Solvent-free nanocasting toward universal synthesis of ordered mesoporous transition metal sulfide@N-doped carbon composites for electrochemical applications  

作　　者：Jiahui Zhu Zhi Chen Lin Jia Yuqi Lu Xiangru Wei Xiaoning Wang Winston Duo Wu Na Han Yanguang Li Zhangxiong Wu 

机构地区：[1]Suzhou Key Laboratory of Green Chemical Engineering,School of Chemical and Environmental Engineering,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China [2]Institute of Functional Nano and Soft Materials (FUNSOM),Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices,Soochow University,Suzhou 215123,China

出　　处：《Nano Research》2019年第9期2250-2258,共9页纳米研究（英文版）

基　　金：Financial supports from the National Natural Science Foundation of China(Nos.21875153 and 21501125);the Natural Science Foundation of Jiangsu Province(No.BK20150312);the Suzhou Bureau of Science and Technology(No.SYG201637)are much appreciated;We also thank the Young Thousand Talented Program(2015)of China,the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions and the Project of Scientific and Technologic Infrastructure of Suzhou(No.SZS201708)for supports.

摘　　要：Transition metal sulfides (TMSs) have a wide range of applications owing to their intriguing properties.Significant efforts have been devoted to nanostructuring TMSs to enhance their properties and performance,still there is a high need in general synthesis of TMS nanostructures.Herein,for the first time,a simple solvent free reactive nanocasting approach that integrates solid precursor loading,in-situ sulfuration and carbonization into a single heating step is developed for the universal synthesis of ordered mesoporous TMS@N-doped carbon composites (denoted as OM-TMS@NCs) with methionine (Met) and metal chlorides as the precursors and the mesoporous silica (SBA-15) as the hard template.A series of OM-TMS@NCs with a hexagonal mesostructure,ultra-high surface areas (430-754 m2·g-1),large pore volumes (0.85-1.32 cm3·g-1),and unique TMS stoichiometries,including MoS2,Fe7S8,Co9S8,NiS,Cu7S4 and ZnS,are obtained.Two distinct structure configurations,namely,highly dispersed ultrathin TMS nanosheets within NCs and TMS@NC co-nanowire arrays,can be obtained depending on different metals.The structure evolution of the OM-TMS@NCs over the solvent-free nanocasting process is studied in detail for a deep understanding of the synthesis.As demonstrations,these materials are promising for electrocatalytic hydrogen evolution reaction and lithium ion storage with high performances.

关 键 词：TRANSITION metal sulfides MESOPOROUS materials SOLVENT-FREE NANOCASTING in-situ SULFURATION carbon-based composites electrochemical applicati ons 

分 类 号：O4[理学—物理]