功能化陶瓷纳米纤维的催化应用
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- 英文论文题名：Engineering of Electrospun Ceramic Nanofibers for Catalytic Applications
- 论文作者：代云茜 ; 田计兰
- 英文论文作者：Yunqian Dai ; Jilan Tian ; School of Chemistry and Chemical Engineering ; Southeast University ; State Key Lab of Silicon Materials ; Zhejiang University
- 年：2016
- 作者机构：东南大学化学化工学院;浙江大学硅材料国家重点实验室;
- 论文关键词：陶瓷 ; 异相催化 ; 静电纺丝
- 会议召开时间：2016-11-18
- 会议录名称：中国第四届静电纺丝大会（CICE 2016）摘要集
- 语种：中文
- 分类号：TQ343.41
- 学会代码：ZGNM
- 会议名称：中国第四届静电纺丝大会(CICE 2016)
- 会议地点：中国北京
- 主办单位：中国复合材料学会超细纤维材料分会（筹）
- 学会名称：中关村科创纳米技术创新研究会
- 页数：1
- 文件大小：546k
- 原文格式：D
- 会议级别：全国
摘要
2002年,结合电纺和溶胶-凝胶技术获得金属氧化物纳米纤维以来,电纺技术被广泛应用于制备陶瓷纳米纤维,在催化领域获得突破性进展~([1])。本报告将简略回顾陶瓷纳米纤维的功能化方法,如阵列有序化、表面修饰等,将重点阐述它们在异相催化领域中的几方面应用:(1)通过构筑Pt/Fe_2O_3载体间相互作用,使Pt在加氢反应中表现出高效催化活性;~([2])(2)将Pt纳米晶负载在Ti O_2纳米纤维表面,通过包裹Si O_2多孔壳层,Pt的抗烧结温度高达750 ℃;~([3])(3)选用表面硅烷修饰改性,Ti O2纳米纤维可对水溶液中痕量(100ppm)的贵金属进行高效捕获,效率高达99.95%,并对Suzuki偶联反应具有优异的催化活性;~([4])(4)采用Ti O_2纳米纤维作为光催化剂,利用紫外光催化还原氧化石墨烯,成为光阳极中电子快速传输的通道;~([5,6])(5)以Ti O2纳米纤维为前驱物,可控合成Ti O_2纳米单晶,使其裸露高能{001}晶面,成为极具潜力的高效光催化剂。~([7])
Since the reported fabrication of metal oxide nanofibers through a combination of electrospinning with sol-gel method in 2002,~([1]) this approach has been greatly expanded to engineer functionalized ceramic nanofibers, which have already led to breakthroughs in catalysis. This work reviews the engineering of electrospun ceramic nanofibers in form of alignment, superior structures and surface property, then demonstrates the using of functionalized nanofibers as(1) versatile supports for Pt nanocrystals with ultra high catalytic activity towards to hydrogenation reaction based on improved metal/support interactions between Pt and Fe_2O_3 nanofibers;~([2])(2) substrates of Pt nanocrystals with excellent sinter-resistance up to 750 ℃;~([3])(3) scavengers of precious metal ions which were highly active in Suzuki coupling; ~([4])(4) photocatalysts for UV-light reduction of graphene oxide which acted as fast electron transfer bridge in photoanodes;~([5, 6])(5) the nuclei for generating Ti O_2 anatase nanocrystals with exposed high energy {001} facets, having superiorly photocatalytic activities.~([7])
Since the reported fabrication of metal oxide nanofibers through a combination of electrospinning with sol-gel method in 2002,~([1]) this approach has been greatly expanded to engineer functionalized ceramic nanofibers, which have already led to breakthroughs in catalysis. This work reviews the engineering of electrospun ceramic nanofibers in form of alignment, superior structures and surface property, then demonstrates the using of functionalized nanofibers as(1) versatile supports for Pt nanocrystals with ultra high catalytic activity towards to hydrogenation reaction based on improved metal/support interactions between Pt and Fe_2O_3 nanofibers;~([2])(2) substrates of Pt nanocrystals with excellent sinter-resistance up to 750 ℃;~([3])(3) scavengers of precious metal ions which were highly active in Suzuki coupling; ~([4])(4) photocatalysts for UV-light reduction of graphene oxide which acted as fast electron transfer bridge in photoanodes;~([5, 6])(5) the nuclei for generating Ti O_2 anatase nanocrystals with exposed high energy {001} facets, having superiorly photocatalytic activities.~([7])
引文
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[2]Dai,Y.;Chai,Y.;Sun,Y.;et al.J.Mater.Chem.A,2015,3:125.
[3]Dai,Y.;Lim,B.;Yang,Y.;et al.Angew.Chem.Int.Ed.2010,49:8165.
[4]Dai,Y.;Formo,E.;Li,H.;et al.Chem Sus Chem.2016,10.1002/cssc.201600787.
[5]Dai,Y.;Sun,Y.;Yao,J.;J.Mater.Chem.A2014,2:1060.
[6]Dai,Y.;Yao,J.;Zeng,J.;J.Mater.Chem.2011,21:18174.
[7]Dai,Y.;Cobley,C.;Zeng,J.;Nano Lett.2009,9:2455.