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Deintercalation of Al from MoAlB by molten salt etching to achieve a Mo_(2)AlB_(2) compound and 2D MoB nanosheets 被引量:1
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作者 Junji Mou Shibo Li +3 位作者 Weiwei Zhang Weimin Xu Shukai Fan Guoping Bei 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2023年第5期943-953,共11页
Two-dimensional(2D)MoB metal borides(MoB MBene)have attracted much attention due to their fascinating properties and functional applications.So far,work on the synthesis of 2D MoB nanosheets by acid or alkaline etchin... Two-dimensional(2D)MoB metal borides(MoB MBene)have attracted much attention due to their fascinating properties and functional applications.So far,work on the synthesis of 2D MoB nanosheets by acid or alkaline etching of MoAlB has not been very successful.It has been proposed that the 2D MoB MBene may be fabricated by chemical etching of a Mo_(2)AlB_(2) precursor,but further investigations were not performed possibly due to the difficult preparation of the metastable Mo_(2)AlB_(2) compound at high temperatures by solid-state reactions.Here,we report on the successful synthesis of the Mo_(2)AlB_(2) compound and 2D MoB nanosheets by the deintercalation of Al from MoAlB through a ZnCl_(2) molten salt etching approach at relatively low temperatures.The influence of etching temperature,etching time,and starting mixtures on the formation of desirable phases have been investigated.A pure Mo_(2)AlB_(2) compound was synthesized at temperatures below 600℃,while the 2D MoB MBene nanosheets were obtained at 700℃through the molten salt etching of MoAlB.In addition,the present work further confirms that the MoB MBene can be prepared by etching the as-synthesized Mo_(2)AlB_(2) precursor in LiF–HCl solution.Our work demonstrates that the molten salt etching is an effective method to prepare 2D MoB MBene. 展开更多
关键词 two-dimensional(2D)materials Mo_(2)AlB_(2) MoB metal borides(MoB MBene) molten salt etching microstructure
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Inducing piezoelectricity in distorted rutile TiO_(2)for enhanced tetracycline hydrochloride degradation through photopiezocatalysis
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作者 Taotao Xia Lizhen Lu +6 位作者 Haoyu Zhang Jinghui Wang Zonghe Huang Hongyang Wang Weiyi Yang Shuang Gao Qi Li 《Journal of Advanced Ceramics》 SCIE EI CAS CSCD 2024年第3期323-331,共9页
Various material design strategies have been developed to enhance photocatalytic performance of TiO_(2).However,no report is available on applications of the photopiezocatalysis strategy on TiO_(2)due to its lack of p... Various material design strategies have been developed to enhance photocatalytic performance of TiO_(2).However,no report is available on applications of the photopiezocatalysis strategy on TiO_(2)due to its lack of piezoelectricity.Here we developed a low-temperature molten salt etching process to create rutile TiO_(2)nanoparticles by etching[MgO_(6)]octahedrons away from MgTiO_(3)by molten NH_(4)Cl,during which a lattice distortion occurred in TiO_(2).The lattice distortion broke the structure symmetry of rutile TiO_(2)and subsequently endowed these rutile TiO_(2)nanoparticles with an unusual piezoelectric response with the maximum effective piezoelectric coefficient(d_(33))of~41.6 pm/V,which had not previously been found in TiO_(2)photocatalysts.Thus,the photopiezocatalysis strategy was applied for the first time to enhance the photocatalytic performance of these TiO_(2)nanoparticles.The creation of lattice distortion to induce piezoelectricity could be extended to other photocatalysts that the photopiezocatalysis strategy has not been applied to and may generate novel functionalities for various technical applications. 展开更多
关键词 PHOTOCATALYSIS TiO_(2) piezocatalysis molten salt etching process photopiezocatalysis
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Polyelectrolyte Multilayer Patterns Created by Capillary Force and Their Impact on Cell Migration 被引量:1
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作者 Lulu Han Jindan Wu +3 位作者 Tanchen Ren Zhengwei Mao Yang Guo Changyou Gao 《Chinese Journal of Chemistry》 SCIE CAS CSCD 2014年第1期66-72,共7页
Cell migration plays a crucial role in a variety of physiological and pathological processes.In this study a method of capillary force lithography was used to treat poly(sodium 4-styrenesulfonate) (PSS)/poly(diallyldi... Cell migration plays a crucial role in a variety of physiological and pathological processes.In this study a method of capillary force lithography was used to treat poly(sodium 4-styrenesulfonate) (PSS)/poly(diallyldimethylammonium) chloride (PDADMAC) multilayers with a PDMS stamp before or after etching by NaC1 solution,yielding physical patterns with various features such as double thin lines,double strips,meniscus-shaped ridges,and high ridges.The ridge height is controllable in the range of 25 and 1100 nm.Migration of smooth muscle cells (SMCs) was restrained by the double-line patterns in a ridge height-dependent manner.By contrast,the mobility of SMCs was controlled by both the hydration ratio of the multilayers and the pattern features. 展开更多
关键词 capillary force lithography polyelectrolyte multilayer cell migration ridge height salt etching
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