Core-Sheath CeO_(2)/SiO_(2) Nanofibers as Nanoreactors for Stabilizing Sinter‑Resistant Pt,Enhanced Catalytic Oxidation and Water Remediation  

作　　者：Yunpeng Wang Zhihui Li Wanlin Fu Yueming Sun Yunqian Dai 

机构地区：[1]School of Chemistry and Chemical Engineering,Southeast University,Nanjing,Jiangsu 211189,People’s Republic of China

出　　处：《Advanced Fiber Materials》2022年第5期1278-1289,共12页先进纤维材料（英文）

基　　金：This work was financially supported by the Natural Science Foundation of China(21975042);the Project of Six Talents Climax Foundation of Jiangsu(XCL-082);Innovation Platform Project Supported by Jiangsu Province(6907041203);the Young Talent Lifting Project of Jiangsu Science and Technology Associate,the Fundamental Research Funds for the Central Universities,the Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX22_0261);the Priority Academic Program Development of Jiangsu Higher Education Institutions;the open project of State Key Laboratory of Physical Chemistry of Solid Surfaces in Xiamen University.

摘　　要：One-dimensional(1D)oxide nanofibers have attracted much attention in recent years but are still hampered by the difficulty in the expansion to 2D or 3D dimensions.Herein,ultrathin CeO_(2)/SiO_(2)nanofibers with intriguing core-sheath structures were simply fabricated by a facile single-spinneret electrospinning method and were subsequently integrated as 2D nanofi-brous mats and 3D sponges.Introducing secondary oxide(i.e.,SiO_(2))could induce a unique fine structure and further inhibit the sintering of CeO_(2)nanocrystals,endowing the resultant dual-oxide nanofibers with high porosity,good flexibility,and enriched oxygen defects.Benefiting from the core-sheath structure and dual-oxide component,the CeO_(2)/SiO_(2)nanofibers could stabilize 2.59 nm-Pt clusters against sintering at 600℃.Once assembled into a 2D mat,the nanofibers could efficiently decrease the soot oxidation temperature by 63℃.Moreover,the core-sheath CeO_(2)/SiO_(2)nanofibers can be readily integrated with graphene nanosheets into a 3D sponge via a gas foaming protocol,showing 218.5 mg/g of adsorption capacity toward Rhodamine B molecules.This work shed lights on the versatile applications of oxide nanofibers toward clean energy ultili-zation and low-carbon development.

关 键 词：Core-sheath structure CeO_(2) Nanofiber NANOREACTOR 

分 类 号：TB383[一般工业技术—材料科学与工程]