌医疗设备中。 展开更多
关键词 二维层状纳米材料 抗菌 石墨烯 二硫化钼 层状双氢氧化物 MXenes
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非贵金属助催化剂MXene在光催化领域应用的研究进展 认领
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作者 李开宁 张苏舒 +2 位作者 李宇涵 范佳杰 吕康乐 《催化学报》 SCIE EI CAS 北大核心 2021年第1期3-14,共12页
环境友好型半导体光催化是当前最具前景的光催化技术之一,它不仅能够将太阳能转化为化学能以解决能源危机,还可以将污染物降解矿化从而解决环境问题.但是,传统的半导体光催化剂受限于光利用率低、光生载流子复合率高、稳定性较差等几个... 环境友好型半导体光催化是当前最具前景的光催化技术之一,它不仅能够将太阳能转化为化学能以解决能源危机,还可以将污染物降解矿化从而解决环境问题.但是,传统的半导体光催化剂受限于光利用率低、光生载流子复合率高、稳定性较差等几个方面,无法达到理想的光催化效果.在半导体光催化剂上负载助催化剂是提升光催化效率的有效策略之一.负载助催化剂能够增强光生电荷在半导体与助催化剂界面间的传输,提供额外的催化活性位点,增强光捕获能力,因而被广泛应用于光催化剂的改性.目前广泛使用的贵金属助催化剂包括Au,Ag,Pt,Ru等,虽然这些贵金属助催化剂性能优异,但是它们存在储量少和成本高的问题,严重影响其规模化应用.因此,开展高效且成本低廉的非贵金属助催化剂的研究非常必要.近来,一种新型二维过渡金属材料(MXene)因其具有独特的二维层状结构、优异的导电性能、出色的光学和热力学性质而成为催化领域的研究热点.本文综述了有关非贵金属助催化剂MXene在光催化领域的最新研究进展,内容包括:(1)MXene材料的体相与表面结构特性;(2)薄层MXene的制备方法,例如氢氟酸刻蚀法、氢氟酸替代物刻蚀法以及熔融氟盐刻蚀法;(3)MXene基复合光催化剂的合成及改性策略,包括机械混合、自组装、原位氧化等;(4)MXene辅助增强光催化活性机理.论文还重点介绍了MXene作为助催化剂在光催化领域中的应用,包括光催化分解水产氢、光催化CO2还原、光催化固氮以及有机污染物的光催化降解.最后,论文分析了MXene基异质结光催化剂存在的问题与面临的挑战,并对MXene助催化剂的未来发展进行了展望.主要观点包括:(1)关于光催化分解水、空气净化、合成氨领域的研究较少,需要进一步开展;(2)MXene基异质结光催化剂的反应机理仍存在争议,需采用现代化仪器设备(� 展开更多
关键词 二维过渡金属材料 光催化降解 产氢 二氧化碳还原 固氮
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二维纳米材料MXenes的性质及应用研究进展 认领
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作者 王剑 周榆力 《西华大学学报:自然科学版》 CAS 2020年第3期76-89,共14页
二维层状过渡金属碳/氮化物(MXenes)以其独特的晶体特征和结构特性受到越来越多的关注,尤其是在能源、催化、环境等领域的应用中体现出优异的性能。本文系统地综述MXenes独特的稳定性、机械性能、电子性质、磁性质、光学性质、热电性能... 二维层状过渡金属碳/氮化物(MXenes)以其独特的晶体特征和结构特性受到越来越多的关注,尤其是在能源、催化、环境等领域的应用中体现出优异的性能。本文系统地综述MXenes独特的稳定性、机械性能、电子性质、磁性质、光学性质、热电性能、铁电及压电性质,同时总结分析MXenes在电池领域、电化学电容器领域及催化领域的应用所取得的最新进展及研究成果,最后对MXenes及其复合材料的未来发展前景及面临的挑战进行探讨。 展开更多
关键词 二维纳米材料 过渡金属碳/氮化物 MXenes 物理化学性质 电化学储能领域 化学/光催化领域
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过渡金属碳氮化合物(MXenes)在能量储存装置的研究进展 认领
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作者 郑瑞鑫 舒朝著 龙剑平 《电子元件与材料》 CAS CSCD 北大核心 2020年第2期1-9,共9页
层状过渡金属碳化物和/或氮化物(MXenes)凭借其特有的结构和性能成为了新型储能装置电极催化剂的重要候选材料。MXenes的表达式一般为Mn+1 Xn Tx,其中“M”代表早期的过渡金属元素,“x”表示C、N或CN,而“Tx”为“-OH”、“-F”等基团,... 层状过渡金属碳化物和/或氮化物(MXenes)凭借其特有的结构和性能成为了新型储能装置电极催化剂的重要候选材料。MXenes的表达式一般为Mn+1 Xn Tx,其中“M”代表早期的过渡金属元素,“x”表示C、N或CN,而“Tx”为“-OH”、“-F”等基团,n的值一般为1,2或3。MXenes具有比表面积高、离子电导率大、亲水性好等优良特性,有利于其在离子电池、超级电容器等储能装置中应用推广。本文综述了近几年MXenes在能源储存装置中的应用及研究现状,归纳总结了MXenes的结构及能量储存机制,指出了目前研究过程中存在的短板,并对其发展方向进行展望。 展开更多
关键词 二维材料 MXenes 综述 储能装置 电催化剂 超级电容器
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MXenes在柔性力敏传感器中的应用研究进展 认领
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作者 杨以娜 王冉冉 孙静 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2020年第1期8-18,共11页
随着可穿戴柔性电子技术的发展,高灵敏度和宽感应范围的柔性力敏传感器的需求量逐渐增大,如何选择兼具高导电性和良好柔性的材料作为传感器的敏感材料是获得高性能传感器的关键。近年来,MXene材料因其导电性好、柔韧性高、亲水性好以及... 随着可穿戴柔性电子技术的发展,高灵敏度和宽感应范围的柔性力敏传感器的需求量逐渐增大,如何选择兼具高导电性和良好柔性的材料作为传感器的敏感材料是获得高性能传感器的关键。近年来,MXene材料因其导电性好、柔韧性高、亲水性好以及合成可控等优点成为一种极具潜力的导电敏感材料。本文就MXene基柔性力敏传感器的类型、敏感材料的微结构设计方式、传感性能及传感机理等方面的研究进展进行了阐述和总结。 展开更多
关键词 MXenes 柔性力敏传感器 材料微结构设计 多相复合 综述
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MXenes的表面改性及其在碱金属离子电池中应用的研究进展 认领
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作者 董旭晟 赵瑞正 +1 位作者 孙彬 周国伟 《功能材料》 EI CAS CSCD 北大核心 2020年第9期9031-9044,共14页
二维(2D)MXenes纳米材料因其独特的物理/化学性质以及在能源材料中的广泛应用而备受关注。然而,MXenes在电化学储能领域面临诸多问题,如固有的低容量、自堆叠、不利的表面官能团等。针对以上问题,迫切需要对MXenes材料进行表面改性,以... 二维(2D)MXenes纳米材料因其独特的物理/化学性质以及在能源材料中的广泛应用而备受关注。然而,MXenes在电化学储能领域面临诸多问题,如固有的低容量、自堆叠、不利的表面官能团等。针对以上问题,迫切需要对MXenes材料进行表面改性,以提高储能系统的性能,解决其在发展高性能储能技术的问题。本文简要总结了MXenes的合成方法,介绍了基于MXenes表面改性的最新研究进展,探讨了MXenes纳米复合材料的性能以及在锂离子电池、钠离子电池、钾离子电池等碱金属离子电池中的应用。最后,对MXenes纳米复合材料在未来碱金属离子电池的应用中所面临的挑战和发展前景进行了展望。 展开更多
关键词 二维材料 MXenes 表面改性 纳米复合材料 碱金属离子电池
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基于MXenes材料的电催化析氢研究进展 认领
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作者 王家佩 江松 +5 位作者 丛野 李轩科 董志军 袁观明 李艳军 张江 《硅酸盐通报》 CAS 北大核心 2020年第12期4022-4033,共12页
具有独特层状结构的MXenes是一类新型的二维纳米材料大家族,其中包括二维过渡金属碳化物、氮化物和碳氮化物。它们具有较高的比表面积、丰富的表面化学性质、良好的亲水性和导电性。得益于这些出色的化学和物理特性,在储能、电磁屏蔽和... 具有独特层状结构的MXenes是一类新型的二维纳米材料大家族,其中包括二维过渡金属碳化物、氮化物和碳氮化物。它们具有较高的比表面积、丰富的表面化学性质、良好的亲水性和导电性。得益于这些出色的化学和物理特性,在储能、电磁屏蔽和电催化等应用领域,全世界越来越多的学者对MXenes的研究产生了兴趣。而在这些研究领域当中,电催化析氢(HER)是解决能源短缺问题的有效策略之一。在本文中,介绍了MXenes的结构与性质,综述了近年来MXenes基材料在电催化析氢领域的研究进展。最后,总结并展望了MXenes基电催化剂所面临的挑战与未来的发展方向。 展开更多
关键词 MXenes 复合材料 电催化剂 析氢反应 活性位点 过电位 塔菲尔斜率
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文章速递二维层状Ti3C2的制备及其增强的微波吸收性能 认领
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作者 石好好 苏晓磊 刘毅 《纺织高校基础科学学报》 CAS 2020年第4期51-58,共8页
为探究制备工艺对二维层状Ti3C2形貌及吸波性能的影响,采用化学液相蚀刻法,改变蚀刻温度和蚀刻时间,利用质量分数40%的HF选择性蚀刻Ti3AlC2,制得5种二维层状Ti3C2,利用X射线衍射(XRD)、扫描电镜(SEM)和矢量网络分析仪等对所制备样品的... 为探究制备工艺对二维层状Ti3C2形貌及吸波性能的影响,采用化学液相蚀刻法,改变蚀刻温度和蚀刻时间,利用质量分数40%的HF选择性蚀刻Ti3AlC2,制得5种二维层状Ti3C2,利用X射线衍射(XRD)、扫描电镜(SEM)和矢量网络分析仪等对所制备样品的微观结构和电磁参数进行表征和测试,优选吸波性能优异的Ti3C2制备工艺。结果表明:当蚀刻温度25℃,蚀刻时间24 h时,可得到结晶度较好的Ti3C2;当蚀刻时间12 h,蚀刻温度40℃时,可得到层间距更大的Ti3C2;当蚀刻时间8 h,蚀刻温度25℃时,Ti3C2具有较宽的有效吸波频段(<-10 dB,0.5 GHz);当匹配厚度为3 mm时,在11.4 GHz处Ti3C2反射率损耗达到极值为-27.95 dB。 展开更多
关键词 MXenes Ti3C2 吸波性能 阻抗匹配 二维层状结构 蚀刻
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Intedrcalation in Two-Dimensional Transition Metal Carbides and Nitrides(MXenes) toward Electrochemical Capacitor and Beyond 认领
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作者 Jianmin Li Hao Wang Xu Xiao 《能源与环境材料(英文)》 2020年第3期306-322,共17页
Since its discovery in 2011,the emerging family of two-dimensional(2D)transition metal carbides,nitrides,and carbonitrides(denoted as MXenes)has shown tremendous promise in the field of energy storages,especially elec... Since its discovery in 2011,the emerging family of two-dimensional(2D)transition metal carbides,nitrides,and carbonitrides(denoted as MXenes)has shown tremendous promise in the field of energy storages,especially electrochemical capacitors(ECs).The intercalation of foreign species,including but not limited to proton,cations,organic ions,and solvents,is demonstrated as one of the dominant facts during the energy storage process of MXenes,through which interlayer spacing of MXenes can be reversibly tuned,followed with reversible redox reactions on the surface of MXenes.Such a mechanism provides MXenes extremely high capacitance up to 1500 F cm-3,in aqueous acidic electrolyte.In addition,because of the versatile terminations on their surface,the intercalation of ions into MXenes can simultaneously induce the reversible transformation of their electronic structure to trigger some other phenomenon,for example,electrochromic effect,which has great potential on electrochromic smart window—an extended application of ECs.Accordingly,regulating and facilitating the intercalation in MXenes is of great significance for MXene-based ECs.In this review,we summarize the recent progress on the intercalation in MXenes towards ECs,discussing on the intercalated species,working mechanisms,and methods to promote the intercalation.Furthermore,we prospect the future research directions of intercalation of MXenes in ECs,such as the combination of simulation and experiment on finding the best intercalation species,precisely controlling the interlayer spacing and beyond,to boost the electrochemical performance of MXene toward practical applications and multi-functional devices. 展开更多
关键词 electrochemical capacitors INTERCALATION IONS MXenes solvents
Ti3C2Tx/PEDOT:PSS hybrid materials for room-temperature methanol sensor 认领
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作者 Xiaofeng Wang Kaiming Sun +2 位作者 Ke Li Xu Li Yury Gogotsi 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期1018-1021,共4页
It is essential to develop a methanol gas sensor with high selectivity and low working temperature for human health and environmental monitoring.In this work,a blend of PEDOT:PSS and Ti3C2Tx with the mass ratio of 4:1... It is essential to develop a methanol gas sensor with high selectivity and low working temperature for human health and environmental monitoring.In this work,a blend of PEDOT:PSS and Ti3C2Tx with the mass ratio of 4:1 is used to fabricate a methanol gas sensor.It possesses a high response ratio of the largest response and the second largest response(5.54)and an enhanced response compared to pure PEDOT:PSS and pure Ti3C2Tx tested at room temperature.These findings may pave the way towards design of the MXenes based high-performance gas-sensing materials in the future. 展开更多
关键词 Ti3C2Tx MXenes PEDOT:PSS METHANOL Gas sensor Room temperature
Electromagnetic interference shielding Ti3C2Tx-bonded carbon black films with enhanced absorption performance 认领
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作者 Xiaomeng Fan Minghang Li +4 位作者 Xin Li Fang Ye Jimei Xue Litong Zhang Laifei Cheng 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期1026-1029,共4页
The demand for flexible and freestanding electromagnetic interference(EMI)shielding materials are more and more urgent to combat with serious electromagnetic(EM)radiation pollution.Twodimensional Ti3C2Tx is considered... The demand for flexible and freestanding electromagnetic interference(EMI)shielding materials are more and more urgent to combat with serious electromagnetic(EM)radiation pollution.Twodimensional Ti3C2Tx is considered as promising EMI shielding material to graphenes because of the low cost and high electrical conductivity.However,the shielding performance still needs to be optimized to decrease the reflection effectiveness(SER)and increase absorption effectiveness(SEA).Herein,we prepared Ti3C2Tx-bonded carbon black films with a porous structure.The SER decreased from 20 dB to12 dB and the SEA increased from 31 dB to 47 dB.The best EMI shielding effectiveness can be as high as60 dB with SEA of 15 dB and SER of45 dB.Their calculated specific shielding effectiveness can be as high as8718 dB cm^2/g.These results indicate that the porous structure can enhance the absorption of the EMI shielding films,resulting from the enhanced scattering and reflectio n.Conseque ntly,this work provides a promising MXene-based EMI shielding film with lightweight and flexibility. 展开更多
关键词 Carbon black MXenes FILM Electromagnetic interference shielding FLEXIBLE
Additive-free porous assemblies of Ti3C2Tx by freeze-drying for high performance supercapacitors 认领
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作者 Yue Yang Lili Wu +5 位作者 Lu Li Shuangyan Lin Lina Bai Xinzhi Ma Zhitao Shao Xitian Zhang 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期1034-1038,共5页
Ti3C2Tx has shown great potential in energy storage filed,but the restacking between Ti3C2Tx nanosheets seriously hampers the maximization of its capacitance.In this study,we rationally designed and synthesized porous... Ti3C2Tx has shown great potential in energy storage filed,but the restacking between Ti3C2Tx nanosheets seriously hampers the maximization of its capacitance.In this study,we rationally designed and synthesized porous Ti3C2Tx assemblies without any additive by introducing ice as spacers using a facile freeze-drying method.The porous Ti3C2Tx assemblies have a three-dimensional network structure,which consists of ultra large Ti3C2Tx lamellar walls and lots of macro-and mesopores.It has been proven that there are more-O groups on the surface of the porous Ti3C2Tx assemblies than the Ti3C2Tx film.The porous Ti3C2Tx assemblies deliver a maximum areal capacitance of 1668 mF/cm^2 when the mass loading is 8.4 mg/cm^2,an optimized specific capacitance of 247.2 F/g when the mass loading is 5.3 mg/cm^2,and87%capacitance retention over 10000 cycles.The symmetric solid-state supercapacitors based on the porous Ti3C2Tx assemblies show an areal capacitance of 355.8 mF/cm^2,the maximum power density of50 mW/cm^2 and an outstanding flexibility under different deformation. 展开更多
关键词 MXenes Ti3C2Tx SUPERCAPACITOR FREEZE-DRYING Additive-free
From high-yield Ti3AlCN ceramics to high-quality Ti3CNTx MXenes through eliminating Al segregation 认领
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作者 Ningjun Chen Haichao Huang +8 位作者 Zhong Xu Yanting Xie Da Xiong Xiang Chu Bingni Gu Bo Zheng Weili Deng Haitao Zhang Weiqing Yang 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期1044-1048,共5页
Ti3CNTx MXenes with unique electrical conductivity can be widely applied for supercapacitors and electromagnetic shielding.However,its relatively low-yield quaternary nitrogen-containing Ti3AlCN ce ramics precursor(le... Ti3CNTx MXenes with unique electrical conductivity can be widely applied for supercapacitors and electromagnetic shielding.However,its relatively low-yield quaternary nitrogen-containing Ti3AlCN ce ramics precursor(less than 50%),due to the inevitable Al segregation during the synthesizing process,significantly hindered its widely commercial applications.Herein,we employed the controllable AlNoversaturation precursor strategy to precisely tune the phase transition point of quaternary Ti3AlCN ceramics to obtain high-yield Ti3 AlCN precursor for the purpose of high conductivity Ti3 CNTx MXenes.Combined energy dispersive X-ray spectrometer(XRD)with X-ray photoelectron spectroscopy(XPS)characterizations,the yield of the quaternary nitrogen-containing Ti3 AlCN ceramics was evidently proved to be up to 70%,which is 1.4 times than that of previously reported works.Such relatively highyield quaternary Ti3AlCN is mainly ascribed to the elimination of Al segregation.Based on it,we further developed accordion-like two-dimensional(2D)MXene via hydrofluoric acid etch and vacuum freezedry.This novel accordion-like 2D Ti3CNTx MXene possesses high electrochemical capacitive properties(209 F/g).Therefore,this controllable AlN-oversaturation precursor strategy will pave a way to exploit costly high-yield MAX ceramics precursor for high conductivity MXenes and also play a powerful role in promoting their practical applications including electrical and magnetic engineering fields. 展开更多
关键词 Al segregation High-yield Ti3AlCN MAX phase Ti3CNTx MXenes SUPERCAPACITORS
新型二维材料光催化与电催化研究进展 认领
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作者 李能 孔周舟 +1 位作者 陈星竹 杨雨菲 《无机材料学报》 SCIE EI CAS CSCD 北大核心 2020年第7期735-747,共13页
二维材料以其丰富多样的性能受到广泛关注。该类材料具有极高的比表面积,可以作为光催化剂和电催化剂,在环境领域和可再生能源领域具有较大的开发和应用前景。本文综述了三种新型二维材料的结构性能,即二维过渡金属碳/氮化物(MXenes)、... 二维材料以其丰富多样的性能受到广泛关注。该类材料具有极高的比表面积,可以作为光催化剂和电催化剂,在环境领域和可再生能源领域具有较大的开发和应用前景。本文综述了三种新型二维材料的结构性能,即二维过渡金属碳/氮化物(MXenes)、类石墨相氮化碳(g-C3N4)以及黑磷(BP)在光催化或电催化领域的研究进展及改性方式;对二维材料催化性能的改性进行了总结,并展望了今后的研究方向。 展开更多
关键词 新型二维材料 光催化 电催化 过渡金属碳/氮化物 类石墨相氮化碳 黑磷 综述
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K+alkalization promoted Ca2+intercalation in V2CTx MXene for enhanced Li storage 认领
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作者 Ming Lu Yaopeng Zhang +5 位作者 Junnan Chen Wenjuan Han Wei Zhang Haibo Li Xia Zhang Bingsen Zhang 《能源化学:英文版》 SCIE EI CAS CSCD 2020年第10期358-364,共7页
Although MXenes is highly attractive as anode materials of lithium ion batteries,it sets a bottleneck for higher capacity of the V2CTxMXene due to the limited interlayer space and the derived surface terminations.Here... Although MXenes is highly attractive as anode materials of lithium ion batteries,it sets a bottleneck for higher capacity of the V2CTxMXene due to the limited interlayer space and the derived surface terminations.Herein,the cation intercalation and ion-exchange were well employed to achieve a K+and Ca2+intercalated V2CTxMXene.A larger interlayer distance and low F surface terminations were thereof obtained,which accelerates the ion transport and promotes the delicate surface of V2CTx MXene.As a result,a package of enhanced capacity,rate performance and cyclability can be achieved.Furthermore,the ion exchange approach can be extended to other 2 D layered materials,and both the interlayer control and the surface modification will be achieved. 展开更多
关键词 V2CTx MXenes Calcium ion Interlayer distance INTERCALATION Lithium storage
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Potential of MXenes in Water Desalination: Current Status and Perspectives 认领
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作者 Ihsanullah Ihsanullah 《纳微快报:英文版》 SCIE EI CAS CSCD 2020年第6期70-89,共20页
MXenes,novel 2D transition metal carbides,have emerged as wonderful nanomaterials and a superlative contestant for a host of applications.The tremendous characteristics of MXenes,i.e.,high surface area,high metallic c... MXenes,novel 2D transition metal carbides,have emerged as wonderful nanomaterials and a superlative contestant for a host of applications.The tremendous characteristics of MXenes,i.e.,high surface area,high metallic conductivity,ease of functionalization,biocompatibility,activated metallic hydroxide sites,and hydrophilicity,make them the best aspirant for applications in energy storage,catalysis,sensors,electronics,and environmental remediation.Due to their exceptional physicochemical properties and multifarious chemical compositions,MXenes have gained considerable attention for applications in water treatment and desalination in recent times.It is vital to understand the current status of MXene applications in desalination in order to define the roadmap for the development of MXene-based materials and endorse their practical applications in the future.This paper critically reviews the recent advancement in the synthesis of MXenes and MXene-based composites for applications in desalination.The desalination potential of MXenes is portrayed in detail with a focus on ion-sieving membranes,capacitive deionization,and solar desalination.The ion removal mechanism and regeneration ability of MXenes are also summarized to get insight into the process.The key challenges and issues associated with the synthesis and applications of MXenes and MXene-based composites in desalination are highlighted.Lastly,research directions are provided to guarantee the synthesis and applications of MXenes in a more effective way.This review may provide an insight into the applications of MXenes for water desalination in the future. 展开更多
关键词 MXenes 2D materials METAL carbides Capacitive DEIONIZATION SOLAR DESALINATION Water DESALINATION
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A mini-review on MXenes as versatile substrate for advanced sensors 认领
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作者 Razium Ali Soomro Sana Jawaid +2 位作者 Qizhen Zhu Zaheer Abbas Bin Xu 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期922-930,共9页
MXenes have emerged as versatile 2D materials that are already gaining paramount attention in the areas of energy,catalyst,electromagnetic shielding,and sensors.The unique surface chemistry,graphene-like mo rphology,h... MXenes have emerged as versatile 2D materials that are already gaining paramount attention in the areas of energy,catalyst,electromagnetic shielding,and sensors.The unique surface chemistry,graphene-like mo rphology,high hydrophilicity,metal-like conductivity with redox capability identifies MXenes,as an ideal material for surface-related applications.This short review summarizes the most recent reports that discuss the potential application of MXenes and their hybrids as a transducer material for advanced sensors.Based on the nature of transducing signals,the discussion is categorized into three sections,which include electrochemical(bio)sensors,gas sensors,and finally,electro-chemiluminescence&fluorescent sensors.The review provides a concise summary of all the analytical merits obtained subsequent to the use of MXenes,followed by endeavors that have been made to accentuate the future perspective of MXenes in sensor devices. 展开更多
关键词 MXenes Electrochemical sensors Gas sensors Electrochemiluminescent sensor Fluorescent sensors
Recent progress of MXenes as the support of catalysts for the CO oxidation and oxygen reduction reaction 认领
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作者 Yiying Zhang Xilin Zhang +1 位作者 Cheng Cheng Zongxian Yang 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期931-936,共6页
MXenes,the new family of two-dimensional(2D)transition metal carbides/nitrides,can serve as the substrate materials for the catalysts due to the large specific surface area,tunable electronic structures and thermal st... MXenes,the new family of two-dimensional(2D)transition metal carbides/nitrides,can serve as the substrate materials for the catalysts due to the large specific surface area,tunable electronic structures and thermal stability.The first 2D layered MXene,Ti3C2,was successfully obtained by selective etching of the A element from the MAX phases using hydrofluoric acid(HF)at room temperature in 2011.In this review,we summarize the preparation,structure of MXenes and discuss the recent progress in potential application of MXenes in catalysis,mainly in CO oxidation and oxygen reduction reaction(ORR),from the views of both experimental and theoretical inve stigations.The outlook of the major challenges and future directions on research of MXenes is also included. 展开更多
关键词 MXenes CATALYSIS Substrate material CO oxidation ORR
Chemistry of two-dimensional MXene nanosheets in theranostic nanomedicine 认领
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作者 Yuemei Wang Wei Feng Yu Chen 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期937-946,共10页
Transition metal carbide,carbonitride and nitride MXenes,as the emerging two-dimensional(2D)nanomaterials,have aroused burgeoning research interest in a broad range of applications ranging from energy conversion to bi... Transition metal carbide,carbonitride and nitride MXenes,as the emerging two-dimensional(2D)nanomaterials,have aroused burgeoning research interest in a broad range of applications ranging from energy conversion to biomedicines attributing to their distinctive planar nanostructure,physiochemical properties and biological effects.They are featured with fascinating electronic,optical,magnetic,mechanical and thermal properties,which exert significant roles in biomedical applications of 2D MXenes.In this review,we briefly summarize the recent research progress of 2D MXenes and highlight their intrinsic chemistry in theranostic nanomedicines,focusing on the synthetic chemistry for MXenes construction,surface chemistry for surface engineering,physiochemical property for theranostic application and biological chemistry for biosafety evaluation.Furthermore,based on the current achieve ments on MXenes,their potential research directio n,critical challenges and future development in biomedicine are also discussed.It is highly expected that 2D MXene-based nanosystems would have a broad application prospect in theranostic biomedicine provided the current facing critical issues and challenges are adequately solved. 展开更多
关键词 MXenes Two-dimensional materials NANOMEDICINE CANCER THERANOSTIC
Two-dimensional hybrid nanomaterials derived from MXenes(Ti3C2Tx)as advanced energy storage and conversion applications 认领
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作者 Sen Zhao Ravi Nivetha +1 位作者 Yu Qiu Xiaohui Guo 《中国化学快报:英文版》 SCIE CAS CSCD 2020年第4期947-952,共6页
The development of two-dimensional hybrid nanomaterial derived from MXenes as high performance electrode material is the key component for the advanced ene rgy storage and conversion systems.In the past decades,MXene ... The development of two-dimensional hybrid nanomaterial derived from MXenes as high performance electrode material is the key component for the advanced ene rgy storage and conversion systems.In the past decades,MXene derived nanomaterials have attracted greatly interest in scientific activity and potential applications because of their unique synergistic properties such as high thermal stability,excellent electrical conductivity,large surface area,easy to handle and outstanding electro and photo chemical properties.This review is focused on the synthesis of hybrid nanomaterials from MXene(Ti3C2Tx)for renewable energy conversion and storage application including hydrogen evolution reaction,supercapacitor,lithium-ion batteries and photocatalysis.Finally,we also summarized the prospect and opportunities of novel two-dimensional hybrid nanomaterials derived MXene(Ti3C2Tx)fo r futuristic sustainable energy technology. 展开更多
关键词 MXenes Hybrid nanomaterial TWO-DIMENSIONAL Energy storage Energy conversion
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