The preparation,characterization, and catalytic performance of porous fibrous LaFeO3 perovskite made from a sunflower seed shell template  

作　　者：Zhifei Wu Li Wang Yixiao Hu Hui Han Xing Li Ying Wang 

机构地区：[1]School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China [2]College of Science&Technology,Ningbo University,Cixi 315000,China

出　　处：《Frontiers of Chemical Science and Engineering》2020年第6期967-975,共9页化学科学与工程前沿（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.21607086);Zhejiang Province Public Welfare Technology Application Research Project(No.2016C33024);Scientific and Technological program of Ningbo City(Nos.2016C51025,2017C50031);Natural Science Foundation of Ningbo(No.2017A610061);Natural Science Foundation of Zhejiang Province(No.LY18B010003);K.C.Wong Magna Fund in Ningbo University.

摘　　要：LaFe03 perovskite with a porous fibrous structure was successfully synthesized using a sunflower seed shell as a template.To investigate the effects of this template,a sample was prepared without a template via the same procedure.Through various characterization techniques,such as X-ray diffraction,scanning electron microscopy,Fourier transform infrared spectroscopy,N2 adsorption-desorption analysis,X-ray photoelectron spectroscopy,oxygen temperature programed desorption,and hydrogen temperature programed reduction,the physiochemical properties of the samples were investigated.The results showed that the sample made with a template had a larger surface area and a larger amount of adsorbed oxygen,which further illustrated that the sunflower seed shell template had a significant impact on the physiochemical properties of the samples.Furthermore,we explored the catalytic activity for nitric oxide(NO)oxidation,and studied the factors affecting it,which highlighted its potential application in automobile exhausts.

关 键 词：NO oxidation porous fibrous LaFeO3 sunflower seed shell 

分 类 号：O64[理学—物理化学]