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1、第32卷第2期Vol.32No.22018年2月CHINESEJOURNALOFMATERIALSRESEARCHFeb.2018载钯细菌纤维素纳米纤维复合膜用于乙醇的电催化氧化敖克龙李大伟姚壹鑫吕鹏飞魏取福(江南大学生态纺织教育部重点实验室无锡214122)摘要以发酵合成的细菌纤维素(BC)为载体支架，用一步化学还原法在BC上直接生长钯纳米颗粒(PdNPs)，制备出载钯细菌纤维素纳米纤维复合膜(Pd/BCF)。X射线衍射(XRD)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)等测试结果表明，PdNPs比较均匀地分散在纤维表面及介孔中，粒径约为10nm，载量约为19.0%。电
2、化学测试如循环伏安(CV)、电化学阻抗谱(EIS)、计时电流(CA)、计时电位曲线(CP)等的测试结果表明，与传统的碳材料载体和Pt催化剂相比，Pd/BCF对碱性介质中乙醇电催化氧化的活性显著提高，且在反应中的抗中毒能力较强。关键词复合材料，燃料电池，乙醇，电催化，细菌纤维素，钯中图分类号TM9114文章编号1005-3093(2018)02-0155-06Electro-catalyticActivityofCompositeFilmsofPd-dopedBacterialCelluloseNano-fibersforEthanolOxidationAOKelong,LIDawe
3、i,YAOYixin,LVPengfei,WEIQufu(KeyLaboratoryofEco-textiles,MinistryofEducation,JiangnanUniversity,Wuxi214122,China)Correspondent:WEIQufu,Tel:13771106262,E-mail:qfwei@jiangnan.edu.cnSupportedbyNaturalScienceFoundationofJiangsuProvince(No.BK20150155),SixTalentPeaksProjectinJi-angsuProvince(No.2014
4、-XCL001),FundamentalResearchFundsfortheCentralUniversities(Nos.JUSRP51505,JUSRP115A04＆JUSRP51621A),andthePriorityAcademicProgramDevelopmentofJiangsuHigherEducationInstitutions(PAPD)Manuscriptreceived2016-12-30;inrevisedform2017-05-26ABSTRACTBacterialcellulosenanofibers(BCFs)weresynthesizedbyfe
5、rmentationprocessandthenwiththepreparedBCFsascarriermaterial,compositefilmsofPd-dopedbacterialcellulosenanofibers(Pd/BCF)werepreparedbydepositingnano-particlesofPd(Pd-NPs)onthecarrierviachemicalreduc-tionprocess.ThepreparedPd-dopedBCFsandcompositefilmsPd/BCFwerecharacterizedbyX-raydif-fraction
6、(XRD),scanningelectronmicroscope(SEM),transmissionelectronmicroscopy(TEM),cyclicvoltammetry(CV),electrochemicalimpedancespectra(EIS),chronoamperometry(CA),andchronopoten-tiometry(CP).TheresultsshowthatPd-NPswerewelldispersedonBCFsandespeciallyinthemesopo-rousofBCFs.Thecompositefilmscontainc.a.
7、19%(massfraction)ofPd-NPswithameanparticlesizec.a.10nm.ThecompositeofPd/BCFhadbettercatalyticactivityincontrasttothetraditionalcarboncarri-ermaterialandPt-catalyst.Besides,thecompositeofPd/BCFexhibitedrelativelyhighpoisontoleranceduring
