Uniform and monodisperse ZnSn（OH）6 perfect octahedrons have been synthesized by a facile coprecipitation reaction process. The particle size of the asprepared ZnSn（OH）6 octahedral structure can be readily controll...Uniform and monodisperse ZnSn（OH）6 perfect octahedrons have been synthesized by a facile coprecipitation reaction process. The particle size of the asprepared ZnSn（OH）6 octahedral structure can be readily controlled by adjusting the reaction temperature （T）, and the side length of ZnSn（OH）6 octahedrons was tailored from 3 pm （40℃） to 4 pm （60℃） and 5 μm （80℃）. The ethanol sensing properties of ZnSn（OH）6 octahedrons were carefully investigated. The gas sensing experimental data show that the sensor based on ZnSn（OH）6 （40℃） has good selectivity, fast response/recovery time and the highest response （Ra/Rg = 23.8） to 200 ppm ethanol at relatively low optimum operating temperature （200℃） compared to sensors based on ZnSn（OH）6 （60℃） and ZnSn（OH）6 （80℃）, which might result from different specific surface areas. The study demonstrated that perfect octahedral ZnSn（OH）6 with controlled crystalline size and desirable sensing performance can be synthesized by a simple fabrication procedure, and the octahedral ZnSn（OH）6 could be a highly promising material for high-performance sensors.展开更多
We report the synthesis of TiO2/ZnSn（OH）6 as a novel nano-composite material via a simultaneous crystallization-etching route with cubic nano-ZnSn（OH）6 and TiF4 as the precursors. The structure, composition and mo...We report the synthesis of TiO2/ZnSn（OH）6 as a novel nano-composite material via a simultaneous crystallization-etching route with cubic nano-ZnSn（OH）6 and TiF4 as the precursors. The structure, composition and morphology of the composite were characterized by XRD, EDS, FETEM and FESEM, which showed the prepared TiO2/ZnSn（OH）6 had a unique morphology of hollow cubic nano-ZnSn（OH）6 attached with rutile TiO2 nanoparticles. The results of photocatalytic activity measurement indicated the photocatalytic activity of the prepared composite was better than that of nano-ZnSn（OH）6. This study may be helpful for the design and fabrication of functional comoosite materials.展开更多
In this work, ZnSn（OH）6with a cubic structure is successfully synthesized by one-step hydrothermal method without any catalyst. The response and recovery characteristics of gas sensing were investigated against vari...In this work, ZnSn（OH）6with a cubic structure is successfully synthesized by one-step hydrothermal method without any catalyst. The response and recovery characteristics of gas sensing were investigated against various gases via quartz crystal microbalance（QCM） at room temperature. The sensor exhibited high sensitivity and good selectivity toward CO gas. Moreover, a linear dependence of log^（àDelta F）about CO concentration was obtained. It is demonstrated that the QCM sensor coated cubic ZnSn（OH）6could be a suitable candidate for detecting CO.展开更多
文摘Uniform and monodisperse ZnSn（OH）6 perfect octahedrons have been synthesized by a facile coprecipitation reaction process. The particle size of the asprepared ZnSn（OH）6 octahedral structure can be readily controlled by adjusting the reaction temperature （T）, and the side length of ZnSn（OH）6 octahedrons was tailored from 3 pm （40℃） to 4 pm （60℃） and 5 μm （80℃）. The ethanol sensing properties of ZnSn（OH）6 octahedrons were carefully investigated. The gas sensing experimental data show that the sensor based on ZnSn（OH）6 （40℃） has good selectivity, fast response/recovery time and the highest response （Ra/Rg = 23.8） to 200 ppm ethanol at relatively low optimum operating temperature （200℃） compared to sensors based on ZnSn（OH）6 （60℃） and ZnSn（OH）6 （80℃）, which might result from different specific surface areas. The study demonstrated that perfect octahedral ZnSn（OH）6 with controlled crystalline size and desirable sensing performance can be synthesized by a simple fabrication procedure, and the octahedral ZnSn（OH）6 could be a highly promising material for high-performance sensors.
基金Supported by the Natural Science Foundation of Fujian Province(No.2013J05027)Fujian Province Education-Science Project for Middle-aged and Young Teachers(No.JA13050)
文摘We report the synthesis of TiO2/ZnSn（OH）6 as a novel nano-composite material via a simultaneous crystallization-etching route with cubic nano-ZnSn（OH）6 and TiF4 as the precursors. The structure, composition and morphology of the composite were characterized by XRD, EDS, FETEM and FESEM, which showed the prepared TiO2/ZnSn（OH）6 had a unique morphology of hollow cubic nano-ZnSn（OH）6 attached with rutile TiO2 nanoparticles. The results of photocatalytic activity measurement indicated the photocatalytic activity of the prepared composite was better than that of nano-ZnSn（OH）6. This study may be helpful for the design and fabrication of functional comoosite materials.
基金financially supported by the National Natural Science Foundation of China(51808080)China Postdoctoral Science Foundation(2022M710830)+4 种基金the Venture and Innovation Support Program for Chongqing Overseas Returnees(cx2022005)the Natural Science Foundation Project of CQ CSTC(CSTB2022NSCQ-MSX1267)the Science and Technology Research Program of Chongqing Municipal Education Commission of China(KJQN201800826&KJZD-K202100801)the Post-doctoral Program Funded by Chongqing,Chongqing University Innovation Research Group project(CXQT21023)Funda??o para a Ciência e a Tecnologia/Ministério da Ciência,Tecnologia e Ensino Superior(Portuguese Foundation for Science and Technology/Ministery for Science,Technology and Higher Education)(CEECINST/00102/2018,UIDB/50006/2020 and UIDP/50006/2020 from LAQV)。
基金financially supported by the Key Project of Sichuan provincial Education office(No.13ZA0183)Applied Basic Research Programs of Sichuan Provincial Science and Technology Office(No.2014JY0059)+1 种基金Foundation of Youth Science and Technology Innovation Team of Sichuan Province(No.2015TD0007)Program for New Century Excellent Talents in University of Ministof Education of China(No.NCET-13-0983)
文摘In this work, ZnSn（OH）6with a cubic structure is successfully synthesized by one-step hydrothermal method without any catalyst. The response and recovery characteristics of gas sensing were investigated against various gases via quartz crystal microbalance（QCM） at room temperature. The sensor exhibited high sensitivity and good selectivity toward CO gas. Moreover, a linear dependence of log^（àDelta F）about CO concentration was obtained. It is demonstrated that the QCM sensor coated cubic ZnSn（OH）6could be a suitable candidate for detecting CO.
